Continental 590 DC governor repair common trip alarm fault handling methods are as follows:

1, OVERSPEED (speed warning F*0001)

The speed feedback exceeds 125% of the rated speed to start the alarm, and the fault is mostly lost in the speed feedback signal. Such as analog motor damage, disconnection, wiring, etc.

2, MISSING PULSE (lost pulse alarm F*0002)

The six-pulse armature current waveform loses one pulse and initiates an alarm when the motor load exceeds the 1.5-fold DISCONTINUOUS value. The causes of the fault are mostly: harmonic interference, trigger board failure, loose plug, and thyristor damage.

3, FIELD OVER I (excitation over current alarm F*0004)

The motor excitation current exceeds the calibration value by 120% to start the alarm. The cause of the fault is: the board excitation triggers the fault, the control loop is poorly tuned, and the motor excitation coil is faulty.

4, HEATSINK TRRIP (heatsink overheat alarm F*0008)

The radiator temperature of the governor is too high. Poor ventilation or too little space between the governors. The fan is faulty. Check the fuse on the power board for the wrong direction of rotation. Armature overcurrent—Check that the nominal armature current on the motor nameplate meets the governor's current correction value.

Note: The thyristor must be allowed to cool before the governor can be restarted.

5, THERMISTOR (external thermistor alarm F*0010)

The motor temperature is too high. That is, the terminals C1 and C2 are open. Poor ventilation. Blower failure - check the direction of rotation, air filter is blocked. Armature over current - should check whether the nominal armature current on the motor nameplate meets the governor's current correction value.

Note: The motor must be allowed to cool before the governor can be restarted.

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