R3: Extended Stop And Retract; Signals From Axis/Spindle (Db31 - Siemens SINUMERIK 840D sl Function Manual

DB31, ...
DBX98.6
Signal irrelevant ...
Corresponding to ...
DB31, ...
DBX99.3
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Signal irrelevant ...
Corresponding to ...
25.5

R3: Extended stop and retract

25.5.1

Signals from axis/spindle (DB31, ...)

DB31, ...
DBX95.1 ESR: DC link undervoltage
Edge evaluation: No
Signal state 1 The drive signals that the DC link voltage V
with parameter p1248.
Signal state 0 The drive signals that the DC link voltage V
set with parameter p1248.
Application exam‐ The PLC user program can initiate measures in order to safely end machining and/or to buffer the
ple(s) DC link voltage, e.g. initiate a drive-autonomous and/or control-managed extended stop and retract
(ESR).
Corresponding to ....
● Drive parameter p1248 (lower DC link voltage threshold)
● Drive telegram MELDW.Bit 4
Additional references Commissioning Manual IBN CNC: NCK, PLC, Drive
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Acceleration warning threshold
Without electronic gear.
The following machine data:
MD37550 $MA_EG_VEL_WARNING (threshold value velocity alarm threshold)
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
Axis accelerated
Signal(s) updated: Cyclic
When the following axis acceleration in the axis grouping of the electronic gear (set in machine
data MD32300) reaches or exceeds the acceleration % block entered in machine data
MD37560, the signal is set to 1.
The following axis acceleration in the axis grouping of the electronic gear is less than the
operating value described above.
Without electronic gear.
The following machine data:
MD37560 $MA_EG_ACC_TOL (threshold value for "Accelerate axis")
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
Signal(s) updated: Cyclically
Z3: NC/PLC interface signals
25.5 R3: Extended stop and retract
is less than the lower DC link voltage threshold set
DC link
is greater than the lower DC link voltage threshold
DC link
813