Parker Products COMPAX-M /-S (L) manual Fast start, Assignments Function

Application examples	COMPAX-M/S
Fast start
11.1.7 Fast start

Application:

Material should be fed to an extender stamping machine which operates at a maximum speed of 150 rpm. The material may only be supplied if the stamping tool is open and if the workpiece (already stamped) has been thrown up. The material supply should be released or blocked via a switch.

Assignments:

Function:

range within which positioning can be carried out	initiator	COMPAX
210° = 233ms

I15	1
	0						+24V
100%								I5
		1.5ms
rotational
speed
	0						disable
	0°	90°	180°	270°	360° j			I15
	0	100	200	300	400	t / ms	enable

When the stamping machine runs at an operating speed of 150 strokes a minute, an operating cycle lasts 400 ms. The operating angle (at which the material can be fed) is 210°. 233 ms therefore remain for the feed movement. To ensure that the necessary drive dynamics are kept within these limits, as much of this time as possible must be used for the actual feed movement. This is why, the fast START is used here as it has a response time of only 1.5 ms. The feed movement is triggered by the signal that the initiator (on the eccentric axis) transfers via the release switch to COMPAX (I15) at an angle of ϕ = 90º.

Once the system has been switched on, COMPAX is started via a start pulse on I5. The values for the accelerating and braking time are set in N001 and N002, as are those for the feed speed. The positioning command in N003 is only performed, if a rising flank (from 0 to 1) is detected on I15 (fast START). The time between the rising flank and the start of the feed movement is 1.5 ms. Data record N004 is used to return to N003 which ensures that the next positioning command is prepared. This is then performed after a rising flank on I15.

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