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3.2.2
A safety circuit configuration example of category 3 is shown below.
2
S1
S2
S3
External emergency stop
S4
PB emergency stop
Parts list
Circuit No.
S1
S2
S3
S4
KM1, 2
KA1 to 5
SRL1
SRL2
SRL3
2-18
Category 3
Category 3 safety circuit example
L1
AC IN
N1
Reset switch
AUTO SERVICE
Maintenance switch
+24V
Service 1
Input 1
Service 2
Input 2
Input 3
Door switch
Input 1
Input 2
Enable 11
Enable 12
Enable 21
Enable 22
Input 1
Input 2
SAFETY
Input 1
Input 2
PB enable
Input 1
Input 2
+24V
+24V
GND
GND
*1: Wiring to check whether the controller is normal when using an alarm to shut o the main power
Part name
Reset switch
Key selector switch
Safety door switch
Emergency stop switch
Contactor (mirror contact)
Safety relay
Socket for safety relay
Safety relay unit
Safety relay unit
Safety relay unit
SRL1
L2
L1
M1
M1
M2
OUT
M2
ON
OFF
B
OFF
ON
A
+24V
T31
T32
T11
T33
T12
T21
A
S14
T22
S24
Y1
S44
T61
S54
T62
T71
B
T72
Y2
T41
T42
+24V
SRL2
L1 A2 T31 T32 T33
T11
T12
T21
S14
T22
S24
Y1
SRL3
T31 T32
T11
13
T12
14
T21
23
T22
24
T23
33
Enable
34
A
Enable
B
43
Enable
44
Enable
Type No.
A22 series
A22 TK series
D4 series
A22E series
LC1-D18
G7SA-3A1B
P7SA-10F-ND
G9SX-GS226
G9SX-BC202
G9SA-501
KM1
KM2
GND
GND
KA1
KA2
KA3
GND
GND
Service 1
Service 2
KA4
KA5
GND
GND
11
12
21
22
Manufacturer
OMRON
OMRON
OMRON
OMRON
Schneider Electric
OMRON
OMRON
OMRON
OMRON
OMRON
L
AC OUT
N
SAFETY
E-STOP24V
E-STOPRDY
*1
MPRDY
N.COM
SERVICE(DI02)
P.COM
OUT
PB emergency stop
Output 1
Output 2
PB enable
Output 1
Output 2
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