High Country Tek HAU Series - Manual (Page 7)

HAU Product Manual
High Country Tek, Inc.
208 Gold Flat Court
Nevada City, CA, 95959.
Tel:- (1) 530 265 3236
www.hctcontrols.com 021-00140_HAU_User_Guide_Rev_Bp2 7/10
When the coil heats up in use, it increases its resistance.
Most coils will still be able to draw sufficient current to fully shift the valve if their rated voltage is supplied
to the card and the card on maximum output causes less than 1V drop.
When this is not the case, you must use a coil rated for less voltage or increase the power supply voltage.
The card will have no trouble driving a 12 V coil from a 24 V supply, or a 10 V coil from a 12 V supply for
example.
You may need a new controller if the new coil draws more current than the controller is able to supply,
based on the current range decided when ordered.
If the valve shift is erratic:
Electrical interference on the command signal control lines can cause erratic behavior if it is strong
enough i.e. high wattage CB or Walkie-Talkie being used near the installation.
Try changing the routing of the control wires to see if the problem changes.
Power supply interference or brown outs can also cause erratic behavior. Test for this by running the
card off its own fully charged battery.
Controller Mechanical Details:
HAUKRF140
Serial # D0000x
I Max
I Min
Ramp UP
Ramp DOWN
Dither Amp
Dither Freq
VR
ef
Vo
lt
Cu
r
SIG
C
om
PW
R C
om
-Co
il
+Co
il
+P
ow
er
PW
R
PWM%
2.30
2.92
2.
00
0.51
2.
82
0.31
1.46
0.64
1.15
Notes:
• All dimensions in inches
•
Unit weight is approx. 350 grams
• Mounting is via 3 x No. 8 holes ( 4.5mm ) on to flat surface
•
Unit shown with ALL potentiometers possible
• ALL potentiometers are 10 turn variety with end ‘clutch’