Red-D-Arc EXTREME 360, Technical Manual

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Always check unit before applying power (see Sections 6-1 thru 6-18).
TM-229 409 Page 38 Extreme 360
Voltage Readings
a) Tolerance −
±
10% unless specified
b) Reference − single arrow: reference to
circuit common (lead 42); double arrow:
reference to points indicated
c) Wiring Diagram − see Section 8
V1 665 volts ac RMS
V2, V3 17 volts ac RMS
V4 115 volts ac RMS
V5 24 volts ac RMS
V6, V7 470 volts dc
V8 115 volts ac RMS when FM is running
V9 24 volts dc when Relay is energized;
Relay energized in Stick mode with
output current greater than 10 amps
and preset current less than 225 amps
V10 24 volts dc when gas is flowing; see
Section 3-7 for gas valve operation
V11 +15 volts dc
V12 − 15 volts dc
V13 1 volt dc per 100 amperes of weld
output
V14 72 volts dc open circuit voltage in
Scratch Start TIG, TIG, MIG, Pulse
MIG, CC, Stick and V-Sense feeder
modes.
14 volts dc in Lift-Arc TIG mode.
6-24. Troubleshooting Circuit Diagram
Y
Discharge input capacitors according
to Section 6-3, and be sure voltage is
near zero before touching any parts.
.
No calibration available for voltmeter V or ammeter A.
Test Equipment Needed:
See Section 6-30 for
RC50 information
See Section 6-29 for
PC3 information
V14
V5
V4 V3 V2 V1
Resistance Values
a) Tolerance −
±
10% unless specified
b) Turn Off unit and disconnect input power
before checking resistance
R1 thru R6, R9 Less than 1 ohm
R7 and R8 190 − 210 ohms
Y HIGH VOLTAGE: Do not measure without
proper instrumentation.
.
V1 thru V5 and V8 − use only true RMS meter
to obtain correct voltage reading.
.
14 volts dc in Stick mode when low
open circuit voltage Stick mode is
enabled (See Section 6-23).