Rockwell Automation 8720MC Drives Integration Manual User Manual

Page 139

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

Programming Parameters

C-27

Name: Diagnostic_Msg

Data Display: ASCII Characters

R

Parameter No.
95
File:
Status/Faults
Group:
Errors

Description: Any drive-specific message concerning the operation of the drive can be stored here, and the master
can read it at any time.

Default:
N/A

Length
Variable
Characters

Minimum/Maximum
N/A

Scaling Resolution
N/A

Units
N/A

Name: Drive_Err_Reset

Data Display: Bit Pattern

R

Parameter No.
99
File:
Status/Faults
Group:
Errors

Description: Reset class 1 diagnostic. In the SERCOS configuration when this procedure command is received by
the drive via the service channel and no error exists in parameter 11, “Class 1 Diagnostics” (C1D) or parameter
129, “A-B Fault”, the manufacturer's C1D, the drive shut-down error bit in the SERCOS drive status word (bit 13),
will be reset by the drive. This essentially means that any shut-down errors detected by the drive and
subsequently removed will be reset by the drive. (see parameter 11, and parameter 129). In the analog
configuration this function is provided by the Drive Error Reset reset input.

Enumerated Bit Pattern:
Structure of reset class 1 diagnostic
Structure of procedure command acknowledgment

Default:
N/A

Length
2 bytes

Minimum/Maximum
N/A

Scaling Resolution
N/A

Units
N/A

Name: Vel_Prop_Gain_0

Data Display: Integer

R/W

Parameter No.
100
File:
Servo Loop
Group:
group 0

Description: Velocity loop proportional gain. This is one of the parameters included in the 8 sets of servo loop
parameters. Increasing this parameter produces faster velocity loop dynamic response with higher risk of
instability. It will also reduce the dynamic velocity error. Decreasing this parameter will soften the dynamic
response, increase the dynamic velocity error and reduce the velocity loop instability. This parameter may be auto
tuned. See parameter 541

Default:
600

Length
2 bytes

Minimum/Maximum
Min.

≥ 0

Max.

≤ +30000

Scaling Resolution
1 = 1/sec

Units
1/sec

Name: Vel_Integ_Time_0

Data Display: Decimal

R/W

Parameter No.
101
File:
Servo Loop
Group:
group 0

Description: Velocity loop integral action time. This is one of the parameters included in the 8 sets of servo loop
parameters. Decreasing this value will increase the dynamic response in the velocity loop and reduce the steady
state velocity error. This value will be modified as a result of auto tuning.

Default:
240

Length
2 bytes

Minimum/Maximum
Min.

≥ 0

Max.

≤ +6553.5

Scaling Resolution
1 = .1 msec

Units
msec

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