Woodward DTSC-50 User manual

37441C
Manual
Software Version: 1.00xx or higher
Manual 37441C
DTSC-50
ATS Controller

Manual 37441C DTSC-50 - ATS Controller
Page 2/106 © Woodward
WARNING
Read this entire manual and all other publications pertaining to the work to be performed before in-
stalling, operating, or servicing this equipment. Practice all plant and safety instructions and precau-
tions. Failure to follow instructions can cause personal injury and/or property damage.
The engine, turbine, or other type of prime mover should be equipped with an overspeed
(overtemperature, or overpressure, where applicable) shutdown device(s), that operates totally inde-
pendently of the prime mover control device(s) to protect against runaway or damage to the engine,
turbine, or other type of prime mover with possible personal injury or loss of life should the mechani-
cal-hydraulic governor(s) or electric control(s), the actuator(s), fuel control(s), the driving mecha-
nism(s), the linkage(s), or the controlled device(s) fail.
Any unauthorized modifications to or use of this equipment outside its specified mechanical, electri-
cal, or other operating limits may cause personal injury and/or property damage, including damage to
the equipment. Any such unauthorized modifications: (i) constitute "misuse" and/or "negligence" with-
in the meaning of the product warranty thereby excluding warranty coverage for any resulting damage,
and (ii) invalidate product certifications or listings.
CAUTION
To prevent damage to a control system that uses an alternator or battery-charging device, make sure
the charging device is turned off before disconnecting the battery from the system.
Electronic controls contain static-sensitive parts. Observe the following precautions to prevent dam-
age to these parts.
•
Discharge body static before handling the control (with power to the control turned off, contact a
grounded surface and maintain contact while handling the control).
•
Avoid all plastic, vinyl, and Styrofoam (except antistatic versions) around printed circuit boards.
•
Do not touch the components or conductors on a printed circuit board with your hands or with
conductive devices.
OUT-OF-DATE PUBLICATION
This publication may have been revised or updated since this copy was produced. To verify that you
have the latest revision, be sure to check the Woodward website:
http://www.woodward.com/pubs/current.pdf
The revision level is shown at the bottom of the front cover after the publication number. The latest
version of most publications is available at:
http://www.woodward.com/publications
If your publication is not there, please contact your customer service representative to get the latest
copy.
Important definitions
WARNING
Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided, could result in damage to equipment.
NOTE
Provides other helpful information that does not fall under the warning or caution categories.
Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be
correct and reliable. However, Woodward assumes no responsibility unless otherwise expressly undertaken.
© Woodward
All Rights Reserved.

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 3/106
Revision History
Rev.
Date
Editor
Change
NEW
09-08-28
TE
Release
A
09-10-09
TE
Minor corrections
B
10-03-10
TE
UL Certification
C
12-04-10
TE
Manual
•Minor corrections
New device features & updates
Requirements: DTSC-
50 ATS control with software version 1.0004 or higher and device revision B or higher.
The described changes relate to the previous software version 1.0003.
New features
•Modbus protocol was implemented
Content
CHAPTER 1. GENERAL INFORMATION ....................................................................................... 7
Related Documents.................................................................................................................................. 7
Overview .................................................................................................................................................. 8
CHAPTER 2. DTSC-50 OVERVIEW.......................................................................................... 10
CHAPTER 3. ELECTROSTATIC DISCHARGE AWARENESS .......................................................... 11
CHAPTER 4. HOUSING ........................................................................................................... 12
Dimensions / Panel Cut-Out................................................................................................................... 12
Installation .............................................................................................................................................. 13
CHAPTER 5. WIRING DIAGRAMS ............................................................................................. 14
CHAPTER 6. CONNECTIONS.................................................................................................... 15
Terminal Arrangement ........................................................................................................................... 15
Power supply.......................................................................................................................................... 16
Voltage Measuring ................................................................................................................................. 17
Voltage Measuring: Generator ..................................................................................................... 18
Voltage Measuring: Mains............................................................................................................ 20
Discrete Inputs ....................................................................................................................................... 22
Discrete Inputs: Bipolar Signals ................................................................................................... 22
Discrete Inputs: Operation Logic.................................................................................................. 23
Relay Outputs......................................................................................................................................... 24
Interfaces................................................................................................................................................ 25
Service Port.................................................................................................................................. 25

Manual 37441C DTSC-50 - ATS Controller
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CHAPTER 7. OPERATION AND NAVIGATION.............................................................................. 27
Operation and Display ........................................................................................................................... 28
Purpose of the Status LEDs ........................................................................................................ 28
Operating the DTSC-50............................................................................................................... 28
Acknowledging Alarm Messages................................................................................................. 28
Configuring the DTSC-50 ............................................................................................................ 29
Display of the Operating Values .................................................................................................. 29
Default Operating Value Display.................................................................................................. 30
Cycling Through the Displayed Operating Values ....................................................................... 30
Alarm Messages.......................................................................................................................... 33
Configuration Displays................................................................................................................. 35
Display Hierarchy......................................................................................................................... 37
CHAPTER 8. FUNCTIONAL DESCRIPTION ................................................................................. 38
Overview ................................................................................................................................................ 38
Operating Modes ................................................................................................................................... 39
Operating Mode STOP ................................................................................................................ 39
Operating Mode MANUAL........................................................................................................... 40
Breaker Closure Limits .......................................................................................................................... 47
Generator Circuit Breaker............................................................................................................ 47
Mains Circuit Breaker .................................................................................................................. 47
Functional Description of the 2nd CB Close Delay Time ........................................................................ 48
CHAPTER 9. CONFIGURATION................................................................................................. 49
Restoring Default Values ....................................................................................................................... 49
Resetting Via the Front Panel...................................................................................................... 49
Resetting Via LeoPC1 ................................................................................................................. 49
Configuration Via the Front Panel.......................................................................................................... 49
Configuration Using the PC ................................................................................................................... 50
Editing the Configuration File................................................................................................................. 51
CHAPTER 10. PARAMETERS ................................................................................................... 52
Measuring .............................................................................................................................................. 53
Application ............................................................................................................................................. 54
Engine.................................................................................................................................................... 55
Engine: Start/Stop Automatic ...................................................................................................... 55
Breaker .................................................................................................................................................. 56
Emergency Power (AMF)....................................................................................................................... 57
Password ............................................................................................................................................... 58
Monitoring .............................................................................................................................................. 59
Monitoring: Generator.................................................................................................................. 59
Monitoring: Generator Overfrequency ......................................................................................... 59
Monitoring: Generator Underfrequency ....................................................................................... 60
Monitoring: Generator Overvoltage ............................................................................................. 61
Monitoring: Generator Undervoltage ........................................................................................... 62
Monitoring: Mains ........................................................................................................................ 63
Monitoring: Mains Failure Limits.................................................................................................. 63
Monitoring: Engine Start Fail ....................................................................................................... 66
Monitoring: Breakers ................................................................................................................... 66
Monitoring: Engine Unintended Stop ........................................................................................... 67
Discrete Inputs ....................................................................................................................................... 68
Relay Outputs ........................................................................................................................................ 69
Counter .................................................................................................................................................. 71
Communication Interfaces..................................................................................................................... 73
System ................................................................................................................................................... 74
Codes .......................................................................................................................................... 74
Factory Settings........................................................................................................................... 74
Parameter Access Level.............................................................................................................. 74
Versions....................................................................................................................................... 75

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 5/106
CHAPTER 11. INTERFACES AND PROTOCOLS .......................................................................... 76
Interfaces................................................................................................................................................ 76
Service Port (RS-232/USB).......................................................................................................... 76
Protocols ................................................................................................................................................ 76
Modbus RTU Slave ...................................................................................................................... 76
Data Protocol 4730 ...................................................................................................................... 79
CHAPTER 12. EVENT LOGGER................................................................................................ 84
GetEventLog Software ........................................................................................................................... 84
Installing GetEventLog ................................................................................................................. 84
Starting GetEventLog................................................................................................................... 84
Resetting the Event Logger.......................................................................................................... 85
CHAPTER 13. TECHNICAL DATA ............................................................................................. 86
CHAPTER 14. ACCURACY....................................................................................................... 88
APPENDIX A. COMMON .......................................................................................................... 89
Alarm Classes ........................................................................................................................................ 89
Conversion Factors and Charts ............................................................................................................. 90
Conversion Factors: Temperature ............................................................................................... 90
Conversion Factors: Pressure ..................................................................................................... 90
Conversion Chart: Wire Size........................................................................................................ 90
APPENDIX B. FRONT CUSTOMIZATION .................................................................................... 91
APPENDIX C. TROUBLESHOOTING .......................................................................................... 92
APPENDIX D. LIST OF PARAMETERS ....................................................................................... 95
APPENDIX E. SERVICE OPTIONS........................................................................................... 101
Product Service Options....................................................................................................................... 101
Returning Equipment For Repair.......................................................................................................... 101
Packing a Control....................................................................................................................... 102
Return Authorization Number RAN............................................................................................ 102
Replacement Parts............................................................................................................................... 102
How To Contact Woodward ................................................................................................................. 103
Engineering Services ........................................................................................................................... 104
Technical Assistance ........................................................................................................................... 105

Manual 37441C DTSC-50 - ATS Controller
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Illustrations and Tables
Illustrations
Figure 1-2: Functional overview................................................................................................................................................. 8
Figure 4-1: Housing - panel cut-out.......................................................................................................................................... 12
Figure 5-1: Wiring diagram – DTSC-50 ................................................................................................................................... 14
Figure 6-1: DTSC-50 back view - terminal arrangement .......................................................................................................... 15
Figure 6-2: Power supply.......................................................................................................................................................... 16
Figure 6-3: Voltage measuring - generator 3Ph 4W ................................................................................................................. 18
Figure 6-4: Voltage measuring - generator 3Ph 3W ................................................................................................................. 18
Figure 6-5: Voltage measuring - generator 1Ph 3W ................................................................................................................. 18
Figure 6-6: Voltage measuring - generator 1Ph 2W, phase-neutral .......................................................................................... 19
Figure 6-7: Voltage measuring - generator 1Ph 2W, phase-phase............................................................................................ 19
Figure 6-8: Voltage measuring - mains 3Ph 4W....................................................................................................................... 20
Figure 6-9: Voltage measuring - mains 3Ph 3W....................................................................................................................... 20
Figure 6-10: Voltage measuring - mains 1Ph 3W..................................................................................................................... 20
Figure 6-11: Voltage measuring - mains 1Ph 2W..................................................................................................................... 21
Figure 6-12: Discrete inputs - alarm/control input - positive signal ........................................................................................ 22
Figure 6-13: Discrete inputs - alarm/control input - negative signal........................................................................................ 23
Figure 6-14: Discrete inputs - alarm/control inputs - operation logic....................................................................................... 23
Figure 6-15: Relay outputs ....................................................................................................................................................... 24
Figure 6-16: Service port connector (RJ-45) ............................................................................................................................ 25
Figure 6-17: DPC-USB wiring - schematic .............................................................................................................................. 25
Figure 6-18: DPC-RS-232 wiring - schematic.......................................................................................................................... 26
Figure 7-1: Front panel and display.......................................................................................................................................... 27
Figure 7-2: 6 digit 7 segment LED display............................................................................................................................... 29
Figure 10-1: Voltage/frequency hysteresis................................................................................................................................ 64
Figure 11-1: Modbus - visualization configurations................................................................................................................. 78
Figure 12-1: GetEventLog - interface configuration................................................................................................................. 84
Figure 12-2: GetEventLog - event logger content..................................................................................................................... 85
Figure 14-4: Paper strip ............................................................................................................................................................ 91
Tables
Table 1-1: Manual - overview..................................................................................................................................................... 7
Table 4-1: Housing - panel cut-out ........................................................................................................................................... 12
Table 6-1: Power supply - terminal assignment ........................................................................................................................ 16
Table 6-2: Voltage measuring principles .................................................................................................................................. 17
Table 6-3: Voltage measuring - terminal assignment - generator voltage................................................................................. 19
Table 6-4: Voltage measuring - terminal assignment - mains voltage ...................................................................................... 21
Table 6-5: Discrete input - terminal assignment - alarm/control input - positive signal ........................................................... 22
Table 6-6: Discrete input - terminal assignment - alarm/control inputs - negative signal ......................................................... 23
Table 6-7: Relay outputs - terminal assignment, part 1............................................................................................................. 24
Table 7-1: Display - default operating value............................................................................................................................. 30
Table 7-2: Display of operating values ..................................................................................................................................... 32
Table 7-3: Alarm classes........................................................................................................................................................... 33
Table 7-4: Alarm messages ....................................................................................................................................................... 34
Table 7-5: Configuration displays............................................................................................................................................. 37
Table 7-6: Display hierarchy..................................................................................................................................................... 37
Table 8-1: Functional description - Overview .......................................................................................................................... 38
Table 10-1: Relay outputs - list of configurable parameters ..................................................................................................... 70
Table 11-1: Modbus - address range block read ....................................................................................................................... 77
Table 12-1: Event logger - operation states .............................................................................................................................. 85
Table 14-1: Conversion factor: temperature ............................................................................................................................. 90
Table 14-2: Conversion factor: pressure................................................................................................................................... 90
Table 14-3: Conversion chart: wire size ................................................................................................................................... 90

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 7/106
Chapter 1.
General Information
Related Documents
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Type
English
German
DTSC-50
DTSC-50 – Manual
this manual 
37441
-
Additional Manuals
LeoPC1 – User Manual
37146
GR37146
PC program for configuration, parameter visualization, remote control, data logging, language upload, alarm and user management,
and event recorder management. This manual describes the use of LeoPC1 software.
LeoPC1 – Engineering Manual
37164
GR37164
PC program for configuration, parameter visualization, remote control, data logging, language upload, alarm and user management,
and event recorder management. This manual describes the programming of LeoPC1 software.
Table 1-1: Manual - overview

Manual 37441C DTSC-50 - ATS Controller
Page 8/106 © Woodward
Overview
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Figure 1-2: Functional overview

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 9/106
The DTSC-50 generator set controller provides the following functions:
•Genset control
•Engine and generator protection
•Engine data measurement -
oincluding battery voltage, service hours, etc.
•Generator voltage measurement
•Alarm display with circuit breaker trip and engine shutdown
•AMF (automatic mains failure) standby genset control with automatic engine start on a mains failure de-
tection and open transition breaker control
•Password protected configuration
Intended Use The control unit must only be operated as described in this manual. The prerequisite for a proper
and safe operation of the product is correct transportation, storage, and installation as well as careful operation
and maintenance.
NOTE
This manual has been developed for a unit fitted with all available options. Inputs/outputs, functions,
configuration screens and other details described, which do not exist on your unit may be ignored.
The present manual has been prepared to enable the installation and commissioning of the unit. Be-
cause of the large variety of parameter settings, it is not possible to cover every possible combination.
The manual is therefore only a guide. In case of incorrect entries or a total loss of functions, the de-
fault settings can be taken from the enclosed list of parameters.

Manual 37441C DTSC-50 - ATS Controller
Page 10/106 © Woodward
Chapter 2.
DTSC-50 Overview
NOTE
Some parameters of the DTSC-50 can only be configured using the Direct Configuration Cable DPC
(P/N 5417-557) and a notebook/PC with the software LeoPC1. These parameters are indicated with an L
in the parameter description under Parameters starting from page 52 and can not be configured at the
unit directly.
The configuration with LeoPC1 via the DPC is described under Configuration Using the PC on page 50.
The DPC is not part of the DTSC-50 shipment and sold separately (P/N 5417-557).
IMPORTANT NOTE ABOUT COUNTERS
The counters for
•Operation hours
•Maintenance Interval
•Number of starts
can be recalibrated with LeoPC1 and the configuration files belonging to the unit. If 3rd party users are
not allowed to change these values, you can easily remove the parameters which enable changing the
counters by editing the LeoPC1 configuration files as described under Editing the Configuration File
on page 51.
The counter for
•Maintenance Interval
can also be recalibrated using the front panel. You may prevent the user from recalibrating this param-
eter by setting a HMI password as described under Codes on page 74.

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 11/106
Chapter 3.
Electrostatic Discharge Awareness
All electronic equipment is static-sensitive, some components more than others. To protect these components
from static damage, you must take special precautions to minimize or eliminate electrostatic discharges.
Follow these precautions when working with or near the control.
1. Before performing maintenance on the electronic control, discharge the static electricity on your body to
ground by touching and holding a grounded metal object (pipes, cabinets, equipment, etc.).
2. Avoid the build-up of static electricity on your body by not wearing clothing made of synthetic materials.
Wear cotton or cotton-blend materials as much as possible because these do not store static electric charg-
es as much as synthetics.
3. Keep plastic, vinyl, and Styrofoam materials (such as plastic or Styrofoam cups, cup holders, cigarette
packages, cellophane wrappers, vinyl books or folders, plastic bottles, and plastic ash trays) away from the
control, the modules, and the work area as much as possible.
4. Opening the control cover may void the unit warranty.
Do not remove the Printed Circuit Board (PCB) from the control cabinet unless absolutely necessary. If
you must remove the PCB from the control cabinet, follow these precautions:
•Ensure that the device is completely de-energized (all connectors must be disconnected).
•Do not touch any part of the PCB except the edges.
•Do not touch the electrical conductors, connectors, or components with conductive devices with your
hands.
•When replacing a PCB, keep the new PCB in the protective antistatic bag it comes in until you are
ready to install it. Immediately after removing the old PCB from the control cabinet, place it in the pro-
tective antistatic bag.
CAUTION
To prevent damage to electronic components caused by improper handling, read and observe the pre-
cautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Print-
ed Circuit Boards, and Modules.
NOTE
The unit is capable to withstand an electrostatic powder coating process with a voltage of up to 85 kV
and a current of up to 40 µA.

Manual 37441C DTSC-50 - ATS Controller
Page 12/106 © Woodward
Chapter 4.
Housing
Dimensions / Panel Cut-Out
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
40
136158
136
158
Figure 4-1: Housing - panel cut-out
Description
Dimension
Tolerance
Height
Total
158 mm
---
Panel cut-out
138 mm
+ 1.0 mm
Housing dimension
136 mm
Width
Total
158 mm
---
Panel cut-out
138 mm
+ 1.0 mm
Housing dimension
136 mm
Depth
Total
40 mm
---
Table 4-1: Housing - panel cut-out

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 13/106
Installation
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
For installation into a door panel, proceed as follows:
1.
Panel cut-out
Cut out the panel according to the dimensions in Figure 4-1.
2.
Remove terminals
Loosen the wire connection terminal screws on the back of the unit and
remove the wire connection terminal strips if required (1).
1
3.
Loosen clamping screws
Loosen the four clamping screws (1) until they are almost flush with the
clamp inserts and tilt the clamp inserts down by 45° (2) to remove them
from the housing. Do not completely remove the screws from the clamp
inserts.
12
4.
Insert unit into cut-out
Insert the unit into the panel cut-out. Verify that the unit fits correctly in
the cut-out. If the panel cut-out is not big enough, enlarge it accordingly.
Ensure that the gasket is placed properly if used. Ensure that the paper
strip is not pinched between gasket and panel to maintain isolation.
5.
Attach clamp inserts
Re-install the clamp inserts by tilting the insert to a 45° angle (1). Insert
the nose of the insert into the slot on the side of the housing. Raise the
clamp insert so that it is parallel to the control panel (2).
1
2
6.
Tighten clamping screws
Tighten the clamping screws (1) until the control unit is secured to the
control panel (2). Over tightening of these screws may result in the clamp
inserts or the housing breaking. Do not exceed the recommended tighten-
ing torque of 0.1 Nm.
1
2
7.
Reattach terminals
Reattach the wire connection terminal strips (1) and secure them with the
side screws.
1
Note: If the gasket is damaged, it needs to be replaced. Use only the original gasket kit (P/N 3050-1057) for re-
placement.

Manual 37441C DTSC-50 - ATS Controller
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Chapter 5.
Wiring Diagrams
0102212223242526272807060515161718192008092930
3132333435361011121314030437383940
The socket for the PC configuration
is situated on the back of the item.
This is were the DPC cable has to
be plugged in.
Discrete input [DI 01] isolated
Lock in manual mode
Discrete input [DI 02] isolated
Lock in auto mode
Discrete input [DI 03] isolated
Remote start
Discrete input [DI 04] isolated
Reply MCB / free configurable
Discrete input [DI 05] isolated
Reply GCB / free configurable
Common (terminals 15 to 20)
[DI 01]
[DI 02]
[DI 03]
[DI 04]
[DI 05]
Subject to techn ical modifications.
DTSC-50
DTSC-50 Wiring Diagram | Rev. NEW
Mains voltage L3
Not connected
Mains voltage L2
Mains voltage L1
Mains voltage N
Not connected
Not connected
Not connected
Relay [R 01] isolated
MCB open
Relay [R 02] isolated
Engine start relay
Generator voltage L3
Not connected
Generator voltage L2
Generator voltage L1
Generator voltage N
Not connected
Not connected
Not connected
Relay [R 03]
Close GCB
Relay [R 04]
Free configurable
Relay [R 05]
Free configurable
Relay [R 06]
Free configurable
Common (terminals 10 to 14)
+
-
Figure 5-1: Wiring diagram – DTSC-50

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 15/106
Chapter 6.
Connections
NOTE
The wire sizes in the following chapter are indicated in square millimeters. Please refer to Conversion
Chart: Wire Size on page 90 to convert the sizes to AWG.
Terminal Arrangement
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
20 19 12
21 22 403935 36
upper terminal strip
lower terminal strip
configuration plug
Figure 6-1: DTSC-50 back view - terminal arrangement

Manual 37441C DTSC-50 - ATS Controller
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Power supply
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Power supply
21
0 Vdc
6.5 to 32.0 Vdc
6.5 to 32.0 Vdc
Figure 6-2: Power supply
Terminal
Description
Amax
1
0 Vdc reference potential
2.5 mm²
2
6.5 to 32.0 Vdc
2.5 mm²
Table 6-1: Power supply - terminal assignment
For a proper operation of the device, a minimum initial voltage of 10.5 Vdc is necessary when switching on the
DTSC. After this, a continuous operating voltage between 6.5 and 32 Vdc is possible to operate the DTSC-50
safely. The control unit is capable of handling voltage drops to 0 V for a maximum of 10 ms.
CAUTION
Ensure that the engine will be shut down by an external device in case the power supply of the
DTSC-50 control unit fails. Failure to do so may result in damages to the equipment.

Manual 37441C DTSC-50 - ATS Controller
© Woodward Page 17/106
Voltage Measuring
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
The DTSC-50 allows the use of different voltage measuring methods for generator and mains voltage depending
on the model. These are described in the following text.
Measuring
method
Description
3Ph 4W
Measurement is performed phase-
neutral (WYE connected system). Phase voltages and
neutral conductor must be connected for proper calculation. The measurement, display
and pro
tection are adjusted according to the rules for WYE or delta connected systems.
Monitoring refers to the following voltages:
•VL12, VL23, and VL31, or
•VL1N, VL2N, and VL3N.
3Ph 3W
Measurement is performed phase-phase (delta connected system). Phase voltages must
be connected for proper calculation. The measurement, display and protection are ad-
justed according to the rules for delta connected systems. Monitoring refers to the fol-
lowing voltages:
•VL12, VL23, VL31.
1Ph 2W
Measurement is performed for single-phase systems. The measurement, display and
protection are adjusted according to the rules for single-phase systems. Monitoring re-
fers to the following voltages:
•VL1N.
1Ph 3W
Measurement is performed for single-phase systems. The measurement, display and
protection are adjusted according to the rules for single-phase systems. Monitoring re-
fers to the following voltages:
•VL1N, VL3N.
Table 6-2: Voltage measuring principles
The above described voltage measuring methods are shown with appropriate wiring examples for the different
models for generator and mains voltage measuring in Figure 6-3 to Figure 6-11.
NOTE
LeoPC1 and a DPC cable (Revision B, P/N 5417-557) are required to configure the voltage measuring
methods “1Ph2W”,“1Ph3W, “3Ph3W” and “3Ph4W”

Manual 37441C DTSC-50 - ATS Controller
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Voltage Measuring: Generator
Voltage Measuring: Generator 3Ph 4W
L1
L2
L3
N
GCB
29 31 33 35
L3 L2 L1 N
Generator voltage 3Ph 4W
G
Figure 6-3: Voltage measuring - generator 3Ph 4W
Voltage Measuring: Generator 3Ph 3W
G
L1
L2
L3
GCB
29 31 33 35
L3 L2 L1 N
Generator voltage 3Ph 3W
Figure 6-4: Voltage measuring - generator 3Ph 3W
Voltage Measuring: Generator 1Ph 3W
L1
L3
N
GCB
G
29 31 33 35
L3 L2 L1 N
Generator voltage 1Ph 3W
Figure 6-5: Voltage measuring - generator 1Ph 3W

Manual 37441C DTSC-50 - ATS Controller
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Voltage Measuring: Generator 1Ph 2W
Phase-Neutral Voltage Measuring
L1
N
GCB
29 31 33 35
L3 L2 L1 N
Generator voltage 1Ph 2W
G
L1
N
GCB
29 31 33 35
L3 L2 L1 N
Generator voltage 1Ph 2W
G
Figure 6-6: Voltage measuring - generator 1Ph 2W, phase-neutral
Phase-Phase Voltage Measuring
It is also possible to perform a phase-phase voltage measuring. The units is intended for a phase-neutral measur-
ing as described above, but may also be used for phase-phase voltage measuring. In this case, phase L2 must be
connected to the N terminal of the DTSC-50 and the Generator rated voltage (Parameter 11) must be configured
to the phase-phase voltage.
33 35
L1 N
Generator voltage 1Ph 2W
3129
L3 L2
L1
L2
GCB
G
Figure 6-7: Voltage measuring - generator 1Ph 2W, phase-phase
Terminal
Description
Amax
29 Generator voltage - phase L3 480 Vac 2.5 mm²
31 Generator voltage - phase L2 480 Vac 2.5 mm²
33 Generator voltage - phase L1 480 Vac 2.5 mm²
35 Generator voltage - phase N 480 Vac 2.5 mm²
Table 6-3: Voltage measuring - terminal assignment - generator voltage
NOTE
If you select to perform a phase-phase voltage measuring, the display is still indicating a phase-neutral
voltage since the voltage is measured between terminal 33 (L1) and 35 (N).
However, if the Generator rated voltage (Parameter 11) is configured correctly, the displayed value is
the correct phase-phase voltage value.

Manual 37441C DTSC-50 - ATS Controller
Page 20/106 © Woodward
Voltage Measuring: Mains
Voltage Measuring: Mains 3Ph 4W
21 23 25 27
L3 L2 L1 N
Mains voltage 3Ph 4W
MCB
L1
L2
L3
N
Figure 6-8: Voltage measuring - mains 3Ph 4W
Voltage Measuring: Mains 3Ph 3W
21 23 25 27
L3 L2 L1 N
Mains voltage 3Ph 3W
MCB
L1
L2
L3
Figure 6-9: Voltage measuring - mains 3Ph 3W
Voltage Measuring: Mains 1Ph 3W
21 23 25 27
L3 L2 L1 N
Mains voltage 1Ph 3W
MCB
L1
L3
N
Figure 6-10: Voltage measuring - mains 1Ph 3W