A - 27
Appendices
NX-series Digital I/O Unit User’s Manual (W521)
A-1 Data Sheet
A
A-1-2 Digital Input Units
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: As shown in the following.
Terminal connection
diagram
Disconnec-
tion/Short-circuit
detection
Not supported.
Protective function Not supported.
0
60504030201005545
6050403020100
16
8
4
0
12
5545
16
8
4
12
Number of simultaneously ON input points vs.
Ambient temperature characteristic
Number of simultaneously ON input points vs.
Ambient temperature characteristic
16 points at 45°C
16 points at 45°C
12 points at 55°C
16 points at 40°C
7 points at 55°C
12 points at 55°C
Ambient temperature
Ambient temperature
• For upright installation
• For any installation other than upright
28.8 V
I/O power supply voltage
Number of simultaneously ON input points
Number of simultaneously ON input points
I/O power supply voltage
24 V
28.8 V
(°C)
(°C)
A0
AB
A2
A4
A1
A3
A5
A7
A8
A6
B0
B2
B4
B1
B3
B5
B7
B8
B6
IN2
IN6
IN0
IN4
IN8
IN12
IN14
COM
IN10
Terminal
Signal Name Signal Name
24 VDC
IN3
IN7
IN1
IN5
IN9
IN13
IN15
COM
IN11
• The polarity of the input power supply can be connected in either direction.
• Terminal numbers in the terminal connection diagram are used in this
manual, but they are not printed on all Units.
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