Miller Electric XR A - Manual (Page 29)

OM-1581 Page 25
5-4. Run-In Speed Control
1 Run-In Speed Control
Use control to set wire feed speed
before arc initiation.
After arc initiation, wire feed speed
is controlled by the Wire Speed
Control on the welding gun (see
Section 5-12).
The scale around the control is per-
cent of full range, not wire speed.
As a general rule, set run-in speed
lower than welding wire feed speed.
Set control at 0 (zero) for scratch
start.
Ref. 176 700-A
1
5-5. Jog Switch
1 Jog Switch
Use switch to energize drive mo-
tors in feeder and gun without ener-
gizing welding power source con-
tactor. When switch is held up in
Jog position, wire speed is set by
Wire Speed Control on gun.
1
5-6. Voltage/Wire Speed Switch And Meter (Optional)
1 Voltage/Wire Speed Meter
2 Voltage/Wire Speed Switch
When switch is in Voltage position,
and operator is welding, meter dis-
plays arc voltage. Cable resistance
and poor connections may cause
displayed voltage to vary slightly
from actual voltage at welding arc.
When switch is in Wire Speed posi-
tion and operator is welding, meter
displays preset wire speed in in-
ches per minute. This wire speed is
set by Wire Speed Control on the
gun.
During run-in portion of weld cycle,
meter displays run-in speed as se-
lected on Run-In Speed control on
feeder (see Section 5-4).
When welding Direct Current Elec-
trode Negative (DCEN), meter
does not display accurate output
voltages; however, meter displays
accurate wire speed values.
1
2
Volt sensing lead must be con-
nected to workpiece for me-
ters to operate.