Rockwell Automation 8720MC Drives Integration Manual User Manual

Page 141

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Publication 8720MC-IN002A-EN-P — December 2002

Programming Parameters

C-29

Name: Cur_Bandwidth

Data Display: unsigned Integer

R

Parameter No.
106
File:
Control:
Group:
Torque

Description: This attribute defines the tuned bandwidth setting so that the current regulator’s K

P

and K

I

can be

derived.

Default:
2000

Length
2 bytes

Minimum/Maximum
Min. > .1
Max.

≤ 6553.5

Scaling Resolution
1 = 1 rad/s

Units
rad/s

Name: Mtr_Peak_Current

Data Display: Decimal

R/W

Parameter No.
109
File:
Motor/Drive/
Fdbk
Group:
Motor Data

Description: If the motor peak current is less than the capacity of the drive amplifier, the amplifier is
automatically limited to the level of the motor peak current. Parameter 109 motor peak RMS current at rated
(base) speed. For a standard 8720SM motor with Stegmann feedback this value is read from the motor encoder
memory.

Default:
From motor
encoder

Length
2 bytes

Analog Minimum/Maximum
Min. > 0
Max.

≤1000.0

Analog Scaling Resolution
1 = .1 amps

Units
amps

Default:
From motor
encoder

Length
4 bytes

SERCOS Min/Max
Min. > 0

Max.

≤ 2

32

- 1

SERCOS Scaling Resolution
1 = .001 amps

Units
amps

Name: Drive_Peak_Amps

Data Display: Decimal

R

Parameter No.
110
File:
Motor/Drive/
Fdbk
Group:
Drive Data

Description: The amplifier peak current is limited by the drive hardware, which means that the current for the
maximum attainable torque limit value is fixed as well. This parameter is determined by the drive and can’t be
changed.

Default:
From drive
amplifier

Length
2 bytes

SCANport Min/Max
Min. > 0
Max.

≤ 3000.0

SCANport Scaling Resolution
1 = .1 amps

Units
amps

Default:
From drive
amplifier

Length
4 bytes

SERCOS/DPI Min/Max
Min. > 0

Max.

≤ 2

32

- 1

SERCOS/DPI Scaling Resolution
1 = .001 amps

Units
amps

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