Air-gate: The air-gate output is used to control an air damper and only actuates for a fixed
10 seconds immediately after an Over-speed Failure occurs. This feature is used
for some Diesel engines that cannot be stopped quickly enough by merely shutting
off the Fuel in the event of an Over-speed condition. An electrically operated air
damper is installed at the air intake, which effectively ‘gags’ the engine to a stop.
Refer to engine’s manual for more information.
Slow: This function is adjustable from 0 - 256 seconds via the “Timer” pot. The
“Timer” output energizes when engine speed goes above Crank Disconnect speed
(engine starts), and remains so for the prescribed duration. It is called “Slow”
because it would, presumably, be used to tell a governor to ‘go slowly’; for such
applications as irrigation pumps, where running slowly for the first minute or two
prevents ‘water hammer’.
The timer settings are as specified in the following table.
2.5.5 Adjusting Timer Duration
(Glow Plug and ‘Slow’ only, as Air-gate and Choke do not use pot) (0 - 32 seconds For
Glow Plug and 0 - 256 seconds for slow)
For the Glow Plug setting (DIP switches 7 & 8 off):
a) Remove wires connected to the Timer terminal #12 and Crank terminal # 5.
b) Apply power to Start/Stop terminal # 10.
c) Measure the time the “Timer” LED remains ON.
d) Remove power from Start/Stop terminal # 10.
e) Increase or decrease pot setting as required. Resolution is 1.6 seconds/turn.
f) Return to step b.
For the slow setting (DIP switches 7 & 8 on):
a) Apply power to Start/Stop terminal # 10.
b) Allow the engine to Crank and start, Engine Running LED turns ON.
c) The “Timer” LED will illuminate, measure the time that the LED remains ON.
d) Increase or decrease pot setting as required pot resolution is 12.8 seconds/turn.
e) Return to step a.
Re-connect wires to the Timer terminal #12 and Crank terminal # 5 before proceeding to Step 5.
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