Application With the variable signaling function the machine tool manufacturer can mon‐
itor one additional threshold value for specific applications for each axis /
spindle and evaluate the result in the PLC user program.
Example:
The interface signal "Variable signaling function" should be set to 1 when
the motor torque exceeds 50% of the rated torque.
Note for the reader Commissioning Manual, Turning and Milling
DB390x
DBX4003.0
V
DClink
< V
DClinkx
Signal(s) to drive (NCK → PLC)
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 The drive signals the PLC that the DC link voltage V
DClink
is less
than the DC
link undervoltage threshold V
DClinkx
.
The DC link undervoltage threshold is defined using r0296.
The DC link undervoltage threshold should be defined to be greater than 400
V. If the DC link voltage drops below 280 V, the unit is powered-down by the
hardware.
Signal state 0 The DC link voltage is less than the DC link undervoltage alarm threshold.
corresponding to ... r0296 (DC link voltage, undervoltage threshold)
Note for the reader Commissioning Manual, Turning and Milling
DB390x
DBX5002.4
Superimposed motion
Signal(s) from axis / spindle (NCK → PLC)
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 The following spindle executes an additional motion component, that is su‐
perimposed on the motion from the coupling with the leading spindle.
Example for superimposed motion of the following spindle:
● Activating the synchronous
mode with a defined angular offset between
the following spindle and leading spindle.
● Activating the synchronous mode for rotating leading spindle.
● Changing the ratio while the synchronous mode is active.
● Entering a new defined angular offset when the synchronous mode is
active
● Traversing the following spindle with plus or minus traversing keys or
handwheel in JOG when the synchronous mode is active.
As soon as the following spindle executes a superimposed motion, IS "Fine
synchronism" or IS "Coarse synchronism" (depending on threshold value)
may be canceled immediately.
Signal state 0 The following spindle does not traverse through any additional motion com‐
ponent or this has been completed.
corresponding to ... DB390x DBX2002.4 (synchronous mode)
Note for the reader Function Manual Basic Functions S1
Detailed descriptions of interface signals
5.8 Axis / spindle-specific signals
Parameter Manual
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1 447
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