{"id":11097,"date":"2026-09-28T13:23:08","date_gmt":"2026-09-28T13:23:08","guid":{"rendered":"https:\/\/berndt-contec.de\/produkt\/ar2-28\/"},"modified":"2026-10-07T12:34:27","modified_gmt":"2026-10-07T12:34:27","slug":"ar2-28","status":"publish","type":"product","link":"https:\/\/berndt-contec.de\/en\/produkt\/ar2-28\/","title":{"rendered":"AR2-28"},"content":{"rendered":"\t\t
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Properties<\/h4>
  • Defrost by regular cycles, or by real-time with remote start<\/li>
  • Sensor input selection between PTC1000 and NTC10k<\/li>
  • 5 relays \u2013 Relay 1 optionally for heating or cooling function<\/li>
  • Door contact and auxiliary input<\/li>
  • AUX I + AUX II each with 6 different operating modes<\/li>
  • 2 parameter groups for implementing two different temperature ranges or for energy saving.<\/li>
  • RS485 interface for integration into monitoring systems<\/li><\/ul>

    <\/h4>

    Applications<\/h4>
    • Control cabinet systems<\/li>
    • Refrigerated counters<\/li>
    • Wall-mounted shelving<\/li>
    • Cold rooms<\/li><\/ul>

      <\/h4>

      Advantages<\/h4>
      • All benefits of universal application + real-time controlled defrost<\/li><\/ul>

        <\/h4>

        Technical data<\/h4>
        <\/th>AR2-28C1Q5E-B<\/th>AR2-28C1T5E-B<\/th><\/tr><\/thead>
        Display<\/td>LCD5-S<\/td>RU33<\/td><\/tr>
        Sensor type<\/td>PTC1000 (KTY81-121) \/ NTC10k<\/td>PTC1000 (KTY81-121) \/ NTC10k<\/td><\/tr>
        Standard equipment<\/td>3 x SN4B20P1\u2026P3<\/td>3 x SN4K20P1\u2026P3<\/td><\/tr>
        Sensor measuring range<\/td>-40 \u2026 +105 \u00b0C<\/td>-40 \u2026 +105 \u00b0C<\/td><\/tr>
        Controller control range<\/td>-50 \u00b0C \u2026 +120 \u00b0C<\/td>-50 \u00b0C \u2026 +120 \u00b0C<\/td><\/tr>
        Resolution<\/td>0.1\u00b0<\/td>0.1\u00b0<\/td><\/tr>
        Input<\/td>Door contact \/ DI2<\/td>Door contact \/ DI2<\/td><\/tr>
        Terminals<\/td>Screw and plug-in terminals<\/td>Screw and plug-in terminals<\/td><\/tr>
        Output type<\/td> <\/td> <\/td><\/tr>
        Relay 1 \/ N.O. contact<\/td>16 (8)A compressor<\/td>16 (8)A compressor<\/td><\/tr>
        Relay 2 \/ N.O. contact<\/td>16 (4)A defrost<\/td>16 (4)A defrost<\/td><\/tr>
        Relay 3 \/ N.O. contact<\/td>8 (3)A evaporator fan<\/td>8 (3)A evaporator fan<\/td><\/tr>
        Relay 4 \/ N.O. contact<\/td>7(2)A AUX I<\/td>7(2)A AUX I<\/td><\/tr>
        Relay 5 \/ Changeover contact<\/td>5A AUX II \/ potential-free<\/td>5A AUX II \/ potential-free<\/td><\/tr>
        Interface<\/td>RS485<\/td>RS485<\/td><\/tr>
        Real-time<\/td>6 times \/ buffer battery > 150h<\/td>6 times \/ buffer battery > 150h<\/td><\/tr>
        Power supply<\/td>230 Vac<\/td>230 Vac<\/td><\/tr>
        Dimensions WxHxD<\/td>105 \u00d7 105 \u00d7 50 mm<\/td>105 \u00d7 105 \u00d7 50 mm<\/td><\/tr>
        Mounting dimensions<\/td>DIN rail<\/td>DIN rail<\/td><\/tr>
        Front protection class<\/td>IP 40<\/td>IP 40<\/td><\/tr>
        Certification<\/td>CE<\/td>CE<\/td><\/tr><\/tbody><\/table>
        <\/th>Display LCD5-S<\/th>Display RU33<\/th><\/tr><\/thead>
        Dimensions WxHxD<\/td>77 \u00d7 35 \u00d7 20 mm<\/td>169 \u00d7 38 \u00d7 25 mm<\/td><\/tr>
        Mounting dimensions WxH<\/td>71 \u00d7 29 mm<\/td>163 \u00d7 31.5 mm<\/td><\/tr>
        Front protection class<\/td>IP 55<\/td>IP 55<\/td><\/tr>
        Operating temperature<\/td>-10 \u2026 +50 \u00b0C<\/td>-10 \u2026 +50 \u00b0C<\/td><\/tr>
        LED colour<\/td>Red<\/td>Orange<\/td><\/tr>
        Connection cable<\/td>FC06-15M01 (on request)<\/td>FC06-05R50 (on request)<\/td><\/tr>
        Certification<\/td>CE<\/td>CE<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

        Split Real-Time Refrigeration Controller<\/h4>\n

        The AR2-28 is a split real-time defrost controller, ideal for all control cabinet systems.
        \nWith its 6 freely programmable real-time defrost times, which can also be easily modified in the Info Menu, it is particularly suitable for all applications where time-controlled and optimised energy distribution of the respective system is crucial.<\/p>\n","protected":false},"featured_media":11098,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[66],"product_tag":[],"class_list":["post-11097","product","type-product","status-publish","has-post-thumbnail","product_cat-refrigeration-controller","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product\/11097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/comments?post=11097"}],"version-history":[{"count":1,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product\/11097\/revisions"}],"predecessor-version":[{"id":11099,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product\/11097\/revisions\/11099"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/media\/11098"}],"wp:attachment":[{"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/media?parent=11097"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product_brand?post=11097"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product_cat?post=11097"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/berndt-contec.de\/en\/wp-json\/wp\/v2\/product_tag?post=11097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}