Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 144)

Publication 8720MC-IN002A-EN-P — December 2002
C-32 Programming Parameters
Name: Gear_Out_Revs_0 Data Display: Integer R/W
Parameter No.
122
File:
Servo Loop
Group:
Group 0 Description: Output revolutions of load gear set. Output revolutions must be entered as an integer value. For
example: If the input makes 4 turns for each output revolution, a value of 4 is entered into parameter 121 and a
value of 1 is entered into parameter 122. This parameter applies to the SERCOS interface only.
Analog Default:
1 Length
2 bytes Analog Minimum/Maximum
Min.
≥ 0
Max. ≤ +65535
Analog Scaling Resolution
1 revolution of the output shaft Units
revs
Default:
1 Length
4 bytes SERCOS Min/Max
Min. > 0
Max.
≤ 2 32
- 1
SERCOS Scaling Resolution
1 [output revolution] Units
revs
Name: Zero_Spd_Window Data Display: Integer R/W
Parameter No.
124
File:
Status/Faults
Group:
Setup Description: The standstill window describes the amount of the deviation of the velocity from 0. If the velocity
feedback value is within the standstill window the drive sets the status n feedback = 0 (parameter 331).
Analog Default:
10 Length
2 bytes SCANport Min/Max
Min.
≥ 0
Max. ≤ +30,000
SCANport Scaling Resolution
1 = 1 rpm Units
rpm
Default: Length
4 bytes SERCOS/DPI Min/Max
Min. > 0
Max.
≤ 2 32
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 44
Scaling factor: parameter 45
Scaling exponent: parameter 46 Units
parameter
44
Name: Speed_Threshold Data Display: Integer R/W
Parameter No.
125
File:
Status/Faults
Group:
Setup Description: Velocity threshold (n
x
). If the velocity feedback value falls below the velocity threshold nx, the drive
sets the status 'nfeedback < nx ' (parameter 332) in C3D.
Analog Default:
1000 Length
2 bytes Analog Minimum/Maximum
Min.
≥ 0
Max.
≤ +30,000
Analog Scaling Resolution
1 = 1 rpm Units
rpm
Default:
1 Length
4 bytes SERCOS/DPI Min/Max
Min. > 0
Max. ≤ 2 32
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 44
Scaling factor: parameter 45
Scaling exponent: parameter 46 Units
parameter
44