Rockwell Automation SP200 AC Drive, 1 2 Channel Analog, Preset Speed User Manual

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Editing Drive Parameters

7-9

7.1.3.2 Selecting the Speed Reference for Model C Drives

Figure 7.2 shows the logic that is used to establish the source of the speed reference
for model C drives. See the parameter descriptions for additional configuration
information.

Figure 7.3 – Speed Reference Source for Model C Drives

7.1.3.3 Speed Selection Examples

Following are two examples of setting the speed reference for SP200 drives.

Example 1

Configure the drive to use two speed references : P-40 (Internal/Jog Frequency) and
the keypad frequency. Use the Configurable Input to switch between these two speed
references so that when it is turned on, P-40 (Internal/Jog Frequency) is selected.

This is accomplished as follows:

Step 1. Set P-20 (Main Speed Reference) = 1 to select the keypad frequency as the

main speed reference.

Step 2. Set P-21 (Alternate Speed Reference) = 2 to select P-40 (Internal/Jog

Frequency) as the alternate speed reference.

Step 3. Set P-11 (Configurable Input) = 3 to select the alternate speed reference

enable function. When the configurable input is turned on, P-40 (Internal/
Jog Frequency) is selected as the active speed reference for the drive.

Example 2 (Model C only)

Configure the drive to use PI control. The reference for the process is Analog Input 2.

This is accomplished as follows :

Step 1. Set P-28 (Process Reference) = 0 to select Analog Input 1 as the process

reference.

Analog Input 1

Keypad Frequency

Internal Frequency

Analog Input 2

(P-20)

Main

Speed

Ref

Alternate

Speed

Ref

(P-21)

Process Ref

Select
(P-28)

Speed

Reference

Configurable

Input

(P-11 = 3)

(P-29)

Process

Operation