Siemens sinumerik 840D sl Function Manual page 916

DB31, ...
DBX98.6
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Signal irrelevant ...
Corresponding to ....
DB31, ...
DBX98.7
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Application example(s)
DB31, ...
DBX99.3
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Special functions: NC/PLC interface signals (Z3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Acceleration warning threshold
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 MD37550, the signal is set to 1.
The following axis acceleration in the axis grouping of the electronic gear is less than the
threshold value described above.
Without electronic gear.
the following machine data:
MD37550 $MA_EG_VEL_WARNING (velocity warning threshold value)
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
ESR reaction is triggered
Signal(s) updated: Cyclic
Status signal
The VDI signal "ESR reaction triggered" is available to the PLC as a check-back signal.
The signal is set if $AA_ESR_STAT > 0, i.e. if:
generator mode, cancellation or retraction functions
•
Intermediate circuit low voltage detected
•
or
Generator speed lower than minimum setting
•
ESR is not active.
For safety reasons, EMERGENCY STOP interrupts the interpolation and all traversing
movements, and also dissolves the electronic coupling by canceling the servo enables. In
applications where the coupling and traversing movements must remain valid after
EMERGENCY STOP, this EMERGENCY STOP must be delayed long enough by the PLC
for the required NC or drive-end reactions to terminate.
Writing in $A_DBB allows the PLC to extensively influence the execution of the ESR
reactions, if appropriate access is also integrated into the synchronized actions. On the
840D, the PLC has a "locking influence" on the ESR response. On the 840D, it is possible to
link the relevant synchronized actions to produce the desired logic.
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.
Detailed description
2.5 Axis Couplings and ESR (M3)
15