Carel IR33 Panel Mount PID Temperature Controller, 76.2 x 34.2mm, 4 Output SSR, 115 230 V ac Supply Voltage

  • RS Stock No. 783-4706
  • Mfr. Part No. IR33A7HR20
  • Manufacturer Carel
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): IT
Product Details

IR33 Universal Electronic Controllers

The IR33 series of universal electronic controllers from Carel are a panel mounted controller offering an updated and upgraded module to replace its IR32 predecessor. The IR33 series controllers feature two independent control loops and now with the addition of auto tuning and a real-time clock for cycle and alarm management, the IR33 range of controllers fare suitable for a range of applications.

Featuring a simple user interface with a clear LED screen and large control buttons, the controllers are easy to commission as well as coming in a standard 76.2 x 34.2mm size suitable for a 71 x 29mm panel cut out. Powered from 12 to 24 V ac/dc or by 115-230 V ac the units can also be used with transformers to for powering low voltage controllers from 110 V ac or 230 V ac.

All of the IR33 series controllers are capability of network connectivity for both monitoring and programming purposes to make the IR33 controllers truly versatile. Using the optional RS-485 series interface you can content any of the SSR, Relay or Relay/Analogue units for complete ease of use.

Auto Tuning

Auto tuning within the controller gives vital accuracy during configuration. The auto tune function uses rule based calculations typically used by experienced engineers to configure the controller either at the set-point or whist the load is being heated from an ambient temperature.

Supplied with a default factory setting, the PID parameters allow standard control and functionality but are not optimised for the system the IR33 will control. Auto-tuning the controller is used to fine-tune the 3 control parameters involved to ensure the controller is optimised for any application.

Real-time Clock

The addition of a real-time clock (RTC) to the IR33 series aids in the management of working cycles within the controller as well as to support logging alarms. The RTC in the controller is a low power resource for accurate time keeping freeing up system power for accurate monitoring and control.

Working cycles controlled by the IR33 can rely on the internal clock for accuracy with the ability to remain time keeping even when the main system power source is off or unavailable.

Real-time clocks are key to accuracy within time based controllers and should not be confused with hardware clocks governing digital information. Real-time clocks, unlike hardware clocks count in human time units for relative control.

Features and Benefits

• Temperature input or universal input
• Relay or SSR output versions
• 2 independent control loops
• Auto-tuning PID control
• Real-time clock
• Infrared receiver and buzzer
• Plug-in terminals
• Remote Control option
• Programming key compatibility

The IR33A7HR20 model controller features 4 Solid State Relay outputs. These outputs are most suited to application solutions where one or more PWN outputs are required. In this instance relays become impractical and solid state relays can be used to manage processes according to the application requirement. With the addition of standard on/off functionality the IR33A7HR20 is a versatile controller for any number of applications.

Optional Expansion

Suitable for use with remote controls, the IR33 series can use an infrared remote control allowing access to all main functions as well for configuring system parameters. This allows easy set up and use of all IR33 controllers from a distance. Find the IRTRUES000 IR33 Remote Control here: 745-7999>Programming keys are a simple and effective way to quickly program controllers both when on and also when not connected to a power supply. This disconnected programming function can reduce the risk of errors in the controller. A programming key allows for fast and effective technical service and can be used in just a few seconds for ease.Find the IROPZKEY00 Programming Key Here: 745-8002

Attribute Value
Output Type SSR
Supply Voltage 115 230 V ac
Size 76.2 x 34.2mm
Number of Outputs 4
Minimum Operating Temperature -10°C
Maximum Operating Temperature +60°C
Temperature Range -50 +150 (PTC 1000) °C, -50 +150 (PTC) °C, -50 +90 (NTC) °C, -40 +150 (NTC-HT) °C
Communication Module Available Yes
Display Type Single Line
IP Rating IP65
Range Carel IR33
Mounting Type Panel Mount
Panel Depth 94mm
Series IR33
2 In stock for delivery within 5 working day(s)
Price (ex. GST) Each
Was $241.79
$ 175.28
(exc. GST)
$ 201.57
(inc. GST)
Per unit
1 +
Related Products
Dedicated refrigeration monitors designed specifically for the management ...
Dedicated refrigeration monitors designed specifically for the management of chilled showcases, refrigerated units and display cases. Serial connection for comprehensive compatibility. Preset configurations and programme key ensures swift set upNTC thermistor input supportedIP65 front panel mounting. Integrated ...
“Easy freeze” is an electronic microprocessor controllers with ...
“Easy freeze” is an electronic microprocessor controllers with LED display developed for the management of refrigerating units, display cabinets and showcases. For low temperature ventilated refrigeration units. Pre-configured to reduce the start-up times. Limited number of parameter, only 27Power supply ...
Dedicated refrigeration controllers designed specifically for chilled showcases, ...
Dedicated refrigeration controllers designed specifically for chilled showcases, refrigerated units and display cases.PJEZS (Stock No. 809-0997)Designed with static refrigeration units in mind and a single NTC Sensor inputPJEZC (Stock No. 809-0994 & 913-9983)Ventilated unit dedicated controller, suitable for use ...
The SIPART DR21 controller can be configured to ...
The SIPART DR21 controller can be configured to operate as a continuous controller, a stepper controller for motorised drives or as a two-position controller. • Two analog inputs for current 0/4 to 20 mA, without potential isolation • Y-analog output ...