Controller, programmer with independent timer

Model : KR3

Brand: Ascon Tecnologic

KUBE series: the evolution that has something more!
In addition to the normal temperature control functions, there are several advanced functions:

  • 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, and 4 programmable Set Points.
  • 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
  • Hour meter/working days: two functions and a configurable alarm
  • Wattmeter: measuring power and energy consumption

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Catalogue
Specifications
Function

Controller, Programmer, Transmitter

Brand

Ascon Tecnologic

Input Type

DC Current, DC Voltage, Pt100, Pt1000, PTC-NTC, Thermocouple, Universal

Analog Input

Yes

Analog Input Ranges

0/1… 5 V, 0/2… 10 V, 0/4… 20 mA

Digital Input

1, 2, Yes

Number of Outputs

1, 2, 3, 4

Output Type

DC Current, DC Voltage, Relay and/or SSR control, Servomotor

Analog Output

Yes

Analog Output Ranges

0/2… 10 V, 0/4… 20 mA

Digital Output

Yes

Retransmission Output

0/2… 10 V, 0/4… 20 mA

Interface

RS-485, TTL

Protocol

MODBUS RTU Slave

Transmission Rate

1200 to 38400 bit/s

Extarctability

Not extractable, With fix terminal block, With removable terminal block

Independent Timer

YES

Control

ON/OFF and PID single or double action, Servomotor

Number Of Programs/Segments

1 program with 16 segments, 1 program with 8 segments, 4 programs with 16 segments, 8 programs with 12 segments

Special Functions

Digital retransmission, Hours/Days worked, ON time, Power on delay, Soft start, Transmitter power supply , User calibration, Wattmeter

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

125g

Other product features
Weight

125 g

Dimensions

78 × 35 mm

Alarm function

KR3 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”)

KM1 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 a “end of cycle” time.
  • Delayed start at power up with a delay time and a “end of cycle” time.
  • Feed-through.
  • Asymmetrical oscillator with start in OFF.
  • Asymmetrical oscillator with start in ON.

Programmer function

These instruments can 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 starts to execute 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 an output and make an action during one or more specific program steps.

Some additional parameters allow 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, stores also the elapsed time of the soaks. If a power down occurs during program execution, at the next power up, the instrument is able to continue the program execution starting from the segment in progress at power down, and 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 starts to execute the first ramp.

Source: AsconKR3 Official Page

Product Document:

Certifications:

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