Revision 1.1
Variphase User Manual
Page 11
Analog Input Closed-Loop Control
Overview
•
An external potentiometer controls set-point from 0% to 100%.
•
Variphase automatically adjusts motor output to maintain set-point
•
P, I and D parameters can be adjusted to configure closed-loop response
•
Adjust Minimum Speed Pot to limit lowest motor voltage.
•
Detail information is found in App Note 1007
Configuration
•
Install JP1
•
Remove JP5 (Tach/Hall Effect Sensor Jumper)
•
Wire sensor feedback signal to Control Terminals (note – signal must not exceed 5.0V)
•
Set Bit 3 in MODBUS Register 23 by writing a value of 8. Refer to the Advanced Technical
Manual for full details.
•
Use ACC1-PID Console to configure PID parameters
Wiring
7 Way 0.2" Terminal Block Plug
Phoenix 1757064 or similar
Potentiometer
5K - 50K Ohms
+
5
V
H
a
ll
0
V
+
1
2
V
A
N
A
2
0
V
A
N
A
1
Variphase Control Terminals
Sensor
0-5 Volt Signal
0V/Com
Feedback Sensor
(Pressure, Temperature..)
Set-point
Control
Figure 4
