User`s manual

apfiff09 marine vacon • 253
24-
7
F51 External fault
Possible cause:
1. Digital input fault.
Correcting measures:
 Remove fault situation from external device.
F52 Keypad communication
Possible cause:
1. The connection between the control keypad or NCDrive and the AC drive is broken.
Correcting measures:
 Check keypad connection and possible keypad cable.
F53 Fieldbus communication
Possible cause:
1. The data connection between the fieldbus Master and the fieldbus board is broken.
Correcting measures:
 Check installation.
 If installation is correct contact the nearest Vacon distributor.
F54 Slot fault
Possible cause:
1. Defective option board or slot
Correcting measures:
 Check board and slot.
 Contact the nearest Vacon distributor.
F56 Temperature sensor board 1 fault
Temperature protection function is used to measure temperature and give warning and/or fault
when set limits are exceeded. Marine application supports two temperature sensor boards
simultaneusly. One can be used for the motor winding and the other for the motor bearings.
A1 Temperature limit has been exceeded.
A2 Sensor not wired or not working.
A3 Short circuit.
Possible cause:
1. Temperature limit values set for the temperature board parameters have been exceeded
Correcting measures:
 Find the cause of temperature rise
 Check sensor wiring