High Country Tek HFS - Manual (Page 3)

Hydraulic Fan System Controller: HFS
This product has been designed specifically for Hydraulic Fan Drive control and gives the user new levels automation
while integrating seamlessly into a typical discrete cooling system.
It can control a hydraulically driven fan proportionally or in an ON/OFF manner based on user settings, system
configuration and cooling needs with three independent inputs ( zones ) that will interface with industry standard NTC,
two wire thermistors. Two (2) switch inputs, suitable for over temperature switches, retarder switches and air
conditioning clutch switches are also provided for added system flexibility
Standard features include a robust vibration, flame proof package, Waterproof single heavy duty connector ( DT15-
12PA Deutsch 12 pin header ), Alarms interface, intelligent diagnostics, self protection that enable the controller to
operate reliably under arduous environmental conditions and a „real-time‟ graphing and data logging facility that allows
the user to observe and then record several operating parameters that are saved in a common file format for later
examination in Microsoft Excel
® .
Local on-board diagnostic LED indicators are available for power ON, each thermistor input, Two on/off override inputs,
proportional output and a specific error code LED which all show through observation, the current status of the
controller and connected peripheral devices.
Easy to use „set-up‟ and diagnostic software that is provided with the unit, works in conjunction with the HCT „Opto
3000‟ interface unit to provide high speed data communications between the controller and the host computer and
runs on any PC with a Windows
® O/S platform.
Once the profile for a particular cooling requirement has been established, the software allows the developer to
up/download the complete personality into other blank controllers giving the user a high level of application specific
security and keeping company confidential information in-house.
The inputs can be configured to interface directly with pre-set range ON/OFF Bi-metallic temperature switches without
the proportional control offered by the thermistors but giving savings advantages where absolute accuracy is not
required and system cost is at a premium.
There are no external or onboard potentiometers, switches or adjustments for user settings to ensure controller
integrity and operation under harsh environmental and operator conditions.
The set-up software allows the controller to be very flexible regarding settings and system configuration with password
levels invoked to ensure that characteristics cannot be changed without the proper authority.
Each password level entered, affords the user more options and available settings that are kept transparent to the
operator or observer to avoid confusion.
ALL inputs and outputs on the controller are fully protected, continuously monitored and when connected, displayed by
the software in the „Status‟ window.
Readings are also taken and stored of highest temperatures seen in each active zone, supply voltages and other
parameters to allow event correlation and system diagnostics if required at a later date.
System Overview :
3