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G9SP
Application Templates
Emergency Stop Pushbutton Application
Application Overview
The power supply to motor M is turned OFF when emergency stop switch S1 is pressed.
Wiring Example
Program
PL/Safety Category
Model
Stop category
Reset
PLe/4 equivalent
Emergency stop pushbutton
A165E/A22E
0
Manual
E1 and E2:
24-VDC power supplies
S1:
Emergency stop switch
S2:
Reset switch
KM1 and KM2: Contactors
M:
Motor
Note:
Refer to page 20 for the terminal arrangement.
Timing Chart
KM1
KM2
EDM
feed
b
ack
E-STOP p
u
shed
More than
350 ms
E-STOP S1
11-12
Reset O
N
E-STOP S1
21-22
Reset S2
More than
350 ms
E-STOP released
Discrepancy error
Discrepancy
error released
EDM error released
EDM error
More than
350 ms
Safety I/O Terminal Settings
Input Terminals
Output Terminals
Precautions for Safe Use
• Perform a function test every six months to
detect contact welding failures on contactors.
• It is the user's responsibility to make sure that
the entire system complies with standards.
• For safety reasons, two electrical switching
elements and two relays or contactors are
always necessary to detect electrical faults and
mechanical faults.
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