5 – EPOT 2 Wire Mode (Electronic Potentiometer)

In EPOT 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 3-11 or logic signals from another device.

Figure 3-11 EPOT Connection Diagram

Note:

Decrease

Speed Command = Analog1 + Analog2 + EPOT

Increase

 

Analog Input 1 = 0–10VDC Setpoint

Run REV

Run FWD

Analog Input 2 = 4–20mA Setpoint

+24VDC

 

 

Speed Output

 

Pot Reference

 

Analog Input 2

10KW Pot or

Analog Input 1

 

0-10VDC

Analog GND

Fault

10

9

8

7

6

5

4

3

2

1

RLY1A

RLY1B

1Analog GND. Reference for analog inputs.

2Setpoint 0–10VDC. Single ended analog voltage input, referenced to 1.

3Setpoint 4–20mA. Single ended analog current input, referenced to 1.

4+10VDC reference voltage for potentiometer.

5Analog output that represents the commanded speed output.

6+24VDC for Optical Inputs power.

7CLOSED starts motor operation in the Forward direction.

8CLOSED starts motor operation in the Reverse direction.

9Momentary CLOSED increases motor speed while contact is closed.

10Momentary CLOSED decreases motor speed while contact is closed. RLY1 Digital output that represents the fault status.

3–16 Receiving & Installation

MN735

Page 27
Image 27
Baldor MN735 manual Epot Connection Diagram