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Motion Control

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ASDA-A3

7

7. Analog speed channel: when P5.088.Y = 6, the servo drive uses the analog speed

command as the master axis signal source; 10V corresponds to the frequency of 1 M

pulse/s.

ASDA-A3 provides two DOs, [0x18] CAM_AREA1 and [0x1A] CAM_AREA2, which specify the

current E-Cam operation position (in respect of the master axis). The first one is set by P5.090

and P5.091; the second one is set by P2.078 and P2.079, as shown in Figure 7.3.1.1. For

detailed settings, refer to Chapter 8.

Slave axis position

(PUU)

0 45 90 135 180 225 270 315 360

E-Cam phase(°)

DO: 0x18

P5.090 = 135 P5.091= 240

DO: 0x1A

P2.079 = 45

P2.078 = 270

Figure 7.3.1.1 DO is on when the clutch engages

To get the data for the master axis, use four monitoring variables, which are Accumulative pulse

of master axis, Incremental pulse of master axis, Pulse of master axis (lead pulse), and Position

of master axis. The following is the detail description for the four monitoring variables.

1. Accumulative pulse of master axis: monitoring variable code 059 (3Bh); the accumulative

pulse number of the E-Cam master axis. Same as P5.086.

2. Incremental pulse of master axis: monitoring variable code 060 (3Ch); the incremental

pulse number of the E-Cam master axis generated per 1 ms.

3. Pulse of master axis (lead pulse): monitoring variable code 061 (3Dh); when the clutch is

engaged, the master axis disengagement pulse number (P5.089) decrements to 0 and

then the clutch disengages; when the clutch is disengaged, the master axis lead pulse

number (P5.087 or P5.092) decrements to 0 and then the clutch engages.

4. Position of master axis: monitoring variable code 062 (3Eh); the position of the E-Cam

master axis.

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