Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
47
6.2.1 Additional Warning – Rebooting/Tripping of GFCI
Check AC Power Supply specifications are in compliance with this power unit’s requirements.
If using an Auto Transformer, test on a standard input supply.
Reduce F67. It will reduce charge current and possibly eliminate the problem, but will increase charging time.
6.2.2 Additional Warning - Front Panel Gun Coil Indicator Blinks RED As If No Gun
Connected, But Gun is Connected
Check the wire connections to the front panel gun connector. Try a different gun connected directly in to the
front panel. Beyond this, check that 15VDC exists on the control board connector JP6 pins 6 and 13.
If the 15VDC at the control board is present,
try replacing the control board first, then the output board if
necessary.
If the 15VDC at the control board is not present,
trace it back to the transformer wires that connect to J1
pins 1 and 2 of the power supply board. They should read ~18VAC. If 18VAC is present, replace the
power supply board. If the 18VAC is not present, replace the transformer.
6.2.3
Additional Warning - F32 Actual Weld Time
Actual weld time in F32 is different than front panel weld time setpoint: See
Operational Function Codes &
Error Codes
, F31 must be calibrated for each preset.
6.2.4
Additional Warning – Continuous Tripping of Breaker
If the breaker repeatedly trips with a unit operating with 230V
input power, the model might not be configured for the correct
operating mode.
To configure for International Mode whereby F67 (Charge
Intensity) is reduced to 70%:
1. Power unit off
2. Press and hold [
“I” down key] and [6] simultaneously
3. Power on while still holding the keys
4. Release keys
5.
Use any key to toggle the display to “ON”
6. Wait approximately 5 seconds and unit will reboot
To start the system without charging it,
1. Power unit off
2. Press and
hold [“I” down key] and [3] simultaneously
3. Power on while still holding keys
4. Release keys
Unit will reboot having not charged. This allows the operator to make F67 changes. Once ready, power
system down, then back up to charge normally.
“I” down key
6
Summary of Contents for ArcCharger N550C DOMESTIC
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