Category 2 - Omron SCARA YRC Series Supporting Supplement Manual

3.2.3

Category 2

A safety circuit configuration example of category 2 is shown below.
Category 2 safety circuit example
L1
AC IN
N1
Reset switch
S1
AUTO SERVICE
Maintenance switch
Input 1
S2 Input 2
Input 3
Door switch
S3
Input 1
External emergency stop
S4
Input 1
SAFETY
PB emergency stop
Input 1
Input 2
PB enable
Input 1
Input 2
+24V
GND
*1: Wiring to check whether the controller is normal when using an alarm to shut o the main power
Parts list
Circuit No.
S1 Reset switch
S2 Key selector switch
S3 Safety door switch
S4 Emergency stop switch
KM1 Contactor (mirror contact)
Safety relay
KA1, 2
Socket for safety relay
SRL1 Safety relay unit
SRL2 Safety relay unit
+24V
Service 1
Service 2
SRL1
L2 L1
M1
M1 M2 OUT
M2
ON OFF B
A
+24V OFF ON
T11
T12
T21
A
T22
Y1
T61
T62
Enable 11
T71
B
T72
Y2
T41 T42
+24V
SRL2
L1 A2 T31 T32
T11
T12
T21
T22
Y1
+24V
+24V
Enable 11
+24V
GND
Part name
KM1
GND
+24V
T31
T32
T33
KA1
S14
S24
S44
S54
KA2
GND
+24V
Service 1
Service 2
T33
S14
S24
Type No.
A22 series OMRON
A22 TK series OMRON
D4 series OMRON
A22E series OMRON
LC1-D18 Schneider Electric
G7SA-3A1B OMRON
P7SA-10F-ND OMRON
G9SX-GS226 OMRON
G9SX-BC202 OMRON
L
AC OUT
N
SAFETY
E-STOP24V
E-STOPRDY
*1
MPRDY
N.COM
SERVICE(DI02)
P.COM
OUT
PB emergency stop
Output 1
PB enable
Output 1
Manufacturer
2-19
2