MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM056 Rev 6 05/10/15 Thomson Technology
46
8.3.5.4.MEC LOAD TEST PUSHBUTTON 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 controllers 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 Warmup timer is initiated.
• Once the Warmup 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.
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