Switch-Over From Frequency To Torque Control - Siemens SINAMICS G120 Operating Instructions Manual

Functions
8.24 Open-loop and closed-loop control
8.24.2.5

Switch-over from Frequency to Torque Control

Data
Parameter range:
Warnings:
Faults:
Function chart number:
Description
Caution
Don't use SS1 or SLS in conjunction with Closed-loop torque control
Closed-loop torque control should not be used in conjunction with the failsafe functions SS1
and SLS, because the speed ramp functions, necesarry for SS1 and SLS are not available
together with the closed-loop torque control. So, if activating SS1 or SLS in case of Closed-
loop torque control, an LSTO will be generated immediately (after the time set in P9680 has
been passed) if the actual frequency exeeds the safety envelope.
The STO can be used with Closed-loop torque control without any restrictions.
The closed-loop torque control is switched-on via parameter P1501 during operation or
selected with parameter P1300 = 22, 23.
Table 8-36
Control mode
Closed-loop
speed control
Closed-loop
torque control
8-182
Closed-loop torque control
P1300 = 20, 21
+ fail-safe functions SLS, SS1
P1300 = 22, 23
+ fail-safe functions SLS, SS1
P1300, P1501
-
-
-
P1501 = ON
OFF1 command is not recognized.
A safety fault is generated when the actual
frequency leaves the safety envelope.
OFF1 command recognized as OFF2.
A safety fault is generated when the actual
frequency leaves the safety envelope.
Operating Instructions, 11/2006, A5E00766042B AA
Control Units CU240S