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Rockwell Automation 8720MC Drives Integration Manual User Manual

Page 153

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

Programming Parameters

C-41

Name: Mtr_Cont_Current

Data Display: Decimal

R/W

Parameter No.
196
File:
Motor/Drive/
Fdbk
Group:
Motor Data

Description: Motor rated current. The motor rated current is the current at which the motor produces the rated
torque according to the motor spec sheet. For all asynchronous motors, this parameter is used as a reference for
all torque data and for determining motor related current values.

Analog Default:
Motor encoder

Length
2 bytes

SCANport Min/Max
Min.

≥ 0

Max.

≤ +1000.0

SCANport Scaling Resolution
1 = .1 amp

Units
amp

Default:
Motor encoder

Length
4 bytes

SERCOS/DPI Min/Max
Min.

≥ 0

Max.

≤ +2

31

- 1

SERCOS/DPI Scaling Resolution
1 = .001 amp

Units
amp

Name: Drive_On _Delay

Data Display: Decimal

R/W

Parameter No.
206
File:
Motor/Drive/
Fdbk
Group:
Brake

Description: Drive on delay time. When "drive on" and "drive enable" are set (bits 14 and 15 of the SERCOS
master control word) torque is activated at once, but the drive follows the command values after this waiting time
has elapsed. In the analog configuration this delay occurs after the drive enable input is energized. This allows the
drive time to develop holding torque before energizing the release brake solenoid.

Default:
0

Length
2 bytes

Minimum/Maximum
Min.

≥ 0

Max.

≤ +6,553.5

Scaling Resolution
1 = .1 msec

Units
msec

Name: Drive_Off _Delay

Data Display: Decimal

R/W

Parameter No.
207
File:
Motor/Drive/
Fdbk
Group:
Brake

Description: Drive off delay time. After "drive off" (bit 15 of the SERCOS master control word) is reset and
n
feedback = 0 (parameter 124) is reached, the torque remains activated in the drive until this waiting time is
elapsed. In the analog configuration this delay occurs after the zero speed output is energized. This allows the
drive time to develop holding torque before de energizing the release brake solenoid.

Default:
0

Length
2 bytes

Minimum/Maximum
Min.

≥ 0

Max.

≤ +6,553.5

Scaling Resolution
1 = .1 msec

Units
msec