Configuration
Function blocks
Internal motor control with vector control (MCTRL2)
8
8.2
8.2.7
8.2-60
EDSVF9333V EN 3.0-06/2005
The function is suitable for applications which also require a constant torque
in the field weakening range.
ƒ With quick stop (QSP) the torque limitation becomes inactive.
ƒ When the motor torque reaches the defined limit, the drive cannot
follow the speed setpoint anymore and the output MCTRL-MMAX is set
to HIGH.
External setting of torque limits
If the maximum torque reached in the field weakening operation is too low,
the torque limits can be changed via the inputs MCTRL-HI-M-LIM and
MCTRL-LO-M-LIM.
ƒ MCTRL-HI-M-LIM defines the upper torque limit in [%] of the maximum
torque displayed in C0057.
Maximum possible input value: 199.99 %
ƒ MCTRL-LO-M-LIM defines the lower torque limit in [%] of the maximum
torque displayed in C0057.
Minimum possible input value: -199.99 %
Note!
The maximum possible torque displayed under C0057refers to
the basic speed range (zero speed to rated speed of the motor)
and is calculated from the nameplate data and the setting of the
maximum motor current under C0022.
Torque limitation in the field
weakening range
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