Installation Check And Troubleshooting - Woodward EPG 524 Installation And Troubleshooting Manual

EPG Electrically Powered Governor
Shields
Use twisted-pair, shielded wire where the wiring diagram shows. Each shield
must be grounded only at the end nearest the control. Do not ground both ends
of a shield. Tie all shields to the same ground point. When passing a shield
through a terminal block, connect the shield to its own terminal. Do not ground
the shield at the terminal block. Do not solder to braided shields.
CAUTION—BATTERY
Damage to the speed control will occur if the battery is disconnected while
the alternator or battery charging device is energized and connected to the
control.

Installation Check and Troubleshooting

All Units
To verify correct system operation after installation and any time trouble occurs,
do the following checks in the order given. Disconnect all accessories. Leave the
IDLE/RATED switch or jumper connected. On isochronous EPGs, jumper
terminal 7 to terminal 8, and terminal 11 to terminal 12. On EPGs with droop,
leave terminals 9, 10, 11, and 12 disconnected with CT and PT wires properly
secured for safety. On EPGs with dual dynamics, leave terminals 7 and 8 open
to select primary (fast) dynamics.
If the system does not respond as indicated, find the fault and correct it.
1. Check electrical connections:
Correct?
Tight?
2. Magnetic Pickup:
Correctly adjusted?
Tight?
Resistance of 50–350 Ω?
3. Close the IDLE/RATED switch (or install a jumper).
4. Turn the governor power on: (Do not start the engine or turbine.)
Fuse OK?
Actuator shaft settles in minimum fuel position?
5. Battery Voltage:
10 to 16 Vdc for model 512, 1712?
20 to 32 Vdc for model 524, 1724?
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Manual 82329
Woodward