Mitsubishi Electric MELSEC Q Series, User Manual

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Chapter 13 Control Sub Functions
13.4.5 Forced stop function
DANGER
When the forced stop is required to be wired, ensure to wire it in the negative logic using b-
contact.
Provided safety circuit outside the Simple Motion module so that the entire system will operate
safety even when the "[Pr.82] Forced stop valid/invalid selection" is set "1: Invalid". Be sure to
use the forced stop signal (EMI) of the servo amplifier.
This function stops all axes of the servo amplifier with the forced stop signal. (The
initial value is "0: Valid (External input signal)".)
The forced stop input valid/invalid is selected by "[Pr.82] Forced stop valid/invalid
selection".
The details shown below explain about the "forced stop function".
[1] Control details
[2] Wiring the forced stop
[3] Setting the forced stop
[4] How to check the forced stop
[5] Precautions during control
[1] Control details
When the "[Pr.82] Forced stop valid/invalid selection" is set to other than "1:
Invalid", the forced stop signal is sent to all axes after the forced stop input signal
is turned on. Refer to the servo amplifier instruction manual for the operation of
the servo amplifier after the forced stop signal is sent.
The outline of the forced stop process is shown below.
Stop cause
Stop
axis
M code
ON
signal
after stop
Axis
operation
status
([Md.26])
after
stopping
Stop process
HPR control
Major
positioning
control
High-level
positioning
control
Manual control
Machine
HPR
control
Fast HPR
control
JOG/
Inching
operation
Manual
pulse
generator
operation
Forced stop
"Forced stop input
signal" OFF from
an external device
All axes
No
change
Servo OFF
Immediate stop