Cur rate lim, Current limit, Cw ovspd vel – Rockwell Automation 1326 Digital AC Multi-Axis Motion Control System User Manual User Manual

Page 144: Cw vel lim, D/a #x gain

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Publication 1394-5.0 — May 2000

8-8

Configuring Your 1394 Analog Servo System

[Cur Rate Lim]

The largest change in the current reference per
velocity loop sample that will be allowed is
specified through this parameter. Value shown
on the display is in amperes/millisecond.
Description is based on percentage of motor
rating to allow interpretation of value.
This parameter is automatically configured to its
maximum value when [Motor Type] (parameter
100) is changed.

Parameter Numbers

192, 193, 194, 195

Parameter Group

Torq Data

Display Units

A/ms

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

10% rated motor current/ms

Maximum Value

100% rated motor current/ms

Default Value

100% rated motor current/ms

[Current Limit]

This parameter automatically changes both
positive and negative current limits to the same
value (for convenience during commissioning).

Parameter Numbers

116, 117, 118, 119

Parameter Group

Startup Parms

Display Units

amps

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

10% rated motor current

Maximum Value

300% rated motor current

Default Value

10% rated motor current

[CW OvSpd Vel]

Clockwise trip velocity for an overspeed fault.
This value is automatically set to 1000 rpm
greater than [CCW Vel Lim] if this value would be
greater then present setting.

Parameter Numbers

152, 153, 154, 155

Parameter Group

Vel Cmd Data

Display Units

rpm

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

0 rpm

Maximum Value

8000.0 rpm

Default Value

This is determined by the motor catalog number.

[CW Vel Lim]

Velocity mode clockwise maximum command
limit. This value is automatically set to the motor
rated velocity when the motor parameter is
changed.

Parameter Numbers

128, 129, 130, 131

Parameter Group

Vel Cmd Data

Display Units

rpm

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

0.0 rpm

Maximum Value

8000.0 rpm

Default Value

This is determined by the motor catalog number.

[D/A #x Gain]

Scaling factor for the D/A output test point. For
maximum resolution, this parameter should be
set so Gain = 128/(Maximum D/A Value). Where
(Maximum D/A Value) is the largest value of the
parameter that is linked to [D/A Value]
(parameter 12). Important: Velocity is scaled for
4096 counts = 1000 rpm. Current (I

Q

) is scaled

for 8192 counts = 100% motor rated current.

Parameter Numbers

10, 11

Parameter Group

Setup

Display Units

None

Parameter Type

Read/Write

Change While Running

Yes

Linkable

No

Minimum Value

-2.0000

Maximum Value

+2.0000

Default Value

0.0000

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