6.4 Torque limits
Physical torque limits
The torque limitation for the field weakening range is described in chapter 6.2.10.4
Torque limiting characteristic.
In the lower speed range, there is the possibility to adjust a limit via parameters of
the stabilizing current, which operates independently of the motor type and con-
trolmode.
Reduction of the maximum possible torque to small
speeds. Particularly helpful in Hf operation. As a
function of the speed, between ds37 and ds37 +
(ds37- ds36)/2 (in % to rated torque, default value is
0 = Off).
min. speed for stab. current
Speed limits (in % rated motor speed), which lower-
ing the stabilisation current to 0 (value programmed
in ds35).
max. speed for stab. current
off
50% rated motor current
5% rated speed
10% rated speed
Figure 109: Torque limit in the lower speed range
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