Baldor MN735 manual Speed 2 Wire Mode, Related Parameters

3 – 3 Speed 2 Wire Mode

In 3 speed 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 3-9 or logic signals from another device.

Figure 3-9 3 Speed Connection Diagram

Speed	Select
1	2	Command
Open	Open	Analog Input 1 & 2 (Add)
Open	Closed	Preset Speed 1
Closed	Open	Preset Speed 2
Closed	Closed	Preset Speed 3

Related Parameters

Speed Select 2

Speed Select 1

Run REV

Run FWD

+24VDC

Speed Output

Pot Reference

10

9

8

7

6

5

4

p302 Preset Speed 1

p303 Preset Speed 2

p304 Preset Speed 3

10KW Pot or

0-10VDC

Analog Input 2

Analog Input 1

Analog GND

3

2

1

Analog Input 1 = 0–10VDC Setpoint

Analog Input 2 = 4–20mA Setpoint

Fault

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.

9Speed Select input 1. Inputs 9 & 10 select preset speeds 1 to 3.

10Speed Select input 2. Inputs 9 & 10 select preset speeds 1 to 3. RLY1 Digital output that represents the fault status.

3–14 Receiving & Installation MN735