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