Rectifying faults
Error messages (power source)
099-005221-EW501
05.09.2016
7.2 Error messages (power source)
A welding machine error is indicated by an error code being displayed (see table) on the display
on the machine control.
In the event of a machine error, the power unit is shut down.
The display of possible error numbers depends on the machine version (interfaces/functions).
• Document machine errors and inform service staff as necessary.
• If multiple errors occur, these are displayed in succession.
Check the mains voltages and compare with
the welding machine connection voltages
Welding machine excess
temperature
Allow the machine to cool down (mains
switch to "1")
Top up the coolant
Leak in the coolant circuit >
repair the leak and top up the coolant
Coolant pump is not working > check excess
current trigger on air cooling unit
Wire feeder/tachometer error
Check the wire feeder
Speedometer is not emitting a signal,
M3.51 defective > inform Service.
Check shielding gas supply (for machines
with shielding gas monitoring)
Inverter error > inform Service
Earth fault between welding
wire and earth line
Separate the connection between welding
wire and casing or an earthed object
Fast cut-out
Triggered by BUSINT X11 or
RINT X12
Arc interruption
Triggered by BUSINT X11 or
RINT X12
Ignition error after 5 s
Triggered by BUSINT X11 or
RINT X12
Emergency stop deactivation
Check the emergency stop circuit at the
interface for automated welding
Wire feeder not detected.
Control cable not connected.
Incorrect ID numbers
assigned during operation
with multiple wire feeders.
Check ID number assignation
Wire feeder 2 not detected.
Control cable not connected.
VRD (open circuit voltage
reduction error).
Excess current detection on
wire feeder
No speedometer signal from
second wire feeder (slave
drive)
Check the connection and particularly the
speedometer for the second wire feeder
(slave drive).