High Country Tek Plug Top Driver Series - Manual

Fully Anti-Clockwise = ~100Hz
Fully Clockwise = ~250Hz
Cmd
Clockwise adjustment =
Higher I Min.
‘I Min’
adjustment. I out
Clockwise adjustment =
Slower ramp UP.
Output Current
Adjustment ‘I Max’
t
Clockwise adjustment =
Increase Output Current
‘Output ON’ led
Ramp ‘UP’ adjustment.
Ramp ‘DOWN’ adjustment.
t
Clockwise adjustment =
Slower ramp DOWN.
Dither Frequency
Adjustment.
PWM
F.E.T.
output
stage
I Max ( 20 Turn potentiometer )
‘Dither’ ( PWM )
frequency adjust
I Min adjust
Ramp UP
Ramp
DOWN
+V Supply
GND (0v)
Command
Sig + I/P
Internal
PSU
Current
Feedback
PWM ‘ f ’
generator
Output to
valve coil
interface
Command
Scaling
Ramp
Generator
+Vref O/P
Current Command Block Diagram:
PWM
F.E.T.
output
stage
I Max ( 20 Turn potentiometer )
‘Dither’ ( PWM )
frequency adjust
I Min adjust
Ramp UP
Ramp
DOWN
+V Supply
GND (0v)
Command
Sig + I/P
Internal
PSU
Current
Feedback
PWM ‘ f ’
generator
Output to
valve coil
interface
Command
Sig - I/P
250Ω
shunt
Ramp
Generator
Voltage Command Block Diagram:
RED - +V Supply Input
BLUE - GND (0V) Supply Input
GREEN - +ImA Current Input
YELLOW - -ImA Current Input
NOTE: 4-20mA Isolation
-ImA current input is INTERNALLY
connected to GND (0v) supply input and
is NOT isolated.
IMPORTANT NOTE:
DO NOT short circuit the +Vref O/P to +V
Supply or GND(0V) as internal damage to
the PTD will occur!
RED - +V Supply Input
BLUE - GND (0V) Supply Input
GREEN - Voltage Command I/P
YELLOW - +Vref output to user
1.Ramp UP - single turn potentiometer
2.Ramp DOWN - single turn potentiometer
3.Imin adjust - single turn potentiometer
4.Dither Freq. - single turn potentiometer
5.Imax
- 20 turn potentiometer
ALL potentiometers are clockwise to
increase their setting
High Country Tek, Inc.
Electronic Control Solutions for the Global Fluid Power Industry
Plug Top Drivers - Quick Set-up
This Guide applies to: PTD-12-V, PTD-24-V, PTD-12-C & PTD 24-C