Woodward TG-10E User manual

Installation and Operation Manual
TG-10E, -13E, and –17E Actuator
Manual 04045 (Revision E)

WARNINGS
FOLLOW INSTRUCTIONS—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.
OUT-OF-DATE PUBLICATION—This publication may have been revised or updated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:
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:
www.woodward.com/publications
If your publication is not there, please contact your customer service representative
to get the latest copy.
OVERSPEED PROTECTION—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.
CAUTIONS
BATTERY CHARGING—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.
ELECTROSTATIC DISCHARGE—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.
IMPORTANT DEFINITIONS
WARNING—indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION—indicates a potentially hazardous situation which, 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 Governor Company reserves the right to update any portion of this publication at any time. Information
provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is
assumed by Woodward Governor Company unless otherwise expressly undertaken.
© Woodward 1982
All Rights Reserved

Manual 04045 TG-10E/-13E/-17E Actuator
Woodward i
Contents
CHAPTER 1. GENERAL INFORMATION...........................................................1
Introduction.............................................................................................................1
Description..............................................................................................................1
Optional Actuators..................................................................................................1
References.............................................................................................................2
Regulatory Compliance..........................................................................................2
Regulatory Compliance..........................................................................................2
CHAPTER 2. ELECTROSTATIC DISCHARGE AWARENESS...............................3
CHAPTER 3. INSTALLATION..........................................................................4
Introduction.............................................................................................................4
Receiving................................................................................................................4
Storage...................................................................................................................4
Drive Shaft Rotation ...............................................................................................4
Installation ..............................................................................................................5
Linkage Attachments..............................................................................................6
Heat Exchanger Installation (optional) ...................................................................6
When is a Heat Exchanger Necessary? ................................................................7
Oil Supply ...............................................................................................................7
CHAPTER 4. OPERATION AND ADJUSTMENTS.............................................14
Introduction...........................................................................................................14
Initial Operation ....................................................................................................14
Cleaning the Filter Screens and The Pilot-Valve Plunger Orifice ........................15
Calibration Procedure...........................................................................................17
CHAPTER 5. PRINCIPLES OF OPERATION ...................................................22
Introduction...........................................................................................................22
Component Operation..........................................................................................22
Operation of the TG Actuator...............................................................................24
CHAPTER 6. TROUBLESHOOTING...............................................................27
Introduction...........................................................................................................27
Visual Inspection ..................................................................................................27
CHAPTER 7. REPLACEMENT PARTS ...........................................................30
CHAPTER 8. SERVICE OPTIONS .................................................................32
Product Service Options.......................................................................................32
Returning Equipment for Repair...........................................................................33
Replacement Parts...............................................................................................34
How to Contact Woodward...................................................................................34
Engineering Services ...........................................................................................35
Technical Assistance............................................................................................36

TG-10E/-13E/-17E Actuator Manual 04045
ii Woodward
Illustrations and Tables
Figure 1-1. TG Actuator..........................................................................................ii
Figure 3-1. Recommended Terminal Shaft Travel.................................................6
Figure 3-2. Heat Exchanger Piping Connections...................................................7
Figure 3-3. TG Actuator Outline Drawing.............................................................11
Figure 3-4. TG-13E/-17E Outline Drawing...........................................................12
Figure 3-5. TG-13E/-17E Outline Drawing...........................................................13
Figure 4-1. TG Actuator with Cover Removed.....................................................16
Figure 4-2. Wiring Diagram for Actuator Calibration Circuit.................................18
Figure 5-1. TG Actuator Schematic Diagram.......................................................25
Figure 6-1. Actuator Test Circuit ..........................................................................28
Figure 7-1. TG Exploded View .............................................................................31
Table 3-1. Oil Chart..............................................................................................10
Table 3-2. Viscosity Comparisons........................................................................10
Table 6-1. TG Actuator Troubleshooting..............................................................29
Figure 1-1. TG Actuator
Oil Filter
Electrical
Connector
Oil Drain
Plug
Oil Breather/
Filler Cap
Terminal Shaft/
Output Shaft
Oil Sight
Glass

Manual 04045 TG-10E/-13E/-17E Actuator
Woodward 1
Chapter 1.
General Information
Introduction
This manual 04045 provides general information, installation, operation,
principles of operation, and troubleshooting for the Woodward TG-10E,
TG-13E, and TG-17E Actuators.
All actuators have the same mounting pad, drive shaft configuration, and terminal
shafts.
Rated work capacity is 10 lb-ft (14 Nxm) for the TG-10E and 13 lb-ft (18 Nxm) for
the TG-13E, both with 150 psi (1034 kPa) internal operating oil pressure. The
TG-17E offers 18 lb-ft (24 Nxm) rated work capacity with higher 200 psi (1379
kPa) oil operating pressure.
Maximum terminal shaft travel for the TG-10E is 30 degrees, and 40 degrees for
the TG-13E/-17E. Recommended travel from “NO LOAD” to “FULL LOAD” is 2/3
of maximum terminal shaft travel, or 20 degrees for the TG-10E, and 30 degrees
for the TG-13E/-17E. (See Figure 3-1, Recommended Terminal Shaft Travel.)
The internal pump is sized to operate over standard speed ranges: 1100 to 2400
rpm; 2400 to 4000 rpm; 4000 to 6000 rpm. The actuator is built for the speed
range specified by the customer. The high-speed actuator (4000 to 6000 rpm)
may require a heat exchanger in some applications. (See Chapter 3, When is a
Heat Exchanger Necessary?)
All other operating features and specifications of the TG actuators are the same
for each model.
Description
The TG actuator is a self-contained, proportional, electrohydraulic actuator used
for the positioning of valves. It can be used with all available Woodward
integrating electronic controls and accessories.
The TG proportional electrohydraulic actuator is a transducer which converts a
given electrical signal to a corresponding proportional angular output shaft
position to control the flow of steam or energy medium to the turbine. The
actuator is controlled by an external signal from an integrating amplifier. The
control signal must be unidirectional dc, thereby proportionally increasing the
mechanical output position. The exact control used depends upon the operating
scheme of the installation. Control assemblies are available to control speed,
frequency, load, pressure, and other variables.
Optional Actuators
A TG actuator is available which does not require a drive from the turbine (Figure
3-4). It uses an external, customer-supplied, hydraulic source and can be located
in a convenient location to operate the steam valve linkage.

TG-10E/-13E/-17E Actuator Manual 04045
2 Woodward
Also available is an electric motor-driven TG actuator (Figure 3-5) which can be
mounted in a convenient location and does not require a mechanical drive from
the turbine or an external oil supply.
A UL Listed TG (Class I, Division 2, Groups B, C, and D), is also available for
use in hazardous areas.
References
The following Woodward publications may prove useful:
Number Title
04044 Product Specification, TG-13E & -17E Actuator
25071 Oils for Hydraulic Controls
25075 Commercial Preservation Packaging for Storage of Mechanical-
Hydraulic Controls
36641 Governor Oil Heat Exchanger
50055 Service Bulletin, TG Actuators. Transducer Tightness Check
Regulatory Compliance
The TG Actuator is suitable for use in Class I, Division 2, Groups B, C, and D per
UL for the US or non-hazardous locations only. These listings are limited only to
those units bearing the UL logo.
Wiring must be in accordance with North American Class I, Division 2 wiring
methods as applicable, and in accordance with the authority having jurisdiction.
For use in NEC Class 2 circuits, 30 volts maximum.
WARNING—EXPLOSION HAZARD
Do not remove covers or connect/disconnect electrical connectors unless
power has been switched off or the area is known to be non-hazardous.
Substitution of components may impair suitability for Class I, Division 2.
AVERTISSEMENT—RISQUE D’EXPLOSION
Ne pas enlever les couvercles, ni raccorder/débrancher les prises électriques,
sans vous en assurez auparavant que le système a bien été mis hors tension; ou
que vous vous situez bien dans une zone non explosive.
La substitution de composants peut rendre ce matériel inacceptable pour
les emplacements de Classe I, Division 2.
Regulatory Compliance
European Compliance:
Machinery Directive: Compliance as a component with 98/37/EC
COUNCIL DIRECTIVE of 23 July 1998 on the
approximation of the laws of the Member States
relating to machinery.
North American Compliance:
UL: UL Listed for Class I, Division 2, Groups B, C, & D.
For use in the United States.
UL File E158654

Manual 04045 TG-10E/-13E/-17E Actuator
Woodward 3
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. 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.
CAUTION—ELECTROSTATIC DISCHARGE
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.

TG-10E/-13E/-17E Actuator Manual 04045
4 Woodward
Chapter 3.
Installation
Introduction
This chapter describes receiving, storage, and installation requirements for the
TG actuator.
Use care while handling and installing the TG actuator. Be particularly careful to
avoid striking the drive shaft, terminal shafts, or the electrical connector. Abuse
can damage seals, internal parts, and factory adjustments. Do not rest the
actuator on its drive shaft.
Receiving
The TG actuator is shipped from the factory boxed and bolted to a wooden
platform in the vertical position. The oil sight gauges are factory installed on the
sides of the case, and a breather/filler cap is positioned on the cover for vertical
or horizontal actuator mounting and operation.
After factory testing and adjusting, the TG actuator is drained of oil, sealed, and
painted. This leaves a light film of oil covering internal parts to prevent rust.
External shafts are coated with a spray lubricant. No internal cleaning or flushing
is necessary before installation and operation.
Storage
The TG actuator may be stored for short periods of time as received from the
factory. For long-term storage, storage in an environment with large temperature
changes , humid or corrosive atmosphere, etc., or if the actuator is installed on
the turbine for storage, fill the actuator with oil and follow preservation packaging
instructions in Woodward manual 25075, Commercial Preservation Packaging
for Storage of Mechanical-Hydraulic Controls.
If the breather/filler cap has been set for horizontal governor operation and the
actuator is to be stored vertically, replace the cap with a plug before filling it with
oil to prevent oil from draining through the vent hole.
Drive Shaft Rotation
The actuator rotation is single rotation only. When looking at the actuator from
the top, the direction of rotation must be the same as the turbine shaft or the
electric motor driving the oil pump. The arrows on the actuator base indicate the
actual direction of rotation, when viewing in that plane. Use the following
procedure to change the direction of rotation of the oil pump:
1. Remove the four pump housing screws.
2. Rotate the pump housing assembly 180 degrees.
3. Align the arrows on the pump housing with the pointer on the actuator case.
The arrows indicate the actual pump drive shaft rotation.

Manual 04045 TG-10E/-13E/-17E Actuator
Woodward 5
4. Replace the four screws and torque to 80 lb-in (9.0 Nxm).
5. Make sure that the pump drive shaft rotates freely.
Maintenance of the TG actuator is minimal due to few moving parts,
weatherproof design, and self-contained oil supply. The pump drive shaft
operates a Gerotor-type oil pump. Internal oil pump pressure is regulated by a
relief valve/accumulator. An oil sight glass is installed on both sides of the
actuator case for checking oil condition and oil level.
Installation
The actuator can be installed either vertically or horizontally. Installation is called
vertical or horizontal if the drive shaft is in a vertical or horizontal position when
viewing the actuator installed on its mounting base. Due to gravitational forces on
the transducer and resulting calibration shift, the actuator should be ordered from
the factory for horizontal or vertical installation. Changing the actuator from
horizontal to vertical installation, or vice versa, requires a recalibration of the
actuator. See Chapter 4, Calibration Procedure with Actuator on a Test Stand
OR Calibration Procedure with Actuator on the Turbine.
The breather/filler cap is factory installed on the cover for shipping. For horizontal
operation, the cap and drain plug must be moved to the alternate positions. This
places the servo-piston on the bottom, keeping it completely immersed in oil and
preventing air from being trapped in the servo. See Figure
3-3 (Outline Drawing) for alternate cap and plug positions as well as actuator
mounting hole locations and hole sizes.
NOTE
For horizontal operation, the TG actuator must be installed with the oil sight
gauge at the top of the actuator.
Make sure that there is adequate clearance for attaching the steam valve linkage
and electrical connector and for performing oil maintenance.
The actuator requires 1/2 hp (373 W) maximum to turn the oil pump drive shaft at
rated speed. A decal label on the side of the case indicates the direction of
rotation when the unit was shipped from the factory.
CAUTION—DRIVE ROTATION DIRECTION
Be sure turbine drive and actuator drive rotation are the same. Incorrect
drive rotation may cause actuator damage.
Make sure the drive shaft turns freely before installing the TG actuator. Mount
the actuator squarely on the mounting pad, installing the correct length coupling
with a number 5 Woodruff key. A gasket between the actuator and mounting pad
may be used. There must be no binding, side loading, or backlash in the oil
pump drive. Improper alignment or too tight of a fit between parts can result in
excessive wear or seizure. There must be no force pushing the pump drive shaft
into the actuator. The actuator must slide onto the mounting pad by its own
weight without having to apply force. Tighten the four actuator mounting bolts
equally.

TG-10E/-13E/-17E Actuator Manual 04045
6 Woodward
Linkage Attachments
The terminal shaft extends from both sides of the case and provides 30 degrees
of travel for the TG-10E and 40 degrees of travel for the TG-13E/-17E.
Recommended travel from “NO LOAD” to “FULL LOAD” is 2/3 of maximum
terminal shaft travel (Figure 3-1).
Figure 3-1. Recommended Terminal Shaft Travel
WARNING—OVERTRAVEL
Be sure to allow sufficient overtravel at each end of the terminal shaft so
that the actuator can shut down the turbine and also give maximum steam
flow when required.
Installed linkages must operate smoothly, free of binding. If there is a collapsible
member in the linkage, be sure that it does not yield each time the actuator
moves the linkage rapidly.
Adequate locking methods must be used on the linkage connections. The
terminal shaft must have a 0.625-36 serration to clamp to the output shaft of the
governor.
Heat Exchanger Installation (optional)
If it is necessary to install a heat exchanger, mount it below actuator oil level in
order to prevent overflow of oil through the actuator breather/filler cap. Flush the
heat exchanger before installation with the same grade and type of oil selected
for the TG (see information on Oil Supply below) to remove possible oxidation.