Siemens SINUMERIK 840Di Function Manual page 1904

Detailed Description
2.1 Various interface signals and functions (A2)
DB31, ...
DBX21.3 - DBX21.4 Motor selection A, B
Corresponding to .... DB31, ... DBX93.3 and 4 (active motor)
DB31, ... DBX21.5 (motor selected)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
DB31, ...
DBX21.5 Motor selection in progress
Edge evaluation: no
Signal state 1 or The PLC outputs the interface signal:
edge change DB31, ... DBX21.5 (motor selected)
0 → 1 to the 611D to confirm that the external contactor has been switched over to the new motor (e.g.
that motor contactor 2 has been energized as part of the star/delta switchover process).
The pulses are then enabled by the drive.
Signal state 0 or The interface signal:
edge change DB31, ... DBX21.5 (motor selected)
1 → 0 must be reset to 0 by the PLC user program before a new motor is selected! Otherwise the pulses
from the drive might be enabled too early.
Signal irrelevant SINUMERIK 810D
for ...
Corresponding to .... DB31, ... DBX93.3 and 4 (active motor)
DB31, ... DBX21.3 and 4 (motor selection A, B)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
DB31, ...
DBX21.6 Speed controller integrator disable
Edge evaluation: no
Signal state 1 or The interface signal is used by the 611D/611U to disable the integrator of the speed controller.
edge change The speed controller is thus changed over from a PI to a P controller.
0 → 1
Note:
If the speed controller integrator disable is activated, equalization processed might take place in
certain applications (e.g. if the integrator was already holding a load while stationary).
The 611D/611U acknowledges the integrator disable to the PLC using the interface signal:
DB31, ... DBX93.6 (speed controller integrator disabled).
Signal state 0 or The integrator of the speed controller is enabled.
edge change
1 → 0
Signal irrelevant SINUMERIK 810D
for ...
Corresponding to .... DB31, ... DBX93.6 (integrator n-controller disabled)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
2-40
Signal(s) updated: cyclic
Signal(s) updated: cyclic
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0