Detailed Description
2.12 Block descriptions
PLC Basic Program Solution Line (P3 sl)
2-182 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Restrictions
Star/delta changeover on digital main spindle drives initiates a process, which contains
closed-loop control sequences. Since the closed-loop control system supports automatic
star/delta changeover, certain restrictions should be noted:
• Due to the automatic deactivation of the pulses on the drive, IS "Current controller active"
(DB31, ... DBX61.7) and "Speed controller active" (DB31, ... DBX61.6) are deactivated
simultaneously to IS "Pulses enabled" (DB31, ... DBX93.7).
• If a changeover from star to delta takes place while the spindle is rotating and the spindle
position controller is switched on, IS "Position controller active" (DB31, ... DBX61.5), this
triggers interrupt 25050 "Contour monitoring".
• Once the star/delta changeover has been initiated with FC17, it cannot be delayed by the
user, e.g., by waiting until the star/delta contactors change over during the course of
operation. The user can implement this signal interaction with PLC logic.
Declaration of the function
STL representation
VAR_INPUT
YDelta: BOOL ; //Star = 0, delta = 1
SpindleIFNo: INT ; //Machine axis number
TimeVal: S5TIME ; //Time value
TimerNo : INT ; //User timer for changeover time
END_VAR
VAR_OUTPUT
Y: BOOL ; //Star contactor
Delta: BOOL ; //Delta contactor
END_VAR
VAR_IN_OUT
Ref: WORD ; //Block status word (instance)
END_VAR
Description of formal parameters
The table below lists all formal parameters of the YDelta function:
Signal Type Type Value range Remarks
YDelta I Bool = Star
= Delta
The changeover edge of the signal
initiates the changeover operation.
SpindleIFNo I Int 1.. Number of the axis interface
declared as a spindle
TimeVal I S5time 0.. Switchover time
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