To Next PageTo Next PageWhy is my GAC ESD5500E engine governing system not functioning?
If the GAC Control Unit's engine governing system isn't working, start by checking the DC battery power connection and the fuse. Also, ensure the battery voltage is adequate and inspect the wiring for errors. Perform voltage tests as described in Steps 1 through 4. If the problem persists, consult your actuator publication for actuator testing procedures.
What to do if GAC ESD5500E shows fast periodic instability?
If your GAC Control Unit is showing fast periodic instability, ensure switch C1 is set to OFF. Readjust the GAIN and STABILITY for optimum control. Try removing the E1 to E2 jumper and readjust GAIN and Stability afterward. Also, turn off any other electrical equipment that might be causing interference.
How to fix slow periodic instability in GAC Control Unit?
To address slow periodic instability in your GAC Control Unit, readjust the GAIN and STABILITY. Additionally, adjust the DEAD TIME COMPENSATION by adding a capacitor from posts E2 to E3 (negative on E2), starting with 10 mF and increasing until the instability is eliminated. Check the fuel system linkage during engine operation for binding, high friction, or poor linkage.
What causes non-periodic engine behavior in GAC ESD5500E?
To resolve non-periodic engine behavior with your GAC Control Unit, increasing the GAIN may reduce the instability, but not totally correct it. Check for engine mis-firings, an erratic fuel system, or load changes on the generator set voltage regulator. If the throttle is slightly erratic but performance is fast, move switch C1 to the OFF position.
How to increase magnetic speed signal in GAC ESD5500E?
To increase the magnetic speed signal in your GAC Control Unit, raise the amplitude of the speed sensor signal by reducing the gap between the speed sensor tip and the engine ring gear.
General| Isochronous Operation Range | ±0.25% or better |
|---|---|
| Speed Range | 1K ~ 7.5K Hz continuous |
| Droop Range | 1 ~ 5% |
| Operating Temperature Range | -40 ~ 85 °C |
| Input Power | 12 or 24 VDC Battery Systems (Transient & Reverse Voltage Protected) |
| Reverse Polarity Protection | Yes |
All-electronic device for engine speed control responding to transient load changes.
Details performance, reliability, environmental, compliance, physical, and I/O parameters.
Includes outline diagram, dimensions, and mounting advice.
Covers shielded cables, terminal assignments, and special wiring configurations.
Covers initial settings for GAIN, STABILITY, STARTING FUEL, and SPEED RAMPING.
Procedure to minimize exhaust smoke at start-up.
Describes two methods: Operating Speed and Idle Speed.
Features for idle speed setting and soft/lead coupling circuits.
Details for load sharing units, auto synchronizers, and accessory power.
Using a potentiometer to adjust engine speed continuously over a range.
Function and adjustment of droop for paralleling generators.
Diagnosing system failure and insufficient magnetic speed signals.
Identifying and resolving fast, slow, and non-periodic engine instability.
Troubleshooting engine overspeed and actuator energization issues.
Diagnosing why the engine remains below the desired governed speed.
