DI840

The DI840 is a 16 channel 24 V d.c. digital input module for single or redundant applications. The input voltage range is 18 to 30 V d.c. and the input current is 7 mA at 24 V d.c. Each input channel consists of current limiting components, EMC protection components, input state indication LED and optical isolation barrier. The transducer power is supervised and current limited; one output per two input channels. The Sequence of Event function (SOE) can collect events with a resolution of 1 ms. The event queue can contain up to 257 events. The function includes a Shutter filter for filtering out unwanted events.

Features and benefits

  • 16 channels for 24 V d.c. inputs with current sinking
  • 1 group of 16 isolated from ground
  • Input status indicators
  • Advanced on-board diagnostics
  • Sequence of events
  • Redundant or single applications
  • Transducer power distribution