fiac HP50 - Page 28

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5 USING THE COMPRESSOR
7.
The dc voltage of the intermediary circuit is insufficient due to a missing mains phase, blown fuse or an
internal fault of a rectifier bridge.
THE COMPRESSOR STOPS!
Solution:
Check the mains power supply, the fuses and the power supply voltage.
To restore machine operation:
Eliminate the cause for the fault.
Press the RESET button on the keypad of the ACS550 INVERTER inside the electric cabinet. Then press
also the “RESET” key on the control board to set the compressor ready to start.
8.
Internal heat probe faulty.
THE COMPRESSOR STOPS!
Solution:
Internal fault. The thermistor that measures the internal temperature of the inverter is open or has short-
circuited. Contact the manufacturer.
To restore machine operation:
Eliminate the cause for the fault.
Press the RESET button on the keypad of the ACS550 INVERTER inside the electric cabinet. Then press
also the “RESET” key on the control board to set the compressor ready to start.
9.
The analogue control signal is lower than the minimum value admitted due to an insufficient signal level
or to an error in the connection of the control unit.
THE COMPRESSOR STOPS!
Solution:
Check if the levels of the analogue control signal are correct. Check the control cabling.
To restore machine operation:
Eliminate the cause for the fault.
Press the RESET button on the keypad of the ACS550 INVERTER inside the electric cabinet. Then press
also the “RESET” key on the control board to set the compressor ready to start.
10.
Loss of cyclic communication between the drive and the master station.
THE COMPRESSOR STOPS!
Solution:
Check the fieldbus communication status. Check the connections of the cables. Check if the master
is able to communicate.
STATUS WORD1: 00032
STATUS WORD2: 00002
STATUS WORD1: 00128
STATUS WORD1: 02048