Rockwell Automation 8720MC Drives Integration Manual - Manual (Page 136)

Publication 8720MC-IN002A-EN-P — December 2002
C-24 Programming Parameters
Name: Torque_Fback Data Display: Decimal R, Link
Parameter No.
84
File:
Control
Group:
Torque Description: The torque feedback value can be is transferred from the drive to the control unit via SERCOS.
Default:
0.0 Length
2 bytes SCANport Minimum/
Maximum
Min.
≥ -1000.0
Max. ≤ +1000.0
SCANport Scaling Resolution
1=.1% Units
%
Default:
0 Length
2 bytes SERCOS/DPI Min/Max
Min. ≥ -2 15
Max.
≤ +2 15
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 86
Scaling factor: parameter 93
Scaling exponent: parameter 94 Units
parameter
86
Name: Torque_Polarity Data Display: Bit Pattern R/W
Parameter No.
85
File:
Control
Group:
Torque Description: Torque polarity parameter. This parameter is used to switch polarities of reported torque data for
specific applications. Polarities are not switched internally but externally (on the input and output) of a closed loop
system. The motor shaft turns clockwise when there is a positive torque command difference and no inversion.
Enumerated Bit Pattern:
Structure of torque polarity parameter:
Bit 0 – Torque command value
0 = non-inverted
1 = inverted
Bit 1 – Additive torque command value
0 = non-inverted
1 = inverted
Bit 2 – Torque feedback value
0 = non-inverted
1 = inverted
Bits 15-3 (reserved)
This parameter is available with the 8720MC SERCOS interface.
Default:
x000 Length
2 bytes Minimum/Maximum
N/A Scaling Resolution
N/A Units
N/A