Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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7 CONTROL SUB FUNCTIONS
7.8 Function Related to Stop
269
7
7.8
Function Related to Stop
As the functions related to stop, Stop command processing for deceleration stop function, Continuous operation interrupt
function, and Step function are provided. Each function is executed by setting parameters or creating and writing a program.
Stop command processing for deceleration stop function
Stop command processing for deceleration stop function is provided to set the deceleration curve if a stop cause occurs
during the deceleration stop processing (including automatic deceleration).
This function is valid for both trapezoidal and S-curve acceleration/deceleration processing methods.
For details on the stop cause, refer to the following.

Page 32 Stop processing
Stop command processing for deceleration stop function consists of the deceleration curve re-processing function and
deceleration curve continuation function.
Control details
The following shows the operation of the stop command processing for deceleration stop function.
■ Deceleration curve re-processing
A deceleration curve is re-processed starting from the speed at the stop cause occurrence to top, according to the set
deceleration time. If a stop cause occurs during the automatic deceleration of the position control, the deceleration stop
processing stops as soon as the target has reached the positioning address specified in the positioning data currently being
executed.
■
Deceleration curve continuation
The current deceleration curve is maintained after the occurrence of a stop cause. If a stop cause occurs during the automatic
deceleration of the position control, the deceleration stop processing may be completed before the target has reached the
positioning address specified in the positioning data currently being executed.
t
V
Stop cause
occurrence
Deceleration curve according
to set deceleration time
Deceleration curve when a stop
cause does not occur.
Immediate stop at the specified
positioning address
Deceleration stop processing
(automatic deceleration) start
V
t
Stop cause occurrence
Deceleration stop processing
(automatic deceleration) start