Refer to Precaution for Conformance to ISO 13856-1:2013 on page 8 - 4 for precautions on con-
formance to ISO 13856-1:2013.
Precautions for Correct Use
• The maximum number of connections per Unit is as follows:
NX-SIH400: 12 (12 connected in series × 1 series)
• Y
ou can connect up to 12 Safety Mats to the two test output terminals.
• You cannot branch the connections to more than one Safety Mat or Safety Edge from the
same test output terminal.
Black
WhiteBrown
Blue
Black
WhiteBrown
Blue
Si0
Si1
T0
NX-SIH400
T1
Si3
Si2
Safety mat
• The total wiring length (L1 + L2 +…+ Ln+1) for the UM/UMA Safety Mats is 100 m max.
• The UM/UMA Safety Mats can be used in a Safety Category 3 or lower or a PLd or lower
application. They cannot be used in a Safety Category 4 or PLe application.
l
SGE Safety Edges
OMRON SGE Safety Edges are connected as shown in the following figure.
4 Safety Control Unit Operation
4 - 20
NX-series Safety Control Unit User's Manual (Z930)