Differential controller with independent timer

Brand: Ascon Tecnologic

The KUBE 8 series allows a differential control, a temperature control based on the reading difference of 2 thermocouples.

Other functions on board are:

  • Dimension: 78 × 35 mm
  • Control function: PID single or double action, ON/OFF, ON/OFF with Neutral Zone, Autotuning and Self-tuning algorithms, Overshoot control, four programmable Set Points, and motorized actuators.
  • Alarm function: three alarms programmable as absolute, deviation, band
  • Serial communication: TTL (standard) + RS485 (optional), ModBus RTU protocol with 1200… 38400 baud rate.
  • evoGreen: Stand-by mode of display for energy saving
  • evoTune: the best tunning solution for the current situation and “trouble-free” adjustment.
  • evoTools: a quick start-up with code-based configuration and instant parameterization by programming key
  • User calibration: for sensor position, class, and accuracy compensation
  • Independent timer function: five different operating modes
  • Signal Retransmission: Measuring or Set-point retransmission
  • Analog Control Output: current or voltage

Download the manuals and Get an Offer for you desired Part Number

793 AED Get an Offer

Catalogue
Specifications
Function

Differential controller

Brand

Ascon Tecnologic

Analog Input

Yes

Digital Input

Yes

Number of Outputs

4

Analog Output

1, Yes

Digital Output

Yes

Interface

RS-485, TTL

Protocol

MODBUS RTU Master, MODBUS RTU Slave

Transmission Rate

1200 to 38400 bit/s

Independent Timer

YES

Control

Motorized actuators, ON/OFF and PID single or double action

Special Functions

ON time, Power on delay, Soft start, Transmitter power supply , User calibration

Certification

CE, UL

Display

2 displays with 4 digit 3 dynamic colours

Power Supply

24 Vac/Vdc, 100… 240 Vac

Operating Temperature

0 to +50°C

Protection Degree

IP 65

Dimension

78 x 35 mm

Weight

200g

Other product features
Weight

200 g

Dimensions

78 × 35 mm

Alarm function

KR8 has the capability to generate various types of alarms based on the process requirements.

    • Absolute low alarm (LoAb)
    • Absolute high alarm (HiAb)
  • Absolute band alarm with alarm indication out of the band
  • Absolute band alarm with alarm indication inside the band
  • Sensor break
  • Deviation low alarm (relative)
  • Deviation high alarm (relative)
  • Relative band alarm with alarm indication out of the band
  • Relative band alarm with alarm indication inside the band

Control function

The device can be programmed for 2 control types:

    • Two control actions (heat & cool) with 2 methods:
    • PID (heat and cool);
    • Heat/Cool ON/OFF control with neutral zone;

and

    • One control action (heat or cool) with 4 methods:
    • PID (heat or cool);
    • ON/OFF asymmetric hysteresis;
    • ON/OFF symmetric hysteresis;
    • Servomotor control (available when Output 2 and Output 3 have been ordered as “M”)

KR8 also has the Fuzzy overshoot control feature that reduces the overshoot usually present at instrument start-up or after a set point change, and by setting a value between 0.00 and 1.00, it is possible to slow down the instrument action during the set point approach.

Timer function

Five timer types are available:

  • Delayed start with a delay time and an “end of cycle” time.
  • Delayed start at power up with a delay time and an “end of cycle” time.
  • Feed-through.
  • Asymmetrical oscillator with a start in OFF.
  • Asymmetrical oscillator with a start in ON.

Programmer function

These instruments are able to perform a set point profile compounded of 4 groups of 2 steps (8 step total).

The first step is a ramp (used to reach the desired set point), the second is a soak (on the desired set point). When a RUN command is detected, the instrument aligns the operative set point to the measured value and executes the first ramp.

In addition, each soak is equipped with a waiting band which suspends the time count when the measured value goes out of the defined band (guaranteed soak).

Moreover, for each segment, it is possible to define the status of two events. An event can drive output and make an action during one or more specific program steps.

Some additional parameters allow for defining the time scale, the automatic RUN conditions, and the instrument behavior at the end of the program.

All steps can be modified during program execution. During program execution, the instrument stores the segment currently in use and, at a 30 minutes interval, also stores the elapsed time of the soaks. Suppose a power-down occurs during program execution at the next power-up. In that case, the instrument is able to continue the program execution starting from the segment in progress at power down. If the segment was a soak, it is also capable of restarting from the soak time minus the stored elapsed time.

The first step is a ramp (used to reach the desired set point), and the second is a soak (on the desired set point). When a RUN command is detected, the instrument aligns the operative set point to the measured value and executes the first ramp.

Source: Ascon KR8 Official Page

Product Document:

Certifications:

Be the first to review “Differential controller with independent timer”

Your email address will not be published. Required fields are marked *

There are no reviews yet.

You may also like…

WhatsApp