CPU401-1101 Nanda NA-RTU

RTU(Remote Terminal Unit) is the abbreviation of Remote Terminal Unit. It is the basic unit of SCADA system. SCADA is a kind of data acquisition and monitoring control system for production system of long distance distribution and decentralized production operation units. It is used for surveillance and control for on-site signals and industrial equipment. An RTU can have several, dozens or hundreds of I/O points. It can be placed in the site nearby the measuring point.

RTU has at least the following two functions:
1) Data acquisition and processing;
2) Data transmission (network communication).

Of course, RTU in many other special industries also has functions of PID control or logic control and flow accumulative total and so on. RTU usually has excellent communication ability and greater memory capacity, which is suitable for more severe temperature and humidity conditions, to provide more computing functions.
Introduction of NAPro programming software

We provide free programming and debugging development tool – NAPro programming software supporting programming languages complied with the international standard of IEC61131-3 and original sequential control chart (SCC) language, and we also provide software customization services with reasonable charges. NAPro not only supports online debugging and download, but also supports offline simulation so that program development is more efficient. The system configuration of NAPro is simple, and the programming is easy to learn. It provides breakpoint, single-step execution, surveillance execution, debugging execution and other debugging methods. Its convenience is much better than foreign RTU programming software.
NAPro supports all five programming languages of IEC61113-3 international standard. Any code segment in a same project can either choose different programming languages, and can call each other. The five programming languages include:
1) LD: Ladder Diagram
2) ST: Structured Text
3) IL: Instruction List
4) FBD: Function Black Diagram
5) SFC: Sequential Function Chart

Nanda NA-RTU

Features
Specifications

Function introduction of Nanda NA-RTU (CPU401-1101)

RTU has Ethernet interface, RS232 interface, RS485 interface, ZigBee wireless communication interface, digital input interface, digital output interface, analog input interface and I/O expansion module interfaces etc.;
Support I/O expansion, maximum 8 I/O modules can be expanded;
RTU can be programmed via Ethernet interface to achieve complex logic control, data acquisition and uploading;
Support I/O interface, RS485 filed bus interface, ZigBee wireless network data acquisition function;
Support the function of initiatively upload RTU alarm data to SCADA system (upstream communication protocol: IEC60870-5-104 or Modbus TCP);
Support multiple indicator diagram data acquisition methods;
Support measurement and assistant analysis by electrical diagram: it can measure indicator diagram in real-time indirectly and make assistant analysis on oil well working conditions by using motor electrical data;
Support power-down data conservation function;
With calendar clock and support network communication timing (power-down conservation time of calendar clock is 3 months);
It has large capacity data cache (10 days) for RTU monitoring data with time mark, which supports upstream network break off;
Support on-site measurement and control, configuration and debugging of RTU through notebook;
Support the functions of remote configuration and modifying parameters;
Built-in with temperature measurement module which can monitor ambient temperature in real-time;
It has PT100 temperature interface for monitoring ambient temperature in real-time;
Meet the requirements of field and complex electrical environment applications.

Technical Parameters of Nanda NA-RTU (CPU401-1101):

Hardware parameters
Processor	32-bit microprocessor, basic frequency: 200MHz, embedded operating system
Memory	Standard configuration: 32MB memory with power-down data conservation
Power supply	AC 85V～265V
Stand-by power	DC 24V
5 * analog input (AI)	Input signal range: 4～20mA, with overvoltage & overcurrent protection
12 * digital input (DI)	PNP type, internal power supply: 24V
10 * digital output (DO)	Relay output, capacity: 5A/250VAC, 5A/30VDC
3 * RS485	Modbus RTU (master/slave, free protocol)
1 * RS232	Modbus RTU (master/slave, free protocol)
1* Ethernet (RJ45 (100M))	Modbus TCP or IEC60870-5-104 protocol
1 * 2.4G ZigBee communication interface	SZ9-GRM V301 or Modbus RTU protocol
Watchdog, real-time calendar clock	Power-down conservation time of calendar clock: 3 months
Operation temperature	-40℃～+70℃
Storage temperature	-55℃～+85℃
Relative humidity	5%～95% (no condensation)
Weight	480 g
EMC (Electromagnetic Compatibility) parameters
Surge immunity	IEC61000-4-5: 2kV (Common mode)/1kV (Differential Mode)
Sasser immunity	IEC61000-4-12: 2.5kV (Common mode)/1kV (Differential Mode)
Fast Transient	IEC61000-4-4: ±2kV（Power source）/±1kV (I/O)
Electrostatic Discharge (ESD) (Shell)	IEC61000-4-2: ±8kV（Air）/±6kV (Contact)
Electromagnetic radiation interference	IEC61000-4-3: 10V/m, Frequency: 80MHz ~ 1GHz
Radiation interference	IEC61131-2: 30 ~ 230MHz, 10m, Quasi-peak value: < 40dB(μV/m); 230 ~ 1000MHz, 10m, Quasi-peak value: < 47dB(μV/m)
Conducted interference	IEC61131-2: 0.15 ~ 0.5MHz, Quasi-peak value: < 79dB(μV), Average value: < 66dB(μV); 0.5 ~ 30MHz, Quasi-peak value: < 73dB(μV), Average value: < 60dB(μV)
Software parameters
Programming languages	Five IEC61131-3 international standards programming languages: 1) LD: Ladder Diagram 2) ST: Structured Text 3) IL: Instruction List 4) FBD: Function Black Diagram 5) SFC: Sequential Function Chart
Program memory	4M
Bit register	2048
Word register	8192
Power-down conservation word register	512
User-defined variables	32K
Timer	512
Counter	512

Sign up for our newsletter