PAC_ParisonControl (FB)

FUNCTION_BLOCK PAC_ParisonControl

This function block is the implementation of a parison controller, which all motion processes are executed inside.

Indicators for filling and extrusion

For ACCUMULATOR type:

EndOfFilling gets to True,

with EXTRUSION_FIXED type, when the position percentage of the accumulator is greater than Delay + ShotSize + Cushion. with FILLING_FIXED type, when the position percentage of the accumulator is greater than 100- Delay * 0.1.

EndOfExtrusion gets to True,

with EXTRUSION_FIXED type, when the position percentage of the accumulator is less than Cushion. with FILLING_FIXED type, when the position percentage of the accumulator is less than 100 - Delay - ShotSize.

For CONTINUOUS type:

EndOfFilling is always False. EndOfExtrusion gets to True when the parison control completed.

Conditions for the effectiveness of each movement

For ACCUMULATOR type:

Standby: PowerOn = True, means the function block and the die axis are both enabled.

ProfileRunning = False, means the parison profile is not running. Stopping = False, means the die axis is not stopping.

DieGap: PowerOn = True, means the function block and the die axis are both enabled.

ProfileRunning = False, means the parison profile is not running. Stopping = False, means the die axis is not stopping.

Purge: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping.

Tooling: PowerOn = True, means the function block and the die axis are both enabled.

ProfileRunning = False, means the parison profile is not running. Stopping = False, means the die axis is not stopping.

Start: PowerOn = True, means the function block and the die axis are both enabled.

EndOfFilling = TRUE, means the accumulator is fully filled. ProfileRunning = False, means the parison profile is not running. Stopping = False, means the die axis is not stopping. If all conditions are met, “Ready” will change to True automatically.

For CONTINUOUS type:

Standby: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping.

DieGap: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping.

Purge: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping.

Tooling: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping.

Start: PowerOn = True, means the function block and the die axis are both enabled.

Stopping = False, means the die axis is not stopping. If all conditions are met, “Ready” will change to True automatically.

Automatical cycle time calculation

For CONTINUOUS type, when AutoTime = True, the time interval between the two triggering of the “Start” will be automatically set as the control time for the next parison control. The values of “Delay” and “ShotSize” will be automatically allocated in proportion.

Note

The molding parameters are only loaded during the rising edge of the input Enable.

Note

This function block must be called in the POU which is executing in the MotionSolution_Task.

InOut:

Scope	Name	Type	Initial	Comment
Input	Enable	BOOL		Enable the function block and the die axis
	Standby	BOOL		Move the die from the current position to the position of the first profile point; for the accumulator type, only acceptable when ProfileRunning is False
	Start	BOOL		Cycle start
	AutoTime	BOOL		True to enable the automatical calculation of the cycle time for the continuous extrusion
	PhaseChecker	BOOL		True to allowed the parison thickness is determined by the enabled phase checkers which are defined in parison profile
	Delay	LREAL	10	[% or s] For the accumulator type, the volume of the delay which is extruded before the parison control starts, range: > 0 and < 100; For the continuous type, the delayed time before the parison control starts
	ShotSize	LREAL	80	[% or s] For the accumulator type, the volume of the shot size which is extruded used for the parison control, range: > 0 and < 100; For the continuous type, the time to complete the parisoin control
	Cushion	LREAL	5	[%] For the accumulator type and EXTRUSION_FIXED only, the volume of the cushion which is left in accumulator after the parison control finish, range: > 0 and < 100
	DieGap	BOOL		With rising edge, move the die to the default gap
	Purge	BOOL		With rising edge, move die to purge gap
	Tooling	BOOL		With rising edge, move die to tooling gap
	DefaultGap	LREAL	1	[%] The default die gap, range: 0 ~ 100
	PurgeGap	LREAL	100	[%] The die gap during the accumulator purge, which is expressed as a percentage of the die stroke, range: ToolingGap ~ 100
	ToolingGap	LREAL	0	[%] The die gap during changing the material, which is expressed as a percentage of the die stroke, range: 0 ~ PurgeGap
	Stop	BOOL		Stop the movement of the die
	Reset	BOOL		Reset error of both parison control and core axis
	Home	BOOL		With rising edge, start the calibration process, not available for now
	JogUp	BOOL		Move die up as long as JogUp = TRUE
	JogDown	BOOL		Move die down as long as JogDown = TRUE
	JogVelocity	LREAL	10	[mm/s] Velocity to jog
	GapVelocity	LREAL	10	[mm/s] The velocity used by input DieGap, Purge, Tooling to change the die gap
	Acceleration	LREAL	100	[mm/s2] Acceleration for jog and die moving
	Deceleration	LREAL	100	[mm/s2] Deceleration to jog and die moving
	AccumulatorActualValue	LREAL	0	The actual raw value of the position feedback of the accumulator
	DieActualValue2	LREAL	0	The actual raw value of the position feedback 2 of the die, the position feedback 1 is internally read via the actual position of die axis
Output	PowerOn	BOOL		Indicates that the parison control and die axis are both enabled
	Busy	BOOL		Indicates that the function block is runnig
	Error	BOOL		Signals that error has occurred within function block
	ErrorID	AC500_MotionControl.ERROR_ID		Error identification. For error details refer to AC500_MotionControl.Enumeration ERROR_ID
	AppErrorID	ERROR_ID		Error identification. For error details refer to Enumeration ERROR_ID
	Ready	BOOL		Indicates that the start signal can be received
	Stopping	BOOL		Indicates that the die axis is stopping, no other movement can be received
	ProfileRunning	BOOL		Indicates that the parison profile is running
	CurrentPoint	INT		The current point of the profile on which the parison control is, range: 1 ~ Profile.NumberOfPoints
	CurrentProgress	LREAL		[%] The current progress of the parison control, range: 0 ~ 100
	StandbyReached	BOOL		Indicates that the start gap of the profile has been reached
	DefaultGapReached	BOOL		Indicates that the default gap has been reached
	PurgeGapReached	BOOL		Indicates that the purge gap has been reached
	ToolingGapReached	BOOL		Indicates that the tooling gap has been reached
	ActualThickness	LREAL		[%] The actual thickness
	DieActualPosition	LREAL		[mm] The actual position of die
	EndOfFilling	BOOL		Indicates that the filling of the accumulation can be stopped
	EndOfExtrusion	BOOL		Indcates that the injection of the accumulation can be stopped. in continuous mode, ON until the next start
	AccumulatorPosition	LREAL		[%] The actual position of the accumulator, full: 100%; empty: 0%
Inout	MoldingParameter	PAC_MoldingParameter		Reference to the molding parameters
	ProfileID	PAC_ParisonProfileID		Reference to the parison profile ID
	DieAxis	Axis_Ref		Reference to the die axis