DCS 500 manual Reversal Fault, F 66 Current Difference, Signals and Troubleshooting, IV A 4

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
F 65	Reversal Fault	Reversal of direction of current is not O.K.	11103 bit 15	(3)

The reversal of the direction of current was not correct.

Check: - External cabling between both thyristor power converters;

-Correct plugging in of flat cable X18:?

F 66 Current Difference	Current feedback difference (deviation) be-	11103 bit 14	(3)
	tween Master and Slave Drive

There is a current feedback difference (de- viation) between Master and Slave Drive (in twelve pulse configuration).

Check: - Parameter settings [P 3606] and [P 3605];

-Power-circuit cabling;

-Symmetry of control logic and scaling of signals exchanged between Master and Slave Drive.

DCS 500B / DCP 500B Operating Instructions IV A 4 - 11

3ADW000055R0401_DCS500B_Operating Instruction_e_d