System DATCOM-RTU

System DATCOM-RTU

Product description

System DATCOM-RTU is intended for monitoring technological processes, transferring recorded data to superior system, watching limiting values, and transferring alarm reports by calling to superior system and regulating slow processes (max.0,5Hz). This system is also constructed for measuring signals coming from hazardous area, while some of its modules can be directly placed in this area.

Into system can be, according to concrete application, integrated selected modules with mounting on DIN lath, display unit for placing into door of switchboard and temperature and pressure transducers, which can be placed even to hazardous area. For measuring random quantities can be used even transducers from other producers, which have standard outputs.

Use of system is multipurpose, individual blocks can also be placed separately, for instance one part in telemetric switchboard and other part near the measured object (placing in box with shielding).

Characteristics of the whole system can be summarized into following points:

  • modularity – adaptability to given measurement point, easy extensibility during change of task defining
  • system openness – possibility of connection of sensors or devices from other producers
  • telemetric properties – collection and storage of data, indication of limit states, communication with superior computer, sending alarms to dispatching, communication via standard media, various protocols
  • backing-up feeding of system from accumulator – including alternating or direct feeding for modem
  • inbuilt regulation elements – regulation of slow processes
  • possibility of direct connection of selected signals from hazardous area
  • possibility of dislocation of part of system from central unit – saving of costs for cabling, mor
  • favorable situation from the perspective of electromagnetic disturbance from environment
  • galvanic separation – simplified installation, system protection against extraneous influence (overvoltage, failure of other devices …)
  • possibility to increase climatic resistance
  • possibility of firmware update of processor modules (module CPU even remotely)
  • possibility of reduction of system consumption – extension of back-up time, possibility of feeding from battery or from alternative sources of electric energy

Overview and functions

Standardly is system fed from electric network via power supply 12V/2A with possibility of back-up feeding of system by accumulator. However system also enables selection of special operating state, when the current consumption of device is lowered to minimum, and system can be in the long run in operation (several years) during feeding from 2  lithium battery cells 3,6V/Ah. In this regime are put out some module circuits from operation and therefore is not possible to fully use all system possibilities.

Whole system is concepted as modular.

List of produced modules:

  • UPS
  • CPU
  • SIO
  • DIO-8 (DIO-8/IS)
  • AO-2
  • COM
  • ISS
  • AI-7 (AI-7/A)

Through the need of deployement of the system even in an explosive enviroment, some modules are made in two different colour schemes. The basic module is of gray colour, module for explosive enviroment is of blue colour.

Individual modules of system are mutually interconnected with system busbar, which serves for distribution of power supply and communication signals. With the aid of this busbar are also connected digital transducers of pressure and temperature.

Communication between modules via internal busbar with protocol Modbus is asychronic serial, with transmission rate 38400Bd, while each module has its assigned unique address. During dislocation of system block or during passageway through module ISS are not transmitted all signals of system busbar into another block of modules.


Contacts

ELGAS, s.r.o.

Semtínská 211

Ohrazenice
533 53 Pardubice

E-mail:
Tel.: +420 466 414 500

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