DCS 500 F 40 No ext. FAN ack, F 41 No main cont. ack, F 42 Field ex.1 not OK, See Fault Code F

Chapter 4 - Signals and Troubleshooting

Code	Text on	Definition /	Status	Remark
seven	LCD of control panel	Action	signal
segm.	CDP 31x		(FAULT_WORD_1/2)
display

field weakening range too big / threshold too high

Check: - Do selection parameters match the field exciter (field supply)?

-Field exciter, it´s supply, cable and field winding;

-Take this error message at the data logger as a trigger condition and record signals 11302 and 11203

-Status/level of acknowledge signal.

F 40 No ext. FAN ack. No acknowledge from FAN of motor 11102 bit 6 (1)

Check: - Was input for acknowledge signal (parameter [P 911]) used?

-Contactor circuit/supply for fan of motor;

-Status of binary inputs/outputs (DI/DO) on SDCS-IOB-1/2 board.

F 41 No main cont. ack. Missing main contactor acknowledge 11102 bit 7 (3)

Check: - Switch-ON/-OFF sequence correct?

- Status of binary input DI for ac- knowledge signal and of ACK MAIN CONT ([P 912]) after main contactor is closed;

-Status of binary output DO resp. of auxiliary contactor (relay) closing the main contactor after ON/OFF command.

F 42 Field ex.1 not OK	FIELD EXCITER 1 (field supply 1) status is not 11102 bit 12	(1)
	O.K.

Afault was found during self-diagnosis of field exciter {see [11203])}

Check: - Field exciter operation; change the unit, if necessary.

F 43 Field ex.2 not OK	FIELD EXCITER 2 (field supply 2) status is not 11102 bit 13	(1)
	O.K.
	{See Fault Code F 42}

DCS 500B / DCP 500B Operating Instructions IV A 4 - 9

3ADW000055R0401_DCS500B_Operating Instruction_e_d