GAC ESD5200 Series Manuel - Page 4

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GAC ESD5200 Series Manuel
6

START THE ENgINE

The factory set SPEED setting is set to approximately engine idle speed, 1000 Hz., Speed sensor signal or 600 RPM.
Crank the engine with DC power applied to the governor system. The actuator will energize to the maximum fuel position until the engine
starts. The governor system should control the engine at a low idle speed.
If the engine is unstable after starting, refer to section 8,
7

gOvERNOR SPEED SETTINg

To increase the speed control unit speed set point, turn SPEED adjustment con-
trol clockwise.
Remote speed adjustment can be obtained with the optional 5kΩ Speed Trim
Control potentiometer.
8
ADJUSTINg FOR STABIlITY
Once the engine is running at operating speed and with no load, the following governor perfor-
mance adjustments can be made to increase engine stability.
ParameTer
GAIN
1.
Rotate the GAIN adjustment clockwise until instability develops.
2.
Gradually move the adjustment counterclockwise until stability returns.
3.
Move the adjustment one division further counterclockwise to ensure
stable performance (270° potentiometer).
4.
If instability persists, adjust the next parameter.
STABILITY
Follow the same adjustment procedure, steps 1 - 3, as the GAIN parameter.
Normally, adjustments made at no load achieve satisfactory performance. If further performance improvements are required,
noTe
refer to section 10,
ADJUSTING FOR
STaBILITY aDJUSTmenT
ProceDUre
SYSTEM
TROUBLESHOOTING.
STABILITY.
GAIN
4
ESD5200 Series Speed Control Unit 1-2021-C3 PIB1030
Governors America Corp. © 2021 Copyright All Rights Reserved
SPEED
OVERSPEED
ON
1
2
STABILITY
SPEED
OVERSPEED
ON
1
2
GAIN
STABILITY