WTC MedWeld 3005, Operator'S Manual

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• Functions #70 and #71: WELD PROCEED fault. Function
#70 pauses and waits for up to the specified number of
cycles nnn for the WELD PROCEED input to become
active. Function #71 operates the same way, but will wait
indefinitely.
Function #70 continues the sequence in No Weld mode to
inhibit weld current from flowing if the Weld Proceed
setup parameter is programmed as a FAULT. If this
parameter is programmed as an ALERT, it continues with
the sequence as normal.
• Functions #72 and 73: INSUFFICIENT LINE VOLTAGE
fault. Function #72 will wait in the sequence for up to the
specified number of cycles, nnn for the WELD PROCEED
input to become active. Function #73 waits indefinitely.
Function #72 continues the sequence in No Weld mode to
inhibit weld current from flowing if the Insufficient Line
Voltage setup parameter is programmed as a FAULT. If
programming this parameter as either an ALERT or
NONE, it continues with the sequence as normal.
• Function #79: SYSTEM COOLING fault. (As a safety
measure, the control cycles in No Weld to inhibit weld
current from flowing.)
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85 WAIT FOR NO INITIATE IF FAULT
This function tells the control to check if any faults exist. If
the output is de-energized (a fault condition is present), the
control waits 10 cycles in the weld schedule for the weld
initiate to be removed. This function should appear after
Function #78 (PROCESS WELD FAULTS) in the weld
sequence.
If the initiate is still present after 10 cycles, the control uses
the NO ZERO CROSSING SYNCHRONIZATION Fault to
indicate that a fault condition was active. (This is to prevent
the control from performing a repeat of the sequence after
receiving a fault reset signal.)