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1
INTRODUCTION
The ESD5500E Series Speed Control Unit is an all-electronic device designed to control
engine speed quickly and precisely in response to transient load changes.
The ESD5500E controls a wide variety of engines in isochronous or droop mode when
connected to a proportional electric actuator and magnetic speed sensor. The ruggedly
built ESD5500E series is designed to withstand the engine environment. Light-Force
variations are available.
moDeL
ESD5500E
Multi-VDC / Standard Unit
ESD5520E
Multi-VDC / Light-Force (Low-Current Optimized PID) / Enhanced Droop
Multi-VDC / Light-Force (Low-Current Optimized PID) / Enhanced Droop
ESD5522E
for Cummins EFC Forward Acting (Normally Closed)
Multi-VDC / Light-Force (Low-Current Optimized PID) / Anti-Windup
ESD5526E
Circuit (Gaseous) / Recommended for T1/T2 ATBs
Multi-VDC / Anti-Windup Circuit (Gaseous) / Recommended for T3/T4
ESD5528E
ATBs
2
SPECIFICATIONS
Performance
Isochronous Operation
Speed Range / Governor
Speed Drift with Temperature
Idle Adjust Clockwise
Idle Adjust Counterclockwise
Droop Range
Droop Adjust Maximum
(K-L jumpered)
Droop Adjust Minimum
(K-L jumpered)
Speed Trim Range
Remote Variable Speed
Range
Terminal Sensitivity
J
L
N
P
InPut / outPut
DC Supply
Polarity
Power Consumption
Speed Signal Range
Speed Sensor Signal
Actuator Current Range**
(77°F (25°C))
* Protected against short circuit to actuator (shuts off current to actuator), unit automatically turns on when short is removed.
** Protected against reverse voltage by a series diode. A 15 A fuse must be installed in the positive battery lead.
ESD5500E Series
Speed Control Unit
DeScrIPtIon
± 0.25 % or better
1 - 7.5 kHz Continuous
±1 % MAX
60 % of Set Speed
Less than 1200 Hz
1 - 5 % regulation
400 Hz ±75 Hz per 1.0 A change
15 Hz ±75 Hz per 1.0 A change
500 - 7.5 kHz
100 Hz ±15 Hz/Volt @ 5.0 kΩ Impedance
735 Hz ±60 Hz/Volt @ 65.0 kΩ Impedance
148 Hz ±10 Hz/Volt @ 1 MΩ Impedance
10 V DC Supply @ 20 mA MAX
12 V DC and 24 V DC Battery Systems
Transient and Reverse Voltage Protected*
Negative Ground (Case Isolated)
50 mA continuous plus actuator current
1.0 - 50 V AC
1.0 - 120 V RMS
Minimum 1.0 A
Nominal 7.0 A
Peak 10.0 A
Vibration
Testing
Ambient Temperature
Relative Humidity
All Surface Finishes
Agency
± 200 Hz
Dimension
Weight
Mounting
1
Governors America Corp. © 2021 Copyright All Rights Reserved
reLIaBILItY
100 % Functionally Tested
envIronmentaL
-40° to 85 °C [-40° to 180 °F]
Fungus Proof, Corrosion Resistant
comPLIance / StanDarDS
CE (EN55011, EN50081-2, EN50082-2),
RoHS, Lloyds Register,
DNV/GL, Bureau Veritas
PHYSIcaL
See Wiring Diagram and Outline
Any position, vertical preferred
ESD5500E Series Speed Control Unit 2-2021-F2 PIB1002
1 g @ 20-100 Hz
up to 95 %
1.20 lbf [0.54 kgf]
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Table of Contents
Related Manuals for GAC ESD5522E
Summary of Contents for GAC ESD5522E
- Page 1 Multi-VDC / Standard Unit ESD5520E Multi-VDC / Light-Force (Low-Current Optimized PID) / Enhanced Droop Multi-VDC / Light-Force (Low-Current Optimized PID) / Enhanced Droop ESD5522E for Cummins EFC Forward Acting (Normally Closed) Multi-VDC / Light-Force (Low-Current Optimized PID) / Anti-Windup ESD5526E...
- Page 2 INSTAllATION & OUTlINE DIAgRAm reaD tHIS entIre GuIDe Before Per- formInG an InStaLLatIon. Vertical orientation allows fluids to drain in moist environ- ments. Avoid Extreme Heat Mount in a cabinet, engine enclosure, or sealed metal box. Dimensions [mm] WIRINg ESD5500E Series Speed Control Unit 2-2021-F2 PIB1002 Governors America Corp.
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Page 3: Terminal Definition
Load Sharing/Synchronizing, 0-10 V DC (5V Nominal, Reversed, 148 Hz/V). Shielded cabling recommended. Accessory Power Supply 10 V DC Output To Power GAC Load Sharing and Synchronizing Modules aDDInG a PotentIometer Use a single remote speed adjustment potentiometer to adjust engine speed. - Page 4 ADJUSTmENTS BEFORE ENgINE STARTUP Make sure the following adjustments are set before starting the engine. GAIN Middle Position STABILITY Middle Position SPEED TRIM CONTROL Middle Position STARTING FUEL Full CW (MAX fuel) SPEED RAMPING Full CCW (fastest) START ThE ENgINE The speed control unit governed speed setting is factory set at approximately engine idle speed.
- Page 5 STARTINg FUEl ADJUSTmENT The engine’s exhaust smoke at start-up can be minimized by complet- ing the following adjustments: Place the engine in idle by connecting Terminals M and G. Adjust the IDLE speed for as low a speed setting as the appli- cation allows.
- Page 6 SuPPLY The +10 volt regulated supply, Terminal P, can be utilized to provide power to GAC governor system accessories. Up to 20 mA of current can be drawn from this supply. Ground reference is Terminal G.
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Page 7: Conversion Formulas
An additional fixed resistor may be placed across the potentiometer to obtain the exact desired range. Connect the speed note range potentiometer as shown to the right using Terminals G and J. Contact GAC for assistance if you experience difficulty obtaining the desired variable speed governing performance. -
Page 8: Troubleshooting
TROUBlEShOOTINg If the engine governing system does not function, the fault may be determined by performing the voltage tests described in Steps 1 through 4. Positive (+) and negative (-) refer to meter polarity. Should normal values be indicated during troubleshooting steps, and then the fault may be with the actuator or the wiring to the actuator. - Page 9 TROUBlEShOOTINg (CONTINUED) unSatISfactorY Performance SYmPtom cHecK ProBaBLe cauSe After the actuator goes to full fuel, disconnect the speed sensor at Terminal C and D. If the actuator Do Not Crank. Apply DC is still at full fuel-speed then the speed control unit is defective. power to the governor system.