Siemens SINUMERIK 840C Installation Instructions Manual page 525

7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
Resultant
torque limit
value
Reduction factor MD 1231
Reduction factor MD 1223 in
Additional limitation through
MD 1239 in set-up mode
1231
Default value
100.0
The 2nd torque limit value entered in MD 1231 acts as a reduction factor referred to the 1st
torque limit value (MD 1230). It becomes active only if the 2nd torque limit value is selected
via the PLC control word and the motor speed exceeds the value set in MD 1232 with
hysteresis (MD 1234).
1232
Default value
6 000.0
Input of speed above which switchover from the 1st torque limit to the 2nd torque limit (MD
1231) can take place. A settable hysteresis (MD 1234) is applied during switchover. The 2nd
torque limit value is activated only if the motor speed exceeds the speed threshold with
hysteresis and if the 2nd torque limit value has been selected via the PLC control word.
7–110
More user manuals on
Power Breakdown
limitation torque limitation
1/n
MD 1230
with selection of
2nd torque limit
generator operation
MD 1235
Reduction factor MD 1236
with selection of 2nd power
Additional limitation
through MD 1237 in
generator operation
Constant
Constant power range
torque range
2nd torque limiting value
Lower input limit
5.0
Switching speed from MD 1230 to MD 1231
Lower input limit
0.0
ManualsBase.com
MD 1145
Torque limitation
1/n 2
limit
Upper input limit
100.0
Upper input limit
50 000.0
©
Siemens AG 1992 All Rights Reserved
07.97
Power limitation
Breakdown torque
limitation
Speed
Active
at once
Units
%
Active
at once
Units
rev/min
6FC5197- AA50
SINUMERIK 840C (IA)