Electronic Gear Setting; Alarm Detection Settings - YASKAWA SGD7S Product Manual
E-7-series
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- Product manual (629 pages) ,
- Selection manual (337 pages) ,
- Product manual (621 pages)
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10.3 Parameter Settings for Fully-Closed Loop Control
10.3.5 Electronic Gear Setting
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 Electronic Gear Setting
Refer to the following section for details.
5.14 Electronic Gear Settings on page 5-40
With fully-closed loop control, the same setting as for a Linear Servomotor is used.
10.3.6 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 Servomotor
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 Error Over-
flow) will be output.
Pn51B
Note: If you set this parameter to 0, A.d10 alarms will not be output and the machine may be damaged.
Pn52A (Multiplier per Fully-closed Rotation)
Set the coefficient of the deviation between the Servomotor and the external encoder per Ser-
vomotor rotation.
This setting can be used to prevent the Servomotor from running out of control due to damage
to the external encoder or to detect belt slippage.
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 5-43.
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
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