Mitsubishi MELSEC-Q QD77MS, 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 QD77MS 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.
By the QD77MS external input signal connector is connected forced stop input, this
function is available for all axes of servo amplifier. (The initial value is "0: Valid".)
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
A warning "controller forced stop warning (warning code: 2147)" will occur if
turned on the forced stop input signal when the "
Pr.82
Forced stop valid/invalid
selection" is set "0: Valid". And then it is available for all axes of servo amplifier.
The outline of the forced stop process is shown below.
Stop process
OPR control Manual control
Stop cause
Stop
axis
M code
ON
signal
after stop
Axis
operation
status
(
Md.26
)
after
stopping
Machine
OPR
control
Fast OPR
control
Major
positioning
control
High-level
positioning
control
JOG/
Inching
operation
Manual
pulse
generator
operation
Forced stop
"Forced stop input
signal" OFF
All axes
No
change
Servo OFF
Servo OFF or free run (The operation stops with dynamic
brake)