084b7076
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MPN: EKC 366
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The 084b7076 is a compact electronic climate controller with an enclosure rating of IP20 and a 3-digit LED display. Manufactured by Danfoss, it belongs to the Electronic Climate Controllers series and supports input signals ranging from 4-20 mA to 0-10 V DC. The controller operates at 24 V AC ±15%.
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Product Description:
The 084B7076 is an electronic controller from Danfoss that is supplied under the product code EKC 366. It functions as an interface module for thermal actuators and regulates actuator heating through pulsating 24 V AC output. The controller weighs 300 g and its display is a three-digit LED panel.
The 084B7076 controller operates on a 24 V AC ±15% supply and it supports both 50/ 60 Hz frequencies. Its total apparent power consumption is 80 VA and its own normal power requirement is 5 VA. The unit’s valve load requires 75 VA during operation that can vary according to the conditions. It supports multiple input signals, including 0 - 20 mA/4 - 20 mA current signals, as well as 0 - 10 V DC and 2 - 10 V DC voltage signals. The 084B controller’s input resistance is designed for direct PLC output and its control signals determine actuator temperature offset along with regulation range. The actuator sensor is an NTC type that provides a temperature dependent resistance signal and the controller converts this signal to temperature measurement. The actuator is driven by pulsating output of the controller and its pulse ratio controls the heating as well as the actuator stroke.
The 084B7076 controller supports up to 2.5 mm² multicore cables and comes with clear terminal arrangement, its terminals 25 and 26 carry the 24 V AC supply, terminals 17 and 18 receive the NTC sensor signal, terminals 23 and 24 drive the PTC actuator resistance, the terminals 15 and 16 are used for voltage input signals, while the terminals 18 and 19 are used for current input. This EKC 366 controller possess an enclosure rating of IP20 and it mounts on a DIN rail.
Frequently Asked Questions about 084b7076:
Q: How does the pulsating 24 V AC output in the 084B7076 controller improve actuator control?
A: The pulsating signal allows proportional heating regulation by adjusting the pulse ratio. This ensures smoother actuator movement and prevents unnecessary energy consumption.
Q: Why does the controller use NTC sensors instead of other sensor types?
A: The NTC sensors provide highly accurate resistance-based temperature readings. This ensures precise thermal regulation and compatibility with the controller’s conversion algorithms.
Q: What is the advantage of having both current and voltage input support in the 084B7076 controller?
A: It enables the controller to integrate with a wide range of PLCs and signal sources. This flexibility ensures easy adaptation to different industrial setups.
Q: How does the actuator stroke depend on the controller’s pulse ratio?
A: The pulse ratio directly determines the heating duration applied to the actuator. This controls both the opening stroke length and temperature adjustment speed.
Q: What is the importance of the controller’s separate normal and valve load power ratings?
A: The difference between the controller’s own 5 VA and actuator’s 75 VA ensures correct transformer sizing. This prevents overload and guarantees stable performance.
