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

6.4

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 message frame 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 message frame 116 or Siemens message frame 136.
Functional restrictions:
● There is no setpoint message frame for the analog spindle; this means that the
● The driver software simulates the "Drive ready" signal as being set.
● As drive parameters cannot be accessed, the associated functionality is restricted (e.g.
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
enable and direction signals
Unipolar spindle with direction-
dependent enable
The D/A conversion of the spindle setpoint is realized with a 14 bit resolution.
Turning and Milling
Commissioning Manual, 02/2012, 6FC5397-3DP40-3BA0
functionality based on the setpoint message frame is not available, e.g. DSC, torque
feedforward control.
spindle utilization display, automatic speed and position controller optimization). The
missing values are shown in gray in the "Service Overview" dialog in the analog spindle
column: "This axis is not affected."
6.4 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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