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Analog-to-Digital Converter

KUNBUS-AD

Analog-to-Digital Converter for Profibus networks

The KUNBUS-AD was developed to connect analogue output data from sensors to a network directly. Alongside a Config-Debug interface(CDI), this analog-to-digital converter has a shift register interface (SPI). These interfaces allow you to easily connect several input and output devices (e.g. switches, LEDs). This allows threshold value alarms and simple control tasks to be handled directly from the module, without additional intelligence.

 

Application Interfaces:

  • Four 4-20 mA inputs
  • Four 0-10 V inputs
  • One PT100/1000 temperature input
  • Two voltage outputs

 

Article: Article number:
KUNBUS-AD Profibus 100053
Downloads
KUNBUS-AD PROFIBUS User Manual
KUNBUS-AD PROFIBUS GSD File
KUNBUS-AD PROFIBUS Certificate

Further specs

  • Current loop resistance: 147 Ω
  • Measurement current PT100 / PT1000: 0.833 mA
  • Same PIN-OUT for application
  • CDI Interface (Config, Debug, Status)
  • Parameter change during operation
  • Galvanic isolation up to 1.5 kV
  • Connection to the application via ERNI SMC 32 connector
  • Cycle time < 2 ms
  • Integrated diagnostics LEDs
  • Integrated adjustment elements
  • RS485 support for Modbus RTU
  • I/O settings via the master
  • Automatic baud rate adjustment
  • Adjustable sliding average value formation from 1 to 1000
  • Freely definable linear scaling for inputs and outputs (integer, max. 16 Bit)
  • Adjustment threshold values with alarm function for when measurement values are exceeded or undersho
  • Recording the smallest and largest measurement values

Specifications

Resolution of the analogue inputs

  • ADC 12-bit, scaled 16-bit

Measurement precision without calibration in the specified measurement range

  • Error voltage inputs: < 0.1% (10 mV)
  • Error current loop inputs: < 0.1% (20 µA)
  • Error temperature: < 1.5 °C (< 0.5 °C after offset correction)
  • Error analogue outputs: < 0.1% (3 mV, RL > 5 KΩ)

Analogue inputs measurement ranges

  • Voltage: 0.05 to 10 V
  • Current: 3.8 to 20.35 mA
  • Temperature: -200 to +300°C

Analogue outputs range

  • 0 to 3 V (50 Ω internal resistance)

Measurement frequency

  • Voltage/Current: 1/13 ms
  • Temperature: 1/350 ms
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