Siemens SINUMERIK 840D sl Function Manual page 1576

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB31, ...
DBX20.1
Ramp-function generator disable
Edge evaluation: No
Signal state 1 A rapid stop with speed setpoint 0 is requested for the drive. The drive is stopped without a ramp
function (regenerative braking).
Feedback for the triggering of the rapid stop in the drive is via:
DB31, ... DBX92.1 == 1 (ramp-function generator disable active)
Signal state 0 No rapid stop with speed setpoint 0 is requested for the drive.
Corresponding to ... DB31, ... DBX92.1 (ramp-function generator disable active)
Remark A PROFIDrive telegram compatible with the "SIMODRIVE 611 universal" interface mode must be set
in the drive.
See drive parameters: p0922 and p2038
Additional references NC: CNC Commissioning Manual: NCK, PLC, Drive
Drive: SINAMICS S120/S150 List Manual
DB31, ...
DBX21.0 - DBX21.4
Motor/drive data set: Request interface
Edge evaluation: No
Meaning The switchover to a new motor (MDS) and/or to drive data sets (DDS) is requested via the interface:
Formatting the request interface, i.e. which bits are used to address the motor data sets (MDS) – and
which are used to address the drive data sets (DDS) is set via the formatting interface.
Remark For main spindle drives:
● MDS[ 0 ] → star operation
● MDS[ 1 ] → delta operation
Application exam‐ For example, it is possible to switch between operating mode 1 (star operation) and operating mode
ple(s) 2 (delta operation) for a main spindle drive (MSD) by switching over the motor data set.
It may be necessary to switch over the drive parameter set, for:
● Gear stage change
● Changing the measuring circuit
Special cases, In principle it is possible to switch over drive parameter sets at any time. However, as torque jumps
errors, .... can occur when switching over speed controller parameters and motor speed normalization, param‐
eters should only be switched over in stationary states, especially axis standstill.
As soon as the request to switch over to another motor data set is identified, the pulses enable is
reset.
Corresponding to ... DB31, ... DBX93.0 - 4 (motor/drive data set: display interface)
DB31, ...DBX130.0 - 4 (motor/drive data set: formatting interface)
DB31, ... DBX21.5 (motor being selected)
Additional references ● Function Manual, Basic Functions, Chapter "A2: Various NC/PLC interface signals and functions"
● CNC Commissioning Manual: NCK, PLC, Drive
1576
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
> "Switchover motor/drive data sets"
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions