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Appendices
NX-series Digital I/O Unit User’s Manual (W521)
A-1 Data Sheet
A
A-1-3 Digital Output Units
Circuit layout
Installation orienta-
tion and restrictions
Installation orientation:
• Connected to a CPU Unit
Possible in upright installation.
• Connected to a Communications Coupler Unit
Possible in 6 orientations.
Restrictions: No restrictions
Terminal connection
diagram
Disconnec-
tion/Short-circuit
detection
Not supported.
Protective function Not supported.
*1. Electrical service life will vary depending on the current value. Refer to Precautions when Using the Relay Output Units on page 7-20
for details.
0 to 1
C0 to C1
You cannot replace the relay.
Terminal block
Internal circuits
Internal power
supply
NX bus
connector
(left)
I/O power supply +
I/O power supply −
I/O power supply +
I/O power supply −
NX bus
connector
(right)
Relay Output
Unit
NX-OC2633
Load
Load
0
1
A1 B1
A8 B8
C0
C1
NCNC
NC NC
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