High Country Tek HFS-J-Bus - Manual (Page 22)

Electronic Controller Solutions for the Global Fluid Power Industry
Hydraulic Fan System Controller with SAE J1939 Interface
HFS-J User Guide
Part No:- 021-00158 Rev C HFS-J Hydraulic Fan System Controller User Guide Page | 22
Controller Set-up Cont:
Each J1939 input has two on-screen indicators that are green when within limits and red when there is an
issue. The first indicator is called ‘Timeout’. This is monitoring the health of the J1939 Bus and in particular,
the message associated with the PGN number being used. If the Bus data is corrupted or late, this indicator
turns red to indicate a data or timing fault and can be used for diagnostics.
The second indicator shows when the temperature being measured exceeds the ‘Fan Alarm Temperature’
setting. This is a visual aid intended to show the user that there is an issue with the cooling on the associated
channel.
The state of these indicators is connected to the alarm output such that any red status will trigger the output to
drive an external alarm annunciator if connected.
There are an additional two (2) external inputs provided that can be selected to be either a recognized sensor
or a temperature switch. Instructions on how to use these become available when the user clicks the ‘Setup’
button associated with these features.
 NOTE:
After ANY change is made to the settings that need to be kept, the ‘Apply’ button MUST be clicked to
allow the module to accept the new values. Clicking ‘Cancel’ or selecting a new TAB will void any
changes made.
The user can also view the controller operation via the graph window as well as note any change on state or
error that is presented by observing the ‘Status’ window text if the scroll option is turned ON.
While in this tab, the user can switch to any other tab by selecting it from the top of the page.
• Temperature settings:
There are up to five ( 5 ) temperature inputs into the HFS-J
that can be individually enabled or disabled as required,
three ( 3 ) come directly from the J1939 Bus, and are :
 Engine coolant at PGN 65262,
 Transmission Oil temperature at PGN 65272 and
 Intake manifold Temperature at PGN 65270 and do
not need any external sensors for information.
Output current to the fan speed control valve is controlled
between ‘Fan Start Temperature’ and ‘Fan max
temperature’ and is a linear line between these two user
set values.