WTC MedWeld 3005, Operator'S Manual

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Message Explanation Possible Cause Remedy
Control in
No Weld
(See p. 6-8)
The control moved
from Weld Mode to
No Weld Mode while
executing a weld
schedule. Robot or PLC ladder logic
de-activated the WELD/NO
WELD input. Check robot or PLC ladder to
verify that the input is being
held HIGH throughout the
schedule. (Use the DEP I/O
Status display to observe the
status of this input.)
Data entry device is pro-
grammed in No Weld mode. Verify that the data entry device
is in Weld Mode.
Loose or incorrect wiring to
the input module. Check for proper I/O designa-
tions. Check to make sure all
wiring connections are secure.
Faulty input module. Replace module.
Weld Current
Shunting
(See p. 6-8)
Back-feeding EMF is
causing a voltage
drop across the
transformer, but no
measurable current is
flowing in the primary. In a multi-gun configuration,
guns from two different trans-
formers or controls are touch-
ing or conducting through the
work piece. Check for touching weld guns;
Remedy as necessary.
Improper grounding of
welding tool. Insure proper grounding of the
transformer, fixture and control.