Follow-Up Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Follow-up function

Follow-up function
The follow up function monitors the number of motor rotations (actual current value) with the servo OFF and reflects the value
in the feed current value.
If the servo motor rotates during the servo OFF, the servo motor will not just rotate for the amount of droop pulses at switching
the servo ON next time, so that the positioning can be performed from the stop position.
Execution of follow up
Follow up function is executed continually during the servo OFF status.
All axis servo ON
[Y1]
Each axis servo
OFF command
Servo ON or OFF
status
The follow up function performs the process if the "Motion module and the servo amplifier is turned ON" and
"servo OFF" regardless of the presence of the absolute position system.
In the following case, however, the follow up processing is performed even if the servo is ON.
*1 Control modes supported by the Motion module
- Position control mode
- Speed control mode
- Torque control mode
- Continuous operation to torque control mode
- Home position return mode
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ON
OFF
0
N
O
OFF
Follow-up function execution
• The servo amplifier is connected with a control mode other than the ones supported by the Motion
*1
.
module
search engine
1 0
Servo alarm detected
8 CONTROL SUB FUNCTIONS
8.9 Servo ON/OFF
8
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