Omron NX-SL5500

Precautions for Correct Use
• The maximum number of connections per Unit is as follows:
NX-SIH400: 20 (10 connected in series × 2 series)
• Y
ou can connect up to 10 Non-contact Door Switches to each test output terminal.
• You cannot branch the connections to more than one Non-contact Door Switch from the
same test output terminal.
Non-contact Door Switches
24 VDC
0 V
White
Black
Blue
Brown
White
Black
Blue
Brown
NX bus connection
IOV IOV
IOG IOG
T0
Si0
Si1
Si3
Si2
NX-SIo
The unit that supplies the I/O
power to the NX bus
• The total wiring length (L1 + L2 +…+ Ln+2 in the figure above) for the D40A or D40Z Non-
contact Switches is 100 m max.
•
The D40A Non-contact Door Switch can be used in a Safety Category 3 or lower or a PLd or
lower application. It cannot be used in a Safety Category 4 or PLe application.
•
The D40Z Non-contact Door Switch can be used in a Safety Category 4 or lower or a PLe or
lower application.
l
UM/UMA Safety Mats
OMRON UM/UMA Safety Mats are connected as shown in the following figure.
Safety mat
n pcs (n=12 max.)
Blue
White
Brown
Black Blue
White
Brown
Black
T0
NX-SIH400
T1
Si0
Si1
L
n + 1
L
1
L
2
L
n
L
3
Example of Sysmac Studio Settings:
4 Safety Control Unit Operation
4 - 19
NX-series Safety Control Unit User's Manual (Z930)
4-3 Safety I/O Function
4
4-3-1 Safety Input Function