Woodward 2301 User manual

Product Manual 82503
(Revision D)
Original Instructions
2301 Frequency Sensor
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 26311 , Revision Status &
Distribution Restrictions of Woodward Technical Publications, 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 26311 , Revision Status &
Distribution Restrictions of Woodward Technical Publications, 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 Out-of-date translations are marked with .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.
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. Copyright © Woodward 1969
All Rights Reserved

Manual 82503 2301 Frequency Sensor
Woodward i
Contents
WARNINGS AND NOTICES............................................................................ II
ELECTROSTATIC DISCHARGE AWARENESS ..................................................III
CHAPTER 1. 2301 FREQUENCY SENSOR......................................................1
2301 Electric Governor...........................................................................................1
2301 Frequency Sensor.........................................................................................2
CHAPTER 2. PRODUCT SUPPORT AND SERVICE OPTIONS.............................5
Product Support Options........................................................................................5
Product Service Options.........................................................................................5
Returning Equipment for Repair.............................................................................6
Replacement Parts.................................................................................................6
Engineering Services..............................................................................................7
Contacting Woodward’s Support Organization ......................................................7
Technical Assistance..............................................................................................8
Illustrations and Tables
Figure 1-1. Schematic Diagram..............................................................................3
Figure 1-2. Typical Plant Wiring Diagram...............................................................3
Figure 1-3. Bottom View.........................................................................................4
Figure 1-4. Outline Drawing....................................................................................4

2301 Frequency Sensor Manual 82503
ii Woodward
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.
Automotive
Applications
On- and off-highway Mobile Applications: Unless Woodward's control
functions as the supervisory control, customer should install a
system totally independent of the prime mover control system that
monitors for supervisory control of engine (and takes appropriate
action if supervisory control is lost) to protect against loss of engine
control with possible personal injury, loss of life, or property damage.

Manual 82503 2301 Frequency Sensor
Woodward iii
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.
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.

2301 Frequency Sensor Manual 82503
iv Woodward

Manual 82503 2301 Frequency Sensor
Woodward 1
Chapter 1.
2301 Frequency Sensor
2301 Electric Governor
The 2301 electric governor is one in which its actuator output (terminal) shaft
position is directly proportional to the input signal from its electric control unit. It
can be used in an isochronous (constant speed) mode for single-engine
operation or when paralleled with similar units on an isolated bus. It can also be
used in droop mode for paralleling dissimilar units or operating on an infinite bus.
The 2301 governor is used in the same type of service as many other governor
models. It is particularly well suited, when used with some types of proportional
actuators, to engines operated in tandem to drive a common load. In such
installations, one electric control is used to furnish the same input signal to the
proportional actuator on each engine. Since each actuator receives the same
position, it gives each engine the same amount of fuel.
The 2301 electric governor consists of an electric control unit, a speed-setting
potentiometer, and a hydraulic actuator. It may include various control functions
such as frequency sensing, load sensing, speed sensing, and acceleration and
deceleration rate control (ramp generator). Each function is usually on a separate
chassis. The electric control receives the input signals. Its output serves as the
input signal to the actuator. The actuator output controls the flow of energy
medium to the prime mover. The speed setting potentiometer, used to adjust
speed settings, provides one of the inputs to the electric control.
The operation of the 2301 type governor is different and distinct from other
electric governors. The steady-state output of the electric control is a level of
voltage determined by the actuator terminal shaft position required to maintain a
particular load on the prime mover. The voltage is always the same polarity. This
type of control unit requires an actuator in which the output shaft takes a position
proportional to the voltage of the input signal.
In contrast, the electric control unit of the EG series electric governor emits a
nominally zero signal during conditions of on-speed, steady-state operation, and
a larger voltage signal only during off-speed or load-changing periods. In this
type of system, the direction of actuator operation depends on signal polarity.
As is the case with any type governor, the prime mover should be equipped with
a separate overspeed device to prevent runaway if a failure should render the
governor inoperative.

2301 Frequency Sensor Manual 82503
2 Woodward
2301 Frequency Sensor
The 2301 frequency sensor is a device used to convert the frequency of the
alternator output of an engine generator set into a dc voltage proportional to
engine speed. This dc voltage is used as a speed signal to a 24 Vdc amplifier.
Frequency sensor models are built for use on 50 Hz., 60 Hz, and 210 Hz.
machines.
Operation
Refer to Figure 1-1. An ac voltage, taken directly from the alternator or from the
secondary of a potential transformer, is connected to terminals 1 and 2 of the
frequency sensor. A saturable transformer converts the sine-wave voltage to
spikes. Rectifier and filter circuits change the spikes to a dc voltage whose
amplitude is proportional to input frequency. This dc voltage signal is brought out
at terminals 3 and 4 and is connected to the summing point of the control
amplifier for the speed signal. This signal is applied to the summing junction with
a negative polarity to oppose the positive speed setting voltage and results in
zero voltage error at the control amplifier when requested speed setting
conditions are met.
Troubleshooting
With the alternator operating and the prime mover throttle blocked or held near
the correct frequency, check frequency sensor input terminals 1 and 2 for 115
Vac. Disconnect either lead to frequency sensor terminals 3 or 4 and check for 6
to 8 Vdc output at rated frequency. If the output is incorrect, disconnect the
sensor from the control system and check for defective components. Any 115
Vac source of the proper frequency may be used to power the frequency sensor
for test purposes. The rectifier bridge is molded into the saturable transformer
housing, so no direct check of these components can be made separately. The
other components may be checked separately. The unit may be sent to
Woodward for repair or exchange (see Chapter 2).
Reference Manuals
82510 Magnetic Pickups & Proximity Switches for Electronic Controls
82514 Speed Setting Pots used on 2301, 2500, & 8290 Systems

Manual 82503 2301 Frequency Sensor
Woodward 3
Figure 1-1. Schematic Diagram
Figure 1-2. Typical Plant Wiring Diagram
(Do not use for construction.)

2301 Frequency Sensor Manual 82503
4 Woodward
Figure 1-3. Bottom View
Figure 1-4. Outline Drawing

Manual 82503 2301 Frequency Sensor
Woodward 5
Chapter 2.
Product Support and Service Options
Product Support Options
If you are experiencing problems with the installation, or unsatisfactory
performance of a Woodward product, the following options are available:
1. Consult the troubleshooting guide in the manual.
2. Contact the OE Manufacturer or Packager of your system.
3. Contact the Woodward Business Partner serving your area.
4. Contact Woodward technical assistance via email
(EngineHelpDesk@Woodward.com) with detailed information on the
product, application, and symptoms. Your email will be forwarded to an
appropriate expert on the product and application to respond by telephone
or return email.
5. If the issue cannot be resolved, you can select a further course of action to
pursue based on the available services listed in this chapter.
OEM or Packager Support: Many Woodward controls and control devices are
installed into the equipment system and programmed by an Original Equipment
Manufacturer (OEM) or Equipment Packager at their factory. In some cases, the
programming is password-protected by the OEM or packager, and they are the best
source for product service and support. Warranty service for Woodward products
shipped with an equipment system should also be handled through the OEM or
Packager. Please review your equipment system documentation for details.
Woodward Business Partner Support: Woodward works with and supports a
global network of independent business partners whose mission is to serve the
users of Woodward controls, as described here:
A Full-Service Distributor has the primary responsibility for sales, service,
system integration solutions, technical desk support, and aftermarket
marketing of standard Woodward products within a specific geographic area
and market segment.
An Authorized Independent Service Facility (AISF) provides authorized
service that includes repairs, repair parts, and warranty service on
Woodward's behalf. Service (not new unit sales) is an AISF's primary
mission.
A Recognized Engine Retrofitter (RER) is an independent company that
does retrofits and upgrades on reciprocating gas engines and dual-fuel
conversions, and can provide the full line of Woodward systems and
components for the retrofits and overhauls, emission compliance upgrades,
long term service contracts, emergency repairs, etc.
A current list of Woodward Business Partners is available at
www.woodward.com/directory.
Product Service Options
Depending on the type of product, the following options for servicing Woodward
products may be available through your local Full-Service Distributor or the OEM
or Packager of the equipment system.
Replacement/Exchange (24-hour service)
Flat Rate Repair
Flat Rate Remanufacture

2301 Frequency Sensor Manual 82503
6 Woodward
Replacement/Exchange: Replacement/Exchange is a premium program
designed for the user who is in need of immediate service. It allows you to
request and receive a like-new replacement unit in minimum time (usually within
24 hours of the request), providing a suitable unit is available at the time of the
request, thereby minimizing costly downtime.
This option allows you to call your Full-Service Distributor in the event of an
unexpected outage, or in advance of a scheduled outage, to request a
replacement control unit. If the unit is available at the time of the call, it can
usually be shipped out within 24 hours. You replace your field control unit with
the like-new replacement and return the field unit to the Full-Service Distributor.
Flat Rate Repair: Flat Rate Repair is available for many of the standard
mechanical products and some of the electronic products in the field. This
program offers you repair service for your products with the advantage of
knowing in advance what the cost will be.
Flat Rate Remanufacture: Flat Rate Remanufacture is very similar to the Flat
Rate Repair option, with the exception that the unit will be returned to you in “like-
new” condition. This option is applicable to mechanical products only.
Returning Equipment for Repair
If a control (or any part of an electronic control) is to be returned for repair,
please contact your Full-Service Distributor in advance to obtain Return
Authorization and shipping instructions.
When shipping the item(s), attach a tag with the following information:
return number;
name and location where the control is installed;
name and phone number of contact person;
complete Woodward part number(s) and serial number(s);
description of the problem;
instructions describing the desired type of repair.
Packing a Control
Use the following materials when returning a complete control:
protective caps on any connectors;
antistatic protective bags on all electronic modules;
packing materials that will not damage the surface of the unit;
at least 100 mm (4 inches) of tightly packed, industry-approved packing
material;
a packing carton with double walls;
a strong tape around the outside of the carton for increased strength.
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.
Replacement Parts
When ordering replacement parts for controls, include the following information:
the part number(s) (XXXX-XXXX) that is on the enclosure nameplate;
the unit serial number, which is also on the nameplate.

Manual 82503 2301 Frequency Sensor
Woodward 7
Engineering Services
Woodward’s Full-Service Distributors offer various Engineering Services for our
products. For these services, you can contact the Distributor by telephone or by
email.
Technical Support
Product Training
Field Service
Technical Support is available from your equipment system supplier, your local
Full-Service Distributor, or from many of Woodward’s worldwide locations,
depending upon the product and application. This service can assist you with
technical questions or problem solving during the normal business hours of the
Woodward location you contact.
Product Training is available as standard classes at many Distributor locations.
Customized classes are also available, which can be tailored to your needs and
held at one of our Distributor locations or at your site. This training, conducted by
experienced personnel, will assure that you will be able to maintain system
reliability and availability.
Field Service engineering on-site support is available, depending on the product
and location, from one of our Full-Service Distributors. The field engineers are
experienced both on Woodward products as well as on much of the non-
Woodward equipment with which our products interface.
For information on these services, please contact one of the Full-Service
Distributors listed at www.woodward.com/directory.
Contacting Woodward’s Support Organization
For the name of your nearest Woodward Full-Service Distributor or service
facility, please consult our worldwide directory published at
www.woodward.com/directory.
You can also contact the Woodward Customer Service Department at one of the
following Woodward facilities to obtain the address and phone number of the
nearest facility at which you can obtain information and service.
Products Used In
Electrical Power Systems
Facility----------------Phone Number
Brazil -------------+55 (19) 3708 4800
China----------- +86 (512) 6762 6727
Germany:
Kempen----+49 (0) 21 52 14 51
Stuttgart--+49 (711) 78954-510
India ---------------+91 (129) 4097100
Japan-------------- +81 (43) 213-2191
Korea-------------- +82 (51) 636-7080
Poland---------------+48 12 295 13 00
United States---- +1 (970) 482-5811
Products Used In
Engine Systems
Facility----------------Phone Number
Brazil -------------+55 (19) 3708 4800
China----------- +86 (512) 6762 6727
Germany-------+49 (711) 78954-510
India ---------------+91 (129) 4097100
Japan-------------- +81 (43) 213-2191
Korea-------------- +82 (51) 636-7080
The Netherlands- +31 (23) 5661111
United States---- +1 (970) 482-5811
Products Used In
Industrial Turbomachinery
Systems
Facility----------------Phone Number
Brazil -------------+55 (19) 3708 4800
China----------- +86 (512) 6762 6727
India ---------------+91 (129) 4097100
Japan-------------- +81 (43) 213-2191
Korea-------------- +82 (51) 636-7080
The Netherlands- +31 (23) 5661111
Poland---------------+48 12 295 13 00
United States---- +1 (970) 482-5811
For the most current product support and contact information, please visit our
website directory at www.woodward.com/directory.

2301 Frequency Sensor Manual 82503
8 Woodward
Technical Assistance
If you need to contact technical assistance, you will need to provide the following information.
Please write it down here before contacting the Engine OEM, the Packager, a Woodward
Business Partner, or the Woodward factory:
General
Your Name
Site Location
Phone Number
Fax Number
Prime Mover Information
Manufacturer
Engine Model Number
Number of Cylinders
Type of Fuel (gas, gaseous, diesel,
dual-fuel
,
etc.
)
Power Output Rating
Application (power generation, marine,
etc.
)
Control/Governor Information
Control/Governor #1
Woodward Part Number & Rev. Letter
Control Description or Governor Type
Serial Number
Control/Governor #2
Woodward Part Number & Rev. Letter
Control Description or Governor Type
Serial Number
Control/Governor #3
Woodward Part Number & Rev. Letter
Control Description or Governor Type
Serial Number
Symptoms
Description
If you have an electronic or programmable control, please have the adjustment setting positions or
the menu settings written down and with you at the time of the call.

Manual 82503 2301 Frequency Sensor
Woodward 9

We appreciate your comments about the content of our publications.
Send comments to: icinfo@woodward.com
Please reference publication 82503D.
PO Box 1519, Fort Collins CO 80522-1519, USA
1000 East Drake Road, Fort Collins CO 80525, USA
Phone +1 (970) 482-5811 Fax +1 (970) 498-3058
Email and Website—www.woodward.com
Woodward has company-owned plants, subsidiaries, and branches,
as well as authorized distributors and other authorized service and sales facilities throughout the world.
Complete address / phone / fax / email information for all locations is available on our website.
2012/10/Colorado
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