01/2007
18.3 Travel to fixed stop with high–resolution torque reduction
18-517
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
18.3.5 Parameterization: External drives
If third–party drives are used, please read the manufacturer’s documentation to
see whether and how to set the parameters on the drive.
18.3.6 Parameter assignment: SINUMERIK 840Di sl NCK
In the SINUMERIK 840Di sl NCK system, the parameters for evaluating torque
reduction are assigned via the axis–specific machine data:
S MD37620: $MA_PROFIBUS_TORQUE_RED_RESOL
During automatic adjustment, the NCK attempts to read the drive parameters in
the following system states:
– SINUMERIK 840D sl boot.
– Status: ”Incoming station” of the DP slave drive
If the value set for the drive does not match the parameter assigned in the NCK
evaluation, the value defined by the drive is applied to the NCK machine data.
The resulting renormalization of the machine axis in question is shown by the
following message:
S Alarm 26024 ”Axis axis identifier machine data
$MA_PROFIBUS_TORQUE_RED_RESOL value adapted”.
If the value of the drive parameter converted into NCK format lies outside the
machine data limit values, the value set in the machine data is retained. No
message is displayed.
Note
You can disable automatic adjustment via:
S MD13070: $MN_DRIVE_FUNCTION_MASK[n], Bit 15 = 0
If any of the aforementioned requirements for automatic adjustment is not met,
the NCK machine data and drive parameters must be adjusted manually.
S MD37620: $MA_PROFIBUS_TORQUE_RED_RESOL = drive parameter:
”Torque reduction evaluation”
Assumptions:
– Machine axis X1 corresponds to drive 12A
– The torque reduction evaluation is to be 0.1%
Automatic
adjustment
Manual
parameterization
Example for
SIMODRIVE 611U
18 840Di–s
ecific Data and Functions
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