Omron NX-ID - Page 320

Appendices
A - 70
NX-series Digital I/O Unit User’s Manual (W521)
Unit name Transistor Output Unit Model NX-OD6121-5
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, output indicator Internal I/O common NPN
Rated voltage 12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/common, 4 A/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 0.1 ms max./0.8 ms max.
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
• Connected to a CPU Unit
1.00 W max.
• Connected to a Communications Cou-
pler Unit
0.80 W max.
Current consumption
from I/O power supply
50 mA max.
Weight 90 g max.
Circuit layout
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: No restrictions
OUT0
to OUT15
COM0
+V0
OUT16
to OUT31
COM1
+V1
+V0
COM0
+V1
COM1
I/O power
supply +
NX bus
connector
(left)
I/O power
supply −
NX bus
connector
(right)
I/O power
supply +
I/O power
supply −
Internal circuits
Connector