Machine Data For An Analog Spindle - Siemens SINUMERIK 828D Commissioning Manual

4.5

Machine data for an analog spindle

Connection for encoder actual values
Precondition for connecting a spindle actual value encoder is an axis with digital drive
(SINAMICS axis), which only has one encoder. A Sensor Module, e.g. SMC30, is connected
as 2nd encoder at the axis module, which is connected with the directly mounted spindle actual
value encoder. The PROFIdrive telegram of the SINAMICS axis must be designed for two
encoder actual values. Depending on MD11240 $MN_PROFIBUS_SDB_NUMBER, the
standard SDB of SINUMERIK 828D supports Siemens telegram 116 or Siemens telegram 136.
Functional restrictions:
● There is no setpoint telegram for the analog spindle; this means that the functionality based
on the setpoint telegram is not available, e.g. DSC and torque feedforward control.
● The driver software simulates the "Drive ready" signal as being set.
● As drive parameters cannot be accessed, the associated functionality is restricted (e.g.
spindle utilization display, automatic speed and position controller tuning). The missing
values are shown in gray in the "Service Overview" dialog in the analog spindle column:
"This axis is not affected."
Connection for spindle setpoints
The analog spindle is connected to interface X252. Depending on the operating mode of the
analog spindle, the following signals are output:
Spindle type
Bipolar spindle
Unipolar spindle with separate en‐
able and direction signals
Unipolar spindle with direction-de‐
pendent enable
The D/A conversion of the spindle setpoint is realized with a 14-bit resolution.
CNC commissioning
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
4.5 Machine data for an analog spindle
Signal name Meaning
AOUT Analog output +/-10 V
AGND Analog output 0 V reference signal
DOUT11 Controller enable
AOUT Analog output +10 V
AGND Analog output 0 V reference signal
DOUT12 Negative direction of travel (remains set even if
there is no controller enable)
AOUT Analog output +10 V
AGND Analog output 0 V reference signal
DOUT11 Controller enable and positive direction of travel
DOUT12 Controller enable and negative direction of travel
Parameterizing machine data
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