N1500i FACS Manual
78
Part No. 729-110-053 V.1.03
© 2018 Nelson Stud Welding, Inc. All rights reserved.
Description:
When the internal temperature sensor trips, the control disables welding so as not
to allow damage to the unit. This error is displayed while the unit is in the over-
temperature condition and disappears when it is ready for more welding. The
normally closed temperature sensor is located on the output board and connects
to pins 1 and 13 of J24 of the FACS input board. The sensor opens when it reaches
80 deg C.
Likely problems or items to check - in order from most likely to least likely:
1.
Fan is not functional or is blocked. Check that fan can physically turn
and the wiring to the fan. Short the fan sensor to manually activate the
fan. Make sure it works.
2.
Inspect wiring from over-temp thermostat to the FACS input board
(J24 on FACS input board pins 1 and 13). Measure ~22VDC while open,
near 0VDC while closed.
3.
Scroll on user interface using time up\down arrows for other errors
that may indicate another problem. Measure 20VDC supply on weld
output terminals with connectors disconnected.
4.
Replace thermal sensor
5.
Replace wiring
8.3.12 E012 Short Circuit-Check Gun Lift Setting
Fatal, meaning you have to power down to continue welding
>> No
Acknowledge, meaning the error will exist as long as the unit is powered
on. (Note, welding can continue while the error exists)
>> No
Description:
If the stud voltage of the power unit is less than 20V while welding for over 100ms,
the output is considered shorted. When the unit is shorted, it has the potential for the
capacitor banks to go out of balance and damage the unit (if operated this way or
with the voltage on one side above the rating of the switch board 400VDC). The unit
aborts welds and displays this error if this condition occurs during the main arc time.
If this occurs during the plunge time, the error is not displayed, but the weld is
aborted - as this is expected to happen during plunge time.
E012
