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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RELAY FUNCTIONS
Available relays can be assigned for different uses.
a.
None - Assign to “none” when not used.
b.
Pre Alarm - Relay will be active when there is a pre alarm condition. Typically used to
drive an alarm horn or lamp. Can be used to send a signal to a monitoring station.
c.
Alarm - Relay will be active when there is an alarm condition. Typically used to drive
an alarm horn or lamp. Also can be used to send a signal to a monitoring station.
d.
Pre Alarm & Alarm - Energizes an external audible alarm when a pre alarm or alarm
condition is present. Pressing the ENTER button will silence.
e.
Alarm Horn - Energizes an external audible alarm when an alarm condition is present.
Pressing the ENTER button will silence.
f.
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.
g.
Low Oil Press Alarm - Relay closes if a low oil pressure shutdown is detected.
h.
High Coolant Temp Alarm - Relay closes if a high engine temp shutdown is detected.
i.
Over Speed Alarm - Relay closes if an over speed shutdown is detected.
j.
Over Crank Alarm - Relay closes if an over crank alarm is detected.
k.
Low Fuel Level Alarm - Relay closes if a low fuel level shutdown is detected.
l.
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.
m.
Custom 1 - Reserved for OEM applications.
n.
Throttle B0 - Reserved for OEM applications.
o.
Throttle B1 - Reserved for OEM applications.
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.
