High Country Tek HFS-3 - Manual (Page 12)

Hydraulic Fan System Controller – HFS-3-12v
12
Adjustment Guide:
NON-Inverting valve control operation.
Output Characteristics: NON Inverted Valve operation.
I Max 100%
I Max 75%
I Max 50%
90%
PWM
10%
PWM
1200mA ( Max )
0%
PWM
100%
PWM
This graph shows the typical
adjustments for the PWM input
signal
Typical input / output current linearity graph of this controller.
0%
20%
40%
60%
80%
100%
110%
O
u
tp
u
t
Curre
n
t
m
A
0% 20% 30% 40% 50% 60% 70% 80% 100%
PWM input %
10% 90%
Typical characteristic of a normal
pressure or flow control valve or
variable
piston pump Electro-
hydraulic stroker. This option will
NOT allow
‘fail-to-full-speed’ safety
operation.
It is strongly recommended that the
INVERTED
option is used in
conjunction with a reverse operating
pressure
control valve to allow
‘fail-to-full-speed’ operation.