APPENDIX F: RELAY TIMING DIAGRAMS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
F-2
990-665
END OF WELD
When welding, the relay output signal will start 0-150 milliseconds after the end of the
HOLD
period and
will stay energized for 350-450 milliseconds. * The relay will still close in case of an aborted weld.
*
If another weld is initiated within this time, the
END OF WELD
relay will be reset at the start
of the next weld.
ALARM
The relay output signal will start when the Control senses certain
ALARM
conditions (with the
exception
of
OUT OF LIMITS
alarms) and will stay energized until the
ALARM
state is cleared by pressing the
RUN
button (refer to
Appendix E, LCD Display Messages
).
