8611 Universal Process Controller

Brand: Burkert Fluid Control Systems

The universal 8611 controller is especially designed for compact control system applications.

 It is compatible and tested with all Burkert proportional valves and sensors and can be connected with every none-Burkert Control valve by standard signal (4-20 mA, 0-10 V or PWMoutput). The proportional & Integral (PI) process controller is equipped with many additional functions. 

The process value feedback can be supplied as one of three Analog inputs; a standard signal (4-20 mA/0-10V), frequency or Pt100 signal; directly to the universal controller. The process switching points can be set via a 4-20 mA or 0-10 V signal or with the keypad. 

For temperature specific control, it is possible to set a cascade structure with both temperature and flow as inputs.
Features
  • Continuous, 2-point, 3-point and On/Off control
  • Ratio control function
  • Sensor inputs (4-20 mA, 0-10 V, frequency, Pt100)
  • Control of proportional, process and motor valves

Specifications

Accuracy

  • Output Continuous Signal: 0.5 %

Ambient Temperature Range

  • 0° to 70° C (32° to 158° F)

Applications

  • Conductivity Control
  • Flow Control, Ratio Control
  • Level Control
  • pH Control
  • Pressure Control
  • Temperature Control

Approvals & Certifications

  • CE - EN 61326
  • EMC - EN 61326

Cable Length

  • Voltage Supply: 0.5 mm², Max.
  • Voltage Supply: 328.1 feet (100 metres) Shielded

Consumption

  • Power: Approximately 2 W (without Valve - without Sensor Input)

Control Functions Characteristics

  • ON/OFF

Cover Material

  • 20 % Glass Fibre

Display

  • Dual Line 8-Digit LCD with Backlight

Electrical Connectors

  • Insert for Connecting to Components According to DIN EN 175301-803
  • Multipin: M12-8-Pin
  • Multipin: M8-3-Pin, 4-Pin
  • Terminals

Enclosure, Body Material

  • Polycarbonate (PC), 20 % Glass Fibre

Environmental Protection

  • IP65

Frequency

  • Binary Input: 1 kHz, Max.
  • External Sensor (Input 1), Internal Hall Sensor (Input 2): 0.25 Hz to 1 kHz
  • Output Discontinuous Signal (Control Frequency): 20 to 9,999 Hz

Function

  • 2-Point Control
  • 3-Point Control

Humidity

  • ≤ 80 % Relative Humidity, without Condensation

Input

  • Set Point, Sensor: 0-10 V
  • Set Point, Sensor: 4-20 mA

Input Impedance

  • Binary Input: 10 kiloohms
  • Sensor Frequency (Input 1): > 1 kiloohms
  • Set Point, Sensor (Standard 0-10 V): 11.5 kiloohms, Max.
  • Set Point, Sensor (Standard 4-20 mA): 70 ohms, Max.

Loop Resistance

  • Output Continuous Signal: 680 ohms, Max.

Materials of Construction

  • Front Panel Folio: Polyester
  • Multipin: Brass (CuZn)
  • Multipin: Nickel-Plated
  • Wall Mounting Holder: PVC

Measuring Error

  • Pt100 (2-Wire): < 0.5° C (32.9° F)

Measuring Range

  • Pt100 (2-Wire): 0° to 200° C (32° to 392° F)

Mounting

  • Panel Mount
  • Rail Mounting
  • Wall Mounted

Operating Temperature

  • 0° to 70° C (32° to 158° F)

Operating Voltages

  • 24 Vdc ± 10 %, Filtered & Regulated
  • Binary Input (Operating Threshold): 3-30 V

Output

  • Continuous Signal (Standard Signal): 0-10 V
  • Continuous Signal: 20 mA - Max.
  • Continuous Signal: 4-20 mA
  • Output Discontinuous Signal, Binary (Current Load): 1.5 A, Max.
  • Output Discontinuous Signal, Binary (Switching): 24 Vdc

Power Supply

  • Sensor/Actuator: 24 Vdc, Max.

Resolution

  • Input Set Point, Sensor (Standard 0-10 V): 2.5 mV
  • Input Set Point, Sensor (Standard 4-20 mA): 5.5 μA
  • Output Discontinuous Signal: 16-bits, Max.

Screw Material

  • Stainless Steel

Sensor Input

  • 0-10 V
  • 4-20 mA

Sensor, Probe Type

  • Pt100

Storage Temperature

  • 0° to 70° C (32° to 158° F)

  • Flow control, Ratio control
  • Pressure control
  • Temperature control
  • Conductivity control
  • pH control
  • Level control

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