Download mec 20 microprocessor engine/ generator controller

MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
function is only operative with an electrically-held type
transfer switch mechanism (i.e. electrical contactor type).
9.3.5.3.
UTILITY POWER RETURN:
•
Remote Start input signal is removed and the Return Delay
timer is initiated (i.e. Utility Voltage returns to normal and
the Utility voltage sensor contact opens)
•
Once the Return Delay timer expires, the Generator Ready
to Load output de-energizes and the Neutral Delay timer is
initiated.
•
Once the Neutral Delay timer expires the Utility Ready to
Load output energizes to signal the transfer switch to
transfer to the utility supply. Note: If the generator has a
shutdown during the Return or Neutral Delay periods, the
timers are bypassed, and the Utility Ready to Load output
immediately energizes.
•
The generator Cooldown Timer starts timing following
expiry of the Return Delay timer.
•
The generator stops following expiry of the Cooldown
Timer.
9.3.5.4.
MEC LOAD TEST PUSH-BUTTON OPERATION
NOTE:
The following sequence as described is
applicable only if both “Utility Ready to
Load” and Gen Ready to Load” outputs are
programmed and used.
•
When the MEC Load Test pushbutton is pressed, the
controller’s logic will internally simulate receiving a remote
start input.
•
Engine starts following expiry of the Engine Start delay
timer
PM047 Rev 11 2002/09/09
53
Thomson Technology Inc.