Electrical Connections/Single Speed Control
© 2019 EMP, Inc. 9
Electrical Connections
The power input is a 12V or 24V DC (nominal) source depending on the component model. The ignition enable
is a switched power source which is sent from the vehicle or system to initiate operation of the component. This
can be wired directly to a vehicle ignition, to a PLC output, through a manual switch or through a thermal switch.
This line will draw less than 10 mA of current. All switches on this line can be sized based on this amperage
requirement. This input should be fused close to the source to protect the vehicle or system wiring.
The following sections provide information about how to implement supported control strategies. The CAN and
temperature input strategies require additional pin connections.
On/Off Single Speed Control
NOTE: All cavities in the mating connector(s) must either be terminated or
plugged to prevent moisture from entering the component.
NOTE: 10 AWG wire can be used for power and ground.
Example On/Off Application Schematic
Operation
When power is on and ignition enable is on, the component will run in an on/off, single speed manner. The speed
at which the component will run will be the pre-configured default speed. EMP also provides a “Power Hold”
option which can keep the controller running for a specified amount of time after the ignition enable has been
removed. This allows for post-shutdown cooling.
NOTE: For assistance with component calibrations and settings, please contact EMP Technical Service at
service@emp-corp.com
and provide a serial number for the part in question.
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