Rockwell Automation 8720MC Drives Integration Manual User Manual
Page 145
Publication 8720MC-IN002A-EN-P — December 2002
Programming Parameters
C-33
Name: Torque_Threshold
Data Display: Decimal
R/W
Parameter No.
126
File:
Status/Faults
Group:
Setup
Description: Torque threshold (Tx ). If the torque feedback value exceeds the torque threshold T x, the drive sets
the status 'T
≥ Tx' in C3D (parameter 333).
Analog Default:
100.0
Length
2 bytes
SCANport Min/Max
Min.
≥ 0
Max.
≤ +1000.0
SCANport Scaling Resolution
1 = .1 %
Units
% Rated
motor torq
Default:
100.0
Length
2 bytes
SERCOS/DPI Min/Max
Min. > 0
Max.
≤ 2
15
- 1
SERCOS/DPI Scaling Resolution
Scaling type: parameter 86
Scaling factor: parameter 93
Scaling exponent: parameter 94
Units
parameter
86
Name: A-B Fault
Data Display: Bit Pattern
R
Parameter No.
129
File:
Status/Faults
Group:
Errors
Description: Manufacturer class 1 diagnostic. The 8720MC defines additional shut-down errors in manufacturer
class 1 diagnostic (C1D). If an error is set in the manufacturer class 1 diagnostic, the manufacturer-specific error
bit in class 1 diagnostic (see parameter 11) is set as well. The drive cancels the manufacturer-specific error and
resets to '0' only if the error in manufacturer class 1 diagnostic has been eliminated and on receiving the
command 'reset class 1 diagnostic' (see parameter 99) via SERCOS or the drive error reset input.
Enumerated faults:
0: positive software overtravel fault
1: negative software overtravel fault
2: + hardware overtravel
3: - hardware overtravel
4: motor feedback 1 lost signal
5: motor feedback 1 noise fault
6: aux feedback 2 lost signal
7: aux feedback 2 noise fault
8: reserved
9: reserved
10: reserved
11: reserved
12: reserved
13: Power structure ground short
14: Drive Hardware Fault
15: Overspeed = 120% of parameter 113, “Max Motor Speed”, or 150% of the velocity limits set for the active
servo loop parameter set, parameters 38 and 39 for servo loop group 0, etc.
Default:
N/A
Length
2 bytes
Minimum/Maximum
N/A
Scaling Resolution
N/A
Units
N/A