ABB PS D75 840 Series Installation And Maintenance Instruction page 28

Version PS D and PS DH with built in electronic over load
Fault code
F1+F2
Occurs when closing terminal 8 and 9 ( gives the start signal)
No
Occurs when ramping up
No
When reaching top of ramp
No
During cont. run
During ramp down
PF is On
Yes
Switch PF off
Make a new start
By-pass contactor used?
Yes
No Yes
Is the switch PF on?
No Yes
Switch off PF
No
Short interuptions in the
supply network
No fault
Faulty P.C.B
Yes
Is the switch PF on?
No
Possible to run?
( with fault signal )
Yes
Shorted thyristor
Open motor circuit
Non conducting thyristor
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Switch off PF
Yes
No
No fault