Omron NX-IA3117, User Manual

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Appendices
A - 12 NX-series Digital I/O Unit User’s Manual (W521)
Unit name DC Input Unit Model NX-ID3444
Number of points 4 points External connection
terminals Screwless clamping terminal block (12 ter-
minals)
I/O refreshing method Input refreshing with input changed time
Indicators TS indicator, input indicators Internal I/O common PNP
Rated input voltage 24 VDC (15 to 28.8 VDC)
Input current 3.5 mA typical (at 24 VDC), rated current
ON voltage/ON current 15 VDC min./3 mA min. (between IOG and
each signal)
OFF voltage/OFF cur-
rent 5 VDC max./1 mA max. (between IOG and
each signal)
ON/OFF response time 100 ns max./100 ns max.
Input filter time No filter
Dimensions 12 (W) x 100 (H) x 71 (D) Isolation method Digital isolator isolation
Insulation resistance 20 M Ω 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 the NX bus Current capacity of I/O
power supply terminal
IOV
:
0.1 A/terminal max., IOG
:
0.1 A/termi-
nal max.
NX Unit power con-
sumption 0.55 W max. Current consumption
from I/O power supply 30 mA max.
Weight 65 g max.
Circuit layout
Installation orienta-
tion and restrictions Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Terminal connection
diagram
Disconnec-
tion/Short-circuit
detection Not supported. Protective function Not supported.
IOV0 to 3
IN0 to IN3
IOG0 to 3
Terminal block
Internal circuits
Isolation circuit
Current control
circuit
Power
supply
NX bus
connector
(left)
I/O power
I/O power supply
−
I/O power
I/O power supply
−
NX bus
connector
(right)
Two-wire
sensor
Three-wire
sensor
24 VDC
DC Input Unit
NX-ID3444
Additional I/O
Power Supply Unit
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
IN0
IOG0
IOV2
IOV0
A1 B1
A8 B8
IN2
IOG2
IN1
IOG1
IOV3
IOV1
IN3
IOG3
A1 B1
A8 B8