Delta Electronics CTA4 Manuel d'utilisateur télécharger pdf (Page 24)

CTA USER MANUAL

 Output Wiring

Connect

0V, CP1 (phase A) and CP2 (phase B) to CN1 terminal on ASDA-A servo drive

Assume

The set value in the CTA counter is 160mm. When the counting reaches 160mm, an output signal will be given

to the knife for the cutting. See figure 2.

In the figure, we can see the diameter of the roller is 44.8mm

Delta encoder 1 phase = 2,500ppr

Calculate the pre-scale value

ppr

= Prescale

π: 3.1416

D: diameter of the roller

ppr: number of pulses per revolution of the encoder

Prescale =

ppr

2500

84414163 .x.

= 0.056mm/pulse

When the value in CTA = 2,858

2858 x 0.056 = 160mm (actual moving distance)

Figure 1

SV has to be 160mm

Figure 2

The servo drive stops at 100mm on the ruler before its

operation

100mm

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Delta Electronics CTA4 Manuel d'utilisateur Page 24