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Receiving & Installation 3–17MN735
6 – PID 2 Wire Mode
In PID 2 wire mode, the control is operated by the opto isolated inputs and
the analog command input. The opto inputs can be switches as shown in
Figure 3-12 or logic signals from another device.
Figure 3-12 PID Connection Diagram
RLY1A
RLY1B
Process
Enable
Command
Open
Closed
Analog Input 1 (Speed Ref)
PID
Fault
Analog Input 1 = 0–10VDC Setpoint
Analog Input 2 = 4–20mA Feedback
8
9
10
Run REV
Process Enable
Jog
Analog GND
Analog Input 1
Analog Input 2
Pot Reference
+24VDC
Run FWD
1
2
3
4
5
6
7
10KW Pot or
0-10VDC
Speed Output
Related Parameters
p8 Jog Speed
Jog Accel
Jog Decel
1 Analog GND. Reference for analog inputs.
2 PID Setpoint 0–10VDC. Single ended analog voltage input, referenced to 1.
3 PID Feedback 4–20mA. Single ended analog current input, referenced to 1.
4 +10VDC reference voltage for potentiometer.
5 Analog output that represents the commanded speed output.
6 +24VDC for Optical Inputs power.
7 Momentary CLOSED starts motor operation in the Forward direction. In Jog mode
(10 Closed), jogs motor in forward direction as long as switch is closed.
8 Momentary CLOSED starts motor operation in the Reverse direction. In Jog mode
(10 Closed), jogs motor in reverse direction as long as switch is closed.
9 CLOSED enables process mode. OPEN selects Analog Input 1 setpoint.
10 CLOSED places control in Jog mode. Forward and Reverse run are used to Jog the motor at
Jog speed.
RLY1 Digital output that represents the fault status.