Woodward MFR 11 User manual

37140A
Manual
Version 3.xxxx
Manual 37140A
MFR 11
Protection Relay

Manual 37140A MFR 11 - Protection Relay
Page 2/80 © 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OUT-OF-DATE PUBLICATION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 37140A MFR 11 - Protection Relay
© Woodward Page 3/80
Revision History
Rev. Date Editor Changes
NEW 03-03-26 Tr Release
A 07-07-18 TP Update to reflect new format, minor corrections, and language revision
INACTIVE – FOR REFERENCE ONLY
The information in this publication is no longer current, and may not reflect changes or safety issues
that have occurred since the publication was originally released.
Refer to the MFR 11 Packages manual 37351 for more recent information about the MFR 11 unit.
Contents
CHAPTER 1. GENERAL INFORMATION.........................................................................................7
Introduction .............................................................................................................................................7
Measurement Value Logging..................................................................................................................8
Extent of Functions .................................................................................................................................9
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS...........................................................10
CHAPTER 3. INSTALLATION .....................................................................................................11
Wiring Diagram Optional Models 100 Vac and 400 Vac ......................................................................11
Wiring Diagram Optional Models 690 Vac............................................................................................12
Power Supply (Standard)......................................................................................................................13
Wide Range Power Supply (Option N) .................................................................................................13
Measuring Inputs...................................................................................................................................14
Voltage........................................................................................................................................14
Discrete Inputs ......................................................................................................................................16
Outputs..................................................................................................................................................16
Relay Outputs (Standard / Option R)..........................................................................................16
Analog Outputs (Options A1 to A8) ............................................................................................17
Interface (Options SU/SB/SF)...............................................................................................................18
CAN Bus Shielding .....................................................................................................................18
CAN Bus Topology .....................................................................................................................19
DPC - Direct Configuration Interface ..........................................................................................20
CHAPTER 4. FUNCTIONAL DESCRIPTION ..................................................................................21
Control Inputs........................................................................................................................................21
Control Outputs .....................................................................................................................................22
Alarms ...................................................................................................................................................23
Alarm Messages .........................................................................................................................23
Alarm Acknowledgement............................................................................................................23
CHAPTER 5. DISPLAY AND OPERATING ELEMENTS...................................................................24
Brief Description of LEDs and Push Buttons ........................................................................................24
LEDs......................................................................................................................................................25
Push Buttons.........................................................................................................................................26
LC Display.............................................................................................................................................27
Display in Automatic Mode (First Line of the Display: Measured Values)..................................27
Display in Automatic Mode (Second Line of the Display: Measured Values) ............................27
Display in Automatic Mode (Second Line of the Display: Alarm Indication)...............................28

Manual 37140A MFR 11 - Protection Relay
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CHAPTER 6. CONFIGURATION ................................................................................................. 29
Basic Data ............................................................................................................................................ 30
Configuration Access............................................................................................................................ 30
Sealing (Until Version 1.9xx)...................................................................................................... 30
Password (Starting with Version 2.0xx / 3.0xx).......................................................................... 32
Change Passwords (Starting with Version 2.0xx / 3.0xx) .......................................................... 33
Direct Configuration (from Version 3.0xx) ............................................................................................ 34
Measurement........................................................................................................................................ 35
Voltage Measurement ................................................................................................................ 35
Potential Transformer Configuration .......................................................................................... 35
Rated Voltage / Rated Frequency (Option YC).......................................................................... 36
Control Functions ................................................................................................................................. 37
Synchronization (Option YC)...................................................................................................... 37
Type of Monitoring................................................................................................................................ 39
Protection.............................................................................................................................................. 40
Overvoltage Monitoring (Option U) ............................................................................................ 40
Undervoltage Monitoring (Option U) .......................................................................................... 41
Zero Voltage Monitoring (Option UN)......................................................................................... 42
Voltage Asymmetry Monitoring (Option U)................................................................................. 43
Overfrequency Monitoring (Option U) ........................................................................................ 44
Underfrequency Monitoring (Option U) ...................................................................................... 45
Vector / Phase Shift Monitoring (Option V) ................................................................................ 46
df/dt (ROCOF) Monitoring (Option D) ........................................................................................ 47
Relay Configuration .............................................................................................................................. 48
Auto Acknowledgement of the Relays ....................................................................................... 48
Auto Acknowledgement of Messages........................................................................................ 49
Changing the Relay Assignment (Relay Manager; Standard / Option R).................................. 50
Analog Outputs (Options A1/2/3/4/6/8) ................................................................................................ 52
Interface (Options SU/SB) .................................................................................................................... 54
Screens for Protocol DK3964 (Option SU) ................................................................................ 54
Screens for Protocol Profibus DP Slave (Option SU) ................................................................ 54
Screens for Protocol Modbus RTU Slave (Option SU/SB) ........................................................ 54
Screens for Protocol CAN Bus (Options SU/SB) ....................................................................... 55
General Screens for All Interfaces (Option SB) ......................................................................... 56
CHAPTER 7. COMMISSIONING.................................................................................................. 57
APPENDIX A. DIMENSIONS ...................................................................................................... 59
APPENDIX B. TECHNICAL DATA .............................................................................................. 60
APPENDIX C. MEASURED QUANTITIES AND ACCURACY............................................................ 62
APPENDIX D. INTERFACE TELEGRAM....................................................................................... 63
Communication Interface Addresses ................................................................................................... 63
Description of the Data Format............................................................................................................. 65
Examples.................................................................................................................................... 65
Bit Change at Tripping of a Watchdog Function ........................................................................ 65
Framework Data for the Interfaces....................................................................................................... 66
Framework Data to Procedure 3964 (TTY, RS-232, RS-485) ................................................... 66
Framework Data for Hardware Handshaking RTS/CTS (RS-232, RS-422).............................. 66
Framework Data for Modbus RTU Slave ................................................................................... 66
Framework Data for CAN Bus.................................................................................................... 67
Framework Data for Profibus DP ............................................................................................... 68
APPENDIX E. LIST OF PARAMETERS ........................................................................................ 69

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 5/80
APPENDIX F. SERVICE OPTIONS ..............................................................................................75
Product Service Options .......................................................................................................................75
Returning Equipment for Repair ...........................................................................................................75
Packing a Control .......................................................................................................................76
Return Authorization Number RAN ............................................................................................76
Replacement Parts................................................................................................................................76
How to Contact Woodward ...................................................................................................................77
Engineering Services ............................................................................................................................78
Technical Assistance ............................................................................................................................79

Manual 37140A MFR 11 - Protection Relay
Page 6/80 © Woodward
Illustrations and Tables
Illustrations
Figure 3-1: Wiring diagram optional models 100 Vac and 400 Vac........................................................................................11
Figure 3-2: Wiring diagram optional models 690 Vac.............................................................................................................12
Figure 3-3: Power supply.........................................................................................................................................................13
Figure 3-4: Wide range power supply......................................................................................................................................13
Figure 3-5: Measuring inputs - Voltage 100/400 V versions...................................................................................................14
Figure 3-6: Measuring inputs - voltage, 690 V version ...........................................................................................................14
Figure 3-7: Measuring inputs – Synchronizing voltage...........................................................................................................15
Figure 3-8: Discrete inputs.......................................................................................................................................................16
Figure 3-9: Relay outputs ........................................................................................................................................................16
Figure 3-10: Analog outputs....................................................................................................................................................17
Figure 3-11: Interfaces.............................................................................................................................................................18
Figure 3-12: Interface - CAN bus shielding.............................................................................................................................18
Figure 3-13: Interfaces - CAN bus topology............................................................................................................................19
Figure 5-1: Front panel............................................................................................................................................................24
Figure 7-1: Dimensions............................................................................................................................................................59
Figure 7–2: Interface - Modbus connection.............................................................................................................................66
Figure 7-3: Interface, Profibus DP slave..................................................................................................................................68
Tables
Table 3-1: Conversion chart - wire size...................................................................................................................................13
Table 3-2: Maximum CAN bus length.....................................................................................................................................19
Table 4-1: Alarms....................................................................................................................................................................23
Table 5-1: Alarm messages......................................................................................................................................................28
Table 6-1: Release delay of the relays.....................................................................................................................................49
Table 6-2: Protective function output to relay .........................................................................................................................51
Table 6-3: Analog outputs, table of values..............................................................................................................................52
Table 7-1: Analog outputs, table of values..............................................................................................................................74

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 7/80
Chapter 1.
General Information
Introduction
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
The MFR 11 model is a generator or mains protection unit packaged into one compact device. Typical applica-
tions are generators and switchgear equipment that require independent protection architecture. Different options
offer additional functionality
The detailed model description for the MFR 11 reads as follows:
MFR1110-h0000B/
A
BDEF..Z
Options according to list of options.
These options can be found in the manual. Each chapter headline points out
if the described function is standard or has to be ordered optionally.
Mounting [B].. Flush-mounting
[M].. DIN-rail/rear panel mounting
Hardware variation
non-standard models; e.g. additional relays
Current transformer, secondary
[0] = not available
Voltage transformer/PTs, secondary
[0] = not available
[1] = 100 Vac
[4] = 400 Vac
[7] = 690 Vac
Type
Examples:
•MFR1110B/U(flush mounted, standard unit with 100 Vac PT inputs with Option U [over-/undervoltage,
voltage asymmetry, and over-/underfrequency monitoring, 3 relay outputs])
•MFR1140B/UVDRN (flush mounted, standard unit with 400 Vac PT inputs with the Options U/V/D/R/N
[over-/undervoltage, voltage asymmetry, and over-/underfrequency monitoring + phase/vector shift and df/dt
ROCOF protection, 8 relay outputs, wide-range power supply])

Manual 37140A MFR 11 - Protection Relay
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Measurement Value Logging
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Voltage
Voltage is displayed as three-phase r.m.s measurement of the phase-neutral and/or phase-phase voltages. Op-
tion YC utilizes single-phase r.m.s. measurement of the synchronizing voltage 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 60):
• 66 V/115 V.................... [1]
• 230 V/400 V.................... [4]
• 400 V/690 V.................... [7]
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.
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. 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 37140A MFR 11 - Protection Relay
© Woodward Page 9/80
Extent of Functions
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Depending on the model, the unit is equipped with the following functions
Function Option Package
MP NU VDEW G59 G59N SC SC+N
General functions
Additional freely configurable relay outputs (4 change-over contacts, 1 nor-
mally open contact) R
99
Additional freely configurable relay outputs (2 change-over contacts) Standard 9999999
1 ready for operation relay output (normally open contact) Standard 9999999
Discrete input for blocking of protective functions or remote acknowledgment Standard 9999999
Sealing function (software up to version 1.9xx) Standard 9999999
Password system (software starting from version 2.0xx) Standard 9999999
1 Analog outputs - 20/0/4 to +20 mA A1
1 Analog outputs - 10/0 to 10 V A2
3 Analog outputs - 20/0/4 to +20 mA A3
4 Analog outputs -10/0 to 10 V A4
6 Analog outputs -20/0/4 to +20 mA A6
8 Analog outputs -10/0 to 10 V A8
Interface, uni-directional SU
Interface, bi-directional SB
Interface, CAN bus incl. remote control SF
Wide-range power supply (90 to 265 Vac/dc) N 9
99
#= RS-485/MOD-Bus RTU Slave
Protective functions
Three-phase over-/undervoltage monitoring (2 limits) V>, V< U 99999
Zero voltage monitoring: dead bus start (close CB to dead busbar) V ≠0 UN
99
Voltage asymmetry monitoring VAS> U 99999
Two-phase over-/underfrequency monitoring (2 limits) f>, f< U 99999
Vector/phase shift monitoring dϕ/dt V
999
df/dt ROCOF monitoring df/dt D
99
Synch-check function (not available for 690 V versions) IE>, IE>> YC
99
Packages
MFR 11 with Options U 9
MFR 11 with Options U/N
9
MFR 11 with Options U/V
9
MFR 11 with Options U/V/D/R
9
MFR 11 with Options U/V/D/R/N
9
MFR 11 with Options UN/YC
9
MFR 11 with Options UN/YC/N
9
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.

Manual 37140A MFR 11 - Protection Relay
Page 10/80 © Woodward
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 37140A MFR 11 - Protection Relay
© Woodward Page 11/80
Chapter 3.
Installation
Wiring Diagram Optional Models 100 Vac and 400 Vac
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
StandardStandard Iv Yc
Measuring voltage L1
supervised system
Subject to technical modifications.
not measured
71578670
CB
72 70 71 72 1
Displacement voltage ue
via e-n-winding or
zero-point transformer
Blocking of watchdog function/
remote acknowledgement
0 Vdc
24 Vdc
Option N: 75..265 Vac + 90..300 Vdc
Synchronizing voltage L2
Synchronizing voltage L1
Synchronizing voltage L3
Measuring voltage
three-wire or
four-wire system
3
2 43
Measuring voltage L2
Measuring voltage L3
(Measuring voltage N)
Relay 4
Relay 5
Relay 6
Relay 8
(Option Yc + R: Synchro-Check)
Relay 7
+/- 10 V
Analog output 2
52
Possible combinations: A1/A2/A3/A4+S.., A6, A8, S..
+/- 10 V
MFR 11 (> version 3.0xx; 100/400 V model)
A1
Relay 2
Relay 1
Relay 3
(Option Yc: Synchro-Check)
Standard
Analog output 1
Common 1 + 2
2003-03-24 | MFR 11 Wiring Diagram r13ww-1303-ap.skf
1211109
50 51
0
13 161514
+/- 20 mA
+/- 20 mA
+/- 20 mA
+/- 10 V
+/- 10 V
+/- 20 mA
+/- 20 mA
+/- 10 V
+/- 10 V
+/- 10 V
+/- 10 V
+/- 20 mA
Interface
RS232, RS422, RS485
TTY, MOD bus slave
CAN bus, Profi bus DP
A6
Analog output 5
A2
A8 A4
A6 A3
A8
Analog output 3
Analog output 2
Analog output 1
Analog output 4
Analog output 3
Common 3 + 4
Analog output 4
Analog output 8
Analog output 7
Analog output 6
Analog output 5
Common 5 + 6
Common 7 + 8
S.. S..
A.., S..
Analog output 6
Alternatively
5553
0
5254 55 50 51 53 54
0
0
0
Alternatively
0
81 82 8381 82 83 84 85 86
0
00
0
X1 X2 X384 86 87 X4 X5
0
X6
Measuring voltage: 100 V AC or 400 V AC
The socket for the PC parameterization is situated
on the side of the unit. This is where the DPC
has to be plugged in.
R
27212019 22 26252423 28 32313029
Figure 3-1: Wiring diagram optional models 100 Vac and 400 Vac

Manual 37140A MFR 11 - Protection Relay
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Wiring Diagram Optional Models 690 Vac
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
StandardStandard
supervised system
Subject to technical modifications.
78
CB
0 Vdc
24 Vdc
Option N: 75..265 Vac + 90..300 Vdc
3
Relay 4
Relay 5
Relay 6
Relay 7
+/- 10 V
Analog output 2
52
Possible combinations: A1/A2/A3/A4+S.., A6, A8, S..
+/- 10 V
A1
Relay 2
Relay 1
Standard
Analog output 1
Common 1 + 2
2003-03-24 | MFR 11 Wiring Diagram r13ww-1303-ap.skf
1211109
50 51
0
13 161514
+/- 20 mA
+/- 20 mA
+/- 20 mA
+/- 10 V
+/- 10 V
+/- 20 mA
+/- 20 mA
+/- 10 V
+/- 10 V
+/- 10 V
+/- 10 V
+/- 20 mA
Interface
RS232, RS422, RS485
TTY, MOD bus slave
CAN bus, Profi bus DP
A6
Analog output 5
A2
A8 A4
A6 A3
A8
Analog output 3
Analog output 2
Analog output 1
Analog output 4
Analog output 3
Common 3 + 4
Analog output 4
Analog output 8
Analog output 7
Analog output 6
Analog output 5
Common 5 + 6
Common 7 + 8
S.. S..
A.., S..
Analog output 6
Alternatively
5553
0
5254 55 50 51 53 54
0
0
0
Alternatively
0
81 82 8381 82 83 84 85 86
0
00
0
X1 X2 X384 86 87 X4 X5
0
X6
Relay 8
65
Measuring voltage L3
(Measuring voltage N)
1
Measuring voltage
three-wire or
four-wire system
243
Measuring voltage L1
Measuring voltage L2
Relay 3
Measuring voltage: 690 V AC
The socket for the PC parameterization is situated
on the side of the unit. This is where the DPC
has to be plugged in.
MFR 1170 (> version 3.0xx; 690 V model)
R
27212019 22 26252423 28 32313029
Figure 3-2: Wiring diagram optional models 690 Vac

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 13/80
WARNING
All technical data and ratings indicated in this chapter are not definite! Only the values indicated under
Technical Data on page 60 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 (Standard)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
18 to 30 Vdc
7 8
0 V
18 to 30 Vdc
Standard
Power supply
Figure 3-3: Power supply
Terminal Description Amax
Standard power supply unit (Standard)
8 18 to 30 Vdc 2.5 mm²
7 0 V reference point 2.5 mm²
Wide Range Power Supply (Option N)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
7 8
Wide-range power supply
- / N
+ / L
Power supply
90 to 265 Vac/dc
Figure 3-4: Wide range power supply
Terminal Description Amax
from Version 3.xxx - Wide range power supply unit (Option N)
8 90 to 265 Vac/dc 2.5 mm²
7 0 V reference point 2.5 mm²
up to Version 1.xxx / 2.xxx - Wide range power supply unit (Option N)
17 90 to 265 Vac/dc 2.5 mm²
18 0 V reference point 2.5 mm²

Manual 37140A MFR 11 - Protection Relay
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Measuring Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Voltage
100/400 V version
Measuring
voltage
L3
L2
L1
N
G
1 2 3 4
L3
L2
L1
N
Figure 3-5: Measuring inputs - Voltage 100/400 V versions
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/transformer 2.5 mm²
690 V version
Measuring
voltage
L3
L2
L1
N
G
3 4 5 6
L3
L2
N
21
L1
Figure 3-6: Measuring inputs - voltage, 690 V version
Terminal Measurement Description Amax
1 Measuring voltage L1 2.5 mm²
2 -N/A- 2.5 mm²
3 Measuring voltage L2 2.5 mm²
4 -N/A- 2.5 mm²
5 Measuring voltage L3 2.5 mm²
6
690 V direct
Neutral point of the 3-phase system/transformer 2.5 mm²

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 15/80
Synchronizing Voltage (Option YC)
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.
NOTE
The Option YC is not available for 690 V-units.
L3
L2
L1
N
G
L3
L2
L1
Synchronizing
voltage
CB
70 71 72
a)
a) not measured
Figure 3-7: 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 37140A MFR 11 - Protection Relay
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Discrete Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
NOTE
The subsequent input "Blocking of protective functions / remote acknowledgement" does not exist in
the 690 V versions (refer to chapter Control Inputs on page 21.)
Signal device
Digital input
18..250 V (AC/DC)
AB
Figure 3-8: 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 (not in the 690 V-version) 2.5 mm²
Outputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Relay Outputs (Standard / Option R)
AB
Relay output
Relay output
external device
external device
external device
CDE
max. 250 V AC
Figure 3-9: Relay outputs
Description
Make-contact Amax
root closing
A B
9 10 Relay 1 2.5 mm²
31 32 Relay 8 Option R 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 Option R 2.5 mm²
22 23 24 Relay 5 Option R 2.5 mm²
25 26 27 Relay 6 Option R 2.5 mm²
28 29 30 Relay 7 Option R 2.5 mm²

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 17/80
Analog Outputs (Options A1 to A8)
Possible combination The analog outputs and the interface may be combined as follows:
Option ... S A1 - A4 A6 - A8
••-
simultaneous use of ... - - •
NOTE
All 20 mA outputs are metallically separated each; the 10 V outputs 1 to 4 and 5 to 8 are each isolated
separated once.
I
D
0 V
C
A
U
AB
0 V
A
Analog output
Analog output
Figure 3-10: Analog outputs
Description Amax
0 to 20 / 4 to 20 / -20 to +20 mA
IA0 V
A B
51 50 Analog output 1 Option A2/3/6 1.5 mm²
53 52 Analog output 2 Option A3/6 1.5 mm²
55 54 Analog output 3 Option A3/6 1.5 mm²
82 81 Analog output 4 (Option IK: No. 1) Option A6 1.5 mm²
84 83 Analog output 5 (Option IK: No. 2) Option A6 1.5 mm²
87 86 Analog output 6 (Option IK: No. 3) Option A6 1.5 mm²
0 to 10 / -10 to +10 V
UA0 V
C D
51 Analog output 1 Option A1/4/8 1.5 mm²
52 50 Analog output 2 Option A4/8 1.5 mm²
54 Analog output 3 Option A4/8 1.5 mm²
55 53 Analog output 4 Option A4/8 1.5 mm²
82 Analog output 5 (Option IK: No. 1) Option A8 1.5 mm²
83 81 Analog output 6 (Option IK: No. 2) Option A8 1.5 mm²
85 Analog output 7 (Option IK: No. 3) Option A8 1.5 mm²
86 84 Analog output 8 (Option IK: No. 4) Option A8 1.5 mm²

Manual 37140A MFR 11 - Protection Relay
Page 18/80 © Woodward
Interface (Options SU/SB/SF)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
ACA B D E B DC E A B C D E CEA B C D A B D E
GND
Interface RS422 interface Interface RS232 interface
A (non-inverted)
B (inverted)
GND
RTS
RxD
CTS
TxD
Interface RS485 interface MOD bus RTU slave
Z (inverted)
Y (non-inverted)
B (inverted)
A (non-inverted)
GND
Interface CAN bus Interface TTY interface The transmitter drives the current.
RxD +
RxD -
TxD +
TxD -
Termination
NC
GND
CAN-H
CAN-L
DA B C
Interface Profi bus DP
Screen
A-Line
GND
+5 V
E F
B-Line
RTS
Figure 3-11: Interfaces
Terminal Description
A(X1) B(X2) C(X3) D(X4) E(X5)
RxD RTS GND CTS TxD RS-232
A B
GND Z RS-422
GND B A
RS-485, Modbus RTU Slave
RxD- RxD+ NC TxD- TxD+ TTY (transmitter drives current)
GND CAN-H CAN-L CAN bus
A(X1) B(X2) C(X3) D(X4) E(X5) F (X6)
Screen +5 V GND A-Line B-Line RTS Profibus DP (the file
LEON00D9.GSD has to be used)
CAN Bus Shielding
Interface
CAN bus
CAN-L
CAN-H
GND
Shield
1 M Ohm
0.01 µ F
400 Vac
Figure 3-12: Interface - CAN bus shielding

Manual 37140A MFR 11 - Protection Relay
© Woodward Page 19/80
CAN Bus Topology
NOTE
Please note that the CAN bus must be terminated with an impedance which corresponds to the wave
impedance of the cable (e.g. 120 Ω). The CAN bus is terminated between CAN-H and CAN-L.
GND
CAN-L
CAN-H
GND GND
CAN-L
CAN-H
CAN-L
CAN-H
CAN-L
CAN-H
CAN bus
Termination
Termination
resistor
Note:
The termination has to be
performed with a resisitance,
which corresponds to the
impedance of the used cable
(e.g 120 Ohms)
CAN bus CAN bus
Termination
Termination
resistor
Figure 3-13: Interfaces - CAN bus topology
Possible CAN Bus Problems
If no data is transmitted on the CAN bus, check the following for common CAN bus communication problems:
- T structure bus is utilized (stub-end feeders or branch lines are not recommended)
- CAN-L and CAN-H are interchanged
- Not all devices on the bus are using identical Baud rates
- Terminating resistor(s) is/are missing
- Incorrect baud rate (too high) for length of CAN bus
Maximum CAN Bus Length
The maximum length of the communication bus wiring is dependent on the configured Baud rate. Refer to Table
3-2 for the maximum bus length (Source: CANopen; Holger Zeltwanger (Hrsg.); 2001 VDE VERLAG GMBH,
Berlin und Offenbach; ISBN 3-8007-2448-0).
Baud rate Max. length
1000 kbit/s 25 m
800 kbit/s 50 m
500 kbit/s 100 m
125 kbit/s 250 m
50 kbits/s 1000 m
20 kbit/s 2500 m
Table 3-2: Maximum CAN bus length
The maximum specified length for the communication bus wiring might not be achieved if poor quality wire is
utilized, there is high contact resistance, or other conditions exist. Reducing the baud rate may overcome these is-
sues.

Manual 37140A MFR 11 - Protection Relay
Page 20/80 © Woodward
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.