Woodward SPM-D21 User manual

37249A
Manual
from Version 6.2430
Manual 37249A
SPM-D21
Synchronizing Unit

Manual 37249A SPM-D21 - Synchronizing Unit
Page 2/92 © 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OUT-OF-DATE PUBLICATION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 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 3/92
Revision History
Rev. Date Editor Changes
NEW 04-05-27 Tr Release
A 06-03-28 TP Changed screens for voltage monitoring from V6.2430; Package harmonization
Contents
CHAPTER 1. GENERAL INFORMATION.........................................................................................7
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS.............................................................8
CHAPTER 3. INSTALLATION .......................................................................................................9
Wiring Diagrams....................................................................................................................................10
SPM-D21/PSV ............................................................................................................................10
SPM-D21/PSVX..........................................................................................................................11
Reference Point ....................................................................................................................................12
Power Supply ........................................................................................................................................12
Measuring Inputs...................................................................................................................................13
Voltage........................................................................................................................................13
Generator....................................................................................................................................13
Busbar.........................................................................................................................................14
Mains ..........................................................................................................................................14
Current ........................................................................................................................................15
Generator....................................................................................................................................15
Discrete Inputs ......................................................................................................................................16
Analog Input ..........................................................................................................................................17
Auxiliary And Control Outputs...............................................................................................................17
Circuit Breaker Actions ...............................................................................................................17
Other Actions ..............................................................................................................................18
Controller Outputs .................................................................................................................................19
SPM-D21/PSV ............................................................................................................................19
SPM-D21/PSVX..........................................................................................................................20
CHAPTER 4. FUNCTIONAL DESCRIPTION ..................................................................................22
Functionality ..........................................................................................................................................22
Function Table For Terminal 6 = "Enable Control".....................................................................22
Functional Table For Terminal 6 = "Release Power Control Setpoint 2" ...................................26
Additional Conditions ..................................................................................................................28
Control Inputs........................................................................................................................................29
Operating Conditions ............................................................................................................................31
Idle Control..................................................................................................................................31
Synchronizing GCB ....................................................................................................................31
Synchronizing MCB ....................................................................................................................32
Synch-Check GCB......................................................................................................................33
Synch-Check MCB .....................................................................................................................33
Isolated Operation ......................................................................................................................33
Closing The GCB Without Synchronization (Dead Bus start GCB) ...........................................34
Closing The MCB Without Synchronization (Dead Bus start MCB) ...........................................34
Operation In Parallel With The Mains.........................................................................................35
LED "Gen CB - ON" Flashes ......................................................................................................35
LED "Bus CB - ON" Flashes.......................................................................................................35

Manual 37249A SPM-D21 - Synchronizing Unit
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Control Outputs..................................................................................................................................... 36
Isolation Of The Power Supply From The Discrete Inputs ................................................................... 36
Analog Controller Outputs .................................................................................................................... 37
CHAPTER 5. DISPLAY AND OPERATING ELEMENTS.................................................................. 40
Brief Explanation Of The LEDs And Push-Buttons .............................................................................. 41
LEDs........................................................................................................................................... 41
Buttons ....................................................................................................................................... 41
Others......................................................................................................................................... 41
LEDs ..................................................................................................................................................... 42
Push-Buttons ........................................................................................................................................ 44
LC Display ............................................................................................................................................ 45
Display Monitoring In Automatic Mode: Double Voltage / Frequency Display........................... 45
Display Monitoring In Automatic Mode: Generator Values ........................................................ 45
Display Monitoring In Automatic Mode: Alarm Indication........................................................... 46
CHAPTER 6. CONFIGURATION ................................................................................................. 47
Configure Basic Data............................................................................................................................ 47
Password Protection .................................................................................................................. 48
Direct Configuration.................................................................................................................... 49
Configure Basic Settings ...................................................................................................................... 50
Configure Controller ............................................................................................................................. 52
Idle Control ................................................................................................................................. 52
Frequency Controller.................................................................................................................. 53
Voltage Controller....................................................................................................................... 57
Power Factor Control ................................................................................................................. 60
Real Power Controller ................................................................................................................ 62
Partial Load Lead ....................................................................................................................... 62
Shut Down.................................................................................................................................. 62
Setpoint Specification Via Analog Input 0/4 to 20 mA................................................................ 63
Three-Position Controller (SPM-D21/PSV And SPM-D21/PSVX: Setting 'THREESTEP')........ 64
Analog Controller Outputs.......................................................................................................... 64
Synchronization .................................................................................................................................... 65
Configure Synchronization ......................................................................................................... 65
Synchronization Time Monitoring............................................................................................... 67
Dead Bus Start ..................................................................................................................................... 68
Monitoring Configuration ...................................................................................................................... 69
Generator Reverse/Reduced Power Monitoring ........................................................................ 69
Generator Overload Monitoring.................................................................................................. 70
Generator Frequency Monitoring ............................................................................................... 71
Generator Voltage Monitoring ....................................................................................................72
Mains Frequency Monitoring......................................................................................................73
Mains Voltage Monitoring........................................................................................................... 74
Phase Shift Monitoring ............................................................................................................... 75
Auto Acknowledge Messages .................................................................................................... 76
Password Configuration ....................................................................................................................... 76
CHAPTER 7. COMMISSIONING.................................................................................................. 77

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 5/92
APPENDIX A. DIMENSIONS ......................................................................................................79
APPENDIX B. TECHNICAL DATA ...............................................................................................80
APPENDIX C. PARAMETER LIST ...............................................................................................82
APPENDIX D. POWER FACTOR DEFINITION...............................................................................85
APPENDIX E. SERVICE OPTIONS..............................................................................................87
Product Service Options .......................................................................................................................87
Returning Equipment For Repair ..........................................................................................................87
Packing A Control .......................................................................................................................88
Return Authorization Number RAN ............................................................................................88
Replacement Parts................................................................................................................................88
How To Contact Woodward ..................................................................................................................89
Engineering Services ............................................................................................................................90
Technical Assistance ............................................................................................................................91

Manual 37249A SPM-D21 - Synchronizing Unit
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Illustrations and Tables
Illustrations
Figure 3-1: Wiring diagram SPM-D21/PSV........................................................................................................10
Figure 3-2: Wiring diagram SPM-D21/PSVX.....................................................................................................11
Figure 3-3: Reference point.................................................................................................................................12
Figure 3-4: Power supply (24 Vdc)......................................................................................................................12
Figure 3-5: Measuring inputs - generator voltage................................................................................................13
Figure 3-6: Measuring inputs - Busbar voltage....................................................................................................14
Figure 3-7: Measuring inputs - mains voltage .....................................................................................................14
Figure 3-8: Measuring inputs - Generator current ...............................................................................................15
Figure 3-9: Discrete inputs...................................................................................................................................16
Figure 3-10: Analog input....................................................................................................................................17
Figure 3-11: Relay outputs - control outputs I (CB control)................................................................................17
Figure 3-12: Relay outputs - control outputs II (messages).................................................................................18
Figure 3-13: Controller - SPM-D21/PSV - three position controller...................................................................19
Figure 3-14: Controller - SPM-D21/PSVX - three position controller ................................................................20
Figure 3-15: Controller - SPM-D21/PSVX - analog controller output - speed/frequency...................................21
Figure 3-16: Controller - SPM-D21/PSVX - analog controller output - voltage .................................................21
Figure 4-1: Control loop ......................................................................................................................................37
Figure 4-2: Step response (example) ...................................................................................................................37
Figure 4-3: Step response - controller set-up.......................................................................................................39
Figure 5-1: Front foil ...........................................................................................................................................40
Figure 7-1: Dimensions........................................................................................................................................79
Tables
Table 3-1: Conversion chart - wire size.................................................................................................................9
Table 4-1: Operating conditions - terminal 6 = "Enable control"........................................................................23
Table 4-2: Operating conditions - Terminal 6 = "Enable control".......................................................................24
Table 4-3: Operating conditions - Terminal 6 = "Enable control".......................................................................24
Table 4-4: Operating conditions - Terminal 6 = "Enable control".......................................................................25
Table 4-5: Operating conditions - Terminal 6 = "Enable control".......................................................................26
Table 4-6: Operating conditions - Terminal 6 = "Enable control".......................................................................27
Table 4-7: Operating conditions - Terminal 6 = "Enable control".......................................................................27
Table 4-8: Operating conditions - terminal 6 = "OFF"........................................................................................27
Table 4-9: Operating conditions - terms ..............................................................................................................28

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 7/92
Chapter 1.
General Information
The SPM-D21 is a synchronizing unit. Through appropriate using of the discrete inputs the following functions
can be realized:
•Synchronization (GCB and MCB)
•Synch-check (GCB and MCB)
•Dead bus start (GCB and MCB)
•Idle operation
•Isolated operation
•Operation in parallel with the mains
The SPM-D starts as a standard unit that may have additional functions added with each package. The model of
the SPM-D is designated as follows:
SPM-D21 4 5 B/ xx
Packages according to the Package list.
These packages can be found in the manual. Each headline points
out if the described function is standard or part of a package.
Mounting
[B].. Flush-mounting
CT's, current transformers, secondary
[1] = ../1 A
[5] = ../5 A
Voltage transformers/PT's, secondary
[1] = 100 Vac
[4] = 400 Vac
Type
Example:
•SPM-D2145B/PSV (PSV Package with 400 Vac PT measuring inputs and 5 A CT measuring input)
Intended Use The unit may only be operated for the uses described in this manual. The prerequisite for a proper
and safe operation of the product is correct transportation, storage, and installation as well as careful operation
and maintenance.
NOTE
This manual has been developed for an 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. On
account of the large variety of parameter settings, it is not possible to cover every possible combina-
tion. The manual are therefore only a guide. In case of incorrect entries or a total loss of functions, the
default settings can be taken from the enclosed list of parameters.

Manual 37249A SPM-D21 - Synchronizing Unit
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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
charges as much as synthetics.
3. Keep plastic, vinyl, and Styrofoam materials (such as plastic or Styrofoam cups, cup holders, cigarette
packages, cellophane wrappers, vinyl books or folders, plastic bottles, and plastic ash trays) away from
the control, the modules, and the work area as much as possible.
4. With the opening of the unit the guarantee expires!
Do not remove the printed circuit board (PCB) from the control cabinet unless absolutely necessary. If
you have to remove the PCB from the control cabinet, follow these precautions:
•Do not touch any part of the PCB except the edges.
•Do not touch the electrical conductors, the connectors, or the components with conductive units or
with your 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.
WARNING
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 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 9/92
Chapter 3.
Installation
CAUTION
A circuit breaker must be provided 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
Inductivities connected (such as coils of operating current or undervoltage tripping units, or auxiliary
or power contacts) must be connected to a suitable interference suppressor.
WARNING
All technical data and ratings indicated in this chapter are not definite! Only the values indicated in
Fehler! Verweisquelle konnte nicht gefunden werden.: Fehler! Verweisquelle konnte nicht gefunden werden. on
page 80 are valid!
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

Manual 37249A SPM-D21 - Synchronizing Unit
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Wiring Diagrams
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
SPM-D21/PSV
s1 (k)
Reference point
14
Command: close GCB
2423
3
Subject to technical modifications.
L1
L2
Busbar voltage
15 3 4 112120 101312 8 9
GCB
3
Drive
G
Reply: GCB is open
Enable GCB
Generator voltage
Common (term. 3, 4, 5, 6)
Enable isolated operation / black start GCB
Enable control or
Enable real power setpoint value 2
0
2006-01-26 | SPM-D21 Wiring Diagram spmd21ww-0406-ap.skf
1 52 6
Ready for operation
719
Make cntct.
18
0 Vdc
24 Vdc
The socket for the PC configuration
is situated on the side of the unit.
SPEED / REAL POWER
Three-position controller
VOLTAGE / POWER FACTOR
Three-position controller
lower
raise
raise
lower
L1
L2
Battery
#
SPM-D21/PSV (Synchronizing Unit)
2625
Generator current L1
s2 (l)
39 40
Command: open GCB
( for shut-down)
Break
cntct.
16
3
17 53 54
MCB
Command: close MCB
Reply: MCB is open
Enable MCB
5150
L1
L2 Mains voltage
52
L3
Generator overvoltage
Generator undervoltage
41 42
Breake cntct.
Mains overvoltage
Mains undervoltage
33 34
Breake cntct.
Mains overfrequency
Mains underfrequency
Phase/vector jump
35 36
Breake cntct.
Generator overfrequency
Generator underfrequency
43 44
Breake cntct.
External real power setpoint value
2827
GND
0..20 mA
Reverse/reduced power
Overload
37 38
Breake cntct.
Figure 3-1: Wiring diagram SPM-D21/PSV

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 11/92
SPM-D21/PSVX
s1 (k)
Reference point
14
Command: close GCB
2423
3
Subject to technical modifications.
L1
L2
Busbar voltage
15 3 4 112120 101312 8 9
GCB
3
Drive
G
Reply: GCB is open
Enable GCB
Generator voltage
SPEED / REAL POWER
Analog controller
VOLTAGE / POWER FACTOR
Analog controller
Common (term. 3, 4, 5, 6)
Enable isolated operation / black start GCB
Enable control or
Enable real power setpoint value 2
0
2006-01-26 | SPM-D21 Wiring Diagram spmd21ww-0406-ap.skf
1 52 6
Ready for operation
719
Make cntct.
18
0 Vdc
24 Vdc
The socket for the PC configuration
is situated on the side of the unit.
8109
Current
Speed
Governor
A
I
N/C
GND
Voltage
Speed
Governor
A
U
GND
PWM
Speed
Governor
GND
PWM
L1
L2
Battery
#
8109 8 10911 1312
Current
A
I
N/C
GND
Volt age
A
U
GND
AVRAVR
11 1312
SPM-D21/PSVX (Synchronizing Unit)
2625
Generator current L1
s2 (l)
Voltage / Power FactorFrequency / Real Power
39 40
Command: open GCB
( for shut-down)
Break
cntct.
16
3
17 53 54
MCB
Command: close MCB
Reply: MCB is open
Enable MCB
5150
L1
L2 Mains voltage
52
L3
45
Governing:
- Frequency lower (f-)
- Voltage lower (V-)
46 47 48
Governing:
- Frequency raise (f+)
- Voltage raise (V+)
Make cntct.
Make cntct.
Generator overvoltage
Generator undervoltage
41 42
Breake cntct.
Mains overvoltage
Mains undervoltage
33 34
Breake cntct.
Mains overfrequency
Mains underfrequency
Phase/vector jump
35 36
Breake cntct.
Generator overfrequency
Generator underfrequency
43 44
Breake cntct.
External real power setpoint value
2827
GND
0..20 mA
Reverse/reduced power
Overload
37 38
Breake cntct.
Figure 3-2: Wiring diagram SPM-D21/PSVX

Manual 37249A SPM-D21 - Synchronizing Unit
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Reference Point
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
0
Reference point
Figure 3-3: Reference point
Terminal Description Amax
0 Reference point: Neutral point of the three-phase system or neutral terminal of the voltage transformer (Measuring reference point);
with three-conductor systems, do not connect Sold. lug
Power Supply
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Power supply
1 2
0 V
24 Vdc (+/-25 %)
24 V DC
Figure 3-4: Power supply (24 Vdc)
Terminal Description Amax
Standard
1 +24 Vdc, 10 W 2.5 mm²
2 0 V 2.5 mm²

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 13/92
Measuring Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
NOTE
The three-phase system must have a clockwise field (right-handed rotary field). If the unit is used with
a counter-clockwise field (left-handed rotary field), the power factor measurement will not be correct.
Voltage
NOTE
There are generally three different variants for connection of the measuring circuit voltage:
Direct connection to the low voltage system,
Connection to medium voltage via two-pole isolated transformer (e. g. in the case of a V-connection)
and
Connection to medium voltage via single-pole isolated transformer (e. g. Y-connection).
Generator
Generator
voltage
020 21
G
L2
L1
123
MCB
L2
L1
L3
N
GCB
Figure 3-5: Measuring inputs - generator voltage
Note: Connection corresponding to the mains configuration (see wiring diagram).
Terminal Measurement Description Amax
Connection to the measuring circuit voltage corresponding to the variant , or 
20 Generator voltage L1 2.5 mm²
21 Generator voltage L2 2.5 mm²
0
direct or via
transformer
../100 V
Reference point: N-terminal of the low voltage system or
star point of the voltage transducer (measuring reference
point);
do not connect in three wire installations
Sold. lug

Manual 37249A SPM-D21 - Synchronizing Unit
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Busbar
GCB
Busbar voltage
G
L2
L1
23 24
1
N
L1
L2
L3
23
MCB
Figure 3-6: Measuring inputs - Busbar voltage
Note: Connection corresponding to the mains configuration (see wiring diagram).
Terminal Measurement Description Amax
Connection to the measuring circuit voltage corresponding to variant , or 
23 Busbar voltage L1 2.5 mm²
24 direct
or ../100 V Busbar voltage L2 2.5 mm²
Mains
MCB GCB
Mains voltage
G
L3
L2
L1
N
52 51 50
L3
L2
L1
Mains voltage
525150
L3
L2
L1
Figure 3-7: Measuring inputs - mains voltage
Note: Connection corresponding to the mains configuration (see wiring diagram).
Terminal Measurement Description Amax
50 Mains voltage L1 2.5 mm²
51 Mains voltage L2 2.5 mm²
52 Mains voltage L3 2.5 mm²
0
direct or meas-
urement trans-
ducer ../100 V Neutral point of three-phase system / measurement trans-
ducer 2.5 mm²

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 15/92
Current
WARNING
Before disconnecting the secondary terminals of the transformer or the connection of the transformer
at the unit make sure that the transformer is short circuited.
NOTE
Current transducers are generally to be earthed on one side secondarily.
Generator
N
L2
L3
L1
Generator current
../1 A or ../5 A
MCB
2625
s1 (k)
s2 (l) L1
GCB
G
S2 S1
s2 s1
Figure 3-8: Measuring inputs - Generator current
Terminal Measurement Description Amax
25 Generator current L1; transducer terminal s2(l) 2,5 mm²
26 Converter ../1A
or ../5A Generator current L1; transducer terminal s1(k) 2,5 mm²

Manual 37249A SPM-D21 - Synchronizing Unit
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Discrete Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
CAUTION
Please note that the maximum voltages which may be applied at the discrete inputs are defined as fol-
lows. Voltages higher than those specified destroy the hardware!
•Maximum input range: +/-18 to 250 Vac/dc.
A
Signal device
CB
Reply
Discrete input
Discrete input
B
18..250 V (AC/DC)
D C
3
Figure 3-9: Discrete inputs
Terminal Associated
zero-terminal Description (acc. DIN 40 719 part 3, 5.8.3) Amax
Make contact
A B
3 Enable GCB 2.5 mm²
5 Enable isolated operation / dead bus start GCB 2.5 mm²
6 Enable control or
Switching power setpoint value 1/212.5 mm²
53
7
Release MCB 2.5 mm²
Normally closed contact
C D
4 Reply: GCB is open 2.5 mm²
54 7 Reply: MCB is open 2.5 mm²
1siehe Parameter "Klemme 6" auf Seite Fehler! Textmarke nicht definiert.

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 17/92
Analog Input
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
WARNING
The analog inputs of the SPM-D are not isolated. When using an isolation monitor, we recommend to
use two-pole, isolated transmitters.
The analog inputs for active transmitters (0 to 20 mA, 0 to 10V) should only be operated with two-pole,
isolated transmitters.
NOTE
This analog input is not isolated galvanically. If different devices are controlled with the same signal, a
buffer amplifier must be installed before each device.
Analog input
0/4..20 mA
GND
28
A
I
27
Figure 3-10: Analog input
Terminal Associated
zero-terminal Description (acc. DIN 40 719 part 3, 5.8.3) Amax
27 28 Setpoint value power 2,5 mm²
Auxiliary And Control Outputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Circuit Breaker Actions
max. 250 V AC
AB
external device Relay output
Figure 3-11: Relay outputs - control outputs I (CB control)
Root Switched Description Amax
A B
14 15 Synchronizing pulse, Command: close GCB 2.5 mm²
16 17 Synchronizing pulse, Command: close MCB 2.5 mm²
39 40 Command: open GCB for shut down 2.5 mm²
NOTE
The relay "Open GCB for shutdown" is used to open the GCB, after the power was reduced automati-
cally (see also chapter 6 Configuration - Configure Controller). This relay is not triggered from watch-
dogs.

Manual 37249A SPM-D21 - Synchronizing Unit
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Other Actions
max. 250 V AC
AB
external device Relay output
Figure 3-12: Relay outputs - control outputs II (messages)
Monitoring relay Break-contact
Root Switched Description Amax
A B
Note: The relays release in case of error.
33 34 Mains over/under voltage 2.5 mm²
35 36 Mains over-/underfrequency, phase jump 2.5 mm²
37 38 Reverse/reduced power, overload 2.5 mm²
41 42 Generator over/under voltage 2.5 mm²
43 44 Generator over/under frequency 2.5 mm²
Signal relay Make-contact
Root Switched Description Amax
A B
Note: The relays pick up in case of error.
18 19 Readiness for operation 2,5 mm²

Manual 37249A SPM-D21 - Synchronizing Unit
© Woodward Page 19/92
Controller Outputs
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The SPM-D21/PSV is equipped with two three-position controllers for voltage and frequency (made of a form C
and form A relay). With the version SPM-D21/PSVX different controller output signals can be selected by con-
figuration, which are connected in different ways.
SPM-D21/PSV
max. 250 Vac
11 12 13
Voltage
controller
Common
Raise
Lower
Voltage controller
8
Common
Speed
controller Speed / frequency
controller
910
Lower
Raise
Figure 3-13: Controller - SPM-D21/PSV - three position controller
Terminal Description Amax
8 common 2.5 mm²
9 higher 2.5 mm²
10 lower
Speed/frequency controller 2.5 mm²
11 common 2.5 mm²
12 higher 2.5 mm²
13 lower
Voltage controller 2.5 mm²

Manual 37249A SPM-D21 - Synchronizing Unit
Page 20/92 © Woodward
SPM-D21/PSVX
The SPM-D21/PSVX has controller outputs for the following signals which can be changed by configuration as
well as over an external bridge.
Versions
NOTE
Only one controller output may be configured as three-step controller.
- Three-position controller via relay manager
- Control of n/f: Parameter "f-controller type" = THREESTEP
n+/f+ = Relay connected to terminals 45/46
n-/f- = Relay connected to terminals 47/48
- Control of V: parameter "v-controller type" = THREESTEP
V+ = Relay connected to terminals 45/46
V- = Relay connected to terminals 47/48
- Analog controller output
- Control of n/f: Parameter "f-controller type" = ANALOG
Current output (mA) = no external bridge/jumper necessary
Voltage output (V) = external bridge/jumper between 8/9
Connect the Controller to terminals 9/10
- Control of V: Parameter "v-controller type" = ANALOG
Current output (mA) = no external bridge/jumper necessary
Voltage output (V) = external bridge/jumper between 11/12
Connect the controller to terminals 12/13
- PWM controller output
- Control of n/f: Parameter "f-controller type" = PWM
PWM output = external bridge/jumper between 8/9
Connect the controller to terminals 9/10
Connection Of The Controllers
Setting: 'THREESTEP' (three-position controller)
The relay has to be decoupled.
AB
Relay output
max. 250 Vac
Figure 3-14: Controller - SPM-D21/PSVX - three position controller
Terminal Description Amax
45 / 46 raise 2.5 mm²
47 / 48 lower Speed / Frequency controller or
Voltage controller 2.5 mm²