MOTOMAN 5-1 Spot Welding Manual for Medar
SECTION 5
TROUBLESHOOTING
5.1 Medar Alarms and Errors
Table 5-1 identifies common Medar alarms that may occur on the programming
pendant during welding. In most cases, alarms are reset by pressing SELECT
when the RESET prompt appears on the display. If for some reason the RESET
prompt is no longer visible, simultaneously press and hold INTERLOCK and
WELD ALARM RESET to clear alarms.
Table 5-1 Medar Application Errors
Error
Code
Spot Weld Application
Message
Source Source Fault Message
0 No Error
1 Medar - Input/Output Error AC/MFDC
AC/MFDC
AC/MFDC
MFDC
Invalid Sequence Selected
I/O Adapter Failure
Weld Proceed
Charge/Discharge Duty Cycle
2 Medar - Input/Output Alarm AC/MFDC Weld Initiate Not Present
3 Medar - Incomplete Weld AC/MFDC
AC
AC/MFDC
Control Stop
Heat Cycle Limit
Weld Interruption
4 Medar - Stepper Approaching
Maximum
AC/MFDC Stepper Approaching Maximum
5 Medar - End of Stepper AC/MFDC End of Stepper
6 Medar - Sure Weld Trend Limit AC Sure Weld Trend Limit
7 Medar - High/Low Current
Limit
AC/MFDC
AC/MFDC
High Current Limit
Low Current Limit
8 Medar - Firing Error AC
MFDC
SCR Misfire
Control Failed to Fire
9 Medar - Cylinder Fault AC
AC
Tips Not Touching
Tips Touching
10 Medar - Cylinder Alarm AC Slow Cylinder
11 Medar - Power Factor Error AC
AC
Initial Power Factor Out of Range
Power Factor Limit
12 Medar - Compensation AC
AC
MFDC
MFDC
MFDC
Voltage Compensation Limit
Current Compensation Limit
Low Power Line
Soft Overcurrent
Current Regulation
13 Medar - Insufficient Line Volt-
age
AC Insufficient Line Voltage
14 Medar - Extend Weld AC/MFDC Extend Weld
15 Medar - Isolation Contactor
Error
AC
MFDC
Isolation Contactor Off When Nee
Inverter ISO CNTR Off
16 Medar - Welding Bus Voltage AC/MFDC
MFDC
MFDC
No Zero Crossing Sync
DC Bus Over Voltage
Inverter Bus
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