084B8536
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The 084B8536 programmable controller from Danfoss is designed for panel mounting and operates with a 230V AC power supply. Part of the MCX Programmable Controllers series, it supports Modbus and LON communication protocols. It includes 4 digital outputs, 3 analog inputs, and relays for compressors and defrost.
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Product Description:
The 084B8536 is a programmable controller built by Danfoss for precise temperature control in cooling applications using TXV regulation. It provides stable process control with four independent relay outputs. The controller’s supply requirement is 230 V AC with a frequency range of 50 or 60 Hz and its rated power consumption is 2.5 VA.
The 084B8536 controller features communication options of Extra LON and Extra MODBUS to integration into advanced monitoring and building management systems. Its compatible display modules include ACRE 163A, ACRE 164A and a direct display foran option is supported as well. The unit’s relay outputs are designed for 250 V AC switching capacity and its output ratings include 5 A resistive, 5FLA 30LRA inductive, 6 A resistive, 3FLA 18LRA inductive and 4 A resistive. Its relay configuration supports fan, defrost, light and alarm control functions. This 084B8 controller supports multiple sensor inputs that includes NTC, PTC 1000 and Pt 1000 sensors for accurate monitoring of evaporator temperature, air temperature and defrost sensing. It possesses digital inputs for door contacts and switch signals. The unit offer easy panel mounting through its provided side locks.
The 084B8536 controller possess a compact design with a front panel width of 84 mm and total depth 80 mm. It is IP65 protected and comes in a black color with three-digit red display. The unit’s front panel is composed of three buttons labeled for power on/off, settings and selection purposes. It has a net weight of 0.218 kg and it is categorized under EEE category 5 equipment. The device complies with EU RoHS and China RoHS regulations with exemptions. It is optimized for refrigeration systems that requires accurate evaporator and compressor management.
Frequently Asked Questions about 084B8536:
Q: What’s the benefit of the 084B8536 having four independent relay outputs?
A: The four relays let the 084B8536 separately control fan, defrost, lighting, and alarm circuits, giving fine-grained control over each subsystem. This modularity enhances system flexibility and simplifies maintenance or upgrades.
Q: How does supporting NTC, PTC 1000, and Pt 1000 sensors enhance the 084B8536’s accuracy?
A: The 084B8536 can leverage whichever sensor offers optimum accuracy or availability for a given application. This compatibility enables precise evaporator and ambient measurements across refrigerant systems.
Q: How does the compact 84 mm width of the 084B8536 benefit panel installations?
A: With its slim 84 mm front, the 084B8536 fits standard DIN-style cutouts and conserves valuable panel space. It allows denser controller layouts and easier retrofits in existing control cabinets.
Q: What advantage does 2.5 VA power consumption bring to the 084B8536?
A: The low 2.5 VA demand of the 084B8536 minimizes load on control transformers, enabling streamlined power distribution and reduced heat generation inside control panels. It’s energy-efficient and suitable for compact electrical designs.
Q: Why is IP65 front-panel protection important for the 084B8536?
A: The IP65 shielding ensures the 084B8536's front panel is dust-tight and water-resistant, which is crucial in cold-room environments with condensate or cleaning. It improves durability and reliability under challenging refrigeration conditions.
