Woodward TUG 4 User manual

37303A
Operation Manual
Software Version 1.6xx/2.6xx
Manual 37303A
TUG 4
Temperature Monitoring Unit

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 2/55 © 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OUT-OF-DATE PUBLICATION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 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 3/55
Revision History
Rev. Date Editor Change
NEW 04-12-22 TP Release
A 07-09-12 TP Minor corrections; range enlargement example added
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 TUG 4 Packages manual 37359 for more recent information about the TUG 4 unit.
Content
CHAPTER 1. GENERAL INFORMATION.........................................................................................6
Related Documents.................................................................................................................................6
Overview .................................................................................................................................................6
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS.............................................................7
CHAPTER 3. HOUSING ...............................................................................................................8
Dimensions .............................................................................................................................................8
CHAPTER 4. WIRING DIAGRAMS ................................................................................................9
TUG 404..................................................................................................................................................9
TUG 408................................................................................................................................................10
TUG 412................................................................................................................................................11
TUG 412/Th ..........................................................................................................................................12
TUG 416................................................................................................................................................13
Data Coupling TUG 4 Via Profibus DP .................................................................................................14
CHAPTER 5. CONNECTION.......................................................................................................15
Power Supply ........................................................................................................................................15
Discrete Inputs ......................................................................................................................................15
Relay Outputs .......................................................................................................................................16
Measurement Inputs/Analog Inputs (Option Th)...................................................................................17
Interface (Option Su).............................................................................................................................18
CHAPTER 6. FUNCTIONAL DESCRIPTION ..................................................................................19
Overview ...............................................................................................................................................19
Function ................................................................................................................................................19
Display...................................................................................................................................................20
Standard Display ........................................................................................................................20
Alarm Display..............................................................................................................................20
CHAPTER 7. DISPLAY AND CONTROL ELEMENTS......................................................................22
Front Panel............................................................................................................................................22
LEDs......................................................................................................................................................23
Push Buttons.........................................................................................................................................23
LC Display.............................................................................................................................................24

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 4/55 © Woodward
CHAPTER 8. CONFIGURATION ................................................................................................. 25
Password .............................................................................................................................................. 25
Measuring Inputs .................................................................................................................................. 26
Pt100 Measuring Inputs ............................................................................................................. 27
0/4 to 20 mA Measuring Inputs .................................................................................................. 28
Discrete Inputs...................................................................................................................................... 30
Relay Outputs ....................................................................................................................................... 30
Interfaces (Option Su) .......................................................................................................................... 31
Screens for Protocol DK3964.....................................................................................................31
Screens for Protocol Profibus DP Slave .................................................................................... 31
Screens for Protocol MOD Bus RTU Slave ............................................................................... 32
Screens for Protocol CAN Bus................................................................................................... 32
CHAPTER 9. COMMISSIONING.................................................................................................. 33
CHAPTER 10. TECHNICAL DATA .............................................................................................. 34
APPENDIX A. INTERFACE (OPTION SU).................................................................................... 36
Transmitting Telegram.......................................................................................................................... 36
Receiving Telegram (Profibus DP)....................................................................................................... 40
Receiving Telegram (Modbus RTU Slave)...........................................................................................41
General Data for the Interfaces ............................................................................................................ 42
APPENDIX B. REVISION HISTORY ............................................................................................ 43
APPENDIX C. PARAMETER LIST............................................................................................... 44
APPENDIX D. SERVICE OPTIONS ............................................................................................. 50
Product Service Options....................................................................................................................... 50
Returning Equipment for Repair........................................................................................................... 50
Packing a Control ....................................................................................................................... 51
Return Authorization Number RAN ............................................................................................ 51
Replacement Parts ............................................................................................................................... 51
How to Contact Woodward................................................................................................................... 52
Engineering Services............................................................................................................................ 53
Technical Assistance............................................................................................................................ 54

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 5/55
Illustrations and Tables
Illustrations
Figure 3-1: Dimensions TUG 4..................................................................................................................................................8
Figure 4-1: Wiring diagram TUG 404 .......................................................................................................................................9
Figure 4-2: Wiring diagram TUG 408 .....................................................................................................................................10
Figure 4-3: Wiring diagram TUG 412 .....................................................................................................................................11
Figure 4-4: Wiring diagram TUG 412/Th................................................................................................................................12
Figure 4-5: Wiring diagram TUG 416 .....................................................................................................................................13
Figure 4-6: Data coupling TUG 4............................................................................................................................................14
Figure 5-1: Power supply.........................................................................................................................................................15
Figure 5-2: Discrete inputs.......................................................................................................................................................15
Figure 5-3: Relay output..........................................................................................................................................................16
Figure 5-4: Analog inputs........................................................................................................................................................17
Figure 5-5: Interfaces...............................................................................................................................................................18
Figure 5-6: CAN bus................................................................................................................................................................18
Figure 7-1: Front panel ............................................................................................................................................................22
Tables
Table 1-1: Manual - overview....................................................................................................................................................6
Table 5-1: Power supply- terminal assignment........................................................................................................................15
Table 5-2: Discrete inputs - terminal assignment.....................................................................................................................15
Table 5-3: Relay output - terminal assignment........................................................................................................................16
Table 5-4: Analog inputs - terminal assignment......................................................................................................................17
Tabelle 5-5: Interfaces - terminal assignment..........................................................................................................................18

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 6/55 © Woodward
Chapter 1.
General Information
Related Documents
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Type English German
Temperature Monitoring Unit TUG 4
TUG 4 – Manual this manual Ö37303 GR37303
Table 1-1: Manual - overview
Overview
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
The versions described in this operating instructions only vary as far as the number of measuring inputs is
concerned.
• TUG 404 4 measuring inputs
• TUG 408 8 measuring inputs
• TUG 412 12 measuring inputs
• TUG 416 16 measuring inputs
Please refer to the name plate of your TUG 4 to establish the correct type.
Intended Use The control unit must only be operated as described in this manual. The prerequisite for a proper
and safe operation of the product is correct transportation, storage, and installation as well as careful operation
and maintenance.
NOTE
This manual has been developed for a unit fitted with all available options. Inputs/outputs, functions,
configuration screens and other details described, which do not exist on your unit may be ignored.
The present manual has been prepared to enable the installation and commissioning of the unit. Be-
cause of the large variety of parameter settings, it is not possible to cover every possible combination.
The manual is therefore only a guide. In case of incorrect entries or a total loss of functions, the default
settings can be taken from the enclosed list of parameters.

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 7/55
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 performing maintenance on the electronic control, discharge the static electricity on your body to
ground by touching and holding a grounded metal object (pipes, cabinets, equipment, etc.).
2. Avoid the build-up of static electricity on your body by not wearing clothing made of synthetic materials.
Wear cotton or cotton-blend materials as much as possible because these do not store static electric
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. Opening the control cover may void the unit warranty.
Do not remove the Printed Circuit Board (PCB) from the control cabinet unless absolutely necessary. If
you must remove the PCB from the control cabinet, follow these precautions:
•Ensure that the device is completely de-energized (all connectors must be disconnected).
•Do not touch any part of the PCB except the edges.
•Do not touch the electrical conductors, connectors, or components with conductive devices with your
hands.
•When replacing a PCB, keep the new PCB in the protective antistatic bag it comes in until you are
ready to install it. Immediately after removing the old PCB from the control cabinet, place it in the
protective antistatic bag.
CAUTION
To prevent damage to electronic components caused by improper handling, read and observe the pre-
cautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed
Circuit Boards, and Modules.

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 8/55 © Woodward
Chapter 3.
Housing
Dimensions
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
DIN rail mount
option
Front view
2004-10-04 | TUG 4 Dimensions t4ww-4104-ab.skf
144
139
Bottom view
116
8
72
50
65
179
11413
3940
26
27
69
27 35
Back view with
connecting terminals
57 56
X1
4244
X6
Figure 3-1: Dimensions TUG 4

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 9/55
Chapter 4.
Wiring Diagrams
TUG 404
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
21
Pt100 input 3
or
Analog input 3
Relay 1
Relay 2
24 Vdc
0 Vdc
TÜG 404
Pt100 input 1
or
Analog input 1
Wire break
Pt100 input 2
or
Analog input 2
Ready for
operation
31 2 94 5 6 7 8 1510 11 12 13 14 16 17 18 19 20
Pt100 input 4
or
Analog input 4
Interface
X125 2622 23 24 X5X4X3X2
2004-09-22 | TUG 4 Wiring Diagram t4ww-0439-ap.skfSubject to technical modifications.
X6
Figure 4-1: Wiring diagram TUG 404

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 10/55 © Woodward
TUG 408
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
3741 40 39 38 36 35 34 33
Pt100 input 8
or
Analog input 8
Discrete input
"Acknowledgment"
Pt100 input 7
or
Analog input 7
Pt100 input 3
or
Analog input 3
21
Relay 1
Relay 2
24 Vdc
0 Vdc
TÜG 408
Pt100 input 1
or
Analog input 1
Wire break
Pt100 input 2
or
Analog input 2
Ready for
operation
31 2 94 5 6 7 8 1510 11 12 13 14 16 17 18 19 20
Pt100 input 4
or
Analog input 4
Pt100 input 6
or
Analog input 6
Pt100 input 5
or
Analog input 5
Interface
X12725 2622 23 24 28 29 30 3231 X5X4X3X2
2004-09-22 | TUG 4 Wiring Diagram t4ww-0439-ap.skfSubject to technical modifications.
X6
Figure 4-2: Wiring diagram TUG 408

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 11/55
TUG 412
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Pt100 input 6
or
Analog input 6
676869 6566 64 63 62 61 5960 58 57 56 55 5354 52 51 50 49
Pt100 input 10
or
Analog input 10
Pt100 input 11
or
Analog input 11
Pt100 input 12
or
Analog input 12
Pt100 input 8
or
Analog input 8
Pt100 input 9
or
Analog input 9
Pt100 input 7
or
Analog input 7
434748 46 45 44 42
Pt100 input 5
or
Analog input 5
Discrete input
"Acknowledgment"
Pt100 input 3
or
Analog input 3
21
Relay 1
Relay 2
24 Vdc
0 Vdc
TÜG 412
Pt100 input 1
or
Analog input 1
Wire break
Pt100 input 2
or
Analog input 2
Ready for
operation
31 2 94 5 6 7 8 1510 11 12 13 14 16 17 18 19 20
Pt100 input 4
or
Analog input 4
Interface
X125 2622 23 24 X5X4X3X2
2004-09-22 | TUG 4 Wiring Diagram t4ww-0439-ap.skfSubject to technical modifications.
X6
Figure 4-3: Wiring diagram TUG 412

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 12/55 © Woodward
TUG 412/Th
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
0 mA
+20 mA
0 mA
+20 mA
0 mA
+20 mA
0 mA
+20 mA
0 mA
+20 mA
0 mA
+20 mA
676869 6566 64 63 62 61 5960 58 57 56 55 5354 52 51 50 49
Analog input 10
Analog input 12
Analog input 11
Analog input 9
Analog input 7
Analog input 8
0 mA
+20 mA
0 mA
+20 mA
434748 46 45 44 42
Analog input 5
Analog input 6
Discrete input
"Acknowledgment"
21
0 mA
Analog input 3
24 Vdc
0 Vdc
Relay 1
Relay 2
TÜG 412/Th
Wire break
Ready for
operation
Analog input 1
Analog input 2
1 2 3 94 5 6 7 8
0 mA
1510 11 12 13 14
+20 mA
16 17 18 19 20
0 mA
+20 mA
+20 mA
Analog input 4
Interface
X125 2622 23 24
0 mA
+20 mA
X5X4X3X2
2004-09-22 | TUG 4 Wiring Diagram t4ww-0439-ap.skfSubject to technical modifications.
X6
Figure 4-4: Wiring diagram TUG 412/Th

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 13/55
TUG 416
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Pt100 input 10
or
Analog input 10
676869 6566 64 63 62 61 5960 58 57 56 55 5354 52 51 50 49
Pt100 input 14
or
Analog input 14
Pt100 input 16
or
Analog input 16
Pt100 input 15
or
Analog input 15
Pt100 input 13
or
Analog input 13
Pt100 input 12
or
Analog input 12
Pt100 input 11
or
Analog input 11
37434748 46 45 44 41 40 39 3842 36 35 34 33
Pt100 input 8
or
Analog input 8
Pt100 input 9
or
Analog input 9
Discrete input
"Acknowledgment"
Discrete input
Pt100 input 7
or
Analog input 7
Pt100 input 3
or
Analog input 3
21
Relay 1
Relay 2
24 Vdc
0 Vdc
TUG 416
Wire break
Ready for
operation
Pt100 input 1
or
Analog input 1
Pt100 input 2
or
Analog input 2
31 2 94 5 6 7 8 1510 11 12 13 14 16 17 18 19 20
Pt100 input 4
or
Analog input 4
Pt100 input 5
or
Analog input 5
Pt100 input 6
or
Analog input 6
Interface
X12725 2622 23 24 28 29 30 3231 X5X4X3X2
2004-09-22 | TUG 4 Wiring Diagram t4ww-0439-ap.skfSubject to technical modifications.
X6
Figure 4-5: Wiring diagram TUG 416

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 14/55 © Woodward
Data Coupling TUG 4 Via Profibus DP
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
2003-01-24 | Datenkopplung 2004-08-30.skf
A B
External unit PLC
According to the specifications, the PLC has to be possibly ter- minated with a resistor too. The Leon00d9.gsd has to be used.
A-Line B-Line
Stream
GND
RTS
+5 V
Profibus DP
X3/Y3 X6/Y6 X4/Y4 X5/Y5 X2/Y2 X1/Y1
220 Ohm
390 Ohm 390 Ohm
Woodward unit e.g. MFR 1, MFR 2, TÜG 4, etc.
Coupling direct out of the units via Profibus DP slave
Data coupling
Figure 4-6: Data coupling TUG 4

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 15/55
Chapter 5.
Connection
CAUTION
A circuit breaker must be provided near 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.
Power Supply
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
18 to 30 Vdc
2 1
0 V
18 to 30 Vdc
Power supply
Figure 5-1: Power supply
Terminal Description Amax
2 0 V reference potential 2.5 mm²
1 18 to 30 Vdc 2.5 mm²
Table 5-1: Power supply- terminal assignment
Discrete Inputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Signal device
Discrete input
AB
+/-18 to 250 Vac/dc
Figure 5-2: Discrete inputs
Terminal Description (according to DIN 40 719 section 3, 5.8.3) Amax
A B N.O. contact
TUG 408
40 41 Discrete input "Clear" (Acknowledge) 1.5 mm²
TUG 412 / 416
40 41 Discrete input 1 (without function) 1.5 mm²
42 43 Discrete input 2 "Clear" (Acknowledge) 1.5 mm²
Table 5-2: Discrete inputs - terminal assignment

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 16/55 © Woodward
Relay Outputs
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
AB
Relay output
Relay output
external device
external device
external device
CDE
max. 250 Vac
Figure 5-3: Relay output
Terminal Description Amax
N.O. contact
Root Closing
A B
13 . Readiness for operation 1.5 mm²
Form C contacts
Closing Root Opening
C D E
5 4 3 Limit value 1 exceeded 1.5 mm²
8 7 6 Limit value 2 exceeded 1.5 mm²
11 10 9 Wire break 1.5 mm²
Table 5-3: Relay output - terminal assignment

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 17/55
Measurement Inputs/Analog Inputs (Option Th)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
GND
only at Pt100
C CA
a
I
B AB
Analog input
0/4 to 20 mA
Analog input
Pt100 or Pt1000
Figure 5-4: Analog inputs
Terminal Description Amax
A B C
TUG 404, TUG 408, TUG 412, TUG 416
14 15 16 Temperature/analog input 1 1.5 mm²
17 18 19 Temperature/analog input 2 1.5 mm²
20 21 22 Temperature/analog input 3 1.5 mm²
23 24 25 Temperature/analog input 4 1.5 mm²
TUG 412
44 45 46 Temperature/analog input 5 1.5 mm²
47 48 49 Temperature/analog input 6 1.5 mm²
50 51 52 Temperature/analog input 7 1.5 mm²
53 54 55 Temperature/analog input 8 1.5 mm²
57 58 59 Temperature/analog input 9 1.5 mm²
60 61 62 Temperature/analog input 10 1.5 mm²
63 64 65 Temperature/analog input 11 1.5 mm²
66 67 68 Temperature/analog input 12 1.5 mm²
TUG 408, TUG 416
27 28 29 Temperature/analog input 5 1.5 mm²
30 31 32 Temperature/analog input 6 1.5 mm²
33 34 35 Temperature/analog input 7 1.5 mm²
36 37 38 Temperature/analog input 8 1.5 mm²
44 45 46 Temperature/analog input 9 only 416 1.5 mm²
47 48 49 Temperature/analog input 10 only 416 1.5 mm²
50 51 52 Temperature/analog input 11 only 416 1.5 mm²
53 54 55 Temperature/analog input 12 only 416 1.5 mm²
57 58 59 Temperature/analog input 13 only 416 1.5 mm²
60 61 62 Temperature/analog input 14 only 416 1.5 mm²
63 64 65 Temperature/analog input 15 only 416 1.5 mm²
66 67 68 Temperature/analog input 16 only 416 1.5 mm²
Table 5-4: Analog inputs - terminal assignment

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 18/55 © Woodward
Interface (Option Su)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
DA B C
Interface RS485 interface MOD bus RTU slave
GND
C
Interface RS232 interface
GND
RTS
RxD
CTS
TxD
ACA B D E B
The transmitter drives the current. Interface TTY interface
RxD +
B (inverted)
A (non-inverted)
RxD -
NC
TxD +
TxD -
D E A CB D E
Interface CAN bus
CAN-L
Termination
CAN-H
GND
CA B D E
Interface Profi bus DP
Screen
A-Line
GND
+5 V
E F
B-Line
RTS
Figure 5-5: Interfaces
Terminal Description
A(X1) B(X2) C(X3) D(X4) E(X5)
RxD RTS GND CTS TxD RS-232
GND B A RS-485, MOD bus 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)
Shield +5 V GND A-Line B-Line RTS Profibus DP (File
LEON00D9.GSD must be used)
Tabelle 5-5: Interfaces - terminal assignment
Interface
CAN bus
CAN-H
CAN-L
GND
Shield
2 MOhm
3.3 uF
1,000 Vac
Figure 5-6: CAN bus
NOTE
Please note that both ends of the CAN bus must be terminated between CAN-H and CAN-L with a
resistance which corresponds to the surge impedence of the cable ( e.g. 120 Ohm). Also, the
Profibus DP must be terminated according to the specification (refer to Data Coupling TUG 4 on
page 14).

Manual 37303A Temperature Monitoring Unit - TUG 4
© Woodward Page 19/55
Chapter 6.
Functional Description
Overview
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
The temperature monitoring unit TUG 4 is based on a microprocessor driven measuring method, which
guarantees a high-precision and cost-efficient recording of 4, 8, 12 or 16 temperature measuring inputs without
the use of external measuring transducers or auxiliary devices (Pt100 in two- or three-wire technology). Standard
devices are able to measure temperatures within a range of -20 °C up to 225 °C.
The TUG 4 monitors two adjustable limit values for each measuring input including broken wire detection. The
device displays the condition of each measuring input. In addition, the freely configurable name of each
measuring input will be displayed, as well as the measured value including the measuring unit. Other analog
inputs (e. g. for thermocouples, pressure sensors, 20 mA sensors) and temperature ranges are available as
options.
The following standard types are available:
• TUG 404 = 4 × Pt 100 temperature measuring inputs
• TUG 408 = 8 × Pt 100 temperature measuring inputs
• TUG 412 = 12 × Pt 100 temperature measuring inputs
• TUG 416 = 16 × Pt 100 temperature measuring inputs
Function
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
The TUG 4 LC-display indicates all measured values including the corresponding name of the measuring input
for 4 (8, 12, 16) Pt 100 temperature sensors (two- or three-wire technology). Each measuring input can be set to
either high limit or low limit monitoring compared to two configurable limits (e.g. pre-alarm and shut-off)
including broken wire detection. The name and value of each measuring input will be displayed in rotation. The
condition of all measuring inputs (switched on/off, alarms) will be displayed at the same time.
It is possible to configure the name of each measuring input and. A temperature offset for Pt100-measuring
inputs (to compensate wire length if two-wire measurement is applied) can be configured as well. Each
measuring input can be individually switched on or off.
An internal test routine cyclically monitors the operational performance of the device. A "Ready for operation"
relay output communicates proper function of the unit. Exeeding the configured limits will enable the two
common alarm relay outputs for threshold 1 and threshold 2 (dry form C contacts).
For the transmission of the measured variables, the TUG 4 can be equipped with interfaces (Siemens DK 3964
for Interpreter RK 512, MOD bus RTU Slave, Profibus DP, CAN bus). Different hardware configurations are
available depending on the interface type (RS-232, RS-485 or TTY).
Alarm messages can be acknowledged by initiating a low to high or a high to low signal at the discrete input
"Acknowledge" (terminals 40/41 or 42/43 depending on model). The alarm will be acknowledged 5 seconds after
the control unit recognizes the signal has been input. Any fault conditions which still exist will result in
reactivation of the alarm in the control unit.

Manual 37303A Temperature Monitoring Unit - TUG 4
Page 20/55 © Woodward
Display
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Standard Display
The first line indicates the name and measured value of the current measuring input. This line will automatically
scroll through all measuring inputs that are switched on. By pressing the "Display" button the scroll mode can be
interrupted and restarted. By pressing the "Man.scroll" button, the display will advance to next measuring input.
If an alarm occurs, the display changes to indicate the all active alarms in the order of occurrence (see "Alarm
Display").
The second line indicates the current conditions of all present measuring inputs with different symbols. The
symbols are described as follows:
No limit exceeded
1 Limit 1 (lower limit) exceeded
2 Limit 2 (upper limit) exceeded
D Wire break occurred
- Measuring input has been switched off
A blinking symbol indicates an alarm, which has not yet been acknowledged. The cursor in the second line
indicates which measuring input is currently displayed in the first line.
These display screens are either displayed automatic scrolling or can be manually advanced by pressing the
"Man. scroll" button.
Alarm Display
If an alarm occurs, the device changes to the alarm display and the auto-scrolling mode will stop. The maximum
temperature measured since the alarm has ocurred will be displayed in °C. In order to clearly indicate that the
temperature shown is not the current temperature but a maximum value, the display alternates between the
current temperature value and the text message "MAX".
The second line indicates the alarm conditions of all measuring inputs by using symbols. A blinking symbol
indicates an alarm, which has not yet been acknowledged. Specific alarm conditions are indicated by the type of
symbol (limit value 1, limit value 2, wire break). However, this does not necessarily correspond to the current
condition of the measuring input. After the alarm has been acknowledged, the display will stop blinking and will
automatically revert to the input’s current status. The cursor in the second line indicates the measuring input
currently being displayed in the first line.
Each single alarm can be acknowledged seperately by using the "Clear" button. To acknowledge the next alarm
(in the order of their occurence), the button "Display↓" must be pressed to advance to the next alarm. After all
alarms have been acknowledged, the display will revert back to the monitoring display.