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Motion Control

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ASDA-A3

7

 Create E-Cam curve with fixed synchronous speed zone

This method allows you to create a rotary shear curve with fixed synchronous speed zone,

which range is fixed to 51°. You can use ASDA-Soft to create the table, which parameter setting

is similar to the curve for rotary shears without synchronous speed zone, as shown in Figure

7.3.7.10. The software automatically limits the cutting length by referring to the ratio (R) of the

cutting length (L) and the arc length between cutter ends (a); R = L / a; R = 0.07 - 2.5.

Figure 7.3.7.10 ASDA-Soft setting interface for [Rotary Shear- Fixed Sync. Zone]

You can use Macro #6 of the servo drive to create the table with the same method and the

curve created is the same as that generated with ASDA-Soft. The advantage of using the macro

to create an E-Cam curve is that when changing the cutting length is required, you can create a

new curve simply by modifying the parameters. It is very friendly for those applications that

require frequent modification of the cutting length. The setting steps are as follows:

1. Set the start position for the data array: use P5.081 to specify the data array start position

for E-Cam and use P5.085 to set the E-Cam’s segment number for clutch engagement.

When Macro #6 is used, P5.082 E-Cam segment number can only be 7, which means the

curve resolution is 51° and the synchronous speed zone is also 51°.

2. Set the system E-Gear ratio: set the system E-Gear ratio with P1.044 and P1.045.

3. Set the E-Cam’s gear ratio and curve scaling: set the pulse number required for the cutting

length, which is P5.083 = 1 and

P5.084 = Pulse number per revolution of the master axis encoder ������ × Cutting length ������(������������).

������ × master axis encoder diameter ������2(������������)

Use P5.019 to specify the E-Cam curve scaling.

7-110

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