Setup Parameters
MedWeld 4000 Operator’s Guide
Modified: 9/17/08
5 - 5
M-032116 Programs #T03300, #T02300 and #T02400
EXTENDED WELD:
(FAULT) (ALERT)
This fault is generated under one of two conditions, based on which
REWELD function appears in the weld schedule:
•
If the schedule contains the function REWELD IF CURRENT
LESS THAN 00000 AMPS, this indicates that the control was
not able to provide the desired secondary current during the
weld, and performed an unsuccessful reweld.
•
If the schedule contains the function REWELD IF LOW
CURRENT LIMIT FAULT, this indicates that the control
performed a reweld, and the desired current
was
provided
during the reweld.
ISO CNTR OFF WHEN NEEDED:
(FAULT)
The isolation contactor was not pulled in when required by the weld
schedule. This parameter is NOT programmable.
This fault is generated when the control detects that the isolation
contactor is open when it is trying to execute a weld function. (The
contactor must be closed to provide weld current.)
On detecting this condition, the control schedules in No Weld and
generates this fault condition. If the control is in No Weld mode, it
does not generate a fault.
CURRENT COMPENSATION LIMIT:
(FAULT) (ALERT)
(
T03300 only
) (NONE)
The secondary current provided to a weld is monitored each cycle
during an ACC weld function, to provide the desired current to a
weld. If necessary, the control adjusts the current provided based on
the current read during the previous cycle.
This fault occurs if the control hits a firing limit while trying to
obtain the desired current, indicating that it could not compensate
for the current drop. It can also occur of the amount of current
programmed in the weld function causes the control to fire below
20%I.
ISO CNTR ERR-BRKR TRIPPED:
(FAULT)
This fault is generated when the MedWeld 4000 signals to open the
isolation contactor (to cut off weld current) but the isolation
contactor did NOT open. It can also occur if the isolation contactor
is pulled in when a weld initiate is not present.
NO ZERO CROSSING SYNC:
(FAULT)
This condition is generated when the control is unable to
synchronize with the line voltage. This parameter is NOT
programmable. This fault is observed when the circuit breaker is
turned off or tripped.
