SanRex SANARG 200AP, Operator'S Manual

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SECTION 7 – VOLTAGE REDUCTION DEVICE
7.0 VOLTAGE REDUCTION DEVICE (VRD)
The 200AP unit is equipped with a Voltage Reduction Device circuit that when
enabled lowers the Open Circuit Voltage (OCV) in STICK mode. This function is used in
applications where a high OCV in STICK mode is dangerous or applications where a lower
OCV would be advantageous. The 200AP unit is shipped from the factory with the VRD in
the disabled mode. To utilize the VRD, the user must enable the VRD function.
7.1 VRD SPECIFICATIONS
Description
SANARG
200AP
Notes
VRD Open Circuit Voltage 15.3 to 19.8V Open circuit voltage between welding
terminals.
VRD Resistance 148 to 193 ohms The required resistance between welding
terminals to turn ON the welding power.
VRD Turn OFF Time 0.2 to 0.3 seconds The time taken to turn OFF the welding power
once the welding current has stopped.
7.2 SWITCHING VRD ON/Off
Switch the machine OFF.
a) Remove the clear plastic cover from the control panel (see Figure 7-1).
•
Lift up the cover so it rests on the top of the unit.
•
Place a small flat bladed screw driver between the cover hinge on the front panel.
•
Gently lift the cover hinge out of the front cover mounting hole.
•
Remove the control’s clear plastic cover.
Figure 7-1 VRD ON/OFF Step A