Troubleshooting - OTC Welbee P400 II Owner's Manual

Error code Error cause
-
Fieldbus Communication Error:
E- 920
Watchdog
Fieldbus Communication Error: NAK
E- 921
Resending Over
Fieldbus Communication Error: No
E- 922
Connection
E- 950 CAN Bus Off Error
There is a duplicate ID on a single
E- 951
bus (*1)
E- 952 CAN Error
E- 953 CAN Received Data Error
E- 954 CAN Error Buffer Overflow
E- 955 CAN Power Source Type Mismatch
CAN Sending/Receiving Memory
E- 956
Error
E- 957 CAN Error Timeout
E- 958 CAN Error Command Receipt
E- 959 No CAN Error Connection
Push-Pull Torch Communication
E- 961 Error / Inline Assist Feeder
Communication Error
9.2

Troubleshooting

This section explains the typical problems other than the error codes, their causes, and how to cope with them.
Check the table below before requesting repair service.
• Before inspecting the welding power source, make sure to read "8.1
Maintenance and Inspection".
No. Problem
1 The power switch has tripped.
The power LED switch does not light
2 even when the power switch is
turned on.
Nothing is displayed on the left/right
3 digital meters even when the power
switch is turned on.
An error code is displayed when the
4
power switch is turned on.
5 Shield gas is not flowing.
Action and how to cancel error
• Contact your dealer.
• Turn off the power switches of all other CAN-connected welding power sources, then
turn on the power switches and check the setting of internal function F43.
( 6.7.2.26 F43: CAN ID)
-
• The error code will disappear when the power switch is turned off.
• Contact your dealer.
Possible cause
Leak has occurred in the welding
power source.
The primary power source is not
supplied.
The protection circuit has been
activated due to temperature error.
The valve of gas cylinder is closed.
The pressure of gas cylinder is
insufficient.
Setting/handling of the external
inputs is not correct.
The external input cables are
disconnected/short-circuited.
T
ROUBLESHOOTING
T
ROUBLESHOOTING
Precautions for
-
Corrective action
DO NOT turn on the power switch. Contact your dealer.
Supply the primary power source 208/230/460V ± 10%.
Leave it untouched (with the power on) and operate the
cooling fan for 10 minutes or more, and then turn off the
power.
After the above, clean dusts inside the welding power
source. ( 8.3 Periodical Inspection
-
Open the gas valve.
Replace the gas cylinder.
Check that the setting of internal functions F29 to F32 is
correct. ( 6.7.2.22 F29 to F32: External input terminal
-
setting)
Check that there is no abnormality in the cables
connected to the external input terminal block.
If any, repair/replace the cables.
9
C
HAPTER
137