Siemens SINUMERIK 840D Function Manual page 560

M3: Coupled axes
14.5 Generic coupling
Requirements
The following requirements must be met to enable the controller to calculate the correction
value:
● Requirements if the set coupling type is "synchronous spindle" (CPSETTYPE="COUP"):
– The coupling has precisely one leading spindle (requirement is met
– The coupling factor (quotient from CPLNUM and CPLDEN) is 1 or -1.
– The following value is derived from the setpoint position ("DV") or the actual position
– Setpoint synchronism must be achieved:
– Setpoint synchronism must not decline again.
– No overlaid movement (DB31, ... DBX98.4 = 0) must be present.
– A dynamics limit is required for the leading spindle, in order to exclude the possibility of
● Requirements for a free generic coupling with CPFRS="machine":
– The configured spindles are coupled.
– The coupling has precisely one leading spindle.
– The coupling factor (quotient from CPLNUM and CPLDEN) is 1 or -1.
– The following value is derived from the setpoint position (CPLSETVAL="CMDPOS") or the
– Setpoint synchronism must be achieved:
– Setpoint synchronism must not decline again.
– No overlaid movement (DB31, ... DBX98.4 = 0) must be present.
– A dynamics limit is required for the leading spindle, in order to exclude the possibility of
Note
Dynamics limit for the leading spindle
The "dynamics limit for the leading spindle" property is specified automatically when the
"synchronous spindle" coupling type (CPSETTYPE="COUP") is set. In the case of other
coupling types, it is the particular responsibility of the user/machine manufacturer to provide
suitable measures to ensure that the following spindle cannot become dynamically overloaded.
Activation
Measuring and tracking of the deviation from synchronism are activated by setting the following
NC/PLC interface signal to "1":
DB31, ... DBX31.6 (track synchronism)
560
if CPSETTYPE="COUP").
("AV") of the leading spindle.
DB31, ... DBX99.4 (synchronization running) = 0
the following spindle being subjected to excessive demands.
actual position (CPLSETVAL="ACTPOS") of the leading spindle.
DB31, ... DBX99.4 (synchronization running) = 0
the following spindle being subjected to excessive demands.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA