Omron NX-IA3117, User Manual

Page: 270 / 342

Appendices
A - 40 NX-series Digital I/O Unit User’s Manual (W521)
Unit name Transistor Output Unit Model NX-OD5256-5
Number of points 16 points External connection
terminals MIL connector (20 terminals)
I/O refreshing method Switching Synchronous I/O refreshing and Free-Run refreshing
Indicators TS indicator, output indicator Internal I/O common PNP
Rated voltage 24 VDC
Operating load voltage
range 20.4 to 28.8 VDC
Maximum value of load
current 0.5 A/point, 2 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 0.5 ms max./1.0 ms max.
Dimensions 30 (W) x 100 (H) x 71 (D) Isolation method Photocoupler 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 Supplied from external source. Current capacity of I/O
power supply terminal Without I/O power supply terminals
NX Unit power con-
sumption 0.70 W max. Current consumption
from I/O power supply 40 mA max.
Weight 85 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 OUT15
0V
COM (+V)
COM (+V)
0V
I/O power
NX bus
connector
(left)
I/O power
supply
−
NX bus
connector
(right)
I/O power
I/O power
supply
−
Connector
Internal circuits
Short-circuit protection
1
5
9
3
7
11
15
17
19
13
COM (+V)
OUT15
OUT13
0V
OUT14
OUT12
OUT10
OUT09
OUT08
OUT11
2
6
10
4
8
12
16
18
20
14
24 VDC
COM (+V)
OUT07
OUT05
0V
OUT06
OUT04
OUT02
OUT01
OUT00
OUT03
L L
L L
L L
L L
L L
L L
L L
L L
Connector
pin
Signal
name
Signal
name
• Be sure to wire both pins 1 and 2 (COM (+V)).
• Be sure to wire both pins 3 and 4 (0V).