Datasheet

NX series I/O 19
Digital output unit (with Fujitsu connector)
Item Specifications
Model NX-OD6121-6
Name Transistor output unit
Internal I/O common NPN
Capacity 32 points
Rated voltage 12 to 24 VDC
Operating load voltage 10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/common, 4 A/NX unit
Maximum inrush current 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.
Dielectric strength 510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.
Insulation resistance 20 M min. between isolated circuits (at 100 VDC)
Isolation method Photocoupler isolation
Unit power consumption 0.80 W max.
I/O power supply method Supply from external source
I/O current consumption 50 mA max.
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
I/O refreshing method Switching synchronous I/O refreshing and free-run refreshing
Terminal block type Fujitsu connector
40 terminals
Dimensions (W x H x D) 30 × 100 × 71 mm
Weight 90 g max.
Disconnection/
short-circuit detection
Not supported
Protective function Not supported
Terminal wiring
Circuit layout
NX-OD6121-6
OUT0
to OUT15
COM0
+V0
OUT16
to OUT31
COM1
+V1
+V0
COM0
+V1
COM1
Internal circuits
Connector
NX-OD6121-6
A1
A3
A5
A2
A4
A6
A8
A9
A10
A7
OUT0
OUT2
OUT4
OUT1
OUT3
OUT5
OUT7
COM0
+V0
OUT6
A11
A13
A15
A12
A14
A16
A18
A19
A20
A17
B1
B3
B5
B2
B4
B6
B8
B9
B10
B7
B11
B13
B15
B12
B14
B16
B18
B19
B20
B17
OUT16
OUT18
OUT20
OUT17
OUT19
OUT21
OUT23
COM1
+V1
OUT22
12 to 24 VDC12 to 24 VDC
OUT8
OUT10
OUT12
OUT9
OUT11
OUT13
OUT15
COM0
+V0
OUT14
OUT24
OUT26
OUT28
OUT25
OUT27
OUT29
OUT31
COM1
+V1
OUT30
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NX bus
connector
(left)
NX bus
connector
(right)
I/O power
supply +
I/O power
supply –
I/O power
supply +
I/O power
supply –
Signal
name
Signal
name
Connector
pin
• Be sure to wire both pins A9 and A19 (COM0).
• Be sure to wire both pins B9 and B19 (COM1).
• Be sure to wire both pins A10 and A20 (+V0).
• Be sure to wire both pins B10 and B20 (+V1).