Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual

Page 91

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Using the L Option

5-9

Figure 5.3
TB3 Terminal Designations

Speed Select/Speed Reference

Several sources can provide the speed reference to the drive. A
SCANport device or the L Option determine the source.

The default source for a command reference (all speed select inputs
open) is Speed Ref 1. If any of the speed select inputs are closed, the
drive uses other parameters as the speed reference source.

The following table defines the input state of the Speed Select inputs
for a desired speed reference source:

Closed = Applied = 1
Open = Removed = 0

Example 1

For the first example, input mode 2 has been selected. The application
calls for a local Human Interface Module (HIM) speed command or
remote 4 – 20mA from a PLC. To program the drive for this example:

1. Set the value of SP An In1 Select (parameter 133) to 1.

2. Set the value of SP An In1 Scale (parameter 135) to 0.125.

3. Link SP An In1 Value (parameter 134) to Speed Ref 1

(parameter 29).

4. Set mA In Offset (parameter 103) to 0.

5. Set mA In Scale (parameter 104) to 2.

6. Link mA In Value (parameter 102) to Speed Ref 2 (parameter 31).

Speed

select 3

Speed

select 2

Speed

select 1

Frequency source:

Open

Open

Open

Speed Ref 1

Open

Open

Closed

Speed Ref 2

Open

Closed

Open

Speed Ref 3

Open

Closed

Closed

Speed Ref 4

Closed

Open

Open

Speed Ref 5

Closed

Open

Closed

Speed Ref 6

Closed

Closed

Open

Speed Ref 7

Closed

Closed

Closed

Last State

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Input 1

Input 2 (Stop)

Common

Input 3

Input 4

Input 5

Common

Input 6

Input 7

Input 8

Common

Enable

Encoder B

Encoder NOT A

Encoder NOT B

Encoder A

+12V

(200mA max.)

Encoder Common

Included on L7E, L8E, & L9E Only

Speed Select 1

Speed Select 2 (Open)

Speed Select 3 (Open)

26

Local

Remote

27

28

file:

Interface/Comm

group:

SCANport Analog

file:

Interface/Comm

group:

Analog Inputs

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