Siemens SINUMERIK 808D ADVANCED

Detailed descriptions of interface signals
4.8 Axis / spindle-specific signals
Parameter Manual
418 Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
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
superimposed 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
component or this has been completed.
corresponding to ... DB390x DBX2002.4 (synchronous mode)
Note for the reader Function Manual Basic Functions S1
DB390x
DBX5002.5
Velocity alarm threshold reached
Signal(s) from axis / spindle (NCK → PLC)
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 When the velocity of the following axis in the axis grouping of the electronic
gear reaches or exceeds the percentage of the velocity entered in MD37550
, which is set in MD32000, then the signal is set to 1.
Signal state 0 The velocity of the following axis in the axis grouping of the electronic gear
falls below the threshold value described above.