10
FIGURE 4-12. Pulser switch.
ON:
In this position the output current from power source will be in pulsed mode in accord to
backup and peak amperage values.
OFF:
In this position the power source disables the pulsed mode, but the amperage level are
set by controlling the peak amperage.
IMPORTANT
The switch may be placed in position on or off before or during the welding process.
4-1A. PULSER CONTROLS
.
Figure 4-13 %On time control.
The % ON TIME control provides a means of selecting the pulse width. Rotating the control clockwise
increases the peak output time in relation to the entire pulse time as set on the PULSES PER SECOND
control. The scale surrounding the control is calibrated from 5 to 95 percent and represent the peak
output on time during one pulse.
IMPORTANT:
The
% ON TIME
control may be adjusted while welding.
ON
OFF
1.- CRATER TIME CONTROL
Use control to set time to taper weld ouput from
setting of the amperage adjustment control to
the minimum of the unit.
2.- CRATER TIME SWITCH
ON-
Provides Crater time
OFF-
Provides No Crater time
Place switch in the OFF position for SMAW.
Figure 4-11 Crater Time Controls.
1
2
To use crater time circuit
Connect Remote control device
PANEL
REMOTE
ON
REMOTE
OUTPUT CONTACTOR
PULSER
SWITCH
ON
ON
ON
ON
ON
OFF
OFF
REMOTE CONTROL
SWITCH POSITION
ON or OFF
ON or OFF
ON or OFF
OFF
ON
ON or OFF
ON or OFF
WELDING POWER SOURCE
OUTPUT (CONTACTOR)
SWITCH POSITION
ON
REMOTE
ON
REMOTE
REMOTE
REMOTE
ON
OPENCIRCUIT
VOLTAGE
AVAILABLE
AVAILABLE
AVAILABLE
NOT AVAILABLE
AVAILABLE
NOT AVAILABLE
AVAILABLE
TABLE 4-1
AVAILABILITY OF OPEN-CIRCUIT VOLTAGE WHEN WELDING
POWER SOURCE IS ENERGIZED
Summary of Contents for ALPHA TIG 252 - DP
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