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Device DDI-24 – 24V АИАР.426449.001-01

Device DDI-24 - 24V АИАР.426449.001-01 5991
Device DDI-24 - 24V АИАР.426449.001-01 4362
Device DDI-24 - 24V АИАР.426449.001-01 4363

Device DDI-24 is intended for input of discrete electrical signals for their processing and data exchange via three-wire serial RS485 interface lines with Modbus RTU protocol. Device DDI-24 can be used in various automated monitoring and control systems


  • Number of digital input channels - 24 channels with galvanic isolation.
  • The dielectric strength of the isolation of the discrete input channels and power inputs is 1.5 kV.
  • Type of voltage on the discrete input channel - DC or AC.
  • The maximum allowable voltage on the digital input channel is 30 V.
  • The “logic zero” level is from 0 to 11V, the “logic one” level is from 17 V to 24 V.
  • The device is powered from a constant current source with a voltage of 7 to 40 V.
  • The power consumed by the device from a DC source is no more than 3 W.
  • In the event of a main power failure, there is a backup power supply input with the same parameters.
  • Resistance to short-term interruption of supply voltage, not less than 0.5 s
  • The time the device is ready for operation after the supply voltage is applied to it, no more than 0.5 s
  • DDI-24 weight - no more than 250 g.
  • The DDI-24 is designed for DIN rail mounting.
  • Information transfer is carried out through the RS485 interface using the Modbus RTU exchange protocol.
  • Ethernet interface (RJ-45) - IEC 60870-5 104 exchange protocol (optional);

Software Wisinet2 for МРЗС-05Л, МРЗС-05Д, MRZS