User`s guide

Analog Input
Figure 87: 4-Pin miniDIN Female
Analog control of the motor speed can be achieved in many ways. The following circuit is recommended.
A DC voltage (10 VDC max) will be needed to supply the excitation voltage to the circuit.
Figure 88: Recommended connection circuit for analog control of motor speed.
Connect cicuit as shown in the above figure. Turning the Potentiometer CW will increase the motor speed
(pin 4 is 10 VDC) and turning the Potentiometer CCW will decrease the motor speed (pin 4 is 0 VDC).
✐
NOTE: Refer to the accessories section for recommended mate connector and cable.
DC Voltage Source
DC Voltage Source
Return
10 VDC max
1
2
3
1
2
3
4
Multi-turn
Potentiometer
Mating
Connector
Pump
J3
Refer to the accessories
section for recommended
mate connector and cable.
1
2
3
4
Pin # Signal Description
1 GND Ground
2 IN - (SIG RTN) Signal RTN
3 N/C
4 IN + (ANALOG IN) 0-10 V Analog In
ANALOG IN (SIG + ) 0 to +10V
OVERVOLTAGE RATING
(Absolute Max/Min): +15V Max.
-2.5V Min.
!
10V
Harvard Apparatus PHD ULTRA
™
Syringe Pump Series User's Manual
Publication 5419-002-Rev-A
104
A
ppendices