Detailed Description
2.1 Various interface signals and functions (A2)
NC/PLC Interface Signals (Z1)
2-40 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The PLC outputs the interface signal:
DB31, ... DBX21.5 (motor selected)
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
edge change
1 → 0
The interface signal:
DB31, ... DBX21.5 (motor selected)
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
for ...
SINUMERIK 810D
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(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The interface signal is used by the 611D/611U to disable the integrator of the speed controller.
The speed controller is thus changed over from a PI to a P controller.
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
edge change
1 → 0
The integrator of the speed controller is enabled.
Signal irrelevant
for ...
SINUMERIK 810D
Corresponding to .... DB31, ... DBX93.6 (integrator n-controller disabled)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
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