Omron NX-EC0112, User Manual

Page: 142 / 468

6 Incremental Encoder Input Units
6 - 16 NX-series Position Interface Units User’s Manual (W524)
The following diagram shows the internal power supply wiring.
Note 1. The I/O power is supplied from the I/O power supply connected to the I/O power supply terminals on the
Communications Coupler Unit or an Additional I/O Power Supply Unit.
2. The power supply output for encoders (5 V) is converted from the 24-VDC I/O power supply to 5 VDC
inside the Incremental Encoder Input Unit.
The following is a wiring example.
Note 1. The external inputs for the Units with line receiver inputs are NPN connections.
2. To supply power to connected external devices, connect an 24-VDC I/O power supply to the Communi-
cations Coupler Unit or an Additional I/O Power Supply Unit to supply power to the Incremental Encoder
Input Unit.
3. The power supply output for encoders (5 V) is converted from the 24-VDC I/O power supply to 5 VDC
inside the Incremental Encoder Input Unit.
Internal Power Supply Wiring Diagram
Wiring Example
24 V
0 V
I0
IOV
IOG
I2
IOV
IOG
I1
IOV
IOG
NC
NC
NC
A+
A-
Z+
Z-
NC
NC
B+
B-
5V
0V
NC
NC
Terminal block
NX bus connector
Incremental Encoder Input Unit
I0
IOV
IOG
I2
IOV
IOG
I1
IOV
IOG
NC
NC
NC
A+
A-
Z+
Z-
NC
NC
B+
B-
5V
0V
NC
NC
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
I/O power
supply (24 VDC)
Additional I/O
Power Supply Unit
Incremental Encoder Input Unit
Sensor 1
Sensor 2
Sensor 3
Encoder