THOMSON MEC 2 - V1.4 - Page 33

MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM056 Rev 6 05/10/15 Thomson Technology
28
5.2.2. SWITCH NOT IN AUTO
The designated programmable output relay will energize when the controller's
operation mode switch is not
in the auto position.
5.2.3. ENGINE READY
The designated programmable output relay will energize when the engine
controller's mode switch is in the auto mode and no shutdown or alarm
conditions are present.
5.2.4. PREHEAT
The designated programmable output relay will energize during the start delay
timer period and cranking period until the engine starts and reaches crank
disconnect speed. The preheat output is typically used for an engine starting aid
such as glow plugs. Note: An external pilot relay is required to switch the high
current glow plug load.
5.2.5. GEN READY TO LOAD
The designated programmable output relay will energize when the generators
voltage and frequency exceeds predetermined setpoints (e.g. voltage 90%
nominal, frequency 95% nominal as user programmed) and a warmup time delay
period expires. Once the output has energized, it will remain latched on
irrespective of voltage/frequency levels until the controller either has a
stop/shutdown signal, or the engine’s speed drops below crank disconnect level.
The voltage, frequency and time delay levels are programmable. Refer to Section
9
for PROGRAMMING.
The Generator Ready To Load output is typically used in an Auto Mains Failure
(AMF) application. Refer to Section 8.3.5
for further details on sequence of
operation.
5.2.6. 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 & Warmup Delays have expired (if programmed). This output is typically