Omron G9SP Series Manual page 12

G9SP
Safety Light Curtain Application
PL/Safety Category
PLe/4 equivalent
Application Overview
The power supply to the motor is turned OFF when light is intercepted in the safety light curtain and the safety
limit switch turns OFF simultaneously.
The output also goes OFF when emergency switch S1 is pressed.
Wiring Example
Timing Chart
S3 detects the
robot arm.
S2 detects a
human body.
Hazard
approaches.
Reset ON
E-Stop S1
Safety light curtain
S2
Safety Limit Switch
S3
More than
350 ms
Reset S4
KM1, KM2
EDM feedback
Idle → Run
Program
12
Model
• Emergency stop pushbutton
• Safety light curtain
• Safety Limit Switch
S2 detects a human body and S3
detects the robot arm.
E-Stop pressed
Hazard (e.g., robot arm) is
E-Stop released
interrupting light to S3 and stopped.
More than
350 ms
Stop category
A165E/A22E
F3SJ-E@@@@P25
D4N/D4F
E1 and E2:
S1:
S2:
S3:
S4:
KM1 and KM2: Contactors
M:
Note: Refer to page 20 for the terminal arrangement.
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.
Reset
0 Manual
S1
S2
S3
24-VDC power supplies
Emergency stop switch
Safety light curtain
Safety limit Switch
Reset switch
Motor
Light curtain
Light curtain
Limit Switch
Limit Switch
S4