Rockwell Automation 8720MC Drives Integration Manual User Manual

Page 142

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

C-30

Programming Parameters

Name: Mtr_Cont_Current

Data Display: Decimal

R/W

Parameter No.
111
File:
Motor/Drive/
Fdbk
Group:
Motor Data

Description: The motor continuous stall current is the current at which the motor produces the continuous
standstill torque according to the motor spec sheet. For all motors except for asynchronous motors, this
parameter is used as a reference for all torque data and for determining motor-related current values. This
parameter is ignored for induction motors therefore it does not apply to 8720SM motors.

Default:
null

Length
4 bytes

Minimum/Maximum

Min.

> 0

Max.

≤ 1000.0

SERCOS Scaling Resolution
1 = .1 amps

Units
amps

Name: Drive_Cont_Amps

Data Display: Decimal

R/W

Parameter No.
112
File:
Motor/Drive/
Fdbk
Group:
Drive Data

Description: The amplifier rated current is equal to the allowable continuous current of the drive unit. 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.

≤ 1000.0

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

Name: Max_Mtr_Speed

Data Display: Integer

R/W

Parameter No.
113
File:
Motor/Drive/
Fdbk
Group:
Motor Data

Description: The maximum motor speed is the maximum rated operating speed of the motor. With the standard
8720SM motors this value is stored in the motor encoder. If this value is exceeded by 20% an overspeed fault will
disable the drive. Parameter 129, “A-B Faults”, bit 15 will be set true.

Default:
From motor
encoder

Length
2 bytes

SCANport Min/Max
Min. > 0
Max.

≤ 30,000

SCANport Scaling Resolution
1 = 1 rpm

Units
rpm

Default:
From motor
encoder

Length
4 bytes

SERCOS/DPI Min/Max
Min. > 0

Max.

≤ 2

32

- 1

SERCOS/DPI Scaling Resolution
10

-4

Units
min

-1

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