Specifications

Industrial Networking Solutions
5-31
[e-mail]
www.moxa.com
5
Industrial I/O >
NA-4020/4021
RS-485 or RS-232 network adaptors
NA-4020/4021
Specifi cations
Ordering Information
ioLogik 4000
Modbus RS-485
NA-4020
SYS
TxD
RxD
I/O
Field
Power
0 1
2 3
4 5
6 7
SG
Field Power (0 VDC)
Field Power (24 VDC)
SG
24V 0V
0V 0V
24V 24V
System Power (0 VDC)
System Power (24 VDC)
Field Power (0 VDC)
Field Power (24 VDC)
Shielding Ground
System Power (5 VDC)
System Power (GND)
System Bus
Non-isolation
Switching
Power
NA-4000 series
M-1000/2000/3000/4000/6000
series
M-7000 series
Step 1: Select a network adaptor module
Step 2: Select I/O modules Step 3: Select power modules (optional)
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
• NA-4021: TxD, RxD, Gnd
Software Features
Protocols: Modbus/RTU, Modbus/ASCII
Modbus Address: 00 to 99 (set by rotary switches)
Utility: ioAdmin
Programming Library: MXIO DLL library for Windows; Supports
Visual Basic, Visual C++, Borland C++ Builder
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 typical @ 24 VDC
Current for I/O Modules: Max. 1.5 A @ 5 VDC
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: 42 x 99 x 70 mm (1.65 x 3.9 x 2.75 in)
Weight: 150 g
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)
Regulatory Approvals
Safety: UL508
EMC: CE IEC 61000-6-2, IEC 61000-6-4
Vibration: IEC-68-2-6 (2 g’s during operation)
Warranty
Warranty Period: 2 years
Details: See www.moxa.com/warranty
Available Models
NA-4020: RS-485 network adaptor (Modbus)
NA-4021: RS-232 network adaptor (Modbus)
Note: The NA-4020/4021 RS-485/232 network adaptors can be expanded by adding up to 32 I/O modules. See pages 5-33 to 5-41 to select the M- series modules for your
application.
The certifi cation logos shown here apply to some or all of the products in this
section. For details, see “Regulatory Approvals” under “Specifi cations” below.