Siemens SINUMERIK 840D sl Function Manual page 2037

DB31, ...
DBX21.3 - DBX21.4
Motor selection A, B
Edge evaluation: no
Meaning The PLC can switch between 4 different motors or motor mode types using the motor selection
function.
The following assignment applies:
As soon as a new motor selection is detected, the drive cancels the pulse enable (feedback signal
using the interface signal DB31, ... DBX93.3 and 4 (active motor)).
Using the motor selection, it is possible, for example, to choose mode 1 as star-connected
operation and mode 2 as delta-connection operation for the main spindle drive (MSD).
The drive signals the currently selected motor back to the PLC using the interface signals:
DB31, ... DBX93.3 and 4 (active motor).
Signal irrelevant for SINUMERIK 810D
...
Application Timing for stardelta switchover
example(s)
Special cases, Notice:
errors, .... Before a new motor is selected, the interface signal:
DB31, ... DBX21.5 (motor selected)
must be set to 0!
Corresponding to .... DB31, ... DBX93.3 and 4 (active motor)
DB31, ... DBX21.5 (motor selected)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Signal(s) updated: cyclic
2.1 Various interface signals and functions (A2)
Detailed Description
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