Stud welding unit N1500i
Version 1.31 7.June.2013
Manual part number: 729-110-027
27
Nelson Stud Welding, Inc.
• 7900 West Ridge Road • Elyria, Ohio 44035 • USA
3.2
Diagnostic Error Codes
Error
Number
Error Display
What this really means
Fatal – meaning you
have to power down to
reset. Otherwise, you
weld again to reset.
Likely problem
E - - -
E - - -: NO ERRORS
Really, no errors.
NA
E001
SHORTED CONTROL CABLE-
FIX CONTROL CABLE AND/
OR GUN
The gun control cables were shorted or
the gun coil resistance is too low.
Shorted cable-external wiring problem in the gun
circuit
-See troubleshooting-
E002
BROWNOUT CONDITION -
CHECK PRIMARY VOLTAGE
The input voltage dipped low enough to
drop out auxiliary supplies. Welding is
stopped until power is restored so as to
prevent internal damage.
Brown out on input power line
E002(A) Brownout while idle
E002(B) Brownout while welding
-See troubleshooting-
E003
CAPACITOR VOLTAGE IM-
BALANCE
The capacitors could not be balanced for
some unknown reason. The difference
between the caps is greater than 10%
(usually around 30V).
Remove the upgrade to v1.02 software
-See troubleshooting-
E004
REGULATION ERROR-ARC
WENT OUT
The control sensed that the current was
more than 50% low and the control is ap-
plying the maximum allowable pulse
width for 10ms.
Current sensor wiring or extremely high load
-See troubleshooting-
E005
REGULATION ERROR-
SHORT CIRCUIT-COULDN’T
CONTROL CURRENT
The control sensed that the current was
more than 50% high and the control is ap-
plying the minimum allowable pulse
width for 10ms.
Current sensor wiring or dead short circuit
-See troubleshooting-
E006
INPUT VOLTAGE TOO HIGH
This happens if the capacitor voltage ex-
ceeds 470V during bootup process.
x
Input voltage is too high
-See troubleshooting-
E007
INPUT VOLTAGE TO LOW
On boot-up only, after closing the charge
relay, the caps have 10 seconds to get the
proper voltage.
x
Incorrect voltage setting or broken/bad V-F signal
from one or more switch boards.
-See troubleshooting-
