Appendices
A-66
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
• These objects set the gear ratio.
• Set the numerator of the electronic gear in the object for sub-index 01h (Motor revolutions). If the set
value is 0, the encoder resolution will be set as the numerator.
• Set the denominator of the electronic gear in the object for sub-index 02h (Shaft revolutions).
• Set the gear ratio to between 1/1,000 and 1,000. If the gear ratio is out of range, an Object Setting
Error (Error No. 93.0) will occur.
• If the set value of Motor revolutions is 0, the encoder resolution will be set as the numerator, even for
fully-closed control.
• If you are mapping the Reference Position for CSP (4020 hex) to the PDO, be sure to set the
electronic gear ratio to 1:1.
Unless set to 1:1, a Function Setting Error (Error No. 93.4) will occur.
• Refer to 7-6 Electronic Gear Function on page 7-21 for details.
Precautions for Correct UsePrecautions for Correct Use
•
The electronic gear function is not supported for unit version 2.0. Use the G-series Servo Drive in
the setting of 1:1.
6091 hex
Gear ratio
Sub-index 00 hex Number of entries
Range − Unit − Default 02 hex Attribute −
Size 1 byte (U8) Access RO PDO map Not possible
Sub-index 01 hex Motor revolutions
Range 0 to
1,073,741,824
Unit − Default 1 Attribute C
Size 4 bytes (U32) Access RW PDO map Not possible
Sub-index 02 hex Shaft revolutions
Range 1 to
1,073,741,824
Unit − Default 1 Attribute C
Size 4 bytes (U32) Access RW PDO map Not possible
All
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