High Country Tek HFS-2Q - Manual (Page 17)

Hydraulic Fan System Controller : HFS - 2
Alarm Output :
This low side on / off output is able to output 3.3A current maximum, and is capable of driving inductive or resistive
loads and is Protected against shorted and misfired loads with shorted load detection only able to be detected when
driven.
The output has two modes of operation, ‘Steady ON ‘ and ‘Pulsing ON/OFF’.
The ‘Steady ON’ mode is linked to NON critical errors or those that would allow the unit to keep functioning. This type
of error can be dealt with in due time.
The ‘Pulsed ON/OFF’ state is intended to show that a critical error has been detected and that the controller/system
MUST be stopped and examined immediately or damage may result.
The facility exists to allow the user to ‘LOG’ data of the thermistors and several other controller functions for later or
fault / trend examination.
The files can be individually named to suit the application and is suffixed with a *.csv extension for direct and easy
Data Logging Option:
The unit records the controller serial number, date first setup (born date) with a PC, highest supply voltage, the
highest temperature of each thermistor input (other than during calibration) and the highest module temperature.
The user can not reset these values without a password
The files can be individually named to suit the application and is suffixed with a .csv extension for direct and easy
reading into Microsoft
® Excel ® for graphical plotting and mathematical calculations as required.
Internal Data Logging:
The user can not reset these values without a password.
Shorted or open thermistor faults will not be recorded as a high temperature.
The connectors used on the HFS-2 controller are Weidmuller two part, polarised, heavy duty screw variety to suit the
intended ‘in-cab’ application environment while still allowing easy cable access, installation, pre-harness assembly
and normal maintenance
Connectors – HFS-2 and HFS-2Q:
and normal maintenance.
The controller comes complete with all the connectors, male ( on the unit ) & female user wire connections,
necessary for immediate installation.
Connector:- Weidmuller style SLA and BLS.
The HFS-2Q option offers the user the choice of Weatherpack sealed connectors, with a 6 way for thermistor inputs
and 2 x 4 way for all other connections, allowing the controller module to be mounted in an external environment.
The user can also specify any other connector required to match the intended application arena, please contact the
HCT factory for further details.
This is a timed function and is intended to allow the vehicle to be started and running before applying the extra the
load of the hydraulic fan and associated hydraulic pump demand
Startup Delay Feature:
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load of the hydraulic fan and associated hydraulic pump demand.
The delay time can be adjusted in the set-up software and is calibrated in seconds from zero (0) to a maximum of
60S.
This feature is initiated at every power ON/OFF cycle.