IS-120B
12. Troubleshooting
12-2
Fault
code
Contents
Cause
Countermeasures
E-06
Current error
Welding current is out of
CURRENT
setting range on
MONITOR SET
screen.
Check for stained welding
electrode or cable loose
connection.
E-07
Pulse width
error
Pulse width of welding current
is out of
PULSE %
setting range
on
MONITOR SET
screen.
Check workpiece and welding
electrode.
E-08
Insufficient
number of weld
counts
Counted number of welds is
less than
WELD COUNT
setting.
Add number of welds to make
up for insufficiency
(See
4. (7)(e)
)
.
E-09
Step end
STEPPER COUNT
finished
last step.
Dress or replace tip, then reset
step
(See
6. (1)(2)
)
.
HEAT
setting.
P/S RATIO
(Primary current),
or
＜
5 or
＞
200 in primary
constant-current peak value
control mode.
UP SLOPE
or
DOWN SLOPE
is longer than
WELD
.
E-10
Schedule
setting error
Both
WELD1
and
WELD2
equals to “0”.
Correct each setting.
E-11
Increase ratio
error
HEAT
setting, including
HEAT
INCREASE %
setting is larger
than max. value of current,
voltage, or power setting.
Correct each setting.
(
See
E-10
above and
4. (10)
)
External emergency stop input
circuit is open.
Rectify cause of emergency
stop, then close stop circuit.
E-12
Emergency
stop
Power supply for external input
is not connected.
Check Terminals 6,7,8 and 9
connections
(See
6. (1)(2)
)
.
E-13
Overcurrent
Primary current above 220A is
detected.
Check for welding transformer
and welding electrode troubles.
Cooling water flow in pipe to
which flow switch is installed
is low
Increase cooling water flow
rate to meet specifications.
E-15
Flow switch
error
Power supply for external
input is not connected.
Check Terminals 6,7,8 and 9
connections
(See
6. (1)(2)
)
.
E-16
Schedule
signal input
error
INTERRUPT
is turned on and
schedule signal is not input
when external start signal is
input.
Input schedule signal before
start signal
(See
4. (8)(k)
)
.
E-17
Input power
supply error
Frequency of incoming power
supply is not stable, and
equipment cannot determine if
it is 50Hz or 60Hz.
Check consuming condition of
electricity to see if it is used up to
specified level.
> 200
