Eaton Dpct Manual

DPCT IOM Instruction Operation Manual

Installation manual

ii DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN Jaunary 2023 www.eaton.com

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY

The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s

(“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales

office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in

appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.

THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES

OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY

EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE

CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.

In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or

other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to

damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the

use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the

information, recommendations and descriptions contained herein. The information contained in this manual is subject to

change without notice.

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Index

1. Index

1. Introduction .......................................................................................................................................................1

1.1 Safety ............................................................................................................................................................................... 1

1.2 Warranty........................................................................................................................................................................... 1

1.3 Safety precautions............................................................................................................................................................ 1

1.4 Product overview ............................................................................................................................................................. 1

2. Installation and electrical connections ...........................................................................................................2

2.1 Mounting.......................................................................................................................................................................... 2

2.2 Pressure sensor connections........................................................................................................................................... 2

2.3 Electrical connections ...................................................................................................................................................... 2

2.3.1 Field Conductor Sizes ............................................................................................................................................ 2

2.3.2 Electrical Checkout Instructions............................................................................................................................. 3

2.4 System pressure connection............................................................................................................................................ 3

3. Hardware description........................................................................................................................................4

3.1 General............................................................................................................................................................................. 4

3.1.1 Battery chargers..................................................................................................................................................... 4

3.1.2 Three-step charge .................................................................................................................................................. 4

3.1.2.1 Bulk ...........................................................................................................................................................4

3.2.1.2 Overcharge ................................................................................................................................................4

3.2.1.3 Float ..........................................................................................................................................................4

3.1.3 Charger shut down ................................................................................................................................................ 4

3.1.4 AC input fuse protection........................................................................................................................................ 4

3.1.5 Battery charger display........................................................................................................................................... 4

3.1.6 Battery charger setup: lead acid / NiCad................................................................................................................ 4

3.1.6.1 Lead acid ...................................................................................................................................................4

3.1.6.2 NiCad.........................................................................................................................................................5

3.1.7 Forced charging...................................................................................................................................................... 5

3.1.8 Battery charger specifications................................................................................................................................ 5

3.2 User interface touch screen............................................................................................................................................. 5

3.2.1 Memory ................................................................................................................................................................. 5

3.2.2 Battery backup ....................................................................................................................................................... 5

3.2.3 Color touchscreen specifications ........................................................................................................................... 5

3.2.4 USB port ................................................................................................................................................................ 5

3.3 Power I/O board ............................................................................................................................................................... 6

3.4 External pushbuttons ...................................................................................................................................................... 6

4. Operation ...........................................................................................................................................................7

4.1 General............................................................................................................................................................................. 7

4.2 Welcome screen .............................................................................................................................................................. 7

4.2.1 Welcome screen and home screen graphics ....................................................................................................... 7

4.2.1.1. Welcome screen ........................................................................................................................................7

4.2.1.2. Home tab .................................................................................................................................................8

4.3 Start sequence ................................................................................................................................................................. 8

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Index

4.3.1 Manual start sequence .......................................................................................................................................... 8

4.3.2 Automatic start sequence...................................................................................................................................... 9

4.3.2.1 OFF mode.................................................................................................................................................9

4.3.2.2 MANUAL mode ........................................................................................................................................9

4.3.2.3 AUTO mode ..............................................................................................................................................9

4.3.2.4 STOP modes.............................................................................................................................................9

4.3.2.4.1 Manual stop mode.................................................................................................................................9

4.3.2.4.2 Automatic shutdown..............................................................................................................................9

4.3.2.4.3 Weekly test timer ..................................................................................................................................9

4.3.2.4.4 Test engine pushbutton..........................................................................................................................9

4.3.3 Minimum run time (MRT) ...................................................................................................................................... 9

4.3.4 Sequential start timer (SST)................................................................................................................................. 10

4.3.5 Control Inputs ...................................................................................................................................................... 10

4.3.5.1 Control input descriptions.......................................................................................................................10

4.3.5.1.1 Remote manual start ...........................................................................................................................10

4.3.5.1.2 Remote manual stop............................................................................................................................10

4.3.5.1.3 Remote manual start/stop ...................................................................................................................10

4.3.5.1.4 Remote auto start ................................................................................................................................10

4.3.5.1.5 Deluge valve start ................................................................................................................................10

4.3.5.1.6 Low suction..........................................................................................................................................10

4.3.5.1.7 Low foam level..................................................................................................................................... 11

4.3.5.1.8 Proof pressure switch .......................................................................................................................... 11

4.3.5.1.9 Low room temperature ........................................................................................................................ 11

4.3.5.1.10 High room temperature...................................................................................................................... 11

4.3.5.1.11 Interlock .............................................................................................................................................. 11

4.3.5.1.12 Low reservoir ..................................................................................................................................... 11

4.3.5.1.13 High reservoir..................................................................................................................................... 11

4.3.5.1.14 Reservoir empty................................................................................................................................. 11

4.3.5.1.15 Low fuel ............................................................................................................................................. 11

4.3.5.1.16 High fuel............................................................................................................................................. 11

4.3.5.1.17 Fuel spill.............................................................................................................................................. 11

4.3.5.1.18 Dump valve ........................................................................................................................................ 11

4.3.5.2.19 Enable sequential start ...................................................................................................................... 11

4.3.5.1.20 Relief valve discharge......................................................................................................................... 11

4.3.5.1.21 Custom input...................................................................................................................................... 11

4.3.5.1.22 Undefined...........................................................................................................................................12

4.3.5.3 Loss of DC power...................................................................................................................................12

4.3.5.4 Speed switch malfunction ......................................................................................................................12

4.3.5.5 Engine starter coil failure........................................................................................................................12

4.3.5.6 Audible alarm silencing...........................................................................................................................12

4.4 Output relays.................................................................................................................................................................. 12

4.4.1 Engine run (1CR).................................................................................................................................................. 12

4.4.2 Low fuel (2CR) ..................................................................................................................................................... 12

4.4.3 Auto mode (3CR) ................................................................................................................................................. 12

4.4.4 Common alarm (4CR) .......................................................................................................................................... 12

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Index

4.5 Engine Alarm Functions ................................................................................................................................................. 12

4.5.1 Engine overspeed ................................................................................................................................................ 12

4.5.2 Fail to start ........................................................................................................................................................... 12

4.5.3 High engine temperature..................................................................................................................................... 12

4.5.4 Low oil pressure .................................................................................................................................................. 12

5. Programming ...................................................................................................................................................13

5.1 Introduction .................................................................................................................................................................... 13

5.2 Navigation ................................................................................................................................................................... 13

5.3 Startup tab...................................................................................................................................................................... 14

5.3.1 Quick setup.......................................................................................................................................................... 14

5.3.2 Manual/automatic start ........................................................................................................................................ 14

5.3.3 Test alarm ............................................................................................................................................................ 14

5.3.4 USB download ..................................................................................................................................................... 14

5.4 Panel setup tab .............................................................................................................................................................. 15

5.4.1 Language ............................................................................................................................................................. 15

5.4.2 Set time ............................................................................................................................................................... 15

5.4.3 Set date ............................................................................................................................................................... 15

5.4.4 Set day of the week............................................................................................................................................. 15

5.4.5 Auto shutdown .................................................................................................................................................... 15

5.4.6 Source voltage ..................................................................................................................................................... 15

5.4.7 Battery voltage..................................................................................................................................................... 15

5.4.8 Battery type ......................................................................................................................................................... 15

5.4.9 Common alarm settings....................................................................................................................................... 15

5.4.10 Notification area settings ..................................................................................................................................... 15

5.4.11 Foam controller .................................................................................................................................................... 15

5.4.12 Menu password................................................................................................................................................... 15

5.4.13 Controller serial number ...................................................................................................................................... 15

5.4.14 Pump serial number............................................................................................................................................. 15

5.4.15 Save configuration to USB................................................................................................................................... 15

5.4.16 Load configuration to usb .................................................................................................................................... 15

5.4.17 Save settings as factory default .......................................................................................................................... 15

5.4.18 Restore factory default settings........................................................................................................................... 15

5.4.19 Screen brightness................................................................................................................................................ 16

5.4.20 Welcome screen.................................................................................................................................................. 16

5.4.21 Screen lock .......................................................................................................................................................... 16

5.4.22 Customer service contact.................................................................................................................................... 16

5.4.22.1 Save configuration ................................................................................................................................16

5.4.22.2 Load configuration ................................................................................................................................16

5.4.23 Update firmware.................................................................................................................................................. 16

5.4.24 Update languages ................................................................................................................................................ 16

5.5 Help tab.......................................................................................................................................................................... 16

5.5.1 Product manual.................................................................................................................................................... 16

5.5.2 Service contact information................................................................................................................................. 16

5.5.3 Factory contact information................................................................................................................................. 16

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Index

5.6 Pressure settings tab ..................................................................................................................................................... 16

5.6.1 Start pressure ...................................................................................................................................................... 16

5.6.2 Stop pressure ...................................................................................................................................................... 16

5.6.3 Stop mode ........................................................................................................................................................... 16

5.6.4 Start above pressure............................................................................................................................................ 16

5.6.5 Pressure variance recording................................................................................................................................. 16

5.6.6 Hourly pressure recording ................................................................................................................................... 17

5.6.7 Low suction shutdown ........................................................................................................................................ 17

5.6.8 Low foam shutdown............................................................................................................................................ 17

5.6.9 Proof pressure switch.......................................................................................................................................... 17

5.6.10 Pressure units...................................................................................................................................................... 17

5.6.11 Pressure transducer............................................................................................................................................. 17

5.6.12 Calibrate transducer............................................................................................................................................. 17

5.7 Timer values tab............................................................................................................................................................. 17

5.7.1 Minimum run time (MRT) .................................................................................................................................... 17

5.7.2 Sequential start time............................................................................................................................................ 17

5.7.3 AC power failure alarm ........................................................................................................................................ 18

5.7.4 AC power failure start .......................................................................................................................................... 18

5.7.5 Weekly engine test timer .................................................................................................................................... 18

5.8 Alarm setpoints tab ........................................................................................................................................................ 18

5.8.1 Source voltage alarm setpoint ............................................................................................................................. 18

5.8.2 Battery voltage alarm setpoint............................................................................................................................. 18

5.8.3 Transducer fail pump start ................................................................................................................................... 18

5.8.4 Abort engine test ................................................................................................................................................. 18

5.9 Inputs/outputs tab .......................................................................................................................................................... 18

5.9.1 Inputs................................................................................................................................................................... 18

5.9.2 Outputs................................................................................................................................................................ 18

5.10 History stats diag. Tab (history/statistics/diagnostics) .................................................................................................. 19

5.10.1 Message History.................................................................................................................................................. 19

5.10.2 Controller Statistics.............................................................................................................................................. 19

5.10.3 Controller diagnostics .......................................................................................................................................... 20

5.10.4 Start up information............................................................................................................................................. 20

5.10.5 Save to USB......................................................................................................................................................... 20

6. Optional add-on boards..................................................................................................................................21

6.1 Relay output board ......................................................................................................................................................... 21

6.1.1 Programming ...................................................................................................................................................... 21

6.2 Secondary 4-20 mA device ............................................................................................................................................ 21

6.2.1 Programming: ...................................................................................................................................................... 21

6.3 Modbus board ............................................................................................................................................................... 21

6.3.1 Programming: ...................................................................................................................................................... 21

6.3.2 Modbus dip switch settings ................................................................................................................................ 21

viiDPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

Index

Appendix A: Menu structure.................................................................................................................................22

Appendix B: Startup tab menu structure............................................................................................................23

Appendix C (a): Panel setup tab menu structure ...............................................................................................24

Appendix C (b): Panel setup tab menu structure continued.............................................................................25

Appendix C (c): Panel setup tab menu structure continued .............................................................................26

Appendix C (d): Panel setup tab menu structure continued ............................................................................27

Appendix D: Help tab menu structure.................................................................................................................28

Appendix E (a): Pressure settings tab menu structure .....................................................................................29

Appendix E (b): Pressure settings tab menu structure continued ..................................................................30

Appendix E (c): Pressure settings tab menu structure continued....................................................................31

Appendix F: Timer values tab menu structure ...................................................................................................32

Appendix G: Alarm settings tab menu structure................................................................................................33

Appendix H (a): Inputs/outputs settings tab menu structure ..........................................................................34

Appendix H (b): Inputs/outputs settings tab menu structure continued........................................................35

Appendix I: History stats diag. Tab menu structure ..........................................................................................36

Appendix J: Relay option board– tab menu structure.......................................................................................37

Appendix K (a): 4-20 mA device – tab menu structure......................................................................................38

Appendix K (b): 4-20 mA device – tab menu structure continued ..................................................................39

Appendix L: Modbus board – tab menu structure .............................................................................................40

Appendix M: Alarm/status messages ................................................................................................................41

Appendix N: I/O board error codes ....................................................................................................................43

Appendix O: Assembly information.....................................................................................................................44

Appendix P: End user license agreement (EULA) .............................................................................................45

1. Information about us...................................................................................................................................................... 45

2. Definitions ...................................................................................................................................................................... 45

3. Grant and scope of license ............................................................................................................................................ 46

4. Location data.................................................................................................................................................................. 47

5. Necessary equipment .................................................................................................................................................... 47

6. Updates.......................................................................................................................................................................... 47

7. Transfer and assignment restrictions ............................................................................................................................ 47

8. Restricted uses ............................................................................................................................................................. 47

9. Third party software ...................................................................................................................................................... 49

10. Open-source software ................................................................................................................................................... 49

viii DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

Index

11. Fees................................................................................................................................................................................ 49

12. Support services ............................................................................................................................................................ 49

13. Disclaimer of warranty ................................................................................................................................................... 49

14. Limitation of liability ...................................................................................................................................................... 49

15. Indemnification .............................................................................................................................................................. 50

16. Amendments to this agreement ................................................................................................................................... 50

17. For authorized parties in california ................................................................................................................................. 50

18. Enforcement rights ....................................................................................................................................................... 50

19. Data protection ............................................................................................................................................................. 51

20. Confidential information ................................................................................................................................................ 51

21. Intellectual property ownership...................................................................................................................................... 51

22. Termination or suspension ............................................................................................................................................ 52

23. Links .............................................................................................................................................................................. 52

24. Representations, warranties, covenants and disclaimers ............................................................................................. 52

25. Force majeure ................................................................................................................................................................ 53

26. Miscellaneous .............................................................................................................................................................. 53

27. Regulatory matters......................................................................................................................................................... 53

28. Governing law and jurisdiction ....................................................................................................................................... 54

29. Cybersecurity ................................................................................................................................................................. 54

30. Agreement ..................................................................................................................................................................... 54

Introduction

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

1. Introduction

1.1 Safety

This technical document is intended to cover most aspects

associated with the installation, application, operation,

and maintenance of the DPCT Fire Pump Controller. It is

provided as a guide for authorized and qualified personnel

only in the selection and application of the DPCT Controller.

If further information is required by the purchaser regarding

particular installation, application, or maintenance activity,

please contact an authorized EATON sales agent or the

installing contractor.

1.2 Warranty

No warranties, expressed or implied, including warranties

of fitness for a particular purpose of merchantability, or

warranties arising from course of dealing or usage of trade,

are made regarding the information, recommendations

and descriptions contained herein. In no event will EATON

be responsible to the purchaser or user in contract, in tort

(including negligence), strict liability or otherwise for any

special, indirect, incidental or consequential damage or loss

whatsoever, including but not limited to damage or loss of

use of equipment, plant or power system, cost of capital,

loss of power, additional expenses in the use of existing

power facilities, or claims against the purchaser of user by

its customers resulting from the use of the information and

descriptions contained herein.

1.3 Safety precautions

All safety codes, safety standards, and/or regulations must

be strictly observed in the installation, operation, and

maintenance of this device.

CAUTION

COMPLETELY READ AND UNDERSTAND THE MATERIAL

PRESENTED IN THIS DOCUMENT BEFORE ATTEMPTING

INSTALLATION, OPERATION, OR APPLICATION OF THE

EQUIPMENT. IN ADDITION, ONLY QUALIFIED PERSONS

SHOULD BE PERMITTED TO PERFORM ANY WORK

ASSOCIATED WITH THIS EQUIPMENT. ANY WIRING

INSTRUCTIONS PRESENTED IN THIS DOCUMENT MUST

BE FOLLOWED PRECISELY. FAILURE TO DO SO COULD

CAUSE PERMANENT EQUIPMENT DAMAGE.

1.4 Product overview

The DPCT Controller is a comprehensive, multi-function

microprocessor-based Diesel Fire Pump Controller.

Designed to meet the needs of markets worldwide, the

DPCT controller meets the requirement of and is certified

by the following authorities: Underwrites Laboratories (UL),

Underwriters Laboratories of Canada (ULC), Complies with

UL 218, Factory Mutual 1321/1323 (FM), ANSI/NFPA 20,

National Electrical Code (NEC), and meets the requirements

for U.S.B. / C.B.C Seismic approvals.

Refer to Appendix O for additional assembly information.

Installation and electrical connections

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2. Installation and electrical connections

2.1 Mounting

Carefully unpack the controller and inspect it thoroughly.

The controller should be located as close as is practical

to the engine it controls and shall be within sight of the

engine, preferably ten feet or less.

The DPCT controller is designed for wall mounting and

it is recommended to use ½” Grade 5 hardware. For

dimensional and weight data please refer to the respective

data sheet for the Diesel Fire Pump Controller.

The Occupational Health and Safety Administration (OSHA)

recommends that the weight limit for individual lifting be 50

pounds (22.7kg). The final assembled weight of the DPCT

controller depending on selected options could exceed this

value. Therefore, Eaton recommends a two-person lift when

lifting or transferring the controller assembly.

If the assembly is mounted outdoors, it should not be

mounted in direct sunlight. Direct sunlight exposure will risk

damaging the user interface touchscreen.

2.2 Pressure sensor connections

The DPCT is equipped with a pressure sensor to monitor

the fire suppression system water pressure. The controller

is provided with a ½” NPT female system pressure

connection. It is located external to the enclosure on

the right-hand side. The connection should be installed

as per the direction given in the latest revision of NFPA

20, Standard for the Installation of Stationary Pumps for

Fire Protection.

NOTE

Water supply lines to the pressure sensor or pressure

switch must be free of dirt and contamination.

The measured system pressure is displayed on the

user interface touch screen. Specific START and STOP

pressure set points are programmable through the

user interface touchscreen. Refer to Section 5 for

programming instructions.

The maximum operating pressure of the pressure sensor

and internal plumbing components is listed on the

controller nameplate.

2.3 Electrical connections

NOTICE

ALL CONDUIT CONNECTIONS TO THE CONTROLLER

ARE RECOMMENDED TO ENTER THROUGH THE

BOTTOM OR LOWER RIGHT SIDE OF THE ENCLOSURE.

THE ENCLOSURE IS SUPPLIED WITH LABELLING THAT

DIRECTS THE INSTALLER TO THE ENTRY/EXIT LOCATIONS

REQUIRED TO MAINTAIN WARRANTY. REFER TO THE

ASSOICATED DIMENSIONAL DRAWING FOR REFERENCE.

DRILLING HOLES OR INSTALLING CONDUIT ABOVE

THE LEVEL OF THE MICROPROCESSOR BOARD MAY

VOID WARRANTY.

All electrical connections should meet all relevant national

and local electrical codes and standards and follow the wire

sizing guidance supplied inside the controller enclosure.

The controller shall be located or protected in such a

manner so that it will not be damaged by water escaping

from pumps or pump connections.

Current carrying parts of controllers shall be a minimum of

12 inches (305mm) above the floor.

Prior to starting, verify all data on the nameplate such as:

catalog number, AC line voltage and DC battery voltage.

Inspect all electrical connections, components, and wiring

for any visible damage and correct as necessary. Ensure

that all electrical connections are properly tightened before

energizing the controller.

Refer to the appropriate field connection drawing affixed

to the enclosure door, for all wiring information pertaining

to the incoming AC power supply, batteries, and diesel

engine wiring.

Install required conduit using industry standard methods

and tools.

The incoming 120-240V 50-60Hz AC line voltage connection

is clearly marked L (Line), N (Neutral) and G (Ground), and is

located on the DPCT I/O (Input/Output) Board (port P11).

Terminals 1 through 12, 301 through 304, and 310 through

312 (ports P13, P14, P15, P16, P17 and P18) located on the

DPCT I/O board are for connections to the corresponding

terminals in the diesel engine controller.

Terminals 39 through 49 (port P1) located on the DPCT I/O

board are for connecting a variety of external I/O devices to

the DPCT. These I/O are designed to be used with dry type

contacts (voltage free).

CAUTION

DO NOT APPLY AC VOLTAGE TO TERMINALS 39

THROUGH 49.

Terminals 50 through 73 (ports P2, P3, P4, and P5) located on

the DPCT I/O board are for connection of all the output relay

functions. Terminals 50 through 55 (port P2) can carry 240VAC

maximum at 10 Amperes. Terminals 56 through 73 (ports P3,

P4 and P5) can carry 240VAC maximum at 8 Amperes.

NOTE

All field connections and AC wiring must enter the

enclosure through the lower right sidewall or right side of

the bottom end wall ONLY OTHERWISE WARRANTY IS

VOID. (Refer to the labels affixed inside of the enclosure)

2.3.1 Field Conductor Sizes

Refer to the recommended wire size table supplied inside

of the controller enclosure.

Installation and electrical connections

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Refer to Table 1 below for the recommended torque values

for the respective screw terminal blocks in the controller.

Table 1. Terminal Block Torque Values

Terminal Block

Designation

Torque

N·m In-lbs

P13, P15, P17 0.5 4.4

P14, P16 1.2 10.6

2.3.2 Electrical Checkout Instructions

Adjust the pressure set points detailed in Appendix E.

With the controller isolated and the ‘Start Pressure’

and ‘Stop Pressure’ values programmed, energize the

controller. If the system water pressure is lower than

the start pressure, the controller will start the pump.

If the controller is set up for fully automatic operation,

the controller will stop the pump when the pressure is

above the stop point and the minimum run timer (MRT)

has completed its timed interval. The system pressure

must be equal to or greater than the programmed stop

pressure value, otherwise the pump will stop only when

the pushbutton is pushed or if the MANUAL/OFF/AUTO

switch is placed in the OFF position. If the controller is

not setup for automatic shutdown operation (programmed

for manual stop mode), the stop pushbutton must be

operated to stop the pump, or the MANUAL/OFF/AUTO

switch is placed in the OFF position.

If required, the minimum run time (MRT) must be set for

a minimum of thirty (30) minutes. Refer to Appendix F for

programming of the MRT.

If the sequential start timer (SST) is required refer to

Appendix F. If not required set the SST to disabled. If

required, the lead pump SST should be set to disabled and

the lag SST to five (5) to ten (10) seconds. If there are more

than two pumps in the system, allow a ten (10) second

delay between pumps.

If the Undervoltage/Overvoltage alarms are present, check

the programmed values by referring to Appendix H. If the

values are programmed to their maximum and the alarms

continue to occur, check the main voltage supply to ensure

that the power available is dependable as per NFPA,

Pamphlet 20 standards.

2.4 System pressure connection

The DPCT is supplied with a Pressure Sensor, or as an

option, a Pressure Switch.

The “TEST” drain connection, located to the left of the

system pressure connection, should be piped to a drain or

to waste.

NOTE

Water supply lines to the drain valve and pressure sensor or

pressure switch must be free from dirt and contamination.

The controller interfaces with either a pressure sensor

or inputs from a remote device. The controller will come

pre-programmed for the correct model and the correct

pressure device.

On controllers that use the pressure sensor option the

sensor will be used to measure the system pressure. The

measured current system pressure value will be displayed

on the touch screen user interface at the “Home” screen

to the right-center of the display. Precise START and STOP

pressure set points can be programmed into the controller

via the touch screen user interface (Refer to section 5.6).

Pressure readings are also captured and recorded in the

memory of the controller during alarm conditions and

pressure deviations.

On foam additive controllers that use a remote device input

the touch screen user interface will display “OK” if the

pressure is within the setting of the remote device setting.

If the pressure falls below the remote device’s setting the

switch’s contacts will change state and the touch screen

user interface will display a “LOW” warning. The message

history will record “Low Pressure” when the pressure drops

below the set point.

Hardware description

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3. Hardware description

3.1 General

The purpose of this section is to familiarize the reader with

the DPCT controller hardware, its nomenclature, and to list

the unit’s specifications.

3.1.1 Battery chargers

Battery chargers are independent of each other and produce

a maximum of 10 amps each at full rate. Each battery

charger is fully electronic and will protect itself by shutting

down during a short circuit condition.

The maximum current draw that the chargers will draw

when operating at 100% charging rate is:

12 Volt System 24 Volt System

1.6 amps - 120V 3.2 amps - 120V

0.8 amps - 240V 1.6 amps - 240V

3.1.2 Three-step charge

The battery chargers incorporate a three-step charge

to guarantee the fastest charge times while optimizing

battery life.

The three steps are referred to as Bulk mode, Overcharge

mode and Float mode.

3.1.2.1 Bulk

In Bulk mode, a current of 10 Amps is delivered into the

battery until the voltage reaches 2.4 Volts per cell for Lead

Acid Batteries. (14.4 Volts for a 12 Volt battery). At this

point, the battery has recovered approximately 90% of

its capacity.

When the charger senses this state, it switches to the

Overcharge mode.

The bulk mode charging may take up to 24 hours depending

on the battery capacity and the level to which it was

discharged. The charge mode is recorded in the Diesel Plus

message history.

3.2.1.2 Overcharge

In the Overcharge mode, the voltage on the battery is

held at 14.4 Volts and the current into the battery declines.

This mode is maintained until the current into the battery

declines to 1.5 Amps. At this moment, the battery is

approximately 99% charged and the charger will change to

Float Mode.

The overcharge mode charging may take up to 12 hours

depending on the battery capacity and the level to which it

was discharged. The charge mode is recorded in the Diesel

Plus message history.

3.2.1.3 Float

In Float Mode, the charger maintains the battery voltage

at 2.23 Volts per cell for a lead acid battery (13.4 Volts for

a 12 Volt battery). Once Bulk and Overcharge modes are

completed, the charger will maintain the battery charge in

Float mode by regulating to 13.3V. If the charger cannot

maintain the battery capacity while in Float mode, the

charger will begin a new charging sequence by entering

Bulk mode.

3.1.3 Charger shut down

The charger will automatically shut down if there is no load

connected to the output or if there is a short on the load

side of the charger. In addition, the charger will not operate

if a battery is connected incorrectly or if the wrong voltage

of battery is connected.

3.1.4 AC input fuse protection

The AC Supply is protected by a 6 Amp fuse which will

blow in case of a breakdown of the charger. This fuse will

not blow because of overloading of the charger since the

electronics will shut down the charger in this event before

the fuse blows. If this fuse is blown the charger must

be replaced.

3.1.5 Battery charger display

The DPCT charger’s history will display Charging Voltage and

Amperage as well as error messages. The following will be

recorded according to the conditions that exist.

“NO BATTERY” is displayed if no battery is attached to

the charger.

“BATTERY ERROR” is displayed if a battery is connected to

the charger, but the voltage is not within the minimum and

maximum thresholds for the selected battery type.

“ERROR, RECOVERING” is displayed if the maximum

battery charger output voltage (31.4V) has been exceeded.

3.1.6 Battery charger setup: lead acid / NiCad

DIP switches on the charger can be used to select

several setup options including battery type, battery

voltage and Forced Charging. Options currently supported

for the charger include: 12 or 24 Volt and Lead Acid or

NiCad Batteries.

3.1.6.1 Lead acid

To select 12 Volt battery charging with Lead Acid batteries

set all DIP switches to the OFF position.

Hardware description

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

To select 24 Volt battery charging with Lead Acid batteries,

set DIP switch 3 to the ON position and all other DIP

switches to the OFF position.

3.1.6.2 NiCad

To select 12 Volt battery charging with NiCad batteries, set

DIP switch 6 to the ON position and all other DIP switches

to the OFF position.

To select 24 Volt battery charging with NiCad batteries, set

DIP switches 3 and 6 to the ON position and all other DIP

switches to the OFF position.

3.1.7 Forced charging

There is provision for the battery chargers to provide

a forced charge to the batteries. The Forced Charge

function will only activate immediately after applying

power to the charger with DIP Switch 8 in the ON

position and a battery connected.

When the charger is in the forced charge mode, it will

attempt to recover a battery by delivering 10 amps. If the

battery does not reach the minimum battery voltage (8 Volts

for a 12 Volt system; 16 Volts for a 24 Volt system) within

5 minutes, the recovery attempt will terminate. Once the

battery reaches its minimum battery voltage, the normal

charge sequence will commence.

Forced charging will only occur once per battery charger

power cycle.

3.1.8 Battery charger specifications

Voltage Input:100 - 240VAC - Auto detect

Voltage Output: 12-24VDC-DIP switch selectable

Supply Frequency: 50 or 60Hz

3.2 User interface touch screen

The user interface touch screen is accessible from the front

door of the DPCT fire pump controller. The touch screen

provides access to:

• Alert the user to specific conditions

• Program the controller

• Set and monitor the operating parameters

• Perform a manual start of the engine

3.2.1 Memory

The EPCT has non-volatile memory which allows the

recording and storage of up to 65,000 events.

3.2.2 Battery backup

A ten (10) year, replaceable lithium battery allows a clock to

be kept during power failures. Removal of the battery does

not affect programming.

3.2.3 Color touchscreen specifications

Aspect Ratio: 5:3

Resolution: 800x480 WQVGA

Type: LCD display

Viewing Area: 7 inches diagonal

Rating: Type 4/4X

3.2.4 USB port

The USB port located on the door is meant for downloading

the controller message history, statistics, diagnostics, start

up, and configuration files. The controller firmware can

be uploaded, and the controller configuration can be both

Hardware description

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

uploaded and downloaded. Compatible USB flash drive

formats include FAT16 & FAT32.

3.3 Power I/O board

The Power I/O board is used for all connections pertaining

to the operation of the controller. From the remote inputs,

starting conditions, and the alarm relay outputs.

Refer to the schematic diagram mounted on the inside

of the controller door for all connection points specific to

the controller.

3.4 External pushbuttons

• (Crank #1) - The Crank #1 pushbutton is marked with

the ISO symbol for engine cranking including the number

1. This pushbutton is used to energize the crank #1 relay

on the I/O board to provide battery voltage to the related

solenoid on the engine.

• (Crank #2) – The Crank #2 pushbutton is marked with

the ISO symbol for engine cranking including the number

2. This pushbutton is used to energize the Crank #2 relay

on the I/O board to provide battery voltage to the related

solenoid on the engine.

• (Stop) - The STOP pushbutton will initiate the stopping

sequence of the fire pump engine. Releasing the STOP

button will put the controller back into the AUTOMATIC

mode. If a starting condition exists, the pump motor will

start again once the STOP button is released.

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

4. Operation

4.1 General

This section specifically describes the operation and

functional use of the DPCT controller. The practical use

of and operation within each category will be discussed.

In this section, it is assumed that prior sections of this

manual were reviewed, and that the operator has a basic

understanding of the hardware.

4.2 Welcome screen

When the DPCT controller is first energized, the Welcome

Screen will be displayed (refer to section 4.2.1.1.)

While on the WELCOME SCREEN, the controller will

not start the pump regardless of any present starting

conditions; this screen will show all present starting

conditions. The screen comes equipped with a five (5)

minute countdown timer. When the timer expires the

controller will exit the WELCOME SCREEN and move to the

HOME tab screen and resume normal operation.

The three (3) buttons that appear on this screen are:

• CLOSE AND DISABLE WELCOME SCREEN

• CLOSE WELCOME SCREEN AND RUN ON

NEXT STARTUP

• QUICK SETUP.

The operation is as follows:

Close and Disable Welcome Screen –when selected this

will take the user to the HOME tab screen. The next time

that the controller is re-energized the controller will not

show the WELCOME SCREEN.

Close Welcome Screen and Run On Next Startup – when

selected this will take the user to the HOME tab screen.

The next time that the controller is re-energized the

controller will return to the WELCOME SCREEN.

Quick Setup – when selected this will take the user directly

to the Quick Setup menu screen. On this screen the user

can program the Time, Date, Start Pressure, Stop Pressure,

Enable or Disable Automatic Shutdown, and Minimum

Run Timer. If the user chooses to accept or disregard the

programming from this menu, the user will be returned back

to the WELCOME SCREEN.

4.2.1 Welcome screen and home screen graphics

4.2.1.1. Welcome screen

Fig 1. DPCT Welcome Screen

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

4.2.1.2. Home tab

Fig 2. DPCT HOME Screen

In the top portion of the HOME tab the screen will display

the following:

• The incoming source voltage value

• The mode that the controller is set to (MANUAL/

OFF/AUTO)

• Each battery charger’s charging current value

• Each battery’s measured voltage level value

• The state of the Crank 1 and Crank 2 contacts

• The run state of the engine starter

• The run state of the diesel engine

• The fuel level of the diesel engine fuel tank

• The Low Fuel alarm icon if one exists

• The START and STOP pressure set points

• The current measured system pressure

• The Low Oil Pressure alarm icon for the diesel engine if

one exists

• The High Engine Temperature alarm icon for the diesel

engine if one exists

The bottom of the HOME tab screen is the Notification Area

which displays all statuses, alarms, and timer indications

with visuals to show which signals are sounding the audible

alarm. Buttons are also provided to reset or silence all alarm

conditions. Also displayed in this area is the date and time.

When the controller receives a call-to-start signal it will attempt

to crank and start the engine. During this time a visual indication

will be provided showing either the “C1” or “C2” crank contact

in a closed state. When the crank signal is initiated the contact,

conductor and starter graphics will change color to green

indicating they are active. Once the engine is running the piston

graphics will change color to green as well and will animate.

The drive connection to the pump will change color to green

to indicate it is active and the pump graphic will animate and

become encircled by a green border to indicate it is running.

There will be an Engine Running status in the Notification Area

4.3 Start sequence

In the Automatic Mode the DPCT controller will

automatically start and stop the fire pump engine as

dictated by the features supplied and their programmed

set-point values. A summary of the controller intelligence

and supervisory circuits that constantly monitor the

condition of the system pressure, inputs, and system alarm

points is provided.

4.3.1 Manual start sequence

Manual start is defined as a local start, remote manual

start, or remote manual start/stop. Whenever the engine is

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

running via a manual start, the engine needs to be manually

stopped via the stop pushbutton located on the enclosure

flange or by placing the controller in the OFF mode.

4.3.2 Automatic start sequence

Automatic start is defined as a low-pressure start condition,

deluge valve start condition or a remote auto start.

Whenever the engine is running via an automatic start, the

engine can automatically stop once all starting conditions

have returned to normal and the minimum run timer (MRT)

has finished its timing cycle. If automatic shutdown is

disabled, the engine needs to be manually stopped via the

local STOP pushbutton located on the enclosure flange or by

placing the controller in the OFF mode.

4.3.2.1 OFF mode

When the MANUAL/OFF/AUTO (MOA) selector switch is

placed in the OFF position the controller will not attempt to

start the engine for any reason. Off mode also resets and

silences all alarms.

4.3.2.2 MANUAL mode

When the MANUAL/OFF/AUTO (MOA) selector switch is

placed in the MANUAL position this allows the starting of

the engine using the manual crank buttons (Crank #1)

and (Crank #2)

These are located on the enclosure flange. For

added cranking capacity, both buttons can be

depressed simultaneously.

The engine can be stopped by the “Local Stop” pushbutton

or by placing the controller in the OFF mode. The engine will

automatically stop in the case of an OVERSPEED condition.

All alarms, except for “FAIL TO START”, are active in the

MANUAL mode.

CAUTION

Only depress Crank #1 or Crank #2 pushbuttons with

controller in the MANUAL mode.

Do not depress the crank pushbuttons in any other mode or

while the engine is running. Doing so can result in serious

damage to the engine.

4.3.2.3 AUTO mode

A drop in system pressure, a valid remote input starting

condition, or a Weekly Test Timer will initiate the “attempt

to start” cycle. This cycle consists of 6 crank periods of

15 seconds duration separated by 5 rest periods of 15

seconds duration. Battery 1 and Battery 2 are alternated for

each crank cycle. If one battery is inoperative or missing,

the controller will lock-in on the remaining battery during

the cranking sequence. Once the engine is running, the

controller will stop all further cranking.

4.3.2.4 STOP modes

The Stop Mode is programmable for Automatic Shutdown

- On or Off (see Appendix C). Note that the engine can be

stopped in many cases by pressing the local STOP push

button or at any time by placing the controller in the OFF

position. It may also be stopped automatically in the event

of an OVERSPEED condition.

4.3.2.4.1 Manual stop mode

The engine will continue to run until the “Local Stop”

pushbutton is depressed - providing all starting causes have

been eliminated.

4.3.2.4.2 Automatic shutdown

The engine will continue to run until the MRT has timed out

and all starting causes have been eliminated.

4.3.2.4.3 Weekly test timer

Each DPCT controller is equipped with a Weekly Test Timer, to

automatically exercise the engine in one-week intervals, based

on the programmed setting. The controller initiates the starting

sequence by opening a drain valve resulting in a simulated

system pressure loss. The drain valve is automatically closed

once the controller receives a Low-Pressure signal. The engine

will continue to run for the programmed duration. “Weekly Test

Started” will be saved into the controller memory.

To protect the engine, during the Weekly Test sequence,

an OVERSPEED condition, LOW OIL PRESSURE or HIGH

ENGINE TEMP alarm will automatically shut down the engine.

4.3.2.4.4 Test engine pushbutton

The Test Engine pushbutton is found on the HOME tab

screen of the user interface touch screen. It is located just

below the source voltage value.

Pressing the Test Engine pushbutton will require the user

to input the length of the test run time. Once accepted the

controller will initiate a starting sequence by momentarily

opening the drain valve creating a drop in the system

pressure. The controller will start the engine in the

automatic mode.

The TEST sequence can be terminated by putting the

controller in the OFF mode, pressing the STOP button, or

pressing the ABORT TEST button.

All alarms are active in the test mode. To protect the engine,

in the test mode, an OVERSPEED condition will automatically

shut down the engine. A LOW OIL PRESSURE or HIGH

ENGINE TEMP alarm will automatically shut down the engine

only if all the starting conditions are cleared.

4.3.3 Minimum run time (MRT)

The MRT is only active when AUTOMATIC SHUTDOWN

is enabled. The minimum run timer (MRT) performs the

automatic stopping function in the controller. After a start

initiated by the pressure sensor or by the “REMOTE

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

AUTO START” input the controller will start and run for the

duration of the MRT.

The purpose of the MRT is to ensure that the engine is not

subjected to frequent starts in response to the pressure.

Refer to Appendix D for programming of the MRT.

4.3.4 Sequential start timer (SST)

The Sequential Start Timer is standard in all DPCT fire

pump controllers.

The controller for each unit of multiple pump units shall

incorporate a sequential timing device to prevent any one

driver from starting simultaneously with any other driver.

Each pump supplying suction pressure to another pump

shall be arranged to start within 10 seconds before the

pump it supplies. The controllers for pumps arranged in

series shall be interlocked to ensure the correct pump

starting sequence. If water requirements call for more

than one pumping unit to operate, the units shall start at

intervals of 5 to 10 seconds. Failure of a leading driver to

start shall not prevent subsequent drivers from starting.

The sequential start timer (SST) delays the starting of a fire

pump in response to the pressure sensor or “REMOTE

AUTO START” input. It does not delay a “REMOTE

MANUAL START”.

With an SST in each controller, any pump may be selected

as the lead pump by appropriate setting of the timers. If the

lead pump restores the pressure in less than the time delays

applied to the lag pumps, then the lag pumps will not start.

In addition, the provision of a sequential start timer, set to a

few seconds delay, will prevent the lead pump controller from

responding to momentary hydraulic transient pressure loss

which would otherwise start the fire pump unnecessarily.

The SST can be programmed from 0 - 300 seconds.

Typically, each pump should be delayed by 10 seconds from

the pump ahead of it.

4.3.5 Control Inputs

The DPCT has ten (10) programmable inputs.

CAUTION

SEVERE DAMAGE COULD BE CAUSED TO THE

MICROPROCESSOR BOARDS IF A VOLTAGE IS APPLIED

TO THESE INPUTS. THEY ARE INTERNALLY POWERED.

4.3.5.1 Control input descriptions

NOTICE

The below definitions of the control input functionality

assume that “Fail Safe” programming is disabled for each

control input condition.

The Control Input state definitions are as follows.

Connected - When the input is shorted by an external

contact or connection.

Disconnected - When the input is NOT shorted by an

external contact or connection.

The Control Input operations are defined as follows.

ote:N Terminal 49 is common to all the inputs

outlined below.

4.3.5.1.1 Remote manual start

When this input is in the “Connected” state, the controller

will initiate the crank cycle. Remote Manual Start will

ignore the sequential start timer (SST) and the minimum

run timer (MRT) and will require a manual stop signal to

shut down the pump. This input is typically wired to a

remote pushbutton to allow for remote manual starting of

the controller.

4.3.5.1.2 Remote manual stop

When this input is in the “Connected” state it will shut

down the engine by energizing the Fuel Stop relay.

4.3.5.1.3 Remote manual start/stop

When this input is in the “Connected” state, the controller

will initiate the the crank cycle. When this input is

“Disconnected” it will energize the Fuel Stop relay until the

engine has shut down then it will resume normal operation.

4.3.5.1.4 Remote auto start

When this input is in the “Connected” state and the SST,

if enabled, has elapsed the DPCT controller will initiate the

crank cycle. When this input is “Disconnected” the DPCT

Controller will energize the FUEL STOP relay after the MRT

has elapsed

ote:N When the controller is programmed for foam

operation, the remote auto start input be a

normally closed input that will open to initiate a

start.

4.3.5.1.5 Deluge valve start

When this input is in the “Disconnected” state and the

SST, if enabled, has elapsed the DPCT controller will initiate

crank cycle. When this input is “Disconnected” the DPCT

will energize the FUEL RELAY once the MRT has elapsed.

If programmed to automatically shut down the pump,

when the input is in a “Connected” state and the MRT has

elapsed, the controller will shut down the pump. This input

is typically wired to remote water control equipment that

starts the controller before the pressure transducer does.

4.3.5.1.6 Low suction

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication in the notification

area for Low Suction. If the controller is programmed

for Low Suction Shutdown it will initiate the shutdown

sequence. Refer to Section 5 to program Low

Suction Shutdown.

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

4.3.5.1.7 Low foam level

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication in the notification

area for Low Foam Level. If the controller is programmed for

Low Foam Shutdown it will initiate the shutdown sequence.

Refer to Section 5.6.8 to program Low Foam Shutdown.

4.3.5.1.8 Proof pressure switch

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication in the notification

area for Proof Pressure Switch. If Proof Pressure Switch

is enabled, the controller requires that this input is

“Connected” before allowing a crank cycle. Refer to Section

5.6.9 to program Proof Pressure Switch.

4.3.5.1.9 Low room temperature

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication on the main display

board for Low Room Temperature. The Common Alarm relay

will also de-energize for remote monitoring of this alarm.

4.3.5.1.10 High room temperature

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication on the main display

board for High Room Temperature. The Common Alarm relay

will also de-energize for remote monitoring of this alarm.

4.3.5.1.11 Interlock

When this input is in the “Connected” state, the DPCT

controller will not permit a start of the engine while in

Automatic mode. This input is typically used in backup style

systems. For example, the Engine Running contacts from

the backup Diesel Engine Controller are wired into this

input. When the Diesel Engine is running, it will lock out the

DPCT panel to prevent it from starting.

4.3.5.1.12 Low reservoir

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication on the main display

board for LOW RESERVOIR. The Common Alarm relay will

also de-energize for remote monitoring of this alarm.

4.3.5.1.13 High reservoir

When this input is in the “Connected” state, the DPCT

controller will signal a visual indication on the main display

board for HIGH RESERVOIR. The Common Alarm relay will

also de-energize for remote monitoring of this alarm.

4.3.5.1.14 Reservoir empty

When this input is in the “Connected” state the DPCT will

record in history when the RESERVOIR EMPTY condition

occurred. The DPCT will signal a visual indication in the

notification area of the user interface touch screen to

indicate RESERVOIR EMPTY.

4.3.5.1.15 Low fuel

When this input is in the “Connected” state the DPCT will

record in history when the LOW FUEL condition occurred.

The DPCT will signal a visual indication in the notification

area of the user interface touch screen indicating LOW

FUEL. It will also change the fuel tank graphic on the HOME

screen to indicate a low fuel condition.

4.3.5.1.16 High fuel

When this input is in the “Connected” state the DPCT will

record in history when the HIGH FUEL condition occurred.

The DPCT will signal a visual indication in the notification

area of the user interface touch screen indicating HIGH

FUEL and changes the fuel tank graphic on the HOME

screen to indicate a high fuel condition.

4.3.5.1.17 Fuel spill

When this input is in the “Connected” state the DPCT will

record in history when the FUEL SPILL condition occurred.

The DPCT will signal a visual indication in the notification

area of the user interface touch screen on the main screen

indicating FUEL SPILL.

4.3.5.1.18 Dump valve

When this input is in the “Connected” state the DPCT

will record in history when the DUMP VALVE condition

occurred. The DPCT will signal a visual indication in the

notification area of the user interface touch screen on

the main screen indicating DUMP VALVE. The DPCT

will delay initiating the crank cycle for three (3) seconds

during which time it will energize the DUMP VALVE relay.

After the three (3) seconds has elapsed the DPCT will

initiate the crank cycle while keeping the DUMP VALVE

relay energized. Once the DPCT has received an ENGINE

RUN signal response it will then de-energize the DUMP

VALVE relay.

4.3.5.2.19 Enable sequential start

When this input is in the “Connected” state and the SST is

programmed, the controller will delay all automatic starting

means for the duration of the programmed SST.

4.3.5.1.20 Relief valve discharge

When this input is in the “Connected” state the DPCT will

record in history when the RELIEF VALVE DISCHARGE

condition occurred. The DPCT will signal a visual indication

in the notification area of the user interface touch screen on

the main screen indicating RELIEF VALVE DISCHARGE.

4.3.5.1.21 Custom input

When this input is in the “Connected” state the DPCT

will record in history when this CUSTOM INPUT condition

occurred. The DPCT will also record in history what the

custom input was programmed as.

Operation

DPCT IOM INSTRUCTION OPERATION MANUAL MN124018EN January 2023 www.eaton.com

4.3.5.1.22 Undefined

Changing of the input state of this undefined input will be

shown in the diagnostic screen.

4.3.5.3 Loss of DC power

A visual indication and audible alarm are provided to

indicate DC Power Failure due to both batteries being

disconnected from the controller. This indication will also

be provided if the controller is not operating due to an

electronic board failure.

4.3.5.4 Speed switch malfunction

A visual indication and audible alarm are provided to indicate

when the following condition has occurred: The controller

is running, the engine run signal has been lost and the oil

pressure has not dropped. (Terminals 2 and 4)

4.3.5.5 Engine starter coil failure

The DPCT controller constantly monitors the health of the

engine starter solenoids. A visual indication and audible

alarm are provided if the DPCT detects that the engine

starter solenoid is disconnected or damaged.

4.3.5.6 Audible alarm silencing

A “Silence All Alarms” button is provided which can

manually silence the audible alarm for optional alarms. The

button is located on the user interface touch screen in the

bottom, right of the Notifications panel.

4.4 Output relays

The primary control outputs of the DPCT controller are dry

relay contacts. These relays are comprised of two separate

“Form C” outputs for: Engine Run, Low Fuel, Auto Mode,

and Common Alarm.

The Engine Run relay is UL/CSA rated at 10A, ½Hp, 240Vac.

The remaining alarm relays are UL/CSA rated at 8A, 250Vac.

The DC rating is 8A, 30Vdc

Each relay has a green LED adjacent to it on the I/O board

to indicate the relay status.

If the LED is illuminated the relay is energized, If the LED is

not illuminated then the relay is de-energized.

4.4.1 Engine run (1CR)

The Engine Run (1CR) relay is used for remote monitoring

when the engine is running. When the engine speed switch

sends a signal to the DPCT controller this relay will energize.

4.4.2 Low fuel (2CR)

The Low Fuel (2CR) relay is used for remote monitoring of

the fuel tank level. When the level switch in the fuel tank

falls below its pre-set level this relay will energize.

4.4.3 Auto mode (3CR)

The Auto Mode (3CR) relay is used to indicate that the

controller’s Manual/OFF/Auto selector switch is in the

Automatic mode.

4.4.4 Common alarm (4CR)

The Common Alarm (4CR) relay is used to signal pump

room or engine trouble alarms. This relay is energized

under normal conditions and will de-energize during an

alarm condition.

4.5 Engine Alarm Functions

4.5.1 Engine overspeed

An “Engine Overspeed” alarm will shut down the engine

regardless of the start condition in any mode that the

controller is set to. The signal is sent from the engine to

the controller.

4.5.2 Fail to start

After 6 cranking attempts, three attempts per battery, the

“Fail To Start” indicator will appear in the notifications

area of the user interface touch screen. There will be

an audible alarm to company this condition. Attention

to the diesel engine and its associated equipment is

required immediately.

4.5.3 High engine temperature

This alarm indicates that the coolant temperature in the

water jackets is extremely hot. The over temperature switch

on the diesel engine signals this to the controller. The

engine continues to run in the AUTO and MANUAL modes.

During a manual engine test and during the weekly test

cycle the engine will shut down in the event of this alarm.

4.5.4 Low oil pressure

The controller has a built-in delay which bypasses the low

oil pressure alarm during engine start up. After the delay

has expired, should the engine receive a “Low Oil Pressure”

signal, the controller will initiate an alarm. The engine will

continue to run in the “AUTO” and “MANUAL” mode. During

a manual engine test and during the weekly test cycle this

alarm will automatically shut down the diesel engine.

This manual suits for next models

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