support@welotec.de +49(0)2554 – 9130 00

Products

Application wireless enabling handle RADIOSAFE

ATEX Funkfernsteuerungen XD

Contact

Contact us, we will
be glad to advise you

Service

Click here for service

XD series

application in hazardous areas

Request

Description

Remote control + emergency stop function cat. 3 according to EN954-1 for application in hazardous areas, among others with compression proof capsuled receiver.


Applications:

  • Silos
  • Dust separators
  • Shredders
  • Dryers
  • Mixing machines
  • Grinding machines
  • Transport of bulk products (liquids, powder)
  • Gas transports
  • Overhead cranes
  • Gantry cranes
  • Lifting blocks

Technical Details

Technical detail

ATEX-characteristics transmitter
  • Ex II 1 GD
  • Ex ia IIB T5
  • Ex iaD A20 T100°C
  • Application zones: 1, 2, 21 and 22
ATEX-characteristics receiver
  • Ex II 2 GD
  • Ex dia IIB T6
  • Ex tD A21 T80°C
  • Application zones: 1, 2, 21 and 22
Radio communication Permanent radio connection
Frequency
  • 64 frequencies in the 433.100 ~ 434.675 MHz-range
  • 12 frequencies in the 869.9875 ~ 869.7125 MHz-range
  • Programmable by the user
Operating mode Simultaneous functions
Safety
  • Emergency-stop cat. 3 according to EN 954-1 (active and passive emergency cut-off that controls 2 positively driven safety relays in the receiver)
  • Redundant signal evaluation by 2 mirco-controllers
  • Permanent monitoring of safety relay status
  • Increased safety level in accordance with European standards and guidelines
Ergonomics Light, compact an ergonomically shaped transmitter
Transmitter versions
  • 6 pushbuttons / switch + start / buzzer + emergency stop
  • 8 pushbuttons / switch + start / buzzer + emergency stop
  • 10 pushbuttons / switch + start / buzzer + emergency stop
Available pushbuttons / switches
  • 1- / 2-stage pushbuttons
  • Selector switch 2 or 3 positions momentary or maintained
  • Selector switch with LED-display
Receiver versions
  • 18 function relays + 1 buzzer relay + 2 safety relays
  • Voltage supply: 12 / 24 V DC or 24 / 48 V AC or 110 / 230 V AC
Operating distance
  • 100 m in the industrial field
  • 300 m on the free field

More

An explosion takes place upon the co-occurrence of the following three elements:

  • Oxygen carrier
    • In this case the oxygen existing in the air
  • Fuel
    • Gas (methane, acetylene, e.t.c.)
    • Damp (benzine, solvents, e.t.c.)
    • Dust (wood, sugar, grain, e.t.c.)
  • Ignition source
    • Electric arc
    • Mechanical spark
    • Temperature rise

      • Definition of explosion-hazard zones due to:

      GAS, DAMPS and MIST

      Zone 0: area with a prevailing existing explosive atmosphere of a mixture consisting of air and fuels such as gases, damps or mist, durable, frequent or during long periods.

      Zone 1: area in which an explosive atmosphere consisting of a mixture of air and fuels such as gases, damps and mists is likely to develop occasionally or in normal operation.

      Zone 2: area in which an explosive atmosphere consisting of a mixture of air and fuels such as gases, damps or mists does not develop in normal operation, or should it finally develop after all lasts for only a short time.

      DUST

      Zone 20: Area in which an explosive atmosphere consisting of a cloud of flammable dust prevails in the air permanently or frequently or for long period.

      Zone 21: Area in which an explosive atmosphere consisting of a cloud of flammable dust can occasionally occur in the air.

      Zone 22: Area in which an explosive atmosphere consisting of a cloud of flammable dust cannot occur in the air in normal operation, or should it finally happen after all is just of a short duration.