Omron NE1A-SCPU01 - 07-2009 - Page 309

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Appendix A
A-1-5 Safety Mat Application
Wiring Example
Note (1) Connect a 24-VDC power supply to terminals V0 and G0 (power supply terminals for internal
circuits).
(2) This example shows the NE1A-SCPU01(-V1)(-EIP) Controller’s terminal layout.
Timing Diagram
Safety
category
Safety detection
device
Stop category Reset method
Equivalent to 3 • Safety mat
• Emergency stop
pushbutton
0Manual
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
G2a
O3 O5
O2 O4 O6
O7
M
KM1
KM2
KM1-NC
KM2-NC
KM1 KM2
E1
E2
Black
Black
White
White
Auto reset
S1
S2
E1 and E2: 24-VDC power supply
S1: Reset switch
S2: Emergency stop pushbutton
KM1 and KM2: Contactors
M: Motor
ESTOP
S2
RESET
S1
MAT
KM1,2
EDM
Feedback
Emergency stop button (ESTOP) pressed.
350 ms min.
350 ms min.
T
EDM
T
EDM
T
EDM
T
EDM
Idle to RUN TEDM: Maximum feedback time