Technical Manual 36564

(Revision A)
(replaces I-SAL-003)
Original Instructions

ESSE-2
Electronic Speed Switch

Installation and Operation Manual

 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.
DEFINITIONS  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.

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.

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.

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.

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.

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.

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.

Revisions—Text changes are indicated by a black line alongside the text.

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 2008
All Rights Reserved
Manual 36564A ESSE-2 Electronic Speed Switch

Contents

ELECTROSTATIC DISCHARGE AWARENESS ................................................. II

CHAPTER 1. GENERAL INFORMATION .......................................................... 1
Introduction ............................................................................................................. 1
Electrical Operation ................................................................................................ 1
CHAPTER 2. SPECIFICATIONS ..................................................................... 3
CHAPTER 3. INSTALLATION ........................................................................ 4
Mounting Instructions ............................................................................................. 4
Wiring Instructions .................................................................................................. 4
CHAPTER 4. ADJUSTMENTS........................................................................ 8
SW1 & SW2 Setpoint Adjustments ........................................................................ 8
Potentiometer (Setpoint Bench) Adjustment ........................................................11
Engine Verification ................................................................................................12
CHAPTER 5. TROUBLESHOOTING .............................................................. 13
CHAPTER 6. SERVICE OPTIONS ................................................................ 14
Product Service Options .......................................................................................14
Woodward Factory Servicing Options ..................................................................15
Returning Equipment for Repair ...........................................................................16
Replacement Parts ...............................................................................................16
Engineering Services ............................................................................................17
How to Contact Woodward ...................................................................................17
Technical Assistance ............................................................................................18

Illustrations and Tables

Figure 1. ESSE-2 Dimensions ................................................................................ 4

Figure 2. Connection Diagram ............................................................................... 6
Figure 3. Connection Diagram Showing Ignition Input Option ............................... 7
Figure 4. Jumpers 1, 2, and 3 ..............................................................................10
Figure 5. Setpoint Bench Adjustment ...................................................................11

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ESSE-2 Electronic Speed Switch Manual 36564A

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.

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.

ii Woodward
Manual 36564A ESSE-2 Electronic Speed Switch

Chapter 1.
General Information

Introduction
The ESSE-2 is a two-channel electronic speed switch with exceptional power
transient protection. The unit is potted for protection against harsh environments
and has proven to be reliable and rugged as well as flexible and cost effective.

In generator set applications, the two channels can be used for crank (starter
motor) disconnect or overspeed protection, or for underspeed and overspeed
warnings. In fact, most speed-related switching functions on diesel and gas
engines and other rotating machinery can be accommodated by the ESSE-2.

In addition to the standard features, options are available on the input voltage
range of operation, setpoint range, reset of tripped setpoint switches, reverse
relay logic control, and ignition signal input.

Electrical Operation
The switches shown on the face of the ESSE-2 and in Figures 2 and 3 are for
the NO power condition and for the condition of power applied with no signal
present. With input signal (Mini-Gen, etc.) and power applied, the two switches
will close at frequencies determined by the two setpoint potentiometers. When
the engine reaches proper speed during cranking (starting), SW1 will close.
Power will be removed from Terminal 10 and applied to Terminal 11, causing the
cranking motor to be disconnected. When SW2 closes during an overspeed
condition, power will be removed from Terminal 7 (fuel solenoid) and applied to
Terminal 8, causing the engine not to operate. On an ESSE-2 having reverse
relay logic, the switch will close when power is applied and open upon reaching
the setpoint.

The TEST terminal, when connected to ground, will force SW2 to close at 67 ±
10% of the setpoint. This allows a test of SW2 without running the engine at
overspeed conditions. The TACH terminal provides a connection point for a
tachometer. The electrical characteristics of the TACH signal are the same as the
input signal. The TACH terminal has 33,000 ohm isolation resistor to prevent loss
of signal from a shorted tachometer.

Reset Options
There are four reset options available for resetting the speed switch:
1. Electrical latch
2. Manual reset
3. Automatic rest
4. Adjustable (automatic) reset

With the electrical latch option, the switch (after the set point has been reached)
will close and remain closed even if the input signal frequency has been lowered
to 0 Hertz. The only way to reset the unit is to remove power.

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ESSE-2 Electronic Speed Switch Manual 36564A
With the manual reset option, the ESSE-2 is supplied with a reset button. By
depressing this button, the unit will be reset.

With the automatic reset option, the switch will automatically reset if the
frequency of the input signal is lowered to 85 ± 5%. (Refer to the example for
more details.)

With the adjustable (automatic) reset option, the switch will automatically reset at
the frequency determined by the setting of the supplied reset pot. By adjusting
the pot, the reset can be selected anywhere between 25% and 95%.

EXAMPLE:

The first setpoint is set to 1000 Hertz. With a 1500 Hertz signal applied, the
switch will close. The unit will automatically reset (switch open) if the input
frequency is lowered to 800 Hertz. The unit may reset anywhere between 800
and 900 Hertz because automatic reset is specified between 80 and 90% of the
setpoint.

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Manual 36564A ESSE-2 Electronic Speed Switch

Chapter 2.
Specifications

The speed switch’s main electrical and mechanical specifications are listed
here along with several performance characteristics.

Electrical

Input Voltage Range: 8–40 Vdc 40-80 Vdc

@ 40 V: 250 mA @ 80 V: 115 mA
Maximum Operating Current: @ 24 V: 220 mA @ 64 V: 100 mA
@ 12 V: 200 mA @ 40 V: 90 mA
@ 40 V: 70 mA @ 80 V: 75 mA
Maximum Standby Current: @ 24 V: 45 mA @ 64 V: 60 mA
@ 12 V: 30 mA @ 40 V: 50 mA
Relay Contact Ratings
28 Vdc Resistive Load: 0.1-10 A —
28 Vdc Inductive Load: 0.1-8 A —
75 Vdc Resistive Load: — 0.1-4 A
75 Vdc Inductive Load: — 0.1-3 A
900 Vdc for 100 ms exponential decay
Power Supply Transient Protection: 140 Vdc for 1 ms
110 Vdc for 0.45 s
Reverse Polarity Protection: 1000 Vdc
Signal Input
Minimum: 1.2 Vrms
Maximum: 130 Vrms
Signal Input Impedance: 33K Ohms (nominal)
Stability @ 9 Vdc to 40 Vdc Less than 1% or 8 Hz, whichever is
and 14°F to +185°F (-10°C to +85°C): greater. Unit performs to -40° F (-40° C)

Environmental

Operating Temperature: -40°F to +185°F (-40°C to +85°C)

Vibration: 4.2 G’s from 20 to 500 Hz
Shock: 4’ drop test
Nickel plated terminals. Humidity and salt
Case: spray resistant. Potted for environmental
protection
Weight: 2 lbs (0.91 kg)

Performance

Overspeed Response Time: 75 ms typical

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ESSE-2 Electronic Speed Switch Manual 36564A

Chapter 3.
Installation

Mounting Instructions
Four mounting holes are provided on the ESSE-2 case as shown in Figure
1. Although the unit can withstand the normal vibration levels and
temperature excursions encountered, it is a good practice to mount the unit
in a location where these effects are minimized. The unit should be attached
to the mounting plate with four 10-32 screws.

Dimensions in brackets are millimeters.

Figure 1. ESSE-2 Dimensions

Wiring Instructions
Good wiring practices should be applied whenever electronics are
introduced into an engine control system. If poor wiring practices are used,
the ESSE-2 may malfunction or operate erratically. See the wire gauge chart
below for proper selection of ESSE-2 terminal wires.

WIRE GAUGE CHART

CURRENT TERMINALS AWG

Under 5 Amps 1-2, 7-12 16 AWG
5-10 Amps 1-2, 7-12 14 AWG
— 3-6 18-20 AWG

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Manual 36564A ESSE-2 Electronic Speed Switch
Two-conductor shielded cable should be used when connecting the signal
source (Mini-Gen, mag pickup) to the ESSE-2. Single-conductor shielded
cable is recommended for alternator or ignition signal sources. The shield
should be connected to ground only at one end. The shield must be
connected to Terminal 2 of the ESSE-2 for the Mini-Gen or mag pickup
connection and to Terminal 5 for the alternator connection.

Do not connect a voltage between Terminals 2 and 5

of the ESSE-2. This can damage the printed circuitry
and void the manufacturer’s warranty.

Output Circuit Protection

Pulling continuous currents greater than 10 amps

through the ESSE-2’s switch contacts can damage
the printed circuitry and void the manufacturer’s
warranty.

Fuses or circuit breakers should be connected in series with the load to protect
the ESSE-2 and your warranty. The fuse should be a 10 amp slow blow. The
circuit breaker should be rated at 10 amps.

If load currents in excess of 10 amps are expected, interface relays should be

used (Refer to Figures 2 and 3).

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ESSE-2 Electronic Speed Switch Manual 36564A

Figure 2. Connection Diagram

(*) Switch can be replaced with

temporary jumper wire for test.

Figure 2. Connection Diagram

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Manual 36564A ESSE-2 Electronic Speed Switch

Figure 3. Connection Diagram Showing Ignition Input Option

To prevent damage to the controller, make sure that

it is wired in accordance with the wiring instructions
and diagrams in this manual.
 Do not tin the leads before placing them into
the terminals.
 Ensure the terminals are tightened properly
to secure wires.
 Perform a continuity check to ensure all the
wires are connected to the proper system
devices.
 Measure from each terminal to the ESSE
chassis (any cover mounting screw) and
verify high impedance (>10MΩ) to eliminate
any unexpected ground loops or unintended
connections to the housing. The battery(-)
pin may be an exception to this, depending
on the housing mounting strategy.

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ESSE-2 Electronic Speed Switch Manual 36564A

Chapter 4.
Adjustments

SW1 & SW2 Setpoint Adjustments

Setpoint Frequency in Hertz

Mini-Gen Signal Generator Signal Source
Setpoint Frequency in Hertz = 1/2 Mini-Gen RPM Setpoint
Magnetic Pickup Signal Source
Setpoint Frequency in Hertz = No. of Gear Teeth x Engine RPM Setpoint
60
Alternator Signal Source
Setpoint Frequency in Hertz = Pulley Ratio x No. of Poles x Engine RPM Setpoint
120
Ignition Signal Source (Special Option)
Setpoint Frequency in Hertz = No. of Cylinders x Engine RPM Setpoint
120

ESSE-2 Frequency Ranges

ESSE-2 speed switches have two possible operating ranges, as shown in
the chart below.

Unit SA-3678-ALR is factory set to operate within Range 2 frequencies.

User is required to set up Range 1 frequencies.

Part number suffixes in the chart describe reset options:

A = Automatic reset
L = Latch up
M = Manual reset
P = Automatic adjustable reset

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Manual 36564A ESSE-2 Electronic Speed Switch
Frequency Range Chart
For selection of frequencies, add -1 or -2 to part number.

RANGE 1 RANGE 2
PART NUMBER
FREQUENCIES FREQUENCIES

SA-3678-AA
SA-3678-AL
SA-3678-AM
SA-3678-AP
SA-3678-LL
SA-3678-LM
SA-3678-MM
SA-3678-PM 80-2,500 Hz 325-10,000 Hz
SA-3678-PP
SA-3681-ALR
SA-3682-AN
SA-3698-AN
SA-4237-AP
Manual
SA-3678-ALR † Adjustment
Required

(†) Unit is factory set to Range 2. To set up Range 1, please see

“Range and Automatic Reset” section below.

Range and Automatic Reset

(Model SA-3678-ALR only)
While range and automatic reset are normally set at the factory, adjustments or
changes may be performed by following the steps below.

1. Remove cover plate to expose jumpers. Refer to Figure 4.

2. Refer to SW1 and SW2 setpoints determined above. Refer to the table
below to determine if the J1 Jumper is to be removed. The setpoints for
both switches must be in the same range.

APPROX.
SETPOINT HERTZ JUMPER 1 POT HERTZ ADJ.
PER TURN

RANGE 1
Removed 120
80-2,500 Hz

RANGE 2
Present 400
325-10,000 Hz

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ESSE-2 Electronic Speed Switch Manual 36564A

3. With J2 in place, SW1 is latching. With J3 in place, SW2 is latching. A

latching switch means that once the relay has energized (when engine
speed has increased above the setpoint), the relay will stay energized,
even if speed decreases, unless the control is powered down and then
back up again.

If automatic reset is required on SW1, cut J2. If automatic reset is

required on SW2, cut J3. An automatic reset means that the relay will de-
energize/reset automatically when engine speed has decreased to a
point that is 80-90% of the setpoint. For example, if the relay energizes
at a setpoint of1000 Hz, the relay will de-energize automatically when
speed decreases to 800-900 Hz.

4. Replace cover and screws.

Figure 4. Jumpers 1, 2, and 3

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Manual 36564A ESSE-2 Electronic Speed Switch

Potentiometer (Setpoint Bench) Adjustment

The setpoint bench adjustment may be performed as follows:

1. Connect signal generator, frequency counter and power to ESSE-2 as

shown in Figure 5.
2. Connect ohmmeter to SW1 Terminals 10 and 12.
3. Turn SW1 setpoint potentiometer adjustment 20 turns clockwise or until
a clicking noise is heard.
4. Turn power supply, signal generator and frequency counter ON. Adjust
the input frequency for SW1 to the setpoint determined previously and
set generator output level to 1 Vac or greater.
5. The ohmmeter should read “Zero”.
6. Turn SW1setpoint potentiometer counter clockwise slowly until the
ohmmeter indicates an open circuit.
7. If desired, recheck setpoint adjustment for SW1 by lowering frequency
setting on signal generator. Remove and reapply power; slowly increase
frequency until switch trips. Repeat Steps 4, 5, and 6 if necessary.
8. Connect ohmmeter to SW2 Terminals 7 and 9. Repeat Steps 3-6 by
substituting SW2 for SW1.
9. To recheck adjustments, follow Step 7 by substituting SW2 for SW1.

Figure 5. Setpoint Bench Adjustment

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ESSE-2 Electronic Speed Switch Manual 36564A

Engine Verification
This procedure may be used to verify the performance of the SW1 and SW2
setpoints after bench adjustment with the ESSE-2 integrated on an engine.
Woodward recommends performing this test prior to commissioning an engine
and as part of your regularly scheduled maintenance program. At a minimum, it
should be completed on an annual basis.

This procedure is for a standard relay logic

model. If a switch is ordered with reverse relay
logic, battery voltage and zero voltage must be
interchanged for the given switch.

SW1 Setpoint Verification for Crank Disconnect

To verify the function of SW1 (which is energized during cranking RPM), the
following procedure can be utilized.

1. Connect a DC voltmeter between Terminal 2 (or negative terminal of

battery) and Terminal 10 as shown in Figures 2 or 3.
2. Apply power to ESSE-2 unit and start the engine.
3. The DC voltmeter should indicate zero volts at engine idle speed. If this
does not occur and the battery voltage is indicated on the DC voltmeter,
shut off engine power.
4. Review the previous adjustment section to determine if SW1 setpoint is
correct and if SW1 functions properly. Check the wiring. If everything
appears OK, remove ESSE unit and readjust SW1 according to
procedure outlined.

SW2 Setpoint Verification for Overspeed Protection

To verify the function of SW2 (which is energized when the engine overspeeds),
the following procedure can be utilized.

1. Connect a temporary jumper between Terminals 2 and 3. (Terminal 3 is

the TEST terminal for the 0.67x Setpoint test).
2. Convert the frequency setpoint of SW2 to RPM by using conversion
formula and multiply by 0.67. (RPM x 0.67 = Test Setpoint).
3. Apply power to the ESSE-2 unit.
4. Connect a DC voltmeter between Terminal 2 (or battery negative
terminal) and Terminal 7. Negative lead of voltmeter goes to Terminal 2
(or battery negative).
5. Start the engine. Monitor the tach and slowly increase engine RPM to the
TEST SETPOINT reading. Observe the DC voltmeter. It should indicate
the battery voltage before the setpoint is activated and the relay trips.
When the relay trips, at the TEST SETPOINT ± 6% RPM, the DC
voltmeter will indicate zero volts. (Remove jumper from Terminals 2 and
3 and reset SW2).

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Manual 36564A ESSE-2 Electronic Speed Switch

Chapter 5.
Troubleshooting

The following check points can be used to determine if the ESSE-2 is operating
properly. Refer to Figure 2. All AC voltage readings are in RMS.

1. Check for battery voltage and proper polarity on Terminals 1 and 2.

2. Check input signal on Terminals 5 and 6 with an AC voltmeter. When the
engine is running, the input voltage signal must be greater than 0.7 Vac.
3. Connect negative lead of DC voltmeter to negative side of battery or to
Terminal 2.
4. With power switch “ON”, the DC voltmeter must indicate battery voltage
on Terminals 9 and 12.
5. The DC voltmeter must indicate battery voltage on Terminal 7 if an
overspeed condition did not occur. If the voltmeter does not indicate
battery voltage, review the “Adjustments” chapter to determine if the
SW2 setpoint is correct and that SW2 is functioning.
6. The DC voltmeter must indicate battery voltage on Terminal 10 during
cranking and zero voltage when the engine is running. If the voltmeter
indicates battery voltage on Terminal 10 when the engine is running, turn
the power switch to the “OFF” position and review the “Adjustments”
chapter to determine if the SW2 setpoint is correct and that SW2 is
functioning.

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ESSE-2 Electronic Speed Switch Manual 36564A

Chapter 6.
Service Options

Product Service Options

If you are experiencing problems with the installation, or unsatisfactory
performance of a Woodward product, the following options are available:
 Consult the troubleshooting guide in the manual.
 Contact the manufacturer or packager of your system.
 Contact the Woodward Full Service Distributor serving your area.
 Contact Woodward technical assistance (see “How to Contact Woodward”
later in this chapter) and discuss your problem. In many cases, your problem
can be resolved over the phone. If not, you can select which course of action
to pursue based on the available services listed in this chapter.

OEM and 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 Recognized Turbine Retrofitter (RTR) is an independent company that
does both steam and gas turbine control retrofits and upgrades globally, and
can provide the full line of Woodward systems and components for the
retrofits and overhauls, long term service contracts, emergency repairs, etc.

A current list of Woodward Business Partners is available at

www.woodward.com/support.

14 Woodward
Manual 36564A ESSE-2 Electronic Speed Switch

Woodward Factory Servicing Options

The following factory options for servicing Woodward products are available
through your local Full-Service Distributor or the OEM or Packager of the
equipment system, based on the standard Woodward Product and Service
Warranty (5-01-1205) that is in effect at the time the product is originally shipped
from Woodward or a service is performed:
 Replacement/Exchange (24-hour service)
 Flat Rate Repair
 Flat Rate Remanufacture

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 is a flat-rate program and
includes the full standard Woodward product warranty (Woodward Product and
Service Warranty 5-01-1205).

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.

Charges for the Replacement/Exchange service are based on a flat rate plus
shipping expenses. You are invoiced the flat rate replacement/exchange charge
plus a core charge at the time the replacement unit is shipped. If the core (field
unit) is returned within 60 days, a credit for the core charge will be issued.

Flat Rate Repair: Flat Rate Repair is available for the majority of standard
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. All repair work carries
the standard Woodward service warranty (Woodward Product and Service
Warranty 5-01-1205) on replaced parts and labor.

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 and carry with it the full standard Woodward product warranty
(Woodward Product and Service Warranty 5-01-1205). This option is applicable
to mechanical products only.

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ESSE-2 Electronic Speed Switch Manual 36564A

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.

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Manual 36564A ESSE-2 Electronic Speed Switch

Engineering Services
Woodward offers various Engineering Services for our products. For these services,
you can contact us by telephone, by email, or through the Woodward website.
 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. Emergency assistance is also available during non-business
hours by phoning Woodward and stating the urgency of your problem.

Product Training is available as standard classes at many of our worldwide

locations. We also offer customized classes, which can be tailored to your needs
and can be held at one of our 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 many of our worldwide locations or 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 us via telephone, email us, or
use our website and reference www.woodward.com/support, and then
Customer Support.

How to Contact Woodward

For assistance, call one of the following Woodward facilities to obtain the address
and phone number of the facility nearest your location where you will be able to
get information and service.

Electrical Power Systems Engine Systems Turbine Systems

FACILITY PHONE NUMBER FACILITY PHONE NUMBER FACILITY PHONE NUMBER
Brazil ------------- +55 (19) 3708 4800 Brazil ------------- +55 (19) 3708 4800 Brazil ------------- +55 (19) 3708 4800
China ------------+86 (512) 6762 6727 China ------------+86 (512) 6762 6727 China ------------+86 (512) 6762 6727
Germany: Germany:
Kempen --- +49 (0) 21 52 14 51
Stuttgart ----- +49 (711) 78954-0 Stuttgart ----- +49 (711) 78954-0
India --------------- +91 (129) 4097100 India --------------- +91 (129) 4097100 India --------------- +91 (129) 4097100
Japan -------------- +81 (43) 213-2191 Japan -------------- +81 (43) 213-2191 Japan -------------- +81 (43) 213-2191
Korea--------------- +82 (51) 636-7080 Korea--------------- +82 (51) 636-7080 Korea--------------- +82 (51) 636-7080
The Netherlands - +31 (23) 5661111 The Netherlands - +31 (23) 5661111
Poland -------------- +48 12 618 92 00
United States----- +1 (970) 482-5811 United States----- +1 (970) 482-5811 United States----- +1 (970) 482-5811

You can also contact the Woodward Customer Service Department or consult our
worldwide directory on Woodward’s website (www.woodward.com/support)
for the name of your nearest Woodward distributor or service facility.

For the most current product support and contact information, please refer to the
latest version of publication 51337 at www.woodward.com/publications.
Woodward 17
 ESSE-2 Electronic Speed Switch Manual 36564A

Technical Assistance
If you need to telephone for technical assistance, you will need to provide the following information.
Please write it down here before phoning:

General
Your Name
Site Location
Phone Number
Fax Number

Prime Mover Information

Engine/Turbine Model Number
Manufacturer
Number of Cylinders (if applicable)
Type of Fuel (gas, gaseous, steam, etc)
Rating
Application

Control/Governor Information
Please list all Woodward governors, actuators, and electronic controls in your system:

Woodward Part Number and Revision Letter

Control Description or Governor Type

Serial Number

Woodward Part Number and Revision Letter

Control Description or Governor Type

Serial Number

Woodward Part Number and Revision Letter

Control Description or Governor Type

Serial Number
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.

18 Woodward
Manual 36564A ESSE-2 Electronic Speed Switch

Woodward 19
 We appreciate your comments about the content of our publications.
Send comments to: icinfo@woodward.com

Please reference publication 36564A.

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.

2010/4/Skokie