Woodward ProTech-GII 8237-1594 User manual

®
Product Manual 26709
(Revision F, 10/2016)
Original Instructions
ProTech-GII Overspeed Protection Device
with Voted Inputs
8237-1594, -1595, -1596, -1597, -1598, -1599,
-1600, -1601, -1656, -1660
Installation and Operation Manual

General
Precautions
Read this entire manual and all other publications pertaining to the work to be
performed before installing, 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.
Revisions
This publication may have been revised or updated since this copy was produced.
To verify that you have the latest revision, check manual
26455 , Customer
Publication Cross Reference and Revision Status & Distribution Restrictions, on
the publications page of the Woodward website:
www.woodward.com/publications
The latest version of most publications is available on the publications page. If
your publication is not there, please contact your customer service representative
to get the latest copy.
Proper Use
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.
Translated
Publications
If the cover of this publication states "Translation of the Original Instructions"
please note:
The original source of this publication may have been updated since this
translation was made. Be sure to check manual
26455 , Customer Publication
Cross Reference and Revision Status & Distribution Restrictions, to verify whether
this translation is up to date. Out-of-date translations are marked with . Always
compare with the original for technical specifications and for proper and safe
installation and operation procedures.
Revisions—Changes in this publication since the last revision are indicated by a black line
alongside the text.
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, no responsibility is assumed by Woodward unless otherwise expressly
undertaken.
Manual 26709
Copyright © Woodward, Inc. 2013–2016
All Rights Reserved

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 1
Contents
WARNINGS AND NOTICES............................................................................7
ELECTROSTATIC DISCHARGE AWARENESS ..................................................8
REGULATORY COMPLIANCE ........................................................................9
ACRONYMS AND DEFINITIONS....................................................................12
CHAPTER 1. GENERAL INFORMATION.........................................................13
Description............................................................................................................13
Applications ..........................................................................................................14
CHAPTER 2. INSTALLATION........................................................................17
Introduction...........................................................................................................17
Unpacking.............................................................................................................17
Hardware Installation Procedure ..........................................................................17
Enclosures............................................................................................................18
Module Removal and Installation—Bulkhead Mount Package ............................21
Module Removal and Installation—Panel Mount Package ..................................28
Mounting Location Considerations .......................................................................30
Environmental Specifications ...............................................................................31
Power Supply Requirements................................................................................31
Input/Output Specifications...................................................................................33
Shielded Wiring ....................................................................................................36
Control Wiring Guidelines.....................................................................................37
CHAPTER 3. FUNCTIONALITY .....................................................................52
Introduction...........................................................................................................52
Features................................................................................................................52
Product Models.....................................................................................................56
Inputs and Outputs ...............................................................................................63
Overspeed and Over-Acceleration Detection Logic .............................................66
Start Logic ............................................................................................................68
Test Routines .......................................................................................................71
Alarm and Trip Latches ........................................................................................73
System Logs.........................................................................................................75
ProTech-GII Response Time Performance ..........................................................76
CHAPTER 4. FRONT PANEL INTERFACE......................................................79
Introduction...........................................................................................................79
Screen Layout ......................................................................................................80
Keypad Functions.................................................................................................81
Navigation.............................................................................................................82
Passwords ............................................................................................................83
Monitor Menu........................................................................................................84
View Logs .............................................................................................................95
CHAPTER 5. CONFIGURATION OF THE PROTECH-GII VIA FRONT PANEL ......99
Introduction...........................................................................................................99
Editing Configuration Settings from the Front Panel ............................................99
Configure Menu Page.........................................................................................100
Configuration Procedure.....................................................................................101
CHAPTER 6. TEST ROUTINES...................................................................120
Test Modes Menu...............................................................................................120
Temporary Overspeed Setpoint Test .................................................................121
Auto Simulated Speed Test................................................................................126
Auto-Sequence Test...........................................................................................128

ProTech-GII Overspeed Protection Device Manual 26709
2 Woodward
CHAPTER 7. PROGRAMMING AND CONFIGURATION TOOL..........................131
General ...............................................................................................................131
Installation of the PCT ........................................................................................132
Levels of Operation of the Programming and Configuration Tool (PCT) ...........132
Using the Programming and Configuration Tool (PCT)......................................133
On-Line Menu.....................................................................................................135
Off-Line Menu.....................................................................................................142
Configuration of the ProTech-GII – PCT ............................................................143
On-Line Configuration ........................................................................................144
Off-Line Configuration ........................................................................................147
Configuration Settings – PCT .............................................................................158
ProTech-GII Configuration Checks.....................................................................166
Error Messages and Solutions ...........................................................................168
CHAPTER 8. MODBUS COMMUNICATIONS .................................................169
Introduction.........................................................................................................169
Monitor Only .......................................................................................................169
Monitor and Control ............................................................................................169
Modbus Communication.....................................................................................170
Port Adjustments ................................................................................................170
ProTech-GII Parameter Addresses ....................................................................170
CHAPTER 9. SAFETY MANAGEMENT.........................................................176
Product Variations Certified................................................................................176
Safe State...........................................................................................................176
SIL Specifications ...............................................................................................176
Failure Rate Data................................................................................................177
Response Time Data..........................................................................................177
Limitations...........................................................................................................177
Management of Functional Safety......................................................................178
Restrictions.........................................................................................................178
Competence of Personnel ..................................................................................178
Operation and Maintenance Practice .................................................................178
Installation and Site Acceptance Testing ...........................................................178
Functional Testing after Initial Installation ..........................................................178
Functional Testing after Changes.......................................................................179
Proof Testing (Functional Test) ..........................................................................179
CHAPTER 10. TROUBLESHOOTING ...........................................................180
Introduction.........................................................................................................180
I/O Troubleshooting ............................................................................................181
Trip Indications ...................................................................................................183
Alarm Indications ................................................................................................185
CHAPTER 11. PROTECH-GII CONFIGURATION WORKSHEET......................187
CHAPTER 12. PRODUCT SUPPORT AND SERVICE OPTIONS .......................190
Product Support Options ....................................................................................190
Product Service Options.....................................................................................190
Returning Equipment for Repair.........................................................................191
Replacement Parts .............................................................................................192
Engineering Services..........................................................................................192
Contacting Woodward’s Support Organization ..................................................192
Technical Assistance..........................................................................................193
CHAPTER 13. ASSET MANAGEMENT.........................................................194
Product Storage Recommendations...................................................................194
Refurbishment Period Recommendation ...........................................................194
APPENDIX.MODBUS ETHERNET GATEWAY INFORMATION.........................195
Introduction.........................................................................................................195
B&B Electronics Setup .......................................................................................195

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 3
Lantronix Setup ..................................................................................................198
REVISION HISTORY..................................................................................203
DECLARATIONS.......................................................................................204
The following are trademarks of Woodward, Inc.:
ProTech
Woodward
The following are trademarks of their respective companies:
Modbus (Schneider Automation Inc.)
Illustrations and Tables
Figure 1-1. Typical ProTech-GII Application (Voted Trip Relay Models) .............15
Figure 1-2. Typical ProTech-GII Application (Independent Trip Relay Models)...15
Figure 1-3. Typical Gas Turbine Application (Voted Trip Relay Models) .............16
Figure 2-1. Typical ProTech-GII Bulkhead Package—Front View.......................18
Figure 2-2a. Typical ProTech-GII Bulkhead Package—Front Door Open ...........19
Figure 2-2b. Bulkhead Schematic Showing Front Panel A Connection to Module
A and Front Panel C Connection to Module C—Top View..............19
Figure 2-3. Mounting Outline Diagram for Bulkhead-Mounted Models................20
Figure 2-4a. Typical ProTech-GII Panel Mount Package—Front View................24
Figure 2-4b. Typical ProTech-GII Panel Mount Package—Rear View with
Cover ...............................................................................................24
Figure 2-4c. Typical ProTech-GII Panel Mount Package—Rear View without
Cover Showing Module Orientation.................................................25
Figure 2-4d. Panel Mount Schematic Showing Front Panel A Connection to
Module A and Front Panel C Connection to Module C—Top View.25
Figure 2-5a. Mounting Outline Diagram for Panel-Mount Models........................26
Figure 2-5b. Mounting Outline Diagram for Panel-Mount Models........................27
Figure 2-5c. Panel Cutout Diagram for Panel-Mount Models ..............................28
Figure 2-6. Screw Connection Terminal Block.....................................................37
Figure 2-7. Inside View of ProTech-GII ................................................................39
Figure 2-8. ProTech-GII Control Wiring Diagram.................................................40
Figure 2-9. Trip Module—Included within Voted Trip Relay Units Only...............41
Figure 2-10a. Power Supply Field Wiring Routing & Stress Relief Diagram........41
Figure 2-10b. I/O Wiring Routing & Stress Relief Diagram..................................42
Figure 2-10c. Relay Output Field Wiring Routing & Stress Relief Diagram .........42
Figure 2-11a. Example MPU (Passive Magnetic Pickup Unit) Wiring..................43
Figure 2-11b. Example Proximity Probe (Active Magnetic Pickup Unit) Wiring
(Internal Power) ...............................................................................44
Figure 2-11c. Example Proximity Probe (Active Magnetic Pickup Unit) Wiring
(External Power, Non-preferred) .....................................................44

ProTech-GII Overspeed Protection Device Manual 26709
4 Woodward
Figure 2-11d. Example Eddy Current Probe (Active Magnetic Pickup Unit)
Wiring...............................................................................................44
Figure 2-12a. Example Standard Discrete Input Wiring (Internal Power Option) 45
Figure 2-12b. Example Standard Discrete Input Wiring (External Power
Option) .............................................................................................45
Figure 2-13. Example Analog Output Wiring........................................................46
Figure 2-14a. Example Trip Relay Output Wiring.................................................46
Figure 2-14b. Example Trip Relay Wiring (per Module) (Independent Trip Relay)
(Internal Supply) ..............................................................................47
Figure 2-14c. Example Trip Relay Wiring (per Module) (Independent Trip Relay)
(External Supply) .............................................................................47
Figure 2-14d. Example Trip Relay Wiring (Voted Trip Relay Models) .................48
Figure 2-14e. Example Alarm Relay Wiring (Internal Supply)..............................48
Figure 2-14f. Example Alarm Relay Wiring (External Supply) .............................49
Figure 2-15. Power Supply Relationship Diagram ...............................................50
Figure 2-16a. Serial Port Interface Diagram—RS-232.........................................50
Figure 2-16b. Serial Com Port Interface Diagram—RS-485 ................................51
Figure 2-17. Programming and Configuration Tool Cable/Interface Diagram......51
Figure 3-1. Module Diagram with Speed Redundancy Manager Configured ......54
Figure 3-2. Module Diagram without Speed Redundancy Manager Configured .55
Figure 3-3. Basic Functional Overview of Independent Trip Relay Models .........57
Figure 3-4. Functional Diagram of Single ProTech-GII module with Independent
Trip Relay Outputs...........................................................................58
Figure 3-5. Example TMR Trip Block Assembly Interface ...................................59
Figure 3-6. Basic Functional Overview of Voted Trip Relay Models ....................60
Figure 3-7. Functional Diagram of Single ProTech-GII Module with Voted Trip
Relay Outputs ..................................................................................61
Figure 3-8. Simplex Trip Block Assembly.............................................................62
Figure 3-9. Dual Redundant Trip Block Assembly ...............................................63
Figure 3-10. Over-Acceleration Enabling Diagram...............................................66
Figure 3-11. Start Logic Diagram .........................................................................69
Figure 3-12. Speed Fail Trip Diagram ..................................................................70
Figure 3-13. Speed Fail Timeout Trip Diagram....................................................70
Figure 3-14. Total System Response Time Based on Sensed Frequency Level
for Independent Trip Relay Models when Speed Redundancy
Manager Function is not Configured ...............................................76
Figure 3-15. Total System Response Time Based on Sensed Frequency Level
for Independent Trip Relay Models when Speed Redundancy
Manager Function is Configured .....................................................77
Figure 3-16. Total System Response Time Based on Sensed Frequency Level
for 2oo3 Voted Trip Relay Models when Speed Redundancy
Manager Function is not Configured ...............................................77
Figure 3-17. Total System Response Time Based on Sensed Frequency Level
for 2oo3 Voted Trip Relay Models when Speed Redundancy
Manager Function is Configured .....................................................78
Figure 3-18. Response Time Definition................................................................78
Figure 4-1. ProTech-GII Front Panel....................................................................79
Figure 4-2. ProTech-GII Screen ...........................................................................80
Figure 4-3. ProTech-GII Faceplate.......................................................................81
Figure 4-4. Home screen (with Alarm) .................................................................82
Figure 4-5. Home screen (with Trip).....................................................................82
Figure 4-6. Password Entry Screen......................................................................83
Figure 4-7. Monitor Menu .....................................................................................84
Figure 4-8. Monitor Summary (Page 1)................................................................85
Figure 4-9. Monitor Trip Latch ..............................................................................85
Figure 4-10. Monitor Alarm Latch.........................................................................87
Figure 4-11. Monitor Dedicated Discrete Inputs...................................................88
Figure 4-12. Monitor Speed Input.........................................................................89
Figure 4-13. Speed Redundancy Manager ..........................................................89

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 5
Figure 4-14. Acceleration Redundancy Manager.................................................90
Figure 4-15. Monitor Speed Fail Timer.................................................................90
Figure 4-16. Monitor Analog Output.....................................................................91
Figure 4-17. Monitor Modbus Status ....................................................................92
Figure 4-18. Monitor Date & Time ........................................................................92
Figure 4-19. Set Date & Time...............................................................................93
Figure 4-20. Set Date & Time...............................................................................93
Figure 4-21. Set Date & Time...............................................................................94
Figure 4-22. Monitor System Status.....................................................................94
Figure 4-23. Monitor Module Information .............................................................95
Figure 4-24. Logs Menu .......................................................................................95
Figure 4-25. Overspeed/Over-acceleration Log...................................................96
Figure 4-26. Trip Log ............................................................................................97
Figure 4-27. Alarm Log.........................................................................................97
Figure 4-28. Peak Speed/Accel Log.....................................................................98
Figure 4-29. Reset Logs.......................................................................................98
Figure 5-1. Configure Menu ...............................................................................100
Figure 5-2. Save Configuration ..........................................................................102
Figure 5-3. Configure Language ........................................................................102
Figure 5-4. Configure Speed Submenu..............................................................103
Figure 5-5. Configure Speed Input .....................................................................103
Figure 5-6. Configure Acceleration.....................................................................104
Figure 5-7. Configure Start Logic .......................................................................105
Figure 5-8. Configure Speed Redundancy Manager .........................................106
Figure 5-9. Configure Acceleration Redundancy Manager................................106
Figure 5-10. Configure Trip Latch ......................................................................107
Figure 5-11. Configure Alarm Latch ...................................................................108
Figure 5-12. Configure Dedicated Discrete Submenu .......................................108
Figure 5-13. Configure Start Input Sharing ........................................................109
Figure 5-14. Configure Reset Input Sharing.......................................................109
Figure 5-15. Configure Speed Fail Override Input Sharing................................110
Figure 5-16. Configure Analog Output ...............................................................110
Figure 5-17. Configure Test Modes....................................................................111
Figure 5-18. Configure Auto-Sequence Test......................................................111
Figure 5-19. Configure Modbus..........................................................................112
Figure 5-20. Configure Power Supply Alarms....................................................113
Figure 5-21. Configure Power Supply Alarms....................................................113
Figure 5-22. Configuration Management Menu..................................................114
Figure 5-23. Configuration Overview..................................................................115
Figure 5-24. Configuration Compare..................................................................116
Figure 5-25. Configuration Copy ........................................................................116
Figure 5-26. Configuration Copy ........................................................................117
Figure 5-27. Password Change..........................................................................118
Figure 6-1. Test Modes Menu ............................................................................120
Figure 6-2a. Temporary Overspeed Test...........................................................121
Figure 6-2b. Temporary Overspeed Test...........................................................122
Figure 6-3. Manual Simulated Speed Test.........................................................123
Figure 6-4. Test Frequency Resolution ..............................................................124
Figure 6-5. Manual Simulated Speed Test Screen ............................................124
Figure 6-6. Auto Simulated Speed Test Screen.................................................126
Figure 6-7. Auto Sequence Test ........................................................................128
Figure 6-8. Lamp Test ........................................................................................129
Table 1-1. Available ProTech-GII Models ............................................................14
Table 2-1a. Low Voltage Input Specifications ......................................................31
Table 2-1b. High Voltage Input Specifications .....................................................31
Table 2-1c. Low Voltage Input Specifications ......................................................32
Table 2-2 Relay Output Power Supply Specifications..........................................32
Table 2-3. General I/O Specifications ..................................................................33

ProTech-GII Overspeed Protection Device Manual 26709
6 Woodward
Table 2-4a. Passive Probe Specifications............................................................33
Table 2-4b. Active Probe Specifications...............................................................34
Table 2-5a. Independent Trip Relay Specifications..............................................34
Table 2-5b. Voted Trip Relay Specifications ........................................................35
Table 2-6. Alarm Relay Specifications .................................................................35
Table 2-7. Dedicated Discrete Input Specifications..............................................35
Table 2-8. Analog Output Specifications ..............................................................36
Table 2-9. Serial Port Specifications ....................................................................36
Table 6-1. Simulated Speed Resolution.............................................................123
Table 7-1. Service Port Specifications ...............................................................131
Table 8-1. Supported Modbus Function Codes..................................................170
Table 8-2. Modbus Serial Communication Port Settings ...................................170
Table 8-3. Boolean Write Addresses (Code 05).................................................172
Table 8-4. Boolean Read Addresses (Code 02) ................................................174
Table 8-5. Analog Read Addresses (Code 04) ..................................................175
Table 9-1. Trip Relay Safe State Configuration..................................................176
Table 9-2. SIL Specifications..............................................................................177
Table 9-3. Failure Rate.......................................................................................177
Table 10-1. I/O Troubleshooting.........................................................................183
Table 10-2. Trip Indications ................................................................................184
Table 10-3. Alarm Indications.............................................................................186

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 7
Warnings and Notices
Important Definitions
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER—Indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING—Indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION—Indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE—Indicates a hazard that could result in property damage only
(including damage to the control).
IMPORTANT—Designates an operating tip or maintenance suggestion.
Overspeed /
Overtemperature /
Overpressure
The engine, turbine, or other type of prime mover should be
equipped with an overspeed shutdown device to protect against
runaway or damage to the prime mover with possible personal injury,
loss of life, or property damage.
The overspeed shutdown device must be totally independent of the
prime mover control system. An overtemperature or overpressure
shutdown device may also be needed for safety, as appropriate.
Personal Protective
Equipment
The products described in this publication may present risks that
could lead to personal injury, loss of life, or property damage. Always
wear the appropriate personal protective equipment (PPE) for the job
at hand. Equipment that should be considered includes but is not
limited to:
Eye Protection
Hearing Protection
Hard Hat
Gloves
Safety Boots
Respirator
Always read the proper Material Safety Data Sheet (MSDS) for any
working fluid(s) and comply with recommended safety equipment.
Start-up
Be prepared to make an emergency shutdown when starting the
engine, turbine, or other type of prime mover, to protect against
runaway or overspeed with possible personal injury, loss of life, or
property damage.
Battery Charging
Device
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.

ProTech-GII Overspeed Protection Device Manual 26709
8 Woodward
Electrostatic Discharge Awareness
Electrostatic
Precautions
Electronic controls contain static-sensitive parts. Observe the
following precautions to prevent damage 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.
To prevent damage to electronic components caused by improper
handling, read and observe the precautions in Woodward manual
82715 , Guide for Handling and Protection of Electronic Controls,
Printed Circuit Boards, and Modules.
Follow these precautions when working with or near the control.
1. 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.
2. 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:
Do not touch any part of the PCB except the edges.
Do not touch the electrical conductors, the connectors, or the
components with conductive devices 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.

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 9
Regulatory Compliance
European Compliance for CE Marking
EMC Directive: Declared to Directive 2014/30/EU of the European Parliament and of
the Council of 26 February 2014 on the harmonization of the laws of
the Member States relating to electromagnetic compatibility (EMC)
Low Voltage Directive: Directive 2014/35/EU on the harmonisation of the laws of the Member
States relating to the making available on the market of electrical
equipment designed for use within certain voltage limits
ATEX – Potentially Explosive
Atmospheres Directive: Directive 2014/34/EU on the harmonisation of the laws of the Member
States relating to equipment and protective systems intended for use
in potentially explosive atmospheres
Zone 2, Category 3, Group II G, Ex nA IIC T4 X
Other European Compliance
Compliance with the following European Directives or standards does not qualify this product for
application of the CE Marking:
RoHS Directive: Exempt from 2002/95/EC of the European Parliament and of the
Council of 27 January 2003 on the restriction of the use of certain
hazardous substances in electrical and electronic equipment. Exempt
per Annex IA of Directive 2002/95/EC referring to "monitoring and
control instruments" within the meaning of Category 9.
WEEE Directive: Exempt/Compliant as a component with 2002/96/EC of the European
Parliament and of the Council of 27 January 2003 on waste electrical
and electronic equipment (WEEE).
EuP Directive: Exempt/Compliant from 2009/125/EC of the European Parliament
and of the Council of 21 October 2009 establishing a framework for
the setting of ecodesign requirements for energy-related products.
North American Compliance
CSA: Certified for Class I, Division 2, Groups A, B, C, and D, T4 at 60 °C
Ambient for use in the United States and Canada.
Certificate 160584-2217246
Other International Compliance
C-Tick:Declared to Australian Radiocommunications Act of 1992 and the
New New Zealand Radiocommunications Act of 1989.
TÜV: TÜV certified for SIL-3 per IEC 61508 Parts 1-7, Functional Safety of
Electrical / Electronic / Programmable Electronic Safety Related
Systems.
Other Compliance
Gas Corrosion: IEC60068-2-60:1995 Part 2.60 Methods 1 and 4 (conformal coating)
Machinery Protection: API670, API612, & API-611 compliant

ProTech-GII Overspeed Protection Device Manual 26709
10 Woodward
Special Conditions for Safe Use
This Equipment is Suitable for use in Class I, Division 2, Groups A, B, C, D or
Non Hazardous Locations Only.
This equipment is suitable for use in European Zone 2, Group IIC environments
or Non Hazardous Locations Only.
Wiring must be in accordance with North American Class I, Division 2, or
European Zone 2, Category 3 wiring methods as applicable, and in accordance
with the authority having jurisdiction.
A fixed wiring installation is required and a switch or circuit breaker shall be
included in the building installation that is in close proximity to the equipment and
within easy reach of the operator and that is clearly marked as the disconnecting
device for the equipment. The switch or circuit breaker shall not interrupt the
protective earth conductor.
Protective Earth Grounding is required by the input PE terminal.
Field wiring must be rated at least 85 °C for operating ambient temperatures
expected to exceed 50 °C.
For European ATEX compliance on panel mount models, this equipment must be
installed in an area providing adequate protection against the entry of dust or
water. A minimum ingress protection rating of IP54 is required for the enclosure.
Personnel must discharge their electrostatic build up to the cabinet ground point
or use an ESD strap prior to touching the ProTech interior surfaces if the
engine/turbine is operational. The unit is designed to have one of three modules
be removed during operation; however ESD to the remaining operational
modules may cause signal deviations. Signal deviations due to direct ESD may
be large enough to result in the operational module to trip, shutting down the
engine since two modules are in a tripped mode. Signal deviations were noted
when ESD testing was done to the Speed pins, the IRIG-B pins, Service Port
pins, and RS-232/RS-485 Modbus communications port pins.
Do not remove module unless module is de-energized and all wire
connections have been disconnected
The Service Port (RS-232 communication) is not designed to remain connected
during operation except at servicing and programming intervals. It should not
have a cable connected to it other than during programming and servicing.
This device contains a single cell primary battery. This battery is not to be
charged and is not customer replaceable.
Control is suitable for installation in pollution degree 2 environments.
Measurement inputs are classified as permanently connected IEC
measurement Category I and are designed to safely withstand
occasional transient overvoltages up to 1260 Vpk. To avoid the
danger of electric shock, do not use these inputs to make
measurements within measurement categories II, III, or IV.

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 11
Explosion Hazard—Do not connect or disconnect while circuit is live
unless area is known to be non-hazardous.
Substitution of components may impair suitability for Class I,
Division 2 or Zone 2 applications.
Risque d’explosion—Ne pas raccorder ni débrancher tant
que l’installation est sous tension, sauf en cas l’ambiance
est décidément non dangereuse.
La substitution de composants peut rendre ce matériel
inacceptable pour les emplacements de Classe I,
applications Division 2 ou Zone 2.
Safety Symbols
Both direct and alternating current
Alternating current
Direct current
Caution, risk of electrical shock
Caution, refer to accompanying documents
Protective conductor terminal
Frame or chassis terminal

ProTech-GII Overspeed Protection Device Manual 26709
12 Woodward
Acronyms and Definitions
2oo3 2-out-of-3
Block Identifier The identifier used for each logic block for configuration
purposes (Chapter 9)
CAN Controller Area Network
DC Diagnostic Coverage
DCS Distributed Control System
Module Functionality contained within one of the three identical
sections
MPU Magnetic Pick-up
PC Personal Computer or laptop with Windows operating
system
PCT Programming and Configuration Tool
PFD Probability of Failure on Demand
PFH Probability of dangerous Failure per Hour
PLC Programmable Logic Controller
PROX Proximity Probe
RTU Remote Terminal Unit
Settings-File A file that contains the configuration settings loaded with the
ProTech Programming and Configuration Tool (.wset).
GII ProTech Overspeed Protection Device

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 13
Chapter 1.
General Information
Description
The ProTech-GII is an overspeed safety device designed to safely shut down
steam, gas, and hydro turbines of all sizes upon sensing an overspeed or over-
acceleration event. This device accurately monitors turbine rotor speed and
acceleration via active or passive MPUs (magnetic pickups) and issues a
shutdown command to the turbine’s trip valve(s) or corresponding trip system.
The ProTech-GII consists of three independent modules whose trip outputs,
dependent upon model used, are either independent or voted in a 2-out-of-3
configuration. An isolated bus architecture is used to share all inputs and latch
status information between the three modules. Optionally each ProTech-GII
module can be configured to use only its sensed “local” input signals or the voted
result of all three modules’ signals in its event latch decision logic. Optionally
module trip and alarm latch statuses can also be configured to be shared with all
other modules.
The ProTech-GII includes Overspeed and Over-acceleration functions as well as
time stamped Alarm, and Trip logs. Indication that a test was active at the time of
the event is provided on all logs and first-out indications are provided for Trip
logs. The ProTech-GII also provides various pre-defined test routines including
an automated periodic test routine to assist users with verifying system
operation.
There are several ways to interface with the ProTech-GII. The front panel allows
the user to view current values, and to perform configuration and test functions.
All of the features and most of the information available from the front panel are
also accessible via the Modbus interface. Finally, the Programming and
Configuration Tool (PCT) is software that is run on a PC to download log files
and manage settings files.
This product is designed for critical applications and when installed correctly
complies with standards API-670, API-612, API-611, and IEC61508 (SIL-3).
The following table shows the various hardware configurations (mounting
options, power supplies, and trip relay options) available:

ProTech-GII Overspeed Protection Device Manual 26709
14 Woodward
Part Number Description
8237-1594 ProTech-GII—Bulkhead Mount, HV/LV, Ind Relay, Voted Inputs
8237-1598 ProTech-GII—Panel Mount, HV/LV, Ind Relay, Voted Inputs
8237-1595 ProTech-GII—Bulkhead Mount, HV/HV, Ind Relay, Voted Inputs
8237-1599 ProTech-GII—Panel Mount, HV/HV, Ind Relay, Voted Inputs
8237-1596 ProTech-GII—Bulkhead Mount, HV/LV, Voted Relays, Voted Inputs
8237-1600 ProTech-GII—Panel Mount, HV/LV, Voted Relays, Voted Inputs
8237-1597 ProTech-GII—Bulkhead Mount, HV/HV, Voted Relays, Voted Inputs
8237-1601 ProTech-GII—Panel Mount, HV/HV, Voted Relays, Voted Inputs
8237-1656 ProTech-GII—Bulkhead Mount, HV/HV, Voted Relays, Voted Inputs – Limited
Functions
8237-1660 ProTech-GII—Panel Mount, HV/HV, Voted Relays, Voted Inputs – Limited Functions
5437-1126 Spare Module for 8237-1594, 8237-1598
5437-1127 Spare Module for 8237-1595, 8237-1599
5437-1124 Spare Module for 8237-1596, 8237-1600
5437-1125 Spare Module for 8237-1597, 8237-1601
Table 1-1. Available ProTech-GII Models
Applications
The ProTech-GII is designed to be applied as an overspeed device for any size
steam, gas, or hydro turbine, reciprocating engine, or plant process equipment.
The device's fast response time (8–26 milliseconds depending on model and
configuration), 0.5 to 32 000 rpm speed range, and integrated overspeed and
acceleration detection/protection functionality, make it ideal for application on
critical low-speed or high-speed rotating motors, compressors, turbines or
engines. This device accepts one speed (MPU or PROX) input per module
(3 total). In addition to the trip relay outputs, each ProTech-GII module provides
one relay output that is dedicated to an alarm function (3 total) and one analog
speed output (3 total).
The ProTech-GII utilizes a triple modular redundant architecture and 2-out-of-3
voting logic to accurately determine unsafe conditions and ensure that no single-
point failure will affect system reliability or availability. With this design, failures in
overspeed system components (switches, transducers, modules) are detected,
annunciated, and allowed to be repaired or replaced while the monitored system
continues to operate on-line. Optionally the ProTech-GII can be configured to
share and vote on all speed inputs as required by the application, The ProTech-
GII is designed for critical applications where both personnel safety and unit
availability (operation run time) is a concern or necessity.
The ProTech-GII is certified as an IEC61508 SIL-3 (Safety Integrity Level 3)
safety device and can be applied as a stand-alone IEC61508-based device or
within an IEC61511-based plant safety system.

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 15
Figure 1-1. Typical ProTech-GII Application (Voted Trip Relay Models)
Figure 1-2. Typical ProTech-GII Application (Independent Trip Relay Models)

ProTech-GII Overspeed Protection Device Manual 26709
16 Woodward
Figure 1-3. Typical Gas Turbine Application (Voted Trip Relay Models)

Manual 26709 ProTech-GII Overspeed Protection Device
Woodward 17
Chapter 2.
Installation
Introduction
This chapter provides instructions on how to mount and connect the ProTech-GII
overspeed safety device into a system. Hardware dimensions, ratings, and
jumper configurations are given to allow a customer to mount, wire, and
configure the ProTech-GII package to a specific application.
Electrical ratings, wiring requirements, and options are provided to allow for full
integration of the ProTech-GII into a new or existing application.
Unpacking
Before opening the shipping packaging, inspect the shipping container for
damage and document any damage.
Be careful when opening and removing the shipping container. You may retain
the original shipping container for unit storage or return shipping for suggested
refurbishment. (See Asset Management chapter for storage details.)
Be careful when unpacking the ProTech-GII system from the shipping container.
The precautions called out in the Electrostatic Discharge Awareness section
should be followed during unpacking, handling, installation and operation during
maintenance.
Once removed from the shipping packaging, check the device for signs of
damage such as a bent or dented case and loose or broken parts. If damage is
found, notify the shipper immediately.
Hardware Installation Procedure
1. Read and understand this manual completely before proceeding.
2. Create a site specific wiring diagram by referencing included wiring
diagrams and constraints. Then perform mechanical and electrical
installation following this chapter’s instructions.
3. Visual inspection
a. Verify that all mounting hardware is tightened and that no wires are
pinched.
b. Verify that no wiring insulation is nicked or abraded.
c. Verify that all terminal blocks are installed and terminal screws are
tight. Follow control wiring instructions for all terminal blocks.
d. If used, verify that speed sensors have been correctly installed, and
have the correct clearance from the speed gear. Adjust if necessary.
See manual 82510, Magnetic Pickups and Proximity Switches for
Electronic Governors.
4. Apply power to each module, one at a time, and verify that each module
boots up and its front panel screen displays turbine or equipment speed.
5. Enter the configuration mode and configure all settings to the specific
application’s requirements.

ProTech-GII Overspeed Protection Device Manual 26709
18 Woodward
6. Perform a full system checkout by verifying that all system trips, alarms, and
test routines function correctly before starting the machinery/system.
7. When ready, start the turbine/machinery, following the equipment
manufacturer’s recommended starting procedure.
Enclosures
Module identification is always from left to right, with module A on
the left, module B in the center, and module C on the right. This
applies to either the bulkhead-mount versions with the front cover
open, or the panel-mount versions with the back cover removed.
Depending on the model purchased, the ProTech-GII has either a bulkhead-
mounted or a panel-mounted enclosure package.
The bulkhead-mounted enclosure models are designed to be mounted on a wall
or skid next to the turbine or equipment and are rated for IP56-based
environments. With these models, field wiring access is through gland plates
located on the bottom of the enclosure. Figures 2-1, 2-2, and 2-3 display the
bulkhead-mounted ProTech-GII model’s physical layout and mounting pattern.
The ProTech-GII panel-mounted enclosure models are designed for installation
in a control room panel or cabinet and, by itself, cannot be bulkhead-mounted.
Once installed within an IP56 rated panel or cabinet, the ProTech-GII panel-
mounted models are rated for IP56-based environments. A gasket is attached to
the rear side of the package’s bezel to properly seal the ProTech-GII control’s
face-plate and around the mounting studs to a panel. With these models, field
wiring access is located on the ProTech-GII control’s back side, and a back cover
is included to protect wiring terminals after installation. Figures 2-4 and 2-5
display the Panel-Mount ProTech-GII model’s layout and mounting pattern.
Figure 2-1. Typical ProTech-GII Bulkhead Package—Front View