Omron NX-IA3117, User Manual

Page: 258 / 342

Appendices
A - 28 NX-series Digital I/O Unit User’s Manual (W521)
Unit name Transistor Output Unit Model NX-OD2258
Number of points 2 points External connection
terminals Screwless clamping terminal block (8 ter-
minals)
I/O refreshing method Output refreshing with specified time stamp
Indicators TS indicator, output indicator Internal I/O common PNP
Rated voltage 24 VDC
Operating load voltage
range 15 to 28.8 VDC
Maximum value of load
current 0.5 A/point, 1 A/NX Unit
Maximum inrush cur-
rent 4.0 A/point, 10 ms max.
Leakage current 0.1 mA max.
Residual voltage 1.5 V max.
ON/OFF response time 300 ns max./300 ns max.
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: 0.5 A/terminal max., IOG: 0.5 A/termi-
nal max.
NX Unit power con-
sumption 0.50 W max. Current consumption
from I/O power supply 40 mA max.
Weight 70 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 With load short-circuit protection.
OUT0 to OUT1
This unit uses a push-pull output circuit.
IOV0 to 1
IOG0 to 1
Terminal block
Internal circuits Isolation circuit
Drive circuit
NX bus
connector
(left)
I/O power
I/O power supply
−
I/O power
I/O power supply
−
NX bus
connector
(right)
Two-wire type
Three-wire type
24 VDC
Transistor Output
Unit
NX-OD2258
Additional I/O
Power Supply Unit
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
A1 B1
A8 B8
A1 B1
A8 B8
OUT1
IOV
IOG
NC
OUT0
IOV
IOG
NC