Omron NE1A Series Manual page 232

A-1-3 Safety Gate Application: Dual Channel Door Switches with
Automatic Reset and Dual Channel Emergency Stop Switch with
Manual Reset
Wiring Example
Open
S3
S1
11 21
S2
12 22
(1) Connect a 24-VDC power supply to terminals V0 and G0 (power supply terminals for internal cir-
Note
cuits).
(2) This example shows the NE1A-SCPU01(-V1) Controller's terminal layout.
Timing Diagram
ESTOP
S1
RESET
S2
Safety Limit
Switch S3
Limit Switch
S4
Safety Limit
Switch S5
Limit Switch
S6
KM1,2
EDM
Feedback
KM3,4
EDM
Feedback
Idle to RUN
Open
S4
I4
I0 I2 I6
I1 I3 I5 I7
G1 T0 T2
V1
E1
V2 G2 T1 T3
KM1
350 ms min.
Safety gate open
T T T
EDM EDM EDM
T
EDM
T : EDM feedback time
EDM
E1 and E2: 24-VDC power supply
S1: Emergency stop pushbutton
S2: Reset Switch
S3 and S5:Safety limit switch
S5
S4 and S6: Limit switch
KM1, KM2, KM3, and KM4: Contactors
S6
I8 I12
I10 I14
KM3-NC
I9 I11 I13 I15
KM1-NC
KM4-NC
O0 O2 O4 O6
KM2-NC
O1 O3 O5 O7
KM2 KM3 KM4
Emergency stop button (ESTOP) pressed.
Safety gate open
T T
EDM EDM
Appendix A
KM1
KM2
M
KM3
KM4
M
T
EDM
T
EDM
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