Download 500DP and 875DP Technical Manual

CHAPTER 4: GETTING STARTED
Figure 4-2. Typical Solenoid Air Valve System with
a Single Regulator
5
Unlock the regulator(s) by pulling the red ring up. Set the air gauge(s) for 25 psig. Fully open both
flow controls.
6
The operational sequence with an air head is as follows:
The first level of a 2-Level foot switch actuates the weld head, moving the electrodes together.
The weld period cannot begin until the second level of the foot switch and the force firing switch
in the weld head close. The power supply will enter a standby state until these conditions are
met. When the firing force is reached, the weld period will start. Assuming that an alarm does
not occur, the welding sequence will continue to completion and the weld head will rise at the
end of the hold period. If FOOT SWITCH WELD ABORT is ON, releasing the foot switch at
any time during the welding sequence will terminate the sequence.
875DP/500DP/500HV DUAL PULSE
RESISTANCE WELDING POWER SUPPLIES
990-290
4-3