Delta ASDA-A3 Series User Manual page 516

ASDA-A3
You can use Macro #7 of the servo drive to create the table with the same method. 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:
Set the start position for the data array: use P5.081 to specify the data array start position
1.
for E-Cam and use P5.085 to set the E-Cam's segment number for clutch engagement.
When Macro #7 is used, the range of E-Cam segment (P5.082) is 30 - 72. It is suggested
that you set the segment to 72 for the optimal resolution of 5°.
Set the system E-Gear ratio: set the system E-Gear ratio with P1.044 and P1.045.
2.
Set the E-Cam's gear ratio and curve scaling: set the pulse number required for the cutting
3.
length, which is P5.083 = 1 and
Pulse number per revolution of the master axis encoder ��
P5.084 =
Use P5.019 to specify the E-Cam curve scaling.
Set the parameters for the E-Cam curve zones: specify the size of the waiting, acceleration,
4.
synchronous speed, and S-curve zones. P5.093.DCBA sets the S-curve level (S) with the
range of 1 - 4; the calculation for the corresponding angle (S°) is as follows. P5.093.UZYX
sets the angle (W) of the waiting zone with the range of -1° to 170° in hexadecimal. If you
enter -1 (0xFFFF), it means the cutter speed is 0 in the waiting zone and the angle for the
waiting zone is calculated by the servo drive. P5.094 sets the angle (Y) of the synchronous
speed zone with the range of 0° - 330° in decimal format. The acceleration zone is
automatically calculated by the servo drive, as shown in the following formula.
As the synchronous speed zone is adjustable, there are limitations when using Macro #7
to create the waiting zone of the E-Cam curve. The conditions are as follows.
�� × master axis encoder diameter ��2(����)
��° =
E − Cam segment number ��5.082
360° = 2�� + 2������ + 2��° + ��
�� ̂ (minimum waiting zone) = 180° +
× Cutting length ��(����).
��
2 × 360°
360° 360°
−
��5.082 ��
Motion Control
��
+
2
7
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