Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 150)

Publication 8720MC-IN002A-EN-P — December 2002
C-38 Programming Parameters
Name: At_Spd_Window Data Display: Integer R/W
Parameter No.
157
File:
Status/Faults
Group:
Setup Description: The velocity window relates the current velocity to the velocity command value (parameter 36). If
the current velocity feedback value falls within the calculated velocity window, the drive sets the status
“n feedback = n command” (parameter 330). A value of zero disables the occurrence of the At_Prog_Speed
event, parameter 330
Default:
10 Length
2 bytes SCANport Min/Max
Min.
≥ 0
Max. ≤ +30,000
SCANport Scaling Resolution
1 RPM, range - 0 to +30,000 RPM Units
RPM
Default:
5 Length
4 bytes SERCOS/DPI Min/Max
Min.
≥ 0
Max. ≤ +2 31
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 44
Scaling factor: parameter 45
Scaling exponent: parameter 46 Units
parameter
44
Name: Max_Foll_Error Data Display: Integer R/W
Parameter No.
159
File:
Status/Faults
Group:
Setup Description: Monitoring window. By means of the monitoring window, the maximum position deviation, as
referenced to the active actual position value, can be defined for the position feedback value. When the position
error value exceeds the maximum position window value, the drive sets an error for excessive position deviation
in C1D (parameter 11).
Default:
30,000 Length
2 bytes SCANport Min/Max
Min.
≥ 0
Max.
≤ +65535
SCANport Scaling Resolution
360/parameter 79, default: with parameter 79 at
3600 cnts/rev, increment = .1 degree, Range = 0 to
+3276.7 degrees Units
Param 79
counts/rev
Default:
+2
31
- 1
Length
4 bytes SERCOS/DPI Min/Max
Min.
≥0
Max. ≤ +2 31
- 1
SERCOS/DPI Scaling Resolution
Scaling type parameter 76
Scaling factor parameter 77
Scaling exponent parameter 78
Rotational position resolution parameter 79 Units
parameter
76