WTC MedWeld 3005, Operator'S Manual

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If the current never reaches the setup parameter limit, the
control will continue the schedule in Weld mode, but
generates a SLOW CYLINDER fault to indicate the condition.
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94 EXTEND WELD IF LOW CURRENT LIMIT FAULT
This function tells the weld processor to automatically repeat
the weld function if it detects a LOW CURRENT LIMIT fault.
This function must appear immediately after the PROCESS
WELD FAULTS function in the schedule. If it detects the
LOW CURRENT LIMIT fault, the control restarts the weld
schedule and generates the EXTEND WELD fault/alert
condition.
The control will repeat the schedule only once. If the desired
current is not provided on the re-weld, the control generates
a LOW CURRENT LIMIT fault/alert condition.
95 EXTEND WELD IF CURRENT LESS THAN nnnn0 AMPS
This function has the same result as Function #94, but
monitors secondary current instead of the LOW CURRENT
LIMIT fault.
If the secondary current provided during the schedule does
not reach the minimum value programmed, the control
restarts the weld schedule and generates the REWELDED
fault or alert condition. The control will repeat the schedule
only once. If the desired current is not provided on the re-
weld, the control generates a REWELDED fault.
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When it is in No Weld mode, the control bypasses these Extend Weld
functions. (The weld processor will not monitor the amount of current
provided, because the control is in No Weld.)
78 PROCESS WELD FAULTS
This function provides a one-cycle delay in the weld
schedule. It asks the MedWeld 3005 to indicate any faults that
may have been generated so far in the schedule.
The control normally processes all fault conditions at the end
of the weld schedule. This function allows forcing the control
to process fault conditions before it completes the weld
schedule. It should appear in the weld schedule BEFORE any
functions that check fault status or require current weld data.