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CHAPTER 5: OPERATING YOUR POWER SUPPLY
7.
With the DATA keys, enter the example weld time of 5 milliseconds (05). In making
your trial welds, you will want to start out with a short time period and increase it in
small increments as necessary.
8.
With the CURSOR keys, move the cursor to display CO field (cool time).
9.
With the DATA keys, set the cool time to zero (00). You would need to set a value
for cool time to accommodate Weld 2; that value would depend on the weld piece
material and the amount of weld heat generated for Weld 1 (the duration and
amplitude of Weld 1 energy).
10.
You will now need to set the control feedback mode. Under normal circumstances,
you would want to start your trial welds in the Constant Current Control mode. With
the CURSOR keys, move the cursor to the display I.V.W field (control mode
selection).
11.
With the DATA keys, scroll the selections to I (the Constant Current Control mode).
12.
With the CURSOR keys, move the cursor to the display HEAT 1 field (weld current
value for Weld 1).
13.
With the DATA keys, enter a low current value to start trial welding, say 0.5 KA
(0.50).
NOTE: The HEAT 1 and HEAT 2 fields are control mode dependent. If you select
the Constant Voltage Control mode (V) or the Constant Power Control mode (W), the
HEAT 1 and HEAT 2 fields become relative to voltage (V) or power (KW).
14.
With the CURSOR and DATA keys, set the remaining (Weld 2) values to zero.
Monitoring Power Supply Operation
The Power Supply monitoring function allows you to view, via the Weld Heat display screen, the
actual amount of heat delivered during both Weld 1 and Weld 2 for a selected weld schedule.
With this information, you can refine parameter settings as necessary following a weld to
optimize the weld parameters.
The monitoring function also oversees operation of the Power Supply. Where errors occur, the
display screen presents an error message and the Power Supply outputs an error signal for
external equipment to monitor.
Monitoring Weld Heat Limits. Assume that you wish to monitor the weld heat
limits for the example weld schedule that you previously programmed in this chapter under
IP-215A/IP-217A FINE SPOT WELDING POWER SUPPLIES
5-4
993-603 REV A: October, 1995
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