Vel rate lim, Vel ref fract, Vel ref whole – Rockwell Automation 1326 Digital AC Multi-Axis Motion Control System User Manual User Manual

Page 163: Vel source

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Publication 1394-5.0 — May 2000

Configuring Your 1394 Analog Servo System

8-27

[Vel Rate Lim]

The rate at which a velocity command is
incremented or decremented per unit of accel/
decel time (in seconds).
Important: The velocity rate limit command
overrides a position controller velocity rate limit
command. This parameter is automatically
changed to its maximum value when [Motor
Type] is selected.

Parameter Numbers

136, 137, 138, 139

Parameter Group

Vel Cmd Data

Display Units

rpSS (revolutions/second/second)

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

0 rpSS

Maximum Value

34015 rpSS

Default Value

34015 rpSS

[Vel Ref Fract]

Lower 16 bits of [Vel Ref Whole] (parameter 204),
forming a 32 bit velocity reference.

Parameter Numbers

208, 209, 210, 211

Parameter Group

Linear List

Display Units

rpm

Parameter Type

Read/Write

Linkable

Yes

[Vel Ref Whole]

This parameter is the present value of digital
velocity reference and must be the destination of
link for any data to be output.

Parameter Numbers

204, 205, 206, 207

Parameter Group

Vel Cmd Data

Display Units

rpm

Parameter Type

Read/Write

Linkable

Yes

Minimum Value

-8000.0 rpm

Maximum Value

+8000.0 rpm

Default Value

0.0 rpm

[Vel Source]

Selects the velocity command source(s) within
the drive. Automatically changed when [Mode
Sel] is changed (for convenience during
commissioning).
For Example: Axis 0, 1, 2 could be set in (#0)
analog reference while axis 3 could be set in (#1)
digital input.

Parameter Numbers

364, 365, 366, 367

Parameter Group

Vel Cmd Data

Display Units

None

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Default Value

0

"Anlg Vel"

Selections

0

"Anlg Vel"

analog ref from [Vel Command] (parameter 220)

1

"Dig Vel"

internal digital reference [Vel Ref Whole/Fract] (204, 208)

2

"Anlg+Dig Vel"

analog and digital reference

3

"Zero Vel"

zero velocity reference

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