High Country Tek, Inc. Hydraulic Fan System Controller - HFS-3-24v Electro-Hydraulic Solutions for Mobile, Industrial & Marine Applications. Hydraulic Fan System Controller – 24V – 600mA Application, Set-up & Information Manual. Part No.
Hydraulic Fan System Controller – HFS-3-24v Important Notes: This product has been designed by High Country Tek, Inc ( HCT ) to interface directly with any manufacturers range of proportional pressure and/or flow control valves, variable pumps, motors and manifold blocks currently available for this type of system. Please contact the factory by the e-mail address given below or nearest High Country Tek, Inc. distributor for further technical information and availability.
Hydraulic Fan System Controller – HFS-3-24v Product Overview: This driver unit has been designed to interface and operate with:• Wide supply range 18VDC to 32VDC ( 24V nominal ) • Engine Control Unit ( ECU ) 5% to 95% PWM output with 0.5 to 4.5V ( based on 5V maximum ) and • PWM frequency input from 20 – 125Hz. • Fan system control manifold blocks. • Vane and Gear motors with internal or external pressure control valves. • Piston pump with remote compensator using proportional pilot pressure valves.
Hydraulic Fan System Controller – HFS-3-24v Important Notes: ALWAYS - Take a few minutes to FULLY read THESE information / data sheets BEFORE starting. ALWAYS - Keep High Voltage AC cables separate from Low Voltage DC signal and supply cables. ALWAYS - Make sure the unit supply voltage is the same as the coils on the valve being driven ! ALWAYS - Ensure that you are aware of the available adjustments and consequences on the electronics and hydraulics.
Hydraulic Fan System Controller – HFS-3-24v Important Notes: High Country Tek, Inc ( HCT ) recognizes that fan drive systems are an important part of the protection needed for the engine and associated peripheral components to ensure maximum reliability, productivity and long term operation.
Hydraulic Fan System Controller – HFS-3-24v TOP VIEW OF PLUG DRIVER WITH LID REMOVED. Note: The output ramp UP and DOWN rate is decided by the engine ECU rate of change to the PWM signal. The HFS3 controller is designed to track and follow this command as closely as possible to give optimized fan speed operation. ‘Output ON’ led Dither Frequency Adjustment.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: INVERTED valve control operation ( Default setting ). INVERTED operation means that the output current is inverse to the input command signal. i.e. 10% PWM = Max O/P 90% PWM = Min O/P This option is intended for use with a reverse acting proportional control valve. In this configuration, if the power supply fails, the fan unit will default to the FULL ON speed.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: INVERTED valve control operation ( Default setting ). • Adjust Dither frequency to suit valve product being driven. • Fully Anti-clockwise = approx. 100Hz • Fully Clockwise = Approx.... 250Hz. • Set command to Zero Volts. • Isolate plug from +24VDC supply. • HFS-3-24v Plug top controller is now set. • Replace opaque lid carefully ensuring that seal is maintained.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: INVERTED valve control operation. Typical characteristic of an inverted pressure control valve This option will allow ‘fail-to-full-speed’ safety operation. Output Characteristics: INVERTED Valve operation.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: NON-INVERTED valve control operation. NON-INVERTED operation means that the output current follows the input command signal. i.e. 10% PWM = Min O/P 90% PWM = Max O/P This option is intended for use with a proportional flow control or variable pump electro-hydraulic stroker. In this configuration, if the power supply fails, the fan unit will default to the OFF speed.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: NON-INVERTED valve control operation. • Adjust Dither frequency to suit valve product being driven. • Fully Anti-clockwise = approx. 100Hz • Fully Clockwise = Approx.... 250Hz. • Set command to Zero Volts. • Isolate plug from +24VDC supply. • HFS-3-24v Plug top controller is now set. • Replace opaque lid carefully ensuring that seal is maintained. • Replace securing screw and tighten • Do not over tighten or lid damage is seen.
Hydraulic Fan System Controller – HFS-3-24v Adjustment Guide: NON-Inverting valve control operation. Typical characteristic of a normal pressure or flow control valve or variable piston pump Electrohydraulic stroker. This option will NOT allow ‘fail-to-full-speed’ safety operation. It is strongly recommended that the INVERTED option is used in conjunction with a reverse operating pressure control valve to allow ‘failto-full-speed’ operation. Output Characteristics: NON Inverted Valve operation.
Hydraulic Fan System Controller – HFS-3-24v Block Diagram: I Min adjust +V Supply GND (0v) I Max ( 20 Turn potentiometer ) PWM ‘ f ’ generator Internal PSU Ramp Generator ‘Dither’ ( PWM ) frequency adjust PWM F.E.T.
Hydraulic Fan System Controller – HFS-3-24v Connection Options: +24VDC ( +18 to +32V max ) RED BLUE Rubber gasket 0VDC YELLOW GREEN PWM 0V output + PWM output Engine Control Unit ( ECU ) Proportional Valve Coil +24VDC ( +18 to +32V max ) RED BLUE Rubber gasket 0VDC YELLOW GREEN PWM 0V output Proportional Valve Coil NO + PWM output NC Emergency Fan STOP relay configuration.
Hydraulic Fan System Controller – HFS-3-24v Mechanical Information: 68mm 40mm 34mm View showing connector configuration. Mechanical specifications. Housing Type:Housing Material:Housing Colour:Surface Finish:Housing Thickness:Lid material:Lid Colour:Lid finish:Unit size:Unit Weight:Wire entry:Encapsulation:Wire length:Wire specification:- Self contained DIN 43650 ‘Plug Top’ High Impact Resistant Molded ABS. Black / dark Grey. Matt. 2mm ( Mounting Flange and Face ), 1.7mm All Internal Dividers.
Hydraulic Fan System Controller – HFS-3-24v Assembly Information: Rubber gasket seal in lid recess. M3 x 40mm mounting screw Liquid tight cable outlet If required, Apply ‘lithium grease’ under lid ( fill ) and between driver plug base, gasket and valve coil connector. Driver plug base to valve coil rubber gasket supplied ( loose ) Harsh Environment Information: • Use care when re-assembling unit after adjustment and ensure that lid gasket is in place.
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Hydraulic Fan System Controller – HFS-3-24v High Country Tek, Inc has been working with the fluid power industry for many years, solving the tough problems and producing unique and mechanically robust products that continue to work reliably in the most extreme and hostile environments that we see hydraulics being applied in today. Our controllers are ALL designed, manufactured and tested in the U.S.A. and can be sent anywhere in the world.
