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8 CONTROL SUB FUNCTIONS
8.4 Functions to Limit the Control
Forced stop function
"Forced stop function" stops all axes of the servo amplifier with the forced stop input connected to the external input
connection connector of the Simple Motion module. (The initial value is "0: Valid".)
The forced stop input valid/invalid is selected by "[Pr.82] Forced stop valid/invalid selection".
Control details
The servo warning "Controller forced stop warning" (warning No.: E7) 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.
The following drawing shows the operation of the forced stop function.
■RD77MS4 operation example
WARNING
• 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.
Stop cause Stop
axis
M code
ON
signal
after stop
Axis
operation
status
([Md.26])
after
stopping
Stop process
Home position
return control
Major
positioning
control
High-level
positioning
control
Manual control
Machine
home
position
return
control
Fast
home
position
return
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)
Each operation
PLC READY signal [Y0]
All axis servo ON [Y1]
Positioning start signal [Y10]
Forced stop input
10
0
Forced stop valid
ON
01
OFF
1
ON ON
[Md.50] Forced stop input
[Md.108] Servo status1
[Pr.82] Forced stop valid/
invalid selection
(b1: Servo ON)
(Input voltage of EMI)
Forced stop causes
occurrence
Forced stop causes
occurrence
OFF
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