MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM047 Rev 13 05/03/30
32
Thomson Technology
The Generator Ready To Load output is typically used in an Auto Mains Failure
(AMF) application. Refer to
Section 9.3.5
for further details on sequence of
operation.
5.2.9. UTILITY READY TO LOAD
The designated programmable output relay will energize when the remote start
input has not been activated (i.e. contact on terminals 16 & 17 is not closed) and
the Return Delay & Neutral Delays have expired (if programmed). The output will
de-energize when the remote start input has been activated and the Engine Start
Delay & warm-up Delays have expired (if programmed). This output is typically
used for Auto Mains Failure (AMF) applications. Refer to
Section 9.3.5
for further
details on the sequence of operation.
5.2.10. ENGINE
RUNNING
The designated programmable output relay will energize when the engine has
started and has reached crank disconnect speed.
5.2.11. ENGINE RUN (FUEL)
The designated programmable output relay will energize when the engine ”RUN”
(i.e. FUEL) energizes prior to the engine starting. The output will remain on until
the engine has reached a “stop” or “shutdown” command.
5.2.12. AIRFLAP
The designated programmable output relay will energize when the engine’s
speed exceeds the overspeed setpoint level. The output will remain energized
until the engine’s speed drops below the low speed setpoint (typically 5% of rated
speed).
Note:
An external pilot relay will be required if the main air flap solenoid
current rating exceeds the MEC 20 contact rating.
5.2.13. ATS
TEST
NOTE:
This control feature is only operative if a remote
transfer switch is interconnected with remote
testing capability.
