Woodward MFR 13 Series User manual

37353A
Manual
Version 3.1xxx
Manual 37353A
MFR 13 Packages
Protection Relay

Manual 37353A MFR 13 Packages - Protection Relay
Page 2/91 © Woodward
WARNING
Read this entire manual and all other publications pertaining to the work to be performed before install-
ing, operating, or servicing this equipment. Practice all plant and safety instructions and precautions.
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 (overtempera-
ture, or overpressure, where applicable) shutdown device(s), that operates totally independently 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 mechanical-hydraulic gov-
ernor(s) or electric control(s), the actuator(s), fuel control(s), the driving mechanism(s), the linkage(s),
or the controlled device(s) fail.
Any unauthorized modifications to or use of this equipment outside its specified mechanical, electrical,
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" within
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OUT-OF-DATE PUBLICATION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 37353A MFR 13 Packages - Protection Relay
© Woodward Page 3/91
Revision History
Rev. Date Editor Changes
NEW 06-03-02 TP Release based on 37142B
A 07-07-18 TP Zero voltage monitoring parameters corrected; description of inverse time overcurrent monitoring improved
Contents
CHAPTER 1. GENERAL INFORMATION.........................................................................................7
Introduction .............................................................................................................................................7
Measurement Value Logging ..................................................................................................................8
Package Functional Descriptions ...........................................................................................................9
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS...........................................................10
CHAPTER 3. INSTALLATION .....................................................................................................11
Wiring Diagram .....................................................................................................................................11
Power Supply (Packages GP /GPX /GPX-I /GPY-I /K08).................................................................12
Wide Range Power Supply (Package GPY-I-N)...................................................................................12
Measuring Inputs...................................................................................................................................13
Voltage........................................................................................................................................13
Current ........................................................................................................................................14
Discrete Inputs ......................................................................................................................................15
Outputs..................................................................................................................................................16
Relay Outputs (Standard / Packages GPX /GPX-I /GPY-I /GPY-I-N /K08) ...........................16
Pulse Output (Packages GPY-I /GPY-I-N) ................................................................................16
Analog Outputs (Packages GPY-I /GPY-I-N) ............................................................................17
Interface (Packages GPX-I /GPY-I /GPY-I-N /K08) ...........................................................................18
Modbus Interface ........................................................................................................................18
DPC - Direct Configuration Interface ..........................................................................................19
CHAPTER 4. FUNCTIONAL DESCRIPTION ..................................................................................20
Control Inputs........................................................................................................................................20
Control Outputs .....................................................................................................................................21
Direction of Power.................................................................................................................................22
Power Factor Definition.........................................................................................................................23
Alarms ...................................................................................................................................................25
Alarm Messages .........................................................................................................................25
Alarm Acknowledgement ............................................................................................................25
CHAPTER 5. DISPLAY AND OPERATING ELEMENTS...................................................................26
Brief Description of LEDs and Push Buttons ........................................................................................26
LEDs......................................................................................................................................................27
Push Buttons.........................................................................................................................................28
LC Display.............................................................................................................................................29
Display in Automatic Mode (First Line of the Display: Measured Values)..................................29
Display in Automatic Mode (Second Line of the Display: Measured Values) ............................29
Display in Automatic Mode (Second Line of the Display: Alarm Indication)...............................30

Manual 37353A MFR 13 Packages - Protection Relay
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CHAPTER 6. CONFIGURATION ................................................................................................. 31
Basic Data ............................................................................................................................................ 32
Configuration Access............................................................................................................................ 32
Password.................................................................................................................................... 32
Change Passwords .................................................................................................................... 33
Direct Configuration.............................................................................................................................. 34
Measurement........................................................................................................................................ 35
Voltage Measurement ................................................................................................................ 35
Potential Transformer Configuration .......................................................................................... 35
Current Measurement ................................................................................................................ 36
Rated Values (Packages GPX / GPX-I / GPY-I / GPY-I-N /K08) .............................................. 37
Power Measurement .................................................................................................................. 37
Control Functions ................................................................................................................................. 38
Synchronization (Packages GPX / GPX-I / GPY-I / GPY-I-N /K08).......................................... 38
Type of Monitoring................................................................................................................................ 40
Protection.............................................................................................................................................. 41
Overvoltage Monitoring .............................................................................................................. 41
Undervoltage Monitoring ............................................................................................................ 42
Zero Voltage Monitoring ............................................................................................................. 43
Voltage Asymmetry Monitoring .................................................................................................. 44
Overfrequency Monitoring.......................................................................................................... 45
Underfrequency Monitoring........................................................................................................ 46
Independent Time-Overcurrent Monitoring ................................................................................ 47
Inverse Time-Overcurrent Monitoring ........................................................................................ 49
Inverse Time-Overcurrent Monitoring with Voltage Restraint .................................................... 52
Ground Fault Monitoring, Calculated (Packages GP /K08) ...................................................... 54
Overload Monitoring ................................................................................................................... 55
Reverse/Reduced Power Monitoring ......................................................................................... 56
Unbalanced Load Monitoring ..................................................................................................... 57
Reactive Power Monitoring ........................................................................................................ 58
Relay Configuration .............................................................................................................................. 59
Auto Acknowledgement of the Relays ....................................................................................... 59
Auto Acknowledgement of Messages ........................................................................................ 60
Changing the Relay Assignment................................................................................................ 61
Pulse Output of the Positive Active Energy (Packages GPY-I /GPY-I-N) ........................................... 63
Analog Outputs (Packages GPY-I /GPY-I-N) ...................................................................................... 64
Interface (Packages GPX-I /GPY-I /GPY-I-N /K08)........................................................................... 66
Screens for Modbus RTU Slave Protocol .................................................................................. 66
General Interface Screens ......................................................................................................... 67
CHAPTER 7. COMMISSIONING.................................................................................................. 68
APPENDIX A. DIMENSIONS ...................................................................................................... 70
APPENDIX B. TECHNICAL DATA .............................................................................................. 71
APPENDIX C. MEASURED QUANTITIES AND ACCURACY............................................................ 73
APPENDIX D. INTERFACE TELEGRAM....................................................................................... 74
Communication Interface Addresses ................................................................................................... 74
Transmission Message .............................................................................................................. 74
Receive Message....................................................................................................................... 77
Description of the Data Format............................................................................................................. 78
Examples.................................................................................................................................... 79
Bit Change at Tripping of a Watchdog Function ........................................................................ 79
Framework Data for the Interfaces....................................................................................................... 79
Framework Data for Modbus RTU Slave ................................................................................... 79
APPENDIX E. LIST OF PARAMETERS ........................................................................................ 80

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 5/91
APPENDIX F. SERVICE OPTIONS ..............................................................................................86
Product Service Options .......................................................................................................................86
Returning Equipment for Repair ...........................................................................................................86
Packing a Control .......................................................................................................................87
Return Authorization Number RAN ............................................................................................87
Replacement Parts................................................................................................................................87
How to Contact Woodward ...................................................................................................................88
Engineering Services ............................................................................................................................89
Technical Assistance ............................................................................................................................90

Manual 37353A MFR 13 Packages - Protection Relay
Page 6/91 © Woodward
Illustrations and Tables
Illustrations
Figure 3-1: Wiring diagram.....................................................................................................................................................11
Figure 3-2: Power supply.........................................................................................................................................................12
Figure 3-3: Wide range power supply......................................................................................................................................12
Figure 3-4: Measuring inputs - voltages ..................................................................................................................................13
Figure 3-5: Measuring inputs - synchronizing voltage ............................................................................................................13
Figure 3-6: Measuring inputs - current ....................................................................................................................................14
Figure 3-7: Discrete inputs.......................................................................................................................................................15
Figure 3-8: Relay outputs ........................................................................................................................................................16
Figure 3-9: Pulse output...........................................................................................................................................................16
Figure 3-10: Analog outputs....................................................................................................................................................17
Figure 3-11: Interfaces.............................................................................................................................................................18
Figure 4-1: Direction of power ................................................................................................................................................22
Figure 5-1: Front panel............................................................................................................................................................26
Figure 6-1: Diagram for independent time-overcurrent monitoring ........................................................................................47
Figure 6-2: Inverse time-overcurrent - characteristic "normal inverse"...................................................................................50
Figure 6-3: Inverse time-overcurrent - characteristic "very inverse".......................................................................................51
Figure 6-4: Inverse time-overcurrent - characteristic "extremely inverse"..............................................................................51
Figure 6-5: Characteristic of the inverse time-overcurrent monitoring with voltage restraint (knee curve setting 20 %) .......52
Figure 7-1: Dimensions............................................................................................................................................................70
Figure 7-2: Interface, power factor scaling..............................................................................................................................78
Figure 7–3: Interface - Modbus connection.............................................................................................................................79
Tables
Table 3-1: Conversion chart - wire size...................................................................................................................................12
Table 4-1: Alarm messages......................................................................................................................................................25
Table 5-1: Alarm messages......................................................................................................................................................30
Table 6-1: Release delay of the relays.....................................................................................................................................60
Table 6-2: Protective function output to relay .........................................................................................................................62
Table 6-3: Analog outputs, table of values..............................................................................................................................64
Table 7-1: Analog outputs, table of values..............................................................................................................................85

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 7/91
Chapter 1.
General Information
Introduction
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The MFR 13 is an intelligent protection unit. The primary values are measured over integrated voltage and cur-
rent measuring inputs and converted into configurable limit values which are displayed and monitored. These
values can be monitored for exceeding/falling below the configured value.
The detailed model description for the MFR 13 reads as follows:
MFR1315 B/ ABDEF..Z
Packages according to the package list. These packages can be found in the manual. Each chapter headline points
out if the described function is standard or part of a package.
Mounting
[B].. Flush-mounting
Current transformer, secondary [1] = ../1 A
[5] = ../5 A
Voltage transformer/PTs, secondary
[1] = 100 Vac
[4] = 400 Vac
Type
Examples:
•MFR1341B/GPX (flush mounted, standard unit with 400 Vac PT and ../1 A CT inputs with 8 configurable re-
lays, true RMS busbar voltage measuring, and synch-check function)
•MFR1315B/ GPY-I-N (flush mounted, standard unit with 100 Vac PT and ../5 A CT inputs with
8 configurable relays, 3 analog outputs, pulse output, true RMS busbar voltage measuring synch-check func-
tion, RS-485 Modbus RTU Slave interface, and wide-range power supply)

Manual 37353A MFR 13 Packages - Protection Relay
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Measurement Value Logging
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Voltage
Voltage is displayed as three-phase r.m.s measurement of the phase-neutral and/or phase-phase voltages.
Packages GPX /GPX-I /GPY-I /GPY-I-N utilize single-phase r.m.s. measurement of the synchronizing volt-
age VL1-L2.
This device can be ordered with the following measuring voltage input ranges (rated voltages). Please indi-
cate the measuring voltage input required when ordering (refer to Technical Data on page 71):
• 66 V/115 V.................... [1]
• 230 V/400 V.................... [4]
Frequency
Frequency measurement is extracted from the digitally filtered measuring voltages. The frequency is meas-
ured three-phase if the measured voltage exceeds 15% of the nominal voltage. This ensures rapid and precise
measurement of the frequency. However the frequency is still measured correctly even if voltage is only ap-
plied to one phase.
Current
Three-phase measurement of the r.m.s. value.
- ../1 A...................................... [1]
- ../5 A...................................... [5]
Ground fault
The ground fault current is a calculation of the vectorial sum of the three phase currents (Package GP). This
measurement is suitable for line-to-ground monitoring in a solidly or resistance grounded mains (e.g. In
phase-to-phase low voltage mains). The line-to-ground current should at least represent 10% of the current
transformer rated current in order to ensure reliable operation.
Active power
The active load is measured though real time multiplication of either the three phase-to-neutral voltages and
the three-phase conductor currents or single-phase measurement of voltage V12 and the current I1.
Reactive power
The reactive power is calculated from the measured single-phase voltage V12 and the single-phase current I1.
Power factor
Power factor is calculated time difference between the digitally filtered voltage V12 and current I1. The power
factor is accurately measured for both clockwise and counter-clockwise phase sequences.
Active energy
Active energy combines a time measurement with the measured positive active load. The counter is incorpo-
rated in the non-volatile memory and only computes positive energy. The memory is updated every 3 minutes
with a resolution of 0.1 kWh. The unit automatically increases the engineering unit of measure when the
maximum value has been reached. This permits a measuring range up to 4,290 GWh. This counter is not
Physikalisch-Technische Bundesanstalt (PTB) calibrated.

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 9/91
Package Functional Descriptions
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Depending on the model, the unit is equipped with the following functions
Function Package
GP GPX GPX-I GPY-I GPY-I-N K08
General functions
1 ready for operation relay output (normally open contact) 999999
Additional freely configurable relay outputs (2 change-over contacts) 999999
1 synch-check relay output (normally open contact) 99999
Additional freely configurable relay outputs (4 change-over contacts) 99999
Discrete input for blocking of protective functions or remote acknowledgment 999999
3 Analog outputs - 20/0/4 to +20 mA 99
Open-collector pulse output for kWh 99
Interface, bi-directional 9#9#9#9#
Wide-range power supply (90 to 265 Vac/dc) 9
#= RS485/Modbus RTU Slave
Protective functions
Three phase over / under voltage monitoring (2 levels) V>, V< 999999
Zero voltage monitoring V ≠0 999999
Voltage asymmetry monitoring Vas> 999999
Three-phase over / under frequency monitoring (2 levels) f>, f< 999999
Overload monitoring P> 999999
Reverse/reduced power monitoring -P< 999999
Unbalanced load monitoring Ias> 999999
Reactive power monitoring (loss of excitation monitoring) -Q<, Q> 999999
Ground fault monitoring, calculated from IL1+IL2+IL3 IE>> 9
9
Independent time-overcurrent monitoring I>, I>>, I>>> 999999
Inverse time overcurrent monitoring (according to IEC) Ia> 999999
Inverse time-overcurrent monitoring with voltage restraint I>, I>> (V<) 999999
Synchro-Check 99999
Intended Use The unit must only be operated in the manner described by this manual. The prerequisite for a
proper and safe operation of the product is correct transportation, storage, and installation as well as careful op-
eration and maintenance.
NOTE
This manual has been developed for all available packages. 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. Due to
the large variety of parameter settings, it is not possible to cover every combination. The manual is
therefore only a guide. In case of incorrect entries or a total loss of functions, the default settings may
be taken from the list of parameters enclosed at the rear of this manual.

Manual 37353A MFR 13 Packages - Protection Relay
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Chapter 2.
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 doing 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 char-
ges as easily as synthetics.
3. Keep plastic, vinyl, and Styrofoam materials (such as plastic or Styrofoam cups, cigarette packages, cello-
phane wrappers, vinyl books or folders, plastic bottles, etc.) away from the control, modules, and 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 voltage-free (all connectors have to 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 or with
bare hands.
•When replacing a PCB, keep the new PCB in the plastic antistatic protective 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
antistatic protective 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, Printed
Circuit Boards, and Modules.

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 11/91
Chapter 3.
Installation
Wiring Diagram
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supervised system (variable)
s2 (l)
s1 (k)
s2 (l)
s1 (k)
s1 (k)
s2 (l)
Subject to technical modifications.
7 8
CB
40 41 4342 44 45
Measuring current L1
Measuring current L2
Measuring current L3
3/4
E (open collector)
C (kWh impulse)
Relay 2
Relay 1
(Ready for operation)
2006-02-16 | MFR 13 Wiring Diagram r13ww-0706-ap.skf
60 61 121110913 161514
Packages B/C/D/E
A/B/C/D: 24 Vdc
E: 90 to 265 Vac/dc
27212019 22 26252423 28 32313029
Relay 4
Relay 5
Relay 6
Relay 7
Packages B/C/D/E
Measuring voltage L1
715 6 70 72 1
Synchronizing voltage L2
Blocking of watchdog functions/
remote acknowledgement
Synchronizing voltage L1
(Synchronizing voltage L3)
Measuring voltage
three-wire or
four-wire system
2 43
(Measuring voltage N)
Measuring voltage L2
Measuring voltage L3
Relay 8
(B/C/D/E: Synch-check,
not configurable)
Relay 3
The socket for the PC configuration is situated
on the side of the unit. This is where the
DPC must be plugged in.
Packages:
A = Package GP
B = Package GPX
C = Package GPX-I,K08
D = Package GPY-I
E = Package GPY-I-N
MFR 13 (Multi Function Relay)
0 Vdc
Packages A/B/C/D/E
Interface
Bi-directional
[RS-485/Modbus RTU Slave]
X4
A (not inverted)
GND
B (inverted)
X3X2X1 X5
Packages C/D/EPackages D/E
D/E
Analog output 1
3/42/3
GND
50 51
Analog output 2
GND
52 53
Analog output 3
GND
54 55
Packages A/B/C/D/E
-20/0/4 to 20 mA
-20/0/4 to 20 mA
-20/0/4 to 20 mA
synchronizing system (fixed)
The synchronizing voltage must be connected three-
phase if the measuring voltage is connected three-
phase (N not connected). If the measuring voltage is
connected four-phase (L1-L2-L3-N), the synchronizing
voltage may be connected two-phase (L1-L2). L3 is
connected only for compensation and is not measured.
Synchronizing voltage
three-wire or
two-wire system
(refer to note above)
A (not inverted)
B (inverted)
Figure 3-1: Wiring diagram

Manual 37353A MFR 13 Packages - Protection Relay
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WARNING
All technical data and ratings indicated in this chapter are not definite! Only the values indicated under
Technical Data on page 71 are valid!
CAUTION
A circuit breaker must be located near to the unit and in a position easily accessible to the operator.
This must also bear a sign identifying it as an isolating switch for the unit.
NOTE
Inductive devices connected to the system (such as operating current coils, undervoltage tripping
units, or auxiliary/power contacts) must be connected to a suitable interference suppressor.
The following chart may be used to convert square millimeters [mm²] to AWG and vice versa:
AWG mm² AWG mm² AWG mm² AWG mm² AWG mm² AWG mm²
30 0.05 21 0.38 14 2.5 4 25 3/0 95 600MCM 300
28 0.08 20 0.5 12 4 2 35 4/0 120 750MCM 400
26 0.14 18 0.75 10 6 1 50 300MCM 150 1000MCM 500
24 0.25 17 1.0 8 10 1/0 55 350MCM 185
22 0.34 16 1.5 6 16 2/0 70 500MCM 240
Table 3-1: Conversion chart - wire size
Power Supply (Packages GP /GPX /GPX-I /GPY-I /K08)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
18 to 30 Vdc
7 8
0 V
18 to 30 Vdc
Standard
Power supply
Figure 3-2: Power supply
Terminal Description Amax
Standard power supply unit (Packages GP /GPX /GPX-I /GPY-I /K08)
8 18 to 30 Vdc 2.5 mm²
7 0 V reference point 2.5 mm²
Wide Range Power Supply (Package GPY-I-N)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
7 8
Wide-range power supply
- / N
+ / L
Power supply
90 to 265 Vac/dc
Figure 3-3: Wide range power supply
Terminal Description Amax
Wide range power supply unit (Package GPY-I-N)
8 90 to 265 Vac/dc 2.5 mm²
7 0 V reference point 2.5 mm²

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 13/91
Measuring Inputs
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Voltage
Measuring
voltage
L3
L2
L1
N
G
1 2 3 4
L3
L2
L1
N
Figure 3-4: Measuring inputs - voltages
Terminal Measurement Description Amax
1 Measuring voltage L1 2.5 mm²
2 Measuring voltage L2 2.5 mm²
3 Measuring voltage L3 2.5 mm²
4
400V direct
or trans-
former
../100V Neutral point of the 3-phase system/transf. 2.5 mm²
Synchronizing Voltage (Packages GPX /GPX-I /GPY-I /GPY-I-N /K08)
NOTE
Connection of the phase voltage L3 to terminal 72 (synchronizing voltage) is necessary if
•the generator voltage is connected as a three-wire-system and
•the power measurement of the generator power must be three-phase.
If the input for balancing the measuring system is not connected, minor inaccuracies will occur during
the three-phase power measurement. Functionality will not be affected if the voltage L3 is not con-
nected and the power measurement is configured as single-phase.
L3
L2
L1
N
G
L3
L2
L1
Synchronizing
voltage
CB
70 71 72
a)
a) not measured
Figure 3-5: Measuring inputs - synchronizing voltage
Terminal Measurement Description Amax
70 Synchronizing voltage L1 2.5 mm²
71 Synchronizing voltage L2 2.5 mm²
72
400V direct
or via transf.
../100V Synchronizing voltage L3 (not measured) 2.5 mm²

Manual 37353A MFR 13 Packages - Protection Relay
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Current
WARNING
Prior to disconnecting the current transformer connections or the connections of the transformer
which are located at the unit, ensure that the transformer is short-circuited.
NOTE
Grounding of the secondary of a current transformer must always be single-sided.
Detail:
Connection of the transformers
Generator
current
../1 A or ../5 A
L3
L2
L1
N
G
S2 S1
s2 (l)
s1 (k)
s2
L..
.. ..
s1
L.. s1 (k)
s2 (l)
s1 (k)
s2 (l) L2
s1 (k)
s2 (l)
4243 40414445
L1
L3
G
Figure 3-6: Measuring inputs - current
Terminal Measurement Description Amax
40 Generator current L1, transformer terminal s1 (k) 4 mm²
41 Generator current L1, transformer terminal s2 (l) 4 mm²
42 Generator current L2, transformer terminal s1 (k) 4 mm²
43 Generator current L2, transformer terminal s2 (l) 4 mm²
44 Generator current L3, transformer terminal s1 (k) 4 mm²
45
Transformer
../1 A or
../5 A
Generator current L3, transformer terminal s2 (l) 4 mm²

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 15/91
Discrete Inputs
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Signal device
Discrete input
AB
18 to 250 Vac/dc
Figure 3-7: Discrete inputs
Terminal Assigned
common Description (according to DIN 40 719 Part 3, 5.8.3) Amax
A B
5 6
Blocking of protective functions / remote acknowl-
edgement 2.5 mm²

Manual 37353A MFR 13 Packages - Protection Relay
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Outputs
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Relay Outputs (Standard / Packages GPX /GPX-I /GPY-I /GPY-I-N /K08)
AB
Relay output
Relay output
external device
external device
external device
CDE
max. 250 V AC
Figure 3-8: Relay outputs
Terminal Description
Make-contact Amax
Root closing
A B
9 10 Relay 1 2.5 mm²
31 32 Relay 8 Pkgs. GPX /GPX-I /GPY-I /GPY-I-N /K08 2.5 mm²
Change-over contact
closing Root opening
C D E
11 12 13 Relay 2 2.5 mm²
14 15 16 Relay 3 2.5 mm²
19 20 21 Relay 4 Pkgs. GPX /GPX-I /GPY-I /GPY-I-N /K08 2.5 mm²
22 23 24 Relay 5 Pkgs. GPX /GPX-I /GPY-I /GPY-I-N /K08 2.5 mm²
25 26 27 Relay 6 Pkgs. GPX /GPX-I /GPY-I /GPY-I-N /K08 2.5 mm²
28 29 30 Relay 7 Pkgs. GPX /GPX-I /GPY-I /GPY-I-N /K08 2.5 mm²
Pulse Output (Packages GPY-I /GPY-I-N)
B A
Pulse output
Open collector
+
-
24 V DC
R > 1 kOhm
V
Figure 3-9: Pulse output
Terminal Description Amax
A 60
B 61
Pulse output (Open Collector) 2.5 mm²

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 17/91
Analog Outputs (Packages GPY-I /GPY-I-N)
NOTE
All 20 mA outputs are isolated from each other.
AB
Analog output
0 V
I
A
Figure 3-10: Analog outputs
Terminal Description Amax
0 to 20 / 4 to 20
-20 to +20 mA
IA0 V
A B
51 50 Analog output 1 Packages GPY-I /GPY-I-N 1.5 mm²
53 52 Analog output 2 Packages GPY-I /GPY-I-N 1.5 mm²
55 54 Analog output 3 Packages GPY-I /GPY-I-N 1.5 mm²

Manual 37353A MFR 13 Packages - Protection Relay
Page 18/91 © Woodward
Interface (Packages GPX-I /GPY-I /GPY-I-N /K08)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Modbus Interface
X1 X2 X3 X4 X5
GND
B (inverted)
A (non-inverted)
B (inverted)
A (non-inverted)
Interface RS-485 Modbus RTU Slave
Figure 3-11: Interfaces
Terminal Description
(X1) (X2) (X3) (X4) (X5)
B A
GND B A RS-485, Modbus RTU Slave
NOTE
The Modbus interface connection may be performed at the terminals X1 through X3 or X3 through X5.
The terminals X1 and X4 as well as X2 and X5 are connected internally.

Manual 37353A MFR 13 Packages - Protection Relay
© Woodward Page 19/91
DPC - Direct Configuration Interface
NOTE
Configuration with the direct configuration cable DPC (P/N 5417-557) is possible. A laptop/PC, the DPC
cable, the program LeoPC1 version 3.1.1 or higher (included on CD Rom with unit), and the proper con-
figuration files are required. Please consult the online help installed when the program is installed for a
description of the LeoPC1 program and its setup.
WARNING
Only the DPC cable may be connected to the DPC interface. If other devices or lines are connected, the
unit may be destroyed. Especially the connection of live lines (like phone lines) will destroy the unit.
CAUTION
The connection cable delivered with the DPC must be used between DPC and the unit to ensure proper
functionality of the unit. An extension or utilization of different cable types for the connection between
the unit and DPC may result a malfunction of the unit. This may possibly result in damage to compo-
nents of the system. If an extension of the data connection line is required, only the serial cable (RS-
232) between DPC and laptop/PC may be extended. It is recommended to use an industry standard ca-
ble for this.
NOTE
If the parameter "Direct config." is enabled on the control, communication via the CAN bus interface on
terminals X1/X5 is disabled.
If the control unit detects that the engine is running (ignition speed exceeded), the direct configuration
port is disabled.

Manual 37353A MFR 13 Packages - Protection Relay
Page 20/91 © Woodward
Chapter 4.
Functional Description
Control Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Blocking of protective
functions / Remote ac-
knowledgement
Terminal 5/6
Energizing this discrete input disables various protective functions. This
functionality may be desired if the control is used for generator protection.
This keeps the control from recognizing fault conditions (i.e. undervoltage,
underfrequency) when the generator is not operating. If blocking of these
protective functions is not required, the discrete input should not be con-
nected to any potential source.
The following protective functions cannot be blocked via this discrete
input:
•Overvoltage monitoring
•Overfrequency monitoring
•Zero voltage monitoring
•Ground fault monitoring (calculated)
External acknowledgement
of the relays via the discrete
input "Blocking of protec-
tive functions / remote ac-
knowledgement"
External
Clearing ON
If the unit should not automatically reset the relays after the fault is no
longer present, the parameter "Auto clearing Relays" must first be
configured "OFF" (refer to "Auto Acknowledgement of the Relay" on
page 59).
OFF..............Alarms that cannot be blocked will not automatically reset af-
ter the fault condition is no longer present. Pressing the
"Clear" button resets the relays.
ON................All alarm messages are reset if terminals 5/6 ("Blocking of
protective functions / remote acknowledgement") are ener-
gized. Alarms that cannot be blocked are only reset after the
fault is no longer present.