| Common Specifications |
| • Field Power |
| Rated Voltage |
11 to 28.8 VDC, 24 VDC typical |
| Current in Field Power Contact |
Max. 10 A |
| • Isolation |
| System Power to I/O Driver |
Optical isolation |
| • Physical Characteristics |
| Dimensions |
45 x 99 x 70 mm (1.77 x 3.90 x 2.76 in) |
| Weight |
150 g |
| Mounting |
DIN rail |
| • Environmental Limits |
| Operating Temperature |
-10 to 60°C (14 to 140°F) |
| Storage Temperature |
-40 to 85°C (-40 to 185°F) |
| Ambient Relative Humidity |
5 to 95% (non-condensing) |
| Altitude |
Up to 2000 m |
| Note |
Please contact Moxa if you require products guaranteed to function properly at higher altitudes. |
| • Standards and Certifications |
| Safety |
UL 508 |
| EMI |
61000-3-2; EN 61000-3-3; EN 61000-6-4; FCC Part 15, Subpart B, Class A |
| EMS |
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5,
EN 61000-4-6, EN 61000-4-8, EN 61000-4-11, EN 61000-6-2 |
| Vibration |
IEC-68-2-6 (2 g's during operation) |
| • Warranty |
| Warranty Period |
2 years |
| Details |
See www.moxa.com/warranty |
| NA-4020/4021 Specifications |
| • Serial Communication Parameters |
| Parity |
None, Even, Odd |
| Data Bits |
7, 8 |
| Stop Bits |
1, 2 |
| Baudrate |
1200 to 115200 bps |
| Signals |
• NA-4020: Data+, Data-, Gnd, DIR (5-contact terminal block)
• NA-4021: TxD, RxD, Gnd (9-pin D-Sub female) |
| • Software Features |
| Protocols |
Modbus/RTU, Modbus/ASCII |
| Modbus Address |
00 to 99 (set by rotary switches) |
| Programming Library |
MXIO DLL library for Windows; Supports Visual Basic, Visual C++, Borland C++ Builder, .net, VB/VC.NET |
| Number of I/O Modules Supported |
Max. of 32 |
| • Power Requirements |
| Power Input |
11 to 28.8 VDC, 24 VDC typical |
| Power Consumption |
70 mA @ 24 VDC |
| Current for I/O Modules |
Max. 1.5 A @ 5 VDC |
| • MTBF (mean time between failure) |
| Time |
NA-4020: 4,695,360 hrs
NA-4021: 4,721,640 hrs |
| Database |
Telcordia (Bellcore) |
