A - 19
Appendices
NX-series Digital I/O Unit User’s Manual (W521)
A-1 Data Sheet
A
A-1-2 Digital Input Units
Unit name
DC Input Unit
Model
NX-ID6142-5
Number of points
32 points
External connection
terminals
MIL connector (40 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
Indicators
TS indicator, input indicators
Internal I/O common
For both NPN/PNP
Rated input voltage
24 VDC (19 to 28.8 VDC)
Input current
4.1 mA typical (24 VDC)
ON voltage/ON current
19 VDC min./3 mA min. (between COM
and each signal)
OFF voltage/OFF cur-
rent
5 VDC max./1 mA max. (between COM
and each signal)
ON/OFF response time
20 μs max./400 μs max.
Input filter time
No filter, 0.25 ms, 0.5 ms, 1 ms (default), 2
ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms, 128
ms, 256 ms
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power con-
sumption
0.60 W max.
Current consumption
from I/O power supply
No consumption
Weight
90 g max.
Circuit layout
IN0
to
IN15
COM0
COM0
COM1
COM1
Input indicator
3.3 kΩ
3.3 kΩ
Connector
I/O power
supply +
NX bus
connector
(left)
I/O power
supply −
IN16
to
IN31
NX bus
connector
(right)
I/O power
supply +
I/O power
supply −
Internal circuits
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