3 Part Names and Functions
3 - 2
NX-series Safety Control Unit User’s Manual (Z930)
3-1 Safety CPU Unit
This section gives the names of the parts of the Safety CPU Unit and describes the meanings of the
operation indicators.
NX-SL3300 or NX-SL3500
3-1-1 Parts and Names
Letter Name Function
A Marker attachment
locations
The locations where markers are attached. The markers made by OMRON
are installed for the factory setting. Commercially available markers can
also be installed. For details, refer to 5-1-2 Attaching Markers on page 5-4.
B Protrusions for
removing the Unit
The protrusions to hold when removing the Unit.
C DIN Track mounting
hooks
These hooks are used to mount the NX Unit to a DIN Track.
D NX bus connector This is the NX-series bus connector. It is used to connect an NX-series
Safety I/O Unit or other NX Unit.
E Unit hookup guides These guides are used to connect two Units.
F Indicators The indicators show the current operating status of the NX Unit or signal I/O
status. Refer to 3-1-2 Indicators on page 3-3. The number of indicators
depends on the NX Unit.
G Unit specifications The specifications of the NX Unit are given here.
(D)
(D)
(E)
(C)
(G)
(F)
(E)
(A)
(C)
(C)
(B)
(E)
(B)
(B)
(E)