High Country Tek HFS-J-Bus - Manual (Page 12)

Electronic Controller Solutions for the Global Fluid Power Industry
Hydraulic Fan System Controller with SAE J1939 Interface
HFS-J User Guide
Part No:- 021-00158 Rev C HFS-J Hydraulic Fan System Controller User Guide Page | 12
Module Connection Descriptor:
Thermistor #1 Input ( Connector terminal 1 ):
This input is designed to accept a standard NTC thermistor OR a bi-metallic temperature switch. This input should be
used in conjunction with the 0V pin # 8 on the connector; the choice is made via the GUI.
If the switch input is selected through the GUI will allow the user to select either HI to LO OR Lo to HI operation.
If this input is NOT used, it should be de-selected by the GUI to avoid false input commands.
Thermistor #2 Input ( Connector terminal 2 ):
This input is designed to accept a standard NTC thermistor OR a bi-metallic temperature switch. This input should be
used in conjunction with the 0V pin # 9 on the connector; the choice is made via the GUI.
If the switch input is selected through the GUI will allow the user to select either HI to LO OR Lo to HI operation.
If this input is NOT used, it should be de-selected by the GUI to avoid false input commands.
CAN HI Input ( Connector terminal 3 ):
This is one wire of a twisted pair that connects the controller to the applications J1939 Bus. The cable should be
suitable for this type of data connection. Please observe Bus protocol rules and fit termination resistors if required by
your configuration
CAN LO Input ( Connector terminal 4 ):
This is the second wire of a twisted pair that connects the controller to the applications J1939 Bus. The cable should
be suitable for this type of data connection. Please observe Bus protocol rules and fit termination resistors if required
by your configuration
+Power Supply Input ( Connector terminal 5 ):
This terminal is the MAIN +Supply Voltage input on the controller. To provide the best possible noise resistance and
current capability, this input should be taken directly to battery Positive or power supply +V output using a large
current capacity cable.
NOTE:
Make sure the unit has an in-line fuse fitted to protect the system, the module and the warranty.
Fan Reverse select Input ( Connector terminal 6 ):
This is a momentary signal input and only required that the input be pulled to +Power Supply for approx. 500mS to
initiate the reverse sequence settings, This input is de-bounced in the module software to avoid false triggers.
Power Common Input ( Connector terminal 7 ):
This terminal is the MAIN 0V or Power Common input on the card. To provide the best possible noise resistance and
current capability, this input should be taken directly to battery negative or power supply 0V ( GND ) output using a
large current capacity cable.