Pulsafeeder MPC Instruction manual

Installation,
Operation &
Maintenance
Manual
MPC®
SPEED CONTROLLER
IOM-CTL-2000-Rev.I
72-900-05 Rev A (Pulsafeeder SPO)

72-900-05 Rev A
ii
MPC™ FACTORY SERVICE POLICY
Your MPC is a state of the art microprocessor based motor speed control for use
with Pulsafeeder Diaphragm Metering Pumps. It includes extensive on-board
diagnostics. If you are experiencing a problem with your MPC, first review the
on-screen information, then consult the troubleshooting guide. If the problem is
not covered or cannot be solved, please contact your local authorized Sales
Representative or our Technical Service Department at [phone] for
further assistance.
Trained individuals are available to diagnose your problem and arrange a
solution. Solutions may include purchasing a replacement unit or returning the
MPC to the factory for inspection and repair. All returns require a Return Material
Authorization (R.M.A.) number to be issued by Pulsafeeder. Replacements
purchased under a possible warranty situation may be credited after an
examination of the original MPC by Pulsafeeder personnel.
Certain components may be purchased for replacement. Refer to Section 19 –
Maintenance & Spare Parts for more information and part numbers. Parts
purchased to correct a warranty issue may be credited after examination of the
original parts by Pulsafeeder personnel. Parts returned for warranty
consideration that test satisfactorily, will be sent back to the originator via freight
collect.
Any field modifications will void the Pulsafeeder MPC warranty. Out-of-
warranty repairs will be subject to Pulsafeeder's standard bench fees and
testing costs associated with replacement components.
FCC Warning
This equipment generates and uses radio frequency energy. If not installed and
used properly, in strict accordance with the manufacturer’s instructions, it may
cause interference to radio communications. Operation of this equipment in a
residential area is likely to cause interference. In such cases, the user at their
own expense will be required to take whatever measures necessary to correct
the interference.
Copyright
Copyright © 2007-2014 Pulsafeeder, Inc. All rights reserved.
Information in this document is subject to change without notice. No part of this
publication may be reproduced, stored in a retrieval system or transmitted in any
form or any means electronic or mechanical, including photocopying and
recording for any purpose other than the purchaser’s personal use without the
written permission of Pulsafeeder.

72-900-05 Rev A
iii
Table of Contents
INSTALLATION,OPERATION &MAINTENANCE MANUAL................................................................................. I
MPC™ FACTORY SERVICE POLICY.....................................................................................................I
TABLE OF CONTENTS.................................................................................................................................. III
FOR THE REMAINDER OF THIS BULLETIN,THE FOLLOWING CONVENTIONS ARE IN EFFECT. ...............................V
1. INTRODUCTION ...................................................................................................................................... 1
2. FORWARD ............................................................................................................................................. 1
3. DESCRIPTION ........................................................................................................................................ 1
3.1 MPC Standard Features........................................................................................................2
3.2 Options...................................................................................................................................3
4. SAFETY CONSIDERATIONS ..................................................................................................................... 3
4.1 General Safety .......................................................................................................................3
4.2 Electrical Safety.....................................................................................................................3
4.3 Fire Safety ..............................................................................................................................3
4.4 Mechanical Safety .................................................................................................................4
4.5 Hydraulic Safety ....................................................................................................................4
4.6 Liability Exclusion.................................................................................................................4
5. PUMP SUITABILITY TO SITE OF INSTALLATION......................................................................................... 5
6. TRANSPORT AND STORAGE.................................................................................................................... 6
6.1 Consignment receipt and unpackaging..............................................................................6
6.2 Handling .................................................................................................................................6
6.3 Lifting......................................................................................................................................6
6.4 Recycling and end of product life........................................................................................6
7. STORAGE INSTRUCTIONS ....................................................................................................................... 8
7.1 Short Term (0 - 12 months)...................................................................................................8
7.2 Long Term (12 months or more)..........................................................................................8
8. INSTALLATION AND WIRING.................................................................................................................... 9
8.1 Location..................................................................................................................................9
8.2 Installation Notes...................................................................................................................10
8.3 Installation guidelines for EMC compliance.......................................................................10
8.3.1 The cover must be installed properly..........................................................................10
8.3.2 Shielded cables used for analog inputs and outputs................................................10
8.3.3 Proper Earth grounding ................................................................................................10
8.3.4 Ensure Power mains are properly filtered for isolation from line transients,.........10
8.3.5 Lightning strikes or other electrical noise sources...................................................10
8.4 Electrical Wiring ....................................................................................................................11
8.4.5 Analog input signals, so the MPC can accept a process input signal.....................11
8.4.6 Power Wiring Information.............................................................................................14
8.4.7 Power Wiring Diagram ..................................................................................................15
8.4.8 Control Input/Output Signal Wiring .............................................................................18
8.5 Check Wiring and Close Access Cover ..............................................................................20
8.6 Confirm Correct Incoming Power........................................................................................20
9. START UP AND OPERATION.................................................................................................................... 22
9.1 Overview.................................................................................................................................22
9.2 Keypad/Lamp Operation.......................................................................................................23
9.3 Confirm Display and Keypad Functionality........................................................................23
9.4 Flow Display...........................................................................................................................24
9.5 Wrapping up...........................................................................................................................24
10. INPUT/OUTPUT SETUP.................................................................................................................. 26
10.1 Analog Input Setup................................................................................................................26

72-900-05 Rev A
iv
10.2 Digital Input Setup.................................................................................................................26
10.3 Analog Output Setup.............................................................................................................26
10.4 Digital Output Setup..............................................................................................................26
10.5 Pump Flow Calibration..........................................................................................................27
10.6 Analog Input Calibration.......................................................................................................31
10.7. Analog Output Calibration....................................................................................................34
10.8 Display Contrast Adjustment...............................................................................................35
10.9 Changing the Motor Base Frequency..................................................................................35
11. ALARM AND ERROR MESSAGES ................................................................................................... 36
12. EXTENDING YOUR HAND-HELD CONTROLLER................................................................................ 38
12.1 Obtain New Cable:.................................................................................................................38
12.2 Removal and Connection of the Cable from the Handheld: .............................................38
13. SPECIFICATIONS .......................................................................................................................... 42
14. MENU MAPS ................................................................................................................................ 45
15. FACTORY DEFAULT VALUES......................................................................................................... 47
16. RETRIEVAL OF SETUP INFORMATION............................................................................................. 47
17. SPECIAL KEYPRESS ACCESS ....................................................................................................... 47
18. TROUBLESHOOTING GUIDE........................................................................................................... 48
19. MAINTENANCE &SPARE PARTS ................................................................................................... 49
19.1 Operating Precautions..........................................................................................................49
19.2 Cleaning and Decontamination............................................................................................49
19.3 User Replaceable Parts for the MPC...................................................................................50

72-900-05 Rev A
v
Conventions
For the remainder of this bulletin, the following Conventions are in effect.
AWARNING DEFINES A CONDITION THAT COULD CAUSE DAMAGE TO BOTH
THE EQUIPMENT AND THE PERSONNEL OPERATING IT.THIS MANUAL MUST
BE CONSULTED IN ALL CASES WHERE THE WARNING SYMBOL IS MARKED
IN ORDER TO FIND OUT THE NATURE OF THE POTENTIAL HAZARDS AND
ANY ACTIONS WHICH HAVE TO BE TAKEN TO AVOID THEM.
CAUTION, POSSIBILITY OF ELECTRIC SHOCK AND/OR
ELECTROCUTION HAZARD!
Notes are general information meant to make operating the
equipment easier.
Tips have been included within this bulletin to help the operator
run the equipment in the most efficient manner possible. These
“Tips” are drawn from the knowledge and experience of our
staff engineers, and input from the field.
Revision History:
Rev E (3-25-05)
-Section 3.1 Description, added 3-phase vs. single-phase info
-Change description of digital output specification
-New figure 2 (pump mounting)
-Updated analog in, analog out, and flow calibration instructions
-Update error handling text, Section 11
-Add specifications for voltage range and ELCB’s
-Add safety warnings about inrush current and capacitor discharge
throughout
Rev F (7-25-06)
-Added nametag diagram and note on proper input voltage selection
on page 9
-Added section 8.5 on adjusting motor base frequency
-Added sample digital output diagram in section 5.3.4
Rev H (9-26-07)
-Added clarification on digital output capability, sections 1.2, 5.3.4,
and 7.4
-Motor information added, sections 1.2, 1.3, and 11
-Added missing step in calibration instructions, section 8.1.1
Rev I (05-22-2014)
Updated to reflect requirements of UL 61010-1 3rd Edition

1. Introduction
The Metering Pump Controller (MPC) is a microprocessor based motor speed
control device, for use with Pulsafeeder mechanical and hydraulic diaphragm
metering pumps. It has been designed for simplicity, yet still has many advanced
features that allow the MPC to operate in a wide variety of environments and
applications.
This instruction manual covers the MPC only. All standard features are covered
in this manual and most options have instructions where applicable. For
information specific to the metering pump or any other accessories, please refer
to the appropriate IOM.
2. Forward
The pumps to which these “instructions” refer to are designed for use in industrial
areas and therefore cannot be treated as retail products. The present
documentation gives instructions to be used by qualified personnel only. It must
be used in compliance with the regulations, laws and technical standards in force
and cannot, under any circumstances, take the place of plant standard or
additional regulations, including any which are not legally enforceable, which
have been issued with the scope of ensuring safety.
Equipment with special manufacturing or constructive variances may differ in
details with respect to this description.
In case of any difficulty, please contact PULSAFEEDER, INC. Technical Service.
The MPC is rated for NEMA 4x locations as identified on the controller
nameplate.
3. Description
The MPC is an advanced pump controller that is physically attached to the
pump. Its purpose is to precisely adjust output flow of a process media by
means of pump motor speed control.
The MPC is designed for a wide variety of control applications. The device is
factory configured and calibrated for the attached pump. The human/machine
interface is user friendly. Local setup and control is achieved through the
keypad and a backlit two-line liquid crystal display. Basic operation is simple
with dedicated function keys eliminating the need for a sophisticated menu
system. The MPC responds immediately to user commands. Pump output is
displayed as Gallons per Hour (GPH), Liters per Hour (LPH), Strokes per
Minute (SPM), Percent Speed, or Percent Flow (% of total pump capacity).
Digital and analog inputs will support a variety of industry standard signals to
offer flexible remote control.
The MPC is designed to simplify and automate the calibration of pump flow and
analog signals. Flow calibration uses on-screen prompting and automated
pump operation to eliminate stopwatches, calculators and human inaccuracies.
Analog signal calibration is also accomplished by simple keypad entry. It

includes a real-time display of signal level. This eliminates the need for external
meters.
The MPC readily accepts PULSAlarm®leak detection and tank level inputs.
These may be configured to stop the pump and/or activate an alarm relay.
The MPC is factory configured to operate at either 60 Hz or 50 Hz input. No
special modifications, settings, or adjustments are required. All MPC controllers
are supplied with a motor rated at 60 Hz, regardless of the supply frequency.
The controller/motor combination allows for full pump speed and flow even
when operating from a 50 Hz input. Users in locations with 50 Hz AC supply do
not have to de-rate pump flow with this controller.
The motor used with the MPC is a three-phase motor; however the three-phase
power is generated internally by the MPC itself. Do not be confused by the
motor nameplate. Input power to the MPC is single-phase AC only; either 115
or 230 volts (see Section 13, Specifications for acceptable input voltage
range). The nameplate on the rear of the MPC controller lists the appropriate
supply requirements.
At lower stroke frequencies (below 3:1 turndown), the MPC employs intermittent
motor actuation technology. This allows the user to achieve reliable low-end
performance not usually associated with variable speed controllers. By
completing a full pump stroke at constant speed, and varying the interval
between strokes, hydraulic stability and process consistency is maintained.
The AC drive used in the MPC maintains tight control over voltage and current
supplied to the pump motor. This results in lower motor operating temperatures
and less stress on motor windings, resulting in longer motor life and more
reliable overall operation. This holds true even when metering in the lower flow
ranges where the MPC uses intermittent operation.
3.1 MPC Standard Features
Remote keypad and display for ease of operation
Display pump flow in GPH, LPH, Strokes per Minute, or % of full pump
flow
One 4-20 mA analog input signal for flow control
One 4-20 mA analog output signal for flow feedback
Two configurable digital inputs
Three configurable digital outputs
Advanced turndown capability
NEMA 4X and IP56 ratings
Available for 115 or 230 Volts, 50 or 60 Hz, single phase AC power
Security code lockout of menus
Commercial duty motor as standard for indoor, dry locations only

3.2 Options
Variable hand-held controller cable length, up to 1,000 feet from pump
Alternate motor selections available for outdoor, washdown, chemical
duty, and other special applications
4. Safety Considerations
Read and understand all related instructions and documentation before
attempting to install or maintain this equipment
Observe all special instructions, notes, and cautions.
Act with care and exercise good common sense and judgment during
all installation, adjustment, and maintenance procedures.
Ensure that all safety rules, work procedures, and standards that are
applicable to your company and facility are followed during the
installation, maintenance, and operation of this equipment.
4.1 General Safety
The MPC was designed as a controller for operation solely with
Pulsafeeder metering pumps. Use for any other application is considered
un-safe and voids all certification markings and warranties.
4.2 Electrical Safety
The MPC can be considered an industrial process controller. Improper
application and use can be hazardous. You are solely responsible for its
use.
The MPC's electrical installation must conform to all relevant electrical
codes. Installation and electrical maintenance must be performed by a
qualified electrician. Before installing or servicing this device, all power
must be disconnected from the source at the main distribution panel.
The MPC emits electro-magnetic energy and may generate radio
frequency interference. Its use is restricted to industrial applications. You
are responsible for shielding this energy/interference.
Certain wiring procedures may require that the user wear a wrist strap to
dissipate static charges.
4.3 Fire Safety
In case of electrical fire, use a Class C fire extinguisher. Never use water
to extinguish a Class C fire.
Class C fires involve electrical equipment, such as appliances, wiring,
circuit breakers and outlets. Never use water to extinguish class C fires -
the risk of electrical shock is far too great! Class C extinguishers do not

have a numerical rating. The C classification means the extinguishing
agent is non-conductive. Geometric symbol (blue circle)
Wait a minimum of 3 minutes after disconnecting power before
servicing the MPC or pump motor. Capacitors retain a charge even
after power is removed from the controller.
4.4 Mechanical Safety
Users should note that the pump motor is always under the control of the
MPC, and as such may actuate without warning. Care should be taken to
keep loose clothing and other objects away from the pump motor.
The MPC was designed to be service free. It contains no user-
maintainable components. Disassemble the MPC enclosure only for
initial field wiring, or as instructed to do so within this manual. Evidence
of unauthorized disassembly shall void the warranty.
4.5 Hydraulic Safety
Thoroughly review and adhere to the contents of the pump Installation,
Operation, Maintenance and Instruction manual for installation of the
Pulsafeeder metering pump. As a microprocessor controlled device, the
MPC may activate the pump motor without warning –generating
hydraulic pressure and fluid flow. Care should be taken to protect both
users and systems should the pump activate.
4.6 Liability Exclusion
Pulsafeeder, Inc. is unable to monitor the observance of the
instructions given in this manual, nor verify the actual working
conditions and installation of the equipment, the correct operation,
the using and maintenance of the equipment and accessories. An
incorrect installation, or misuse of the equipment, may cause
serious damage and may pose a danger to persons or property.
Any anomalies must be reported to the maintenance supervisor.
The user is not authorized to tamper with the machine for any
reason.
Attempts to disassemble, modify or tamper in general by
unauthorized personnel will void the guarantee and will release
Pulsafeeder, Inc. from any liability for damage caused to persons or
property resulting from such actions.

Pulsafeeder, Inc. is considered released from any liability in the following
cases:
-improper installation;
-improper use of the equipment by non-professional or
inadequately trained operators;
-use not in compliance with regulations in the Country of use;
-lack of maintenance or improperly performed;
-use of non-original spare parts or incorrect parts for the model in
question;
-total or partial failure to observe the instructions;
-exceptional environmental events.
DO NOT PERFORM ANY WORK ON THE PUMP, MOTOR OR MPC
CONTROL UNIT WITH ELECTRICAL POWER CONNECTED TO THE
MPC CONTROL UNIT. DO NOT OPERATE MPC UNIT WITH THE
COVER REMOVED. DANGER OF ELECTRONIC SHOCK AND
MECHANICAL PINCH HAZARD!
INSTALLATION AND REPAIRS SHOULD ONLY BE PERFORMED BY
AUTHORIZED PERSONNEL!
FOLLOW ALL SAFETY/ LOCAL LOCK-OUT, TAG-OUT
PROCEEDURES!
5. Pump Suitability to Site of Installation
Upon equipment receipt, verify that pumps have not received any damage due to
transportation and are complete with every eventual accessory. In case anomalies or
damages are discovered prior to installation, please contact PULSAFEEDER, INC.
Technical Service.

6. Transport and Storage
6.1 Consignment receipt and unpackaging
Immediately after receipt of the equipment it must be checked against
the delivery/shipping documents for its completeness and that there has
been no damage in transportation.
Check any crate, boxes or wrappings for any accessories or spare parts
that may be packed separately with the equipment or attached to side
walls of the box or equipment.
Each product has a unique serial number. Check that this number
corresponds with that advised and always quotes this number in
correspondence as well as when ordering spare parts or further
accessories.
Shortages or damage should be reported immediately to the carrier and
your Pulsafeeder Representative.
6.2 Handling
Boxes, crates, pallets or cartons may be unloaded using fork lift vehicles
or slings dependent on their size and construction.
6.3 Lifting
A crane must be used for all controller/pump sets in excess of 25 kg (55
lb). Fully trained personnel must carry out lifting, in accordance with local
regulations.
Slings, ropes and other lifting gear should be positioned where they
cannot slip and where a balanced lift is obtained.
6.4 Recycling and end of product life
At the end of the service life of the product or its parts, the relevant
materials and parts should be recycled or disposed of using an
environmentally acceptable method and local requirements. If the
product contains substances that are harmful to the environment, these
should be removed and disposed of in accordance with current
regulations. This also includes the liquids and/or gases that may be used
in the "seal system" or other utilities.

Make sure that hazardous substances are disposed of safely and that
the correct personal protective equipment is used. The safety
specifications must be in accordance with the current regulations at all
times.
(Pulsar Pump arrangement shown)

7. Storage Instructions
The MPC can be successfully stored for extended periods. The key to this
success is temperature and humidity control.
7.1 Short Term (0 - 12 months)
The MPC should be stored in a temperature and humidity controlled
environment. It is preferable to keep the temperature constant in the
range of -18to 60Celsius (0to 140Fahrenheit). The relative
humidity should be 0 to 90% non-condensing.
If the MPC is installed on the pump, it should not be removed during this
period provided the above conditions can be applied to the pump as
well.
7.2 Long Term (12 months or more)
Storage of the MPC for periods of longer than twelve months is not
recommended. If extended storage is unavoidable the MPC should be
stored in accordance with those conditions stipulated for Short Term
Storage. In addition, a porous bag of 85g (3 oz) silica gel or similar
dessicant should be placed inside the enclosure. The cover should be re-
installed to seal the desiccant within the enclosure. The conduit
connections must be tightly capped. . Inspect the unit carefully for any
signs of damage and remove the desiccant before placing it into
operation
Special note for long-term storage:
If AC input power has not been applied to the MPC for a period
greater than 12 months, the controller must be prepared for
operation. The MPC should have AC power applied at the input for a
period of 8 hours before placing pump into normal operation. Refer
to Installation and Wiring section for AC power connection
instructions.

8. Installation and Wiring
8.1 Location
Review the Safety section prior to installing the MPC. It contains
information required to properly install and operate the MPC in an
industrial environment.
The site selected for the installation of your MPC is largely dependent on
that of the metering pump. Review the Installation, Operation, and
Maintenance manual provided with your metering pump. It details system
related issues that are important to proper operation of the pump.
Consider the following MPC related issues when selecting a site. Avoid
locations where the MPC would be subjected to extreme cold or heat.
The installation of this device must comply with national, state and local
codes.
Approximately 6 in (150 mm) of clearance should be maintained around
all 4 sides of the MPC.
No special services (e.g. air, liquid cooling) are required. Negligible
sound is emitted by the MPC - therefore, no special precautions are
necessary.
The MPC controller must be secured to an appropriate support before
use. Use four 3/8” (M8) bolts or anchors to secure the MPC controller
and pump to a fixed base. No assembly is required for the MPC
controller itself.
Figure 1 –Typical Installation.

AVOID LOCATIONS WHERE THE MPC WOULD BE SUBJECTED TO EXTREME
COLD OR HEAT [LESS THAN 0CELSIUS (32FAHRENHEIT)OR GREATER THAN
40 CELSIUS (104 FAHRENHEIT)] OR DIRECT SUNLIGHT.FAILURE TO
OBSERVE THIS WARNING COULD DAMAGE THE MPC AND VOID ITS WARRANTY.
8.2 Installation Notes
The MPC is a microprocessor-based controller that uses electro-static
sensitive CMOS components. Do not make any (low or extra-low
voltage) electrical connections without adequately grounding the MPC
and the worker to eliminate an electro-static charge between the two. A
conductive wrist strap worn by the worker and attached to the MPC
enclosure is adequate to satisfy this requirement.
Conduit connections can carry fluids and vapors into the MPC causing
damage and void the warranty. Care should be taken when installing
conduit to protect against fluid/vapor entry. If necessary, provide sealed
entries or conduit drains near the point of entry. The controller comes
equipped with liquid-tight connectors for signal cable entry points. The
user must supply the correct connection for the power entry, as per the
local codes and requirements. Any cable entrances that are not used
should be appropriately sealed against moisture and vapors.
The safety of any system incorporating the MPC is the responsibility of the
assembler of the system.
8.3 Installation guidelines for EMC compliance
8.3.1 The cover must be installed properly.
8.3.2 Shielded cables used for analog inputs and outputs
8.3.3 Proper Earth grounding
8.3.4 Ensure Power mains are properly filtered for isolation from line
transients,
8.3.5 Lightning strikes or other electrical noise sources.
Failure to observe the guidelines above may lead to erratic and possibly
unsafe operating conditions.

8.4 Electrical Wiring
The MPC has many advanced features that may make wiring the unit
appear complicated. Wiring is actually very simple –one high voltage
connection is all that is required to take advantage of the majority of the
MPC's features.
If you will be mounting your handheld controller in a remote location,
refer to the Section Extending your Hand-Held Controller at this time.
WHILE THE MPC WIRING REQUIREMENTS ARE VERY SIMPLE,ALWAYS KEEP IN MIND
THAT ACCESS TO THESE CONNECTORS REQUIRES THE REMOVAL OF THE COVER,AND
AS SUCH THIS PROCEDURE SHOULD ONLY BE PERFORMED BY A TRAINED
PROFESSIONAL.
WAIT A MINIMUM OF 3MINUTES AFTER DISCONNECTING POWER BEFORE SERVICING
THE MPC OR PUMP MOTOR.CAPACITORS RETAIN A CHARGE EVEN AFTER POWER IS
REMOVED FROM THE CONTROLLER.
It is highly recommended that you take a step-by-step approach to wiring and
confirming proper MPC operation:
8.4.1 Make the high voltage connections (ref. Section 8.4.7). These
will allow you to operate the MPC and attached Pulsafeeder
pump.
8.4.2 Decide which low voltage Inputs and Outputs (e.g., 4-20mA in)
will be used and make those connections (ref. Section 8.4.8).
8.4.3 Power-up and test the MPC to confirm the connections and
check for proper operation.
8.4.4 Configure the software via the menu system for the desired
operational conditions. Depending on the anticipated function,
users may need to enter settings for the following:
8.4.5 Analog input signals, so the MPC can accept a process input
signal.
i. Analog output settings, so the MPC can provide a process
feedback signal.
ii. Digital input settings, for example start/stop and/or leak
detection inputs.
iii. Digital output settings, for example status and/or alarm
outputs.
iv. Conduct a final power-up and test the MPC to confirm the
connections and check for proper operation.
v. Go to the Section 9 –Startup & Operation for details on
how to perform the power-up tests. Controller Layout

The design of the MPC incorporates all control circuitry onto one easily
accessed circuit board. This board is located on the inside of the main
controller cover. Gain access to this board by removing the 10 bolts and gently
allowing the cover to hinge downwards.
USE CARE NOT TO PULL ON OR ATTEMPT TO COMPLETELY SEPARATE THE COVER
FROM THE MPC UNIT,AS THE ELECTRICAL CONNECTIONS MAY BECOME UNPLUGGED
AND/OR DAMAGED.THIS CAN RESULT IN IMPROPER OPERATION.

FIGURE 2–CONDUIT CONNECTION LAYOUT

8.4.6 Power Wiring Information
Verify the correct supply voltage (115VAC or 230VAC) with the
nameplate affixed to your MPC. Ensure that your supply voltage
matches the MPC configuration.
Wires should be routed within the enclosure in a manner that
maintains separation between low voltage and extra-low voltage
conductors.
Applicable national and local electrical codes take precedence over
recommendations in the table below.
A circuit breaker or fuse must be provided as noted below.
Upon initial application of AC power, a current inrush will occur to
charge the DC bus capacitors. This is normal operation, and
breakers and other circuit protection devices should be sized
accordingly.
Power
Requirements
Recommended Minimum Wiring and Circuit Breaker
115 VAC Operation
230 VAC Operation
Actual
Draw
Circuit
Breaker
Wire
Size
Wire
Size
Safety
Approvals1
Actual
Draw
Circuit
Breaker
Wire
Size
Wire
Size
Safety
Approvals1
MPC and 0.25
Hp motor
7.0 A
10 A
14
AWG
2.5
mm2
UL, CUL,
CE
3.5 A
10 A
14
AWG
2.5
mm2
UL, CUL,
CE
MPC and 0.33
Hp motor
7.0 A
10 A
14
AWG
2.5
mm2
UL, CUL,
CE
3.5 A
10 A
14
AWG
2.5
mm2
UL, CUL,
CE
MPC and 0.5 Hp
motor
9.4 A
15 A
14
AWG
2.5
mm2
UL, CUL,
CE
5.2 A
10 A
14
AWG
2.5
mm2
UL, CUL,
CE
MPC and 0.75
Hp motor
16.8 A
25 A
12
AWG
4.0
mm2
UL, CUL
9.4 A
15 A
14
AWG
2.5
mm2
UL, CUL
MPC and 1.0 Hp
motor
16.8 A
25 A
12
AWG
4.0
mm2
UL, CUL
9.4 A
15 A
14
AWG
2.5
mm2
UL, CUL
MPC and 1.5 Hp
motor
24.2 A
35 A
10
AWG
6.0
mm2
UL, CUL
12.2 A
20 A
14
AWG
2.5
mm2
UL, CUL
Table 1 –Sizing Branch Circuits
Note 1: Applicable standards are Cenelec EN61326-1, UL61010-1, and CSA
C22.2#61010-1 and EN61010-1 3rd edition.
The MPC requires one connection to an external power source. It uses
this same connection to power its own supply, as well as the AC pump
motor. You must take all of these loads into consideration when sizing

the branch circuit (see Table 1). A circuit breaker or disconnect switch
with fuses must be wired in series with terminals L1 and L2/N in
accordance with all applicable local and national electrical codes and
regulations. The circuit breaker or disconnect switch shall be located in
close proximity to the MPC controller. It must be positioned such that it is
not difficult to operate and must be marked or labeled to identify it as the
power disconnect for the MPC.
The MPC controller is provided with a ¾ inch NPT inlet for incoming AC
power wiring at the rear (pump gearbox end) of the enclosure. Utilize the
appropriate conduit fittings to route and seal the supply wires into the
MPC enclosure.
These wires are secured to the terminal strip at the right-hand end of the
AC drive as per Table 2 and Figure 3.Remove approximately 0.20 –
0.25 inches, (6mm) of insulation from the end of each conductor. Loosen
the terminal strip screw, and insert the stripped wire end fully into the
terminal. Tighten the screw to 4.5 in-lbs. (0.5 Nm) to secure the
conductor. Make certain that the terminal grips the wire, not the
insulation. Ensure that all wiring meets applicable local and national
codes and requirements.
8.4.7 Power Wiring Diagram
MPC Drive
Terminal
115 V Operation
230 V Operation
L1
Line
Line
L2 / N
Neutral
Line/Neutral
Earth
Ground
Ground
Table 2 –AC Drive Terminals
Note: Power wiring should have a rating of at least 300 volts AC (rms) and a
temperature rating of at least 105 Degrees C.
A circuit breaker or disconnect switch with fuses, must be provided in accordance
with all applicable local and national electrical codes and regulations. Size
external fusing/breaker for ratings for the wiring used for the unit.
Applicable national and local electrical codes take precedence over
recommendations made here.