Siemens SINUMERIK 828D Commissioning Manual page 100

Parameterizing machine data
4.5 Machine data for an analog spindle
Relevant machine data
The following machine data must be set for the analog spindle:
● Activation of the analog spindle:
MD30100 $MA_CTRLOUT_SEGMENT_NR = 0
The analog spindle for the setpoint output is activated by setting the local bus as bus
segment.
● Selecting the analog spindle mode:
● The rated output voltage must be adapted to the rated speed of the analog drive:
MD32250 $MA_RATED_OUTVAL
MD32260 $MA_RATED_VELO
● If the analog spindle is to be operated without an actual value encoder, then the value 0
must be entered as number of encoders:
MD30200 $MA_NUM_ENCS = 0
● When using a directly mounted spindle actual value encoder, PROFIBUS should be
selected as the actual value sensing type:
MD30240 $MA_ENC_TYPE = 1 or 4
● The spindle actual value encoder must then be configured as 2nd encoder of a SINAMICS
axis. To do this, the drive assignment of the actual value should be set the same as for the
axis, where the SMC30 is to be connected at its axis module:
MD30220[0] $MA_ENC_MODULE_NR[0] = MD30220[0] of the SINAMICS axis
● The input assignment of the actual value should be set to the input for the 2nd encoder at
the SINAMICS axis module:
MD30230[0] $MA_ENC_INPUT_NR[0] = 2
● Automatic drift compensation can be activated for a connected spindle actual value encoder:
MD36700 $MA_DRIFT_ENABLE
MD36710 $MA_DRIFT_LIMIT
● A basic drift value is continuously entered as additional speed setpoint independent of
whether there is a spindle actual value encoder:
MD36720 $MA_DRIFT_VALUE
Example
Example of three axes and an analog spindle with actual value encoder (SMC30 as 2nd
encoder connected to the Y axis).
MD identifier
MD30100 CTRLOUT_SEGMENT_NR 5
MD30110 CTRLOUT_MODULE_NR
MD30120 CTRLOUT_NR
MD30130 CTRLOUT_TYPE
86
MD30134 $MA_IS_UNIPOLAR_OUTPUT
=0 bipolar output (+/-10 V)
=1 unipolar spindle with separate enable and direction signals
=2 Unipolar spindle with direction-dependent enable
X Y Z SP
5 5 0
1 2 3 1
1 1 1 1
1 1 1 1
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
Meaning
Bus segment
Module assignment
Output assignment
Output type
CNC commissioning