Manual

Electronic Controller Solutions for the Fluid Power Industry
Plug Top Driver adjustment Location Guide:
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:
-ImA current input is INTERNALLY
connected to GND (0v) supply input and
is NOT isolated.
IMPORTANT NOTE:
DO NOT short circuit the +Vref to +Supply
or GND(0V) as 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
Fully Anti-Clockwise = ~100Hz
Fully Clockwise = ~250Hz
Cmd
Clockwise adjustment =
Higher I Min.
‘I Min’
adjustment.
Iout
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.