Diagnostic Led For Drive Control Unit (Italsea) - HAKO Hakomatic B 1100 Service Booklet

9.3.3 Diagnostic LED for Drive
control unit (Italsea)
Display / Flashes
Alarm A1
FORWARD switch ON
Alarm A2
BACHWARD switch ON
Alarm A3
Potentiometer Fault
Alarm A4
Reference OUT of neutral
Alarm A5
Over temperature
Alarm A6
POWER STAGE
Alarm A7
OVERCURRENT
Alarm A8
Power fuse/Relais
Alarm
Forward switch closed at
power-on
Backward switch closed at
power on
Potentiometer fault
Potentiometer out of neutral
position at power-on
Thermal protection
Controllers power stage
damaged
Over-current: short circuit
Power fuse or main
contactor damaged
What To Do
Put the speed reference to zero and open the
Forward switch
Put the speed reference to zero and open the
Backward switch
Check the potentiometer and it´s wiring
Move the potentiometer to neutral position or if it
is in neutral position yet, calibrate the speed
reference.
Wait a few minutes and check the motor current
replace the controller
Check the motor´s wires: if ok, and the controller
repeats this alarm, replace the controller
Controller detects a failure on the external power
fuse or power connections. If controller repeats
this alarm and the power connections are ok,
replace it
Foil 89