Parker Products COMPAX-M /-S (L) manual External position localization with position adjustment

Operating Instructions	COMPAX-M / -S
External position localization with position adjustment

8.5.4 External position localization with position adjustment

Only available in COMPAX XX00!

Recommendation:

Configuring the external position adjustment:

The external position localization with position adjustment described below is only available in the standard unit (COMPAX XX00). Solutions adapted to specific applications are available in the unit variants.

A slip between motor position and the position of the drive (e.g. a material feed) is not detected. If the slip is too large, the external position can be entered(e.g. recorded by a measuring wheel) using encoder channel 1. In this way, COMPAX corrects the internal actual position value.

To limit access to the position adjustment, use P36 to limit the speed correction value resulting from the difference in positions.

This can be especially useful in the acceleration phase, if the material is slipping through because of the higher correction speed.

To avoid all inaccuracies during internal calculations, it is important to use the measuring unit "Increments".

Para-	Meaning	valid
meter		from..
P75	Maximum permitted measuring error (difference between resolver	VP
	position and encoder position)
	The external position adjustment is enabled using measuring
	error P75 > 0.
	When P75 is reached, error E15 is generated and the drive is
	switched off.
	Control position adjustment via digital input I11
	If the external position measurement and position adjustment
	(P75>0) is switched off, position adjustment operation can be
	switched on and off using input I11. For this, assign I11 with this
	function via P232=4.
	I11="0": External position adjustment switched off (reaction time
	approx. 5 ms).
	I11="1": External position adjustment switched on.
	P232 becomes effective immediately and has a default value of 0.
	If P232=0, I11 will not have an effect on the position adjustment;
	this is then switched on and off using P75.
	Note! If P232=4 (activated I11), I11 can no longer be used for
	GOTO / GOSUB EXT.
P36	Limitation of speed correction value for external position	VP
	adjustment (only available in COMPAX XX00 and COMPAX XX30)
	"0": switched off (default value)
	When P36=0, the speed correction value is not limited.
	P36 is specified in % of the nominal speed (P104).
	Note! When position localization is switched off, P36 must = 0!
P144	Sets encoder channel 1	VC
	="4": without external position localization
	="6": external position localization switched on via channel 1.
P143	Number of encoder pulses per encoder rotation from channel 1;	VC
	range: 120...2 000 000.
P98	Travel of load per encoder rotation units (corresp. to P90).	VC

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