Woodward MFD 11 Packages User manual

37351A
Manual
Version 3.1xxx
Manual 37351A
MFR 11 Packages
Protection Relay

Manual 37351A MFR 11 Packages - Protection Relay
Page 2/59 © 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OUT-OF-DATE PUBLICATION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 37351A MFR 11 Packages - Protection Relay
© Woodward Page 3/59
Revision History
Rev. Date Editor Changes
NEW 06-03-02 TP Release based on 37140A
A 07-07-17 TP Zero voltage monitoring parameters corrected; relay assignment for SC Packages updated
Contents
CHAPTER 1. GENERAL INFORMATION.........................................................................................6
Introduction .............................................................................................................................................6
Measurement Value Logging ..................................................................................................................7
Package Functional Descriptions ...........................................................................................................8
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS.............................................................9
CHAPTER 3. INSTALLATION .....................................................................................................10
Wiring Diagram 100/400 V Package Models (Standard)......................................................................10
Wiring Diagram 690 V Package Models (Packages MP /G59) ...........................................................11
Power Supply (Packages MP /VDEW /G59 /SC) ..............................................................................12
Wide Range Power Supply (Packages NU /G59N /SC+N) ................................................................12
Measuring Inputs...................................................................................................................................13
Voltage........................................................................................................................................13
Discrete Inputs ......................................................................................................................................15
Outputs..................................................................................................................................................15
Relay Outputs (Standard / Packages G59 &G59N) ..................................................................15
Interface ................................................................................................................................................16
DPC - Direct Configuration Interface ..........................................................................................16
CHAPTER 4. FUNCTIONAL DESCRIPTION ..................................................................................17
Control Inputs........................................................................................................................................17
Control Outputs .....................................................................................................................................18
Alarms ...................................................................................................................................................19
Alarm Messages .........................................................................................................................19
Alarm Acknowledgement ............................................................................................................19
CHAPTER 5. DISPLAY AND OPERATING ELEMENTS...................................................................20
Brief Description of LEDs and Push Buttons ........................................................................................20
LEDs......................................................................................................................................................21
Push Buttons.........................................................................................................................................22
LC Display.............................................................................................................................................23
Display in Automatic Mode (First Line of the Display: Measured Values)..................................23
Display in Automatic Mode (Second Line of the Display: Measured Values) ............................23
Display in Automatic Mode (Second Line of the Display: Alarm Indication)...............................24

Manual 37351A MFR 11 Packages - Protection Relay
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CHAPTER 6. CONFIGURATION ................................................................................................. 25
Basic Data ............................................................................................................................................ 26
Configuration Access............................................................................................................................ 26
Password.................................................................................................................................... 26
Change Passwords .................................................................................................................... 27
Direct Configuration.............................................................................................................................. 28
Measurement........................................................................................................................................ 29
Voltage Measurement ................................................................................................................ 29
Potential Transformer Configuration .......................................................................................... 29
Rated Values (Packages SC & SC+N) ...................................................................................... 30
Control Functions ................................................................................................................................. 31
Synchronization (Packages SC & SC+N) .................................................................................. 31
Type of Monitoring................................................................................................................................ 33
Protection.............................................................................................................................................. 34
Overvoltage Monitoring .............................................................................................................. 34
Undervoltage Monitoring ............................................................................................................ 35
Zero Voltage Monitoring (Packages SC & SC+N) ..................................................................... 36
Voltage Asymmetry Monitoring .................................................................................................. 37
Overfrequency Monitoring.......................................................................................................... 38
Underfrequency Monitoring........................................................................................................ 39
Vector / Phase Shift Monitoring (Packages VDEW / G59 / G59N) ............................................ 40
df/dt (ROCOF) Monitoring (Packages G59 & G59N) ................................................................. 41
Relay Configuration .............................................................................................................................. 42
Auto Acknowledgement of the Relays ....................................................................................... 42
Auto Acknowledgement of Messages ........................................................................................ 43
Changing the Relay Assignment (Standard / Packages G59 &G59N) ..................................... 44
CHAPTER 7. COMMISSIONING.................................................................................................. 46
APPENDIX A. DIMENSIONS ...................................................................................................... 47
APPENDIX B. TECHNICAL DATA .............................................................................................. 48
APPENDIX C. MEASURED QUANTITIES AND ACCURACY............................................................ 50
APPENDIX D. LIST OF PARAMETERS........................................................................................ 51
APPENDIX E. SERVICE OPTIONS ............................................................................................. 54
Product Service Options....................................................................................................................... 54
Returning Equipment for Repair........................................................................................................... 54
Packing a Control ....................................................................................................................... 55
Return Authorization Number RAN ............................................................................................ 55
Replacement Parts ............................................................................................................................... 55
How to Contact Woodward................................................................................................................... 56
Engineering Services............................................................................................................................ 57
Technical Assistance............................................................................................................................ 58

Manual 37351A MFR 11 Packages - Protection Relay
© Woodward Page 5/59
Illustrations and Tables
Illustrations
Figure 3-1: Wiring diagram 100/400 V package models.........................................................................................................10
Figure 3-2: Wiring diagram 690 V package models................................................................................................................11
Figure 3-3: Power supply.........................................................................................................................................................12
Figure 3-4: Wide range power supply......................................................................................................................................12
Figure 3-5: Measuring inputs - voltage 100/400 V versions....................................................................................................13
Figure 3-6: Measuring inputs - voltage, 690 V version............................................................................................................13
Figure 3-7: Measuring inputs - synchronizing voltage.............................................................................................................14
Figure 3-8: Discrete inputs.......................................................................................................................................................15
Figure 3-9: Relay outputs.........................................................................................................................................................15
Figure 5-1: Front panel ............................................................................................................................................................20
Figure 7-1: Dimensions............................................................................................................................................................47
Tables
Table 3-1: Conversion chart - wire size...................................................................................................................................12
Table 4-1: Alarm messages......................................................................................................................................................19
Table 5-1: Alarm messages......................................................................................................................................................24
Table 6-1: Release delay of the relays.....................................................................................................................................43
Table 6-2: Protective function output to relay .........................................................................................................................45

Manual 37351A MFR 11 Packages - Protection Relay
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Chapter 1.
General Information
Introduction
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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 pack-
ages offer additional functionality
The detailed model description for the MFR 11 reads as follows:
MFR1110 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
[0] = not available
Voltage transformer/PTs, secondary
[0] = not available
[1] = 100 Vac
[4] = 400 Vac
[7] = 690 Vac
Type
Examples:
•MFR1110B/MP (flush mounted, standard unit with 100 Vac PT inputs with MP Package [over-/undervoltage,
voltage asymmetry, and over-/underfrequency monitoring, 3 relay outputs])
•MFR1140B/G59N (flush mounted, standard unit with 400 Vac PT inputs with G59N Package [MP Package +
phase/vector shift and df/dt ROCOF monitoring, 8 relay outputs, wide-range power supply])

Manual 37351A MFR 11 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.
Package SC 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 48):
• 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.

Manual 37351A MFR 11 Packages - Protection Relay
Page 8/59 © Woodward
Package Functional Descriptions
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Depending on the model, the unit is equipped with the following functions
Function Package
MP NU VDEW G59 G59N SC SC+N
General functions
1 ready for operation relay output (normally open contact) 9999999
Additional freely configurable relay outputs (2 change-over contacts) 999999191
Additional freely configurable relay outputs (4 change-over contacts, 1 normally
open contact)
99
Discrete input for blocking of protective functions or remote acknowledgment 9999999
Password system 9999999
Wide-range power supply (90 to 265 Vac/dc) 9
99
Protective functions
Three-phase over-/undervoltage monitoring (2 limits) V>, V< 9999999
Zero voltage monitoring: dead bus start (close CB to dead busbar) V ≠0
99
Voltage asymmetry monitoring VAS> 9999999
Three-phase over-/underfrequency monitoring (2 limits) f>, f< 9999999
Vector/phase shift monitoring dϕ/dt
999
df/dt ROCOF monitoring df/dt
99
Synch-check function (not available for 690 V versions) IE>, IE>>
99
1only 1 freely configurable relay, the other one is fixed to synch-check
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 37351A MFR 11 Packages - Protection Relay
© Woodward Page 9/59
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 37351A MFR 11 Packages - Protection Relay
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Chapter 3.
Installation
Wiring Diagram 100/400 V Package Models (Standard)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
supervised system (variable)
Subject to technical modifications.
7 8
CB
3/4
Relay 2
Relay 1
(Ready for operation)
2005-09-13 | MFR 11 Wiring Diagram r13ww-3705-ap.skf
121110913 161514
Pack. SC
5 6 70 71 72 1 2 43
Measuring voltage L1
not measured
Blocking of protective functions
or remote acknowledgement
Synchronizing voltage L2
Synchronizing voltage L1
Synchronizing voltage L3
Measuring voltage
three-wire or
four-wire system Measuring voltage L2
Measuring voltage L3
(Measuring voltage N)
Relay 8
MFR 11 (Multi Function Relay)
Relay 3
(Package SC: Synch-check)
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
must be plugged in.
Packages G59 / G59N
all Packages
all Packages
0 Vdc
24 Vdc
Packages SC+N/NU/G59N: 90 to 265 Vac/dc
27212019 22 26252423 28 32313029
all Packages
Relay 4
Relay 5
Relay 6
Relay 7
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.
3/42/3
Figure 3-1: Wiring diagram 100/400 V package models

Manual 37351A MFR 11 Packages - Protection Relay
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Wiring Diagram 690 V Package Models (Packages MP /G59)
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Packages MP / G59Pkg MP / G59
supervised system (variable)
Subject to technical modifications.
7 8
CB
0 Vdc
24 Vdc
3/4
Relay 4
Relay 5
Relay 6
Relay 7
Relay 2
Relay 1
(Ready for operation)
Packages MP / G59
2005-09-13 | MFR 11 Wiring Diagram r13ww-3705-ap.skf
121110913 161514
Relay 8
65
Measuring voltage L3
(Measuring voltage N)
1
Measuring voltage
three-wire or
four-wire system
2 43
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
must be plugged in.
MFR 11 (Multi Function Relay)
Package G59
27212019 22 26252423 28 32313029
synchronizing system (fixed)
3/4
Figure 3-2: Wiring diagram 690 V package models

Manual 37351A MFR 11 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 48 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 MP /VDEW /G59 /SC)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
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 (Packages MP /VDEW /G59 /SC)
8 18 to 30 Vdc 2.5 mm²
7 0 V reference point 2.5 mm²
Wide Range Power Supply (Packages NU /G59N /SC+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
Wide range power supply unit (Packages NU /G59N /SC+N)
8 90 to 265 Vac/dc 2.5 mm²
7 0 V reference point 2.5 mm²

Manual 37351A MFR 11 Packages - Protection Relay
© Woodward Page 13/59
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 37351A MFR 11 Packages - Protection Relay
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Synchronizing Voltage (Packages SC &SC+N)
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 Packages SC & SC+N are 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 37351A MFR 11 Packages - 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 17.)
Signal device
Digital input
AB
18 to 250 V (AC/DC)
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 / Packages G59 &G59N)
AB
Relay output
Relay output
external device
external device
external device
CDE
max. 250 V AC
Figure 3-9: Relay outputs
Terminal Description
Make-contact Amax
Root closing
A B
9 10 Relay 1 2.5 mm²
31 32 Relay 8 Packages G59 &G59N 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 Packages G59 &G59N 2.5 mm²
22 23 24 Relay 5 Packages G59 &G59N 2.5 mm²
25 26 27 Relay 6 Packages G59 &G59N 2.5 mm²
28 29 30 Relay 7 Packages G59 &G59N 2.5 mm²

Manual 37351A MFR 11 Packages - Protection Relay
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Interface
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
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 37351A MFR 11 Packages - Protection Relay
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Chapter 4.
Functional Description
Control Inputs
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NOTE
The subsequent input "Blocking of protective functions / remote acknowledgement" does not exist in
the 690 V-version.
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
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 42).
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.

Manual 37351A MFR 11 Packages - Protection Relay
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Control Outputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
NOTE
A description of the relay manager may be found in Changing the Relay Assignment (Standard / Pack-
ages G59 &G59N) starting on page 44.
Relay 1
Terminal 9/10 Output relay (type: make contact, NO)
The "relay manager" controls this relay.
NOTE
The "ready for operation" function is always assigned to relay 1. However, other protective functions
may also be assigned to relay 1 additionally. Relay 1 is always configured as Normally Closed (break
contact) and will de-energize if the unit is not ready for operation.
Relay 2, 3
Terminal 11 through 16 Output relay (type: change-over contact)
The "relay manager" controls this relay.
NOTE
For units with Package SC, the synch-check function is assigned to relay 3. Therefore, relay 3 cannot
be configured with the relay manager. If the parameter "2. Synch.Check relay 2" is configured to "ON",
the synch-check function is also assigned to relay 2 and relay 2 cannot be configured with the relay
manager (starting with SW version 3.1450).
Packages G59 &G59N
Relay 4 to 7
Terminal 19 through 30
Output relay (type: change-over contact)
The "relay manager" controls this relay.
Packages G59 &G59N
Relay 8
Terminal 31/32
Output relay (type: make contact, NO)
The "relay manager" controls this relay.

Manual 37351A MFR 11 Packages - Protection Relay
© Woodward Page 19/59
Alarms
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Alarm Messages
Table 4-1 contains a list of all alarm messages that the control may monitor for depending on how the unit is con-
figured:
Alarm type Alarm text
Overvoltage, level 1 Standard Overvolt.1
Overvoltage, level 2 Standard Overvolt.2
Undervoltage, level 1 Standard Und.volt.1
Undervoltage, level 2 Standard Und.volt.2
Asymmetry Standard
Asymmetry
Overfrequency, level 1 Standard Overfreq.1
Overfrequency, level 2 Standard Overfreq.2
Underfrequency, level 1 Standard Und.freq.1
Underfrequency, level 2 Standard Und.freq.2
Vector/phase shift Packages VDEW /G59 / G59N Ph. shift
df/dt (ROCOF) Packages G59 / G59N Fault df
Table 4-1: Alarm messages
Alarm Acknowledgement
A fault/alarm is indicated by the "Alarm" LED.
By pressing the "Clear" button, the active faults are acknowledged. The following distinction is made between
fault conditions:
The fault ...
•is still active As long as the fault is still present, it cannot be acknowledged. The flashing "Alarm"
LED on the front panel indicates that the alarm is still active.
•is no longer active When the active fault has been eliminated, the flashing "Alarm" LED changes to steady
illumination. If the parameter "Auto clearing displays" is configured "ON", the LED ex-
tinguishes after the resetting time has expired. If the parameter "Auto clearing displays"
is configured "OFF", the LED is extinguished only after pressing the "Clear" button.

Manual 37351A MFR 11 Packages - Protection Relay
Page 20/59 © Woodward
Chapter 5.
Display and Operating Elements
The pressure-sensitive membrane of the front panel consists of a plastic coating. All keys have been designed as
touch-sensitive membrane switch elements. The display is an LC-display, consisting of 2 rows of 16 characters
each, with indirect green lighting. The contrast of the display can be infinitely adjusted via a rotary potentiometer
positioned on the right side of the control. The configuration plug is located on the right side of the unit as well.
Please connect the direct configuration cable there (DPC).
MFR 1
[ ]L2 / L23L1 / L12 L3 / L31
Hz Reversible Display
Operating
Display Menu
Digit Cursor
Clear
Alarm
Converting, Controlling, Monitoring
Select
14
1/2
131243
5
7
6
Figure 5-1: Front panel
Brief Description of LEDs and Push Buttons
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LEDs
No. Description Function
1"Wye" Indication of the wye (star) voltages
2"Delta" Indication of the delta voltages
3"Operating" Automatic mode
4"Alarm" Alarm occurred
Push Buttons
No. Description Function
12 Display↓Advance to next screen
12 Select Confirm selection
13 Menu Select menu
13 Digit↑Increase the digit
14 Clear Acknowledgement of alarm messages
14 Cursor→Move cursor one position to the right
Miscellaneous
No. Description Function
5LC Display LC Display
6Potentiometer Adjust LCD contrast
7DPC plug Configuration plug