Datasheet
NX series I/O 29
Current output unit
Item Specifications
Model NX-DA2203 NX-DA3203 NX-DA2205 NX-DA3205
Name Current output unit
Output range 4 to 20 mA
Capacity 2 points 4 points 2 points 4 points
Output conversion range –5% to 105% (full scale)
Allowable load
resistance
600 min. 350 min. 600 min. 350 min.
Resolution 1/8,000 (full scale) 1/30,000 (full scale)
Overall
accuracy
25°C ±0.3% (full scale) ±0.1% (full scale)
0 to 55°C ±0.6% (full scale) ±0.3% (full scale)
Conversion time 250 s/point 10 s/point
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 Between the input and the NX bus: Power = Transformer, Signal = Digital isolator (no isolation between inputs)
Unit power consumption 1.75 W max. 1.80 W max. 1.75 W max. 1.80 W max.
I/O power supply method Supply from the NX bus
I/O current consumption No consumption
Current capacity of I/O
power supply terminal
0.1 A/terminal max.
I/O refreshing method Free-run refreshing Switching synchronous I/O refreshing and free-run refreshing
Terminal block type Screwless push-in terminal
8 terminals (A + B)
Screwless push-in terminal
12 terminals (A + B)
Screwless push-in terminal
8 terminals (A + B)
Screwless push-in terminal
12 terminals (A + B)
Dimensions (W x H x D) 12 × 100 × 71 mm
Weight 70 g max.
Current output +
Current output
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
I1+
IOG
IOV
IOV
A1 B1
A8 B8
IOG
I2+
IOG
IOV
IOV
IOG
A1 B1
A8 B8
I3+I4+
24 VDC
NX-DA3203/DA3205
Current output +
Current output
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
I1+
IOV
IOG
A1 B1
A8 B8
NC
I2+
IOV
IOG
NC
A1 B1
A8 B8
24 VDC
IOV
AG
IOG
AMP
Output I1+ to I2+
Terminal block
I/O power supply +
I/O power supply
I/O power supply +
I/O power supply
AG: Analog circuit internal GND
Terminal wiring
NX-DA2203/DA2205
Circuit layout
NX-DA2203/DA2205
NX-DA3203/DA3205
IOV
AG
IOG
AMP
Output I1+ to I4+
Terminal block
I/O power supply +
I/O power supply
I/O power supply +
I/O power supply
AG: Analog circuit internal GND
NX bus
connector
(left)
NX bus
connector
(right)
NX bus
connector
(left)
NX bus
connector
(right)
Additional I/O
power supply unit
Current output unit
NX-DA220
@
Additional I/O
power supply unit
Current output unit
NX-DA320
@