High Country Tek HFS-2Q - Manual (Page 3)

Hydraulic Fan System Controller : HFS - 2
System Overview :
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.
Standard features include a robust vibration, flame proof package, 2 part or ‘Q’ option connectors that provides
either easy harness assembly or Waterproof heavy duty connections, both polarized to avoid mis-connections,
Alarm output interface, intelligent diagnostics, internal self protection that enables the controller to operate
reliably under arduous environmental conditions and a ‘real-time’ graphing and data logging facility that offers the
user option to observe and then record several operating parameters that are saved in a common file format for
later examination in Microsoft Excel
® .
L l b d di ti LED i di t il bl f ON h i di id l th i t i t th Local on-board diagnostic LED indicators are available for power ON, each individual thermistor input, the
proportional output , reverse input and reverse valve output status 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
2000’ 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 if desired, can also 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.
3