Fault Code Descriptions - ABB MigRob 500 Product Manual

Fault
code
26 Program error
28 Lost program data
Unit Power supply 1*
Welding data unit
Power unit
9.1

Fault code descriptions

Fault Description
code
1 Program memory error (EPROM)
The program memory is damaged.
This fault does not disable any functions.
Action: Restart the machine. If the fault persists, send for a service technician.
2 Microprocessor RAM error
The microprocessor is unable to print/read to the internal memory.
This fault does not disable any functions.
Action: Restart the machine. If the fault persists, send for a service technician.
3 External RAM error
The microprocessor is unable to print/read to the external memory.
This fault does not disable any functions.
Action: Restart the machine. If the fault persists, send for a service technician.
4 5 V power supply low
The power supply voltage is too low.
The current welding process is stopped and starting is prevented.
Action: Turn off the mains power supply to reset the unit. If the fault persists, send for a
service technician.
5 Intermediate DC voltage outside limits
The voltage is too high or too low. Too high a voltage can be due to severe transients on
the mains power supply or to a weak power supply (high inductance of the supply or a
phase missing).
The power unit is stopped and cannot be started.
Action: Turn off the mains power supply to reset the unit. If the fault persists, send for a
service technician.
6 High temperature
The thermal overload cut--out has tripped.
The current welding process is stopped and cannot be restarted until the cut--out has
reset.
Action: Check that the cooling air inlets or outlets are not blocked or clogged with dirt.
Check the duty cycle being used, to make sure that the equipment is not being overloaded.
7 High primary current
The power unit takes too much current from the DC voltage that supplies it.
The power unit is stopped and cannot be started.
Action: Turn off the mains power supply to reset the unit. If the fault persists, send for a
service technician.
ba39d1ea
Description
Power supply 2*
+3 V
+15 V
- - 13 - -
Welding data
unit
x
x
Power supply 3*
--15 V
Power unit
x
x
+24 V