CONTROLS, INCORPORATED
C O N T R O L S Y S T E M S & S O L U T I O N S
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h.
Engine Run - Relay will be active when engine RPM is greater than 600. Typically used
to drive an auxiliary circuit such as louvers or send a signal to a monitoring station.
i.
Switch Trip - Relay will be active if digital input is active.
j.
Fuel / Run - Relay will be active during an engine start request and while the engine is
running. Used to drive the engine’s ECU circuit. Also active when requesting active and
stored J1939 codes.
k.
Custom 1 - Reserved for OEM applications.
l.
Preheat - Relay will be active during programmed preheat period. Used to drive a
preheat relay.
RELAY POLARITY
a.
Positive - Relay acts as a normally open contact.
b.
Invert - Relay acts as a normally closed contact.
RELAY INITIAL STATE
a.
On - Relay is activated upon power up.
b.
Off - Relay is not activated upon power up.
