Omron G9SX Series - Page 17

G9SX
17
Application Examples
Note: The above PL is only the evaluation result of the example. The PL must be evaluated in an actual application by the customer after confirming the usage conditions.
● Application Overview 1
1. When the emergency stop switch S1 is pressed.
• The power supply to the motor M1 and M2 is turned OFF immediately when the emergency stop switch S1 is pressed.
• The power supply to the motor M1 is kept OFF until the emergency stop switch S1 is released and the reset switch S2 is pressed.
• The power supply to the motor M2 is kept OFF until the guard is closed and the reset switch S2 and S5 are pressed while the emergency stop
switch S1 is released.
2. When the guard is opened (the emergency stop switch S1 is released).
•
The power supply to the motor M2 is turned OFF immediately when the S3 and S4 detect that the guard is opened. (The power supply to the motor M1
is kept ON.)
• The power supply to the motor M2 is kept OFF until the guard is closed and the reset switch S5 is pressed.
Highest achievable PL/
safety category
Model Stop category Reset
PLe/4 equivalent
Emergency Stop Switch A165E/A22
Flexible Safety Unit G9SX-BC202
Safety Limit Switch D4B-N/D4N/D4F
Flexible Safety Unit G9SX-AD322-T15
M1, M2: 0
Emergency Stop: Manual
Guard: Manual
S14 A2 S24 S34 S44 S54 L1 X1 X2
T11
A1
T12 T21 T22 T31 T32 T33
Y1
T41 T42
S14
A2
S24
L1 L2 X1 X2
T11
A1
T12 T21 T22 T31 T32 T33
Y1
KM2
KM1
S2
+24V
M1
KM2
KM1
PLC etc.
S1
+24+24V V
+24V
M2
KM4
KM3
OFF
AND
PLC etc.
Open
Open
open
S4
S5
S3
Feedback Loop
Emergency
Stop Switch
Guard
Feedback Loop
G9SX-AD322-T15 (Unit 2)
Control circuit
G9SX-BC202
(Unit 1)
Control circuit
KM4
KM3
KM1 KM2
KM3 KM4
Timing chart 1
G9SX-BC202 (Unit 1)
Reset switch S2
Emergency stop switch S1
KM1, KM2 N.O. contact
Unit 1 S14, S24
Unit 1
Logical AND output L1
Unit 2
Logical AND input T41
Safety limit switch S3
Limit switch S4
KM3, KM4 N.O. contact
Unit 2 S14, S24
Reset switch S5
G9SX-AD322-T15 (Unit 2)
(2)
(1) Guard opened: Only the Unit 2 stops.
(2) Emergency stop switch pressed: Both the Unit 1 and 2 stop.
S1: Emergency Stop Switch
S2, S5: Reset Switch
S3: Safety Limit Switch
S4: Limit Switch
KM1 to KM6: Magnetic contactor
M1 to M2: Motor
Note: In this example, press reset switch S2, confirm that Unit 1
has started operating, and then press reset switch S5.