Control functions
7.3 Pulse train input position control (PTI)
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
231
When the torque setpoint reaches torque limit, the torque is limited to the value selected by
TLIM1/TLIM2.
Note
Control mode
The above four sources are valid in the PTI mode, the IPos mode and the S mode. You can
switch among them when the servo drive is running.
Note
When the motor torque exceeds the torque limit, fault F52911/F52912 appears. The fault
indicates the motor torque exceeds the torque limitation of the selected group which is
determined by TLM1 and TLM2.
Refer to "DIs (Page 123)" for more information about the digital input signals TLIM1 and
TLIM2.
Overall torque limit
Besides the above four sources, an overall torque limit is also available for all control modes.
The overall torque limit takes effect when an quick stop (OFF3) happens. In this case, the
servo drive brakes with a maximum torque.
Parameter
Range
Default Unit
Description
p1520
-1000000.00 to
20000000.00
0
Nm Overall torque limit (positive)
p1521
-20000000.00 to
1000000.00
0
Nm Overall torque limit (negative)
Internal torque limit
Select an internal torque limit by setting the following parameters.
Parameter
Range
Default
Unit
Description
Digital input
TLIM2 TLIM1
p29043
-100 to 100
0
%
Fixed torque setpoint
-
-
p29050[0]
-150 to 300
300
%
Internal torque limit 1 (positive)
0
0
p29050[1]
-150 to 300
300
%
Internal torque limit 2 (positive)
1
0
p29050[2]
-150 to 300
300
%
Internal torque limit 3 (positive)
1
1
p29051[0]
-300 to 150
-300
%
Internal torque limit 1 (negative)
0
0
p29051[1]
-300 to 150
-300
%
Internal torque limit 2 (negative)
1
0
p29051[2]
-300 to 150
-300
%
Internal torque limit 3 (negative)
1
1
