Miller RPC-IP Gebruikershandleiding - Pagina 4
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Mounting
Screws (5)
Front
Panel
3-1. MODE SELECTOR SWITCH (Figure 3-1)
The Mode Selector switch allows selection of CC
(constant current), CV (constant voltage), or pulsed out-
put from the welding power source.
The CC position provides a constant current output spe-
cifically designed for Shielded Metal Arc (SMAW) and
Gas Tungsten Arc (GTAW) Welding processes. The CC
position is also normally used for Air Carbon Arc Cutting
(CAC-A) and gouging processes.
The CV position provides a constant voltage output de-
signed for wire feeding applications such as Gas Metal
Arc (GMAW), Flux Cored Arc (FCAW), or Submerged
Arc (SAW) Welding.
When pulsed output is desired for Gas Metal Arc Weld-
ing - Pulsed Arc (GMAW-P), place switch at the desired
number of pulses per second: 60, 90, 120 or 180.
3-2. ARC CONTROL AND PILOT LIGHT (Figure 3-1)
IMPORTANT: The ARC CONTROL potentiometer and
pilot light are disabled in the CV (Constant V oltage) and
pulsed modes.
The ARC CONTROL potentiometer provides variable
selection of short-circuit current to suit individual weld-
ing conditions. Rotating this control clockwise causes
the current to increase as the short-circuit condition is
Circuit
Board
PC5
Figure 2-2. Dip Switch Positions And Locations
SECTION 3 – OPERATOR CONTROLS
Both dip switches down for
1000 ampere model operation
Both dip switches up for
650 ampere model operation
approached. When this control is set at some value
above 0, the current begins to increase when arc volt-
age drops below 20 volts.
When the control is set at 10 (MAX.), the short-circuit
current is considerably higher than normal welding cur-
rent (see welding power source volt-ampere curve for
CC mode). This provides extra current for arc starting in
out-of-position welds as well as for certain types of elec-
trodes.
When the control is set at 0 (SOFT), short-circuit current
is the same as normal welding current. The 0 position
provides current characteristics associated with the Gas
Tungsten Arc Welding (GTAW) process.
When the control is set at 5, short-circuit current is
approximately half that of the 10 (MAX.) position but still
higher than normal welding current. The 5 position pro-
vides a moderate current increase for arc starting nec-
essary for certain types of electrodes and applications.
Select a setting best suited for the application.
The Arc Control pilot light turns on when the Mode Se-
lector switch is in the CC position indicating that the ARC
CONTROL is active.
IMPORTANT: The ARC CONTROL can be adjusted
while welding.
Dip
Switch
Cover
ST-113 509-A
OM-533 Page 3