Weld Schedules
4 - 12
Modified: 9/25/08
MedWeld 4000 Operator’s Guide
M-032116 Programs #T03300, #T02300 and #T02400
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 weld function in
the schedule. If it detects the LOW CURRENT LIMIT fault, the
control restarts the weld
function
and generates the EXTEND
WELD fault/alert condition.
The control will repeat the weld function above the extend
only
once
. If the desired current is not provided on the re-weld, the
control generates a LOW CURRENT LIMIT fault/alert condition.
NOTE:
An example of using an extend function is shown below in the
following schedule of functions.
(Your application requirements
may vary from this schedule, please use this as an example only.)
START OF SCHEDULE #01
54
TURN ON VALVE #1
01
SQUEEZE 15 CYCLES
30
WELD 08 CY. 04000 AMPS
94
EXTEND WELD IF LOW CURRENT LIMIT FAULT
78
PROCESS WELD FAULTS
03
HOLD 02 CYCLES
55
TURN OFF VALVE #1
03
HOLD 10 CYCLES
END OF SCHEDULE #01
The bold text above for the extend function can be substituted with
any extend in your software. It is important however that the
EXTEND function is
immediately
after a weld function (as shown
above) if you require the welding control to extend a weld.
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
function
and generates the EXTEND WELD fault or alert
condition. The control will repeat the weld function above the
extend
only once
. If the desired current is not provided on the re-
weld, the control generates an EXTEND WELD fault.
NOTE:
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
.)
