HEIDENHAIN MANUALPLUS 620 - Page 1468

1468 HEIDENHAIN Technical Manual MANUALplus 620
 Synchronous motor:
You can get the missing values from the motor table:
 PN: Power rating of the motor
 nn: Rated speed of the motor
 IN: Rated current of the motor
 I0: No-load current of the motor
MP_forthTorqueFactor
Conversion factor of the programmed force to a torque
Available from NCK software version: 597 110-05.
Format: Numerical value
Input: 0.100 000 000 to 1
Because a maximum force is programmed, but physically only
the motor torque can be limited, the force must be converted
with this factor to torque.
Default: 0.1
Access: LEVEL3
Reaction: RUN
When G930 "sleeve monitoring" is active, you can define a minimum/
maximum limit for the torque-producing current Iq with MP_minTorque and
MP_maxTorque. Enter the minimum or maximum value in percent of the
value of the no-load current (synchronous motor) or of the rated current
(asynchronous motor) from the motor table.
Depending on the value of the programmed contact force, the PLC specifies
a value for the torque-producing current Iq. In MP_torqueTolerance, you can
program a tolerance window around this PLC-specified value for the current
Iq. If the instantaneously consumed current of the axis reaches a value within
this tolerance window, a status message to the PLC is generated.
I
q
D
M
nn 2π I
N
2⋅⋅⋅⋅
P
N
60⋅
--------------------------------------------------------------------------
=
I
q
forthTorqueFactor F
rst
⋅ nn 2π I
N
2⋅⋅⋅⋅
P
N
60⋅
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=