This one controller now offers the bus and public transportation sector a very cost effective solution for all of the features and benefits associated with hydraulic fan cooling, while offering all the advanced safety features normally required in this market.

All inputs and outputs are fully protected against opens and short circuits with the valve PWM signal being modulated using SAE J1939 data signals and/or a discrete temperature sensor with user selectable settings for fan reverse and an alarm system interface.

The controller comes with a momentary 'Heat-Event' trigger input that interfaces with the engine bay installed heat detection circuit and directly forces the output to immediately drive to minimum fan speed for safety.

HFS-J-Bus Product Features:

  • Pre-written Graphical User Interfaces for all modules
  • Operates with all OEM electro-hydraulic equipment
  • Sealed and protected to >IP67 ( NEMA 6P )
  • Unique 'Solid' potting with flame retardant materials
  • SAE J1939 & 1 x external discrete thermistor/switch contact
  • Heat event trigger switch input (drives to min fan speed)
  • Uni-direction fan control
  • Suitable for new OEM build or Repower / Retrofit / Upgrade applications

Item HFS Series Description

Hydraulic Fan System Controller for Off-Road Mobile Equipment Closed loop fan controller with reversing (purge), SAE J1939 CAN messages, and optional fire switch

Analog Inputs

Coolant "Wet" temperature sensor
Air "Dry" temperature sensor -#2 optional fire switch
Digital Input 1 On/Off switch - Fan speed override (software selectable)

CAN bus, SAE J1939

Pre-defined messages for charge air, transmission oil and water temperature
Proportional Output 1 0 to 3 Amps (Max)
Digital Outputs 2 On/Off Reverse and Alarm up to 3 Amps (Max)
Reverse cycle (purge) feature Yes, see a short video demonstration Lo to Hi logic input with software de-bounce
Connector 12-Pin Deutsch  
Mating Connector Kit P/N: 999-10155 Deutsch DTF15-12PB

Graphical User Interface (GUI)

P/N: 023-00264
Set-up & Diagnostic Software - Free Download (rev E and above)
P/N: CD-HFS-J-BUS Set-up & Diagnostic Software - CD Only
HFS-J Programming Cable P/N: 999-10075 2 Meters long with RS232 connection
Physical 94L x 94W x 13H mm 3 x # 8 Mounting screws
NEMA/IP Rating 6P/IP67 Solid Potted - derated for connector as required
Temperature ºC -40 to +85 Deg. C Operating
Voltage 9 to 32 VDC Reverse polarity protection and transient protection
Certifications CE Declaration of conformity