Brake
ASCII: MBRAKE
Default: 0 valid for all OPMODES
If you want to operate a 24V holding brake in the motor directly from the servo amplifier, this parameter can be
used to enable the brake function.
ID Function Comments
0 without
Brake function is disabled.
1 with
If the brake function is enabled, then the output at the BRAKE (X9/2) terminal
will be 24V if the ENABLE signal is present (Brake off) and 0V if the ENABLE
signal is missing (brake activated).
In the diagram in Chapter I.9 of the Installation Manual you can see the time/function relationship between the
ENABLE signal, the speed setpoint, actual speed value, and the braking force. Change this only while the
amplifier is disabled + reset.
Load Data from Disk
Load a motor-parameter file from a data medium (hard disk, diskette). The servo amplifier must be disabled to
do this.
Motor Unit
ASCII: MUNIT
Default: 0 valid for all OPMODES
Defines the entry for motor speed.
If 1/min (rpm) is used, the setting for velocity/speed will be applied for VUNIT.
Field Level
ASCII: MIMR
Default: 0 A valid for all OPMODES
Defines the magnetizing current for an asynchronous motor: this is usually set to 40% - 50% of the continuous
current.
The magnetizing current remains constant below the rated speed of the motor. If the motor is operated above
the rated speed, this current is reduced in inverse proportion to the motor speed (field-weakening).
Kp
ASCII: GF
Default: 15 valid for all OPMODES
Proportional gain (P) of the flux controller. The flux controller is implemented as a PI controller.
Tn
ASCII: GFTN
Default: 50 ms valid for all OPMODES
Reset (I) time of the flux controller. The flux controller is implemented as a PI controller.
Field Correct Factor
ASCII: MCFW
Default: 1.5 valid for all OPMODES
Correction factor for field-weakening.
The correction factor compensates for non-linearity of the motor inductance with reducing magnetizing current
by increasing speed during field-weakening.
Slip Correct Factor
ASCII: MCTR
Default: 1.5 valid for all OPMODES
Correction factor for the rotor (armature) time constant, increases the torque in the field-weakening range
/stationary range.
Setup Software 35
BECKHOFF 07/03 Screen page "Motor" asynchronous
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