MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM047 Rev 13 05/03/30
52
Thomson Technology
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
•
Once the engine has started and the generator output rises above the
programmed voltage and frequency limits, a warm-up timer is
initiated.
•
Once the warm-up timer expires the Utility Ready to Load output de-
energizes and the Neutral Delay timer is initiated.
•
Once the Neutral Timer expires the Gen Ready To Load output
energizes to signal the transfer switch to transfer to the generator
supply.
Note:
if a generator shutdown occurs during a Load Test
Operation, the Load Test mode will be de-activated.
When the MEC mode is re-selected to Auto Mode, the following
sequence occurs:
•
Simulated Remote Start input signal is removed
•
Gen Ready To Load output de-energizes, and 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.
•
The generator Cooldown timer starts timing following the transfer
to the utility supply.
•
The generator stops following expiry of the Cooldown timer.
