Datasheet

NX series I/O 21
0
1
NC
A1B1
A8B8
NC
C0
C1
NC
NC
Load
Load
Terminal wiring
NX-OC2633
Circuit layout
NX-OC2633
0 to 1
C0 to C1
You cannot replace the relay.
Terminal block
I/O power supply +
I/O power supply 
I/O power supply +
I/O power supply 
Internal circuits
NX bus
connector
(left)
NX bus
connector
(right)
Internal power
supply
Relay output unit
NX-OC2633
NX-OC2733 NX-OC2733
Internal circuits
Internal power
supply
I/O power supply +
I/O power supply 
NX bus
connector
(left)
Terminal block
NO0 to NO1
C0 to C1
NC0 to NC1
I/O power supply +
I/O power supply 
NO0 and NO1 are normal open contacts, and NC0 and NC1 are normal close contacts.
You cannot replace the relay.
NX bus
connector
(right)
NO0
C0
NO1
A1B1
A8B8
C1
NC0
C0
NC1
C1
Load Load
Relay output unit
NX-OC2733
NX-OC4633 NX-OC4633
0 to 7
C0 to C7
You cannot replace the relay.
Terminal block
Internal circuits
Internal power
supply
I/O power supply +
I/O power supply −
I/O power supply +
I/O power supply −
NX bus
connector
(right)
NX bus
connector
(left)
Load
0
1
2
A1B1
A8B8
3
C0
C1
C2
C3
4
5
6
C1D1
C8D8
7
C4
C5
C6
C7
Load
Relay output unit
NX-OC4633