Rockwell-automation 1769-SM2 Compact I/O DSI/Modbus Communication Modu Manual de usuario descargar pdf (Pagina 189)

Appendix D

PowerFlex 4-Class Drives Logic

Command/Status Words

Appendix D provides the definitions of the Logic Command/Logic

Status words that are used for some drives that can be connected to the

1769-SM2 module. If the Logic Command/Logic Status for the drive

that you are using is not listed, refer to your drive’s documentation.

Logic Command Word

Logic Bits

1514131211109876543210

Command Description

x Stop 0 = Not Stop

1 = Stop

x Start

(1)

0 = Not Start

1 = Start

x Jog 0 = Not Jog

1 = Jog

x Clear Faults 0 = Not Clear Faults

1 = Clear Faults

x x Direction 00 = No Command

01 = Forward Command

10 = Reverse Command

11 = No Command

(2)

x x Accel Rate

(3)

00 = No Command

01 = Accel Rate 1 Command

10 = Accel Rate 2 Command

11 = Hold Accel Rate

x x Decel Rate

(3)

00 = No Command

01 = Decel Rate 1 Command

10 = Decel Rate 2 Command

11 = Hold Decel Rate

x x x Reference

Select

(3)

000 = No Command

001 = Freq Source (Spd Ref. par.)

010 = Freq Source (Int. Freq par.)

011 = Freq Source (Comm)

100 = Preset Freq 0

101 = Preset Freq 1

110 = Preset Freq 2

111 = Preset Freq 3

(2)

(1)

A “0 = Not Stop” condition (logic 0) must first be present before a “1 = Start” condition will start the drive. The Start command acts as

a momentary Start command. A “1” will start the drive, but returning to “0” will not

stop the drive.

(2)

Depending on the PowerFlex 4-Class drive, the functions for bits 6, 7, and 15 change. Refer to Appendix C in the PowerFlex 4,

PowerFlex 4M, PowerFlex 40 or PowerFlex 40P drive User Manual, or Appendix E for the PowerFlex 400 drive bit functions.

(3)

The functions for these bits are the same for all PowerFlex 4-Class drives—including the PowerFlex 40P when it is used in the

“Velocity” mode. When using the PowerFlex 40P in the “Position” mode, the bit functions are different. For details, refer to Appendix C

in the PowerFlex 40P User Manual.

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