External Absolute Encoder Data Reception Sequence; Electronic Gear Setting; Alarm Detection Settings; External Absolute Encoder Data Reception - YASKAWA SGD7S Product Manual

10.3 Parameter Settings for Fully-Closed Loop Control

10.3.5 External Absolute Encoder Data Reception Sequence

Example
Related Parameters
Pn281
Note: The maximum setting for the encoder output resolution is 4,096.
If the resolution of the external encoder exceeds 4,096, pulse output will no longer be possible at the resolu-
tion given in
10.3.5 External Absolute Encoder Data Reception Sequence
Refer to the following section for details.
6.13.4 Reading the Position Data from the Absolute Linear Encoder on page 6-88
With fully-closed loop control, the same sequence as for a Linear Servomotor is used.

10.3.6 Electronic Gear Setting

Refer to the following section for details.
5.16 Electronic Gear Settings on page 5-47
With fully-closed loop control, the same setting as for a Linear Servomotor is used.

10.3.7 Alarm Detection Settings

This section describes the alarm detection settings (Pn51B and Pn52A).
Pn51B (Motor-Load Position Deviation Overflow Detection
Level)
This setting is used to detect the difference between the feedback position of the motor
encoder and the feedback load position of the external encoder for fully-closed loop control.
If the detected difference exceeds the setting, an A.d10 alarm (Motor-Load Position Deviation
Overflow) will be output.
Pn51B
Note: An A.d10 alarm will not be output if this parameter is set to 0.
10-8
If the setting is 20 and the speed is 1,600 mm/s, the output frequency would be 1.6 Mpps
1600 mm/s
= 1,600,000 = 1.6 Mpps
0.001 mm
Because 1.6 Mpps is less than 6.4 Mpps, this setting can be used.
Encoder Output Resolution
Setting Range Setting Unit
1 to 4,096 1 edge/pitch

Feedback Resolution of Linear Encoder on page 5-50.
Motor-Load Position Deviation Overflow Detection Level
Setting Range Setting Unit
0 to
1 reference unit
1,073,741,824
Default Setting When Enabled
20 After restart
Default Setting When Enabled
1000 Immediately
Position
Classification
Setup
Position
Classifica-
tion
Setup