Infinite Feed Function [G] [Wg]; Outline; Setting Method; When The Servo Motor Rotates 32768 Rev Or More - Mitsubishi Electric MELSERVO-J5 Series User Manual

4.15

Infinite feed function [G] [WG]

Outline

When this function is used in an absolute position detection system, even if the servo motor rotates 32768 rev or more in the
same direction, [AL. 0E3.1 Multi-revolution counter travel distance exceeded warning] will not occur and the home position will
not be erased. Therefore, the current position will be restored after the power is cycled.
When this function is not used, if the servo motor rotates 32768 rev or more in the same direction, [AL. 0E3.1 Multi-revolution
counter travel distance exceeded warning] will occur and the home position will be erased.
• This function is available on servo amplifiers with firmware version B6 or later.
• To use this function, set the unit to "degree" with the servo amplifier.
Page 287 Degree unit [G] [WG]

Setting method

Set the unit to "degree".
Page 287 Degree unit [G] [WG]

When the servo motor rotates 32768 rev or more

The following table shows whether [AL. 0E3.1] will occur, the home position will be erased, and the current position will be
restored when the servo motor rotates 32768 rev or more.
Control mode
Cyclic synchronous mode
Profile position mode
*1 When [Pr. PC29.5 Absolute position counter warning [AL. 0E3.1] selection] is set to "0" (disabled), [AL. 0E3.1] will not occur and the
home position will not be erased. However, if "0" is set while the unit is other than "degree", the current position will not be restored
correctly after the power is cycled. As this will result in an incorrect current position value, set [Pr. PC29.5] to "1" (enabled).

When using the infinite feed function with a controller

To use the infinite feed function with a Mitsubishi Electric controller in the cyclic synchronous mode, set [Pr. PC29.5 [AL. 0E3.1
Absolute position counter warning] selection] to disabled.
For information on the controller, refer to "Absolute Position Control" in the following manual.
MELSEC iQ-R Motion Module User's Manual (Application)
Unit for position data
pulse
degree
pulse
[AL. 0E3.1] Home position
*1
Will occur Will be erased
*1
Will not occur Will not be erased
*1
Will occur Will be erased
4.15 Infinite feed function [G] [WG]
Current position
Will not be restored
Will be restored
Will not be restored
4 APPLICABLE FUNCTIONS
4
291