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EU declaration conformity
Air heater / cooler controller | EC fans
Product description
The ECH-8-DM, is the go-to controller for air heaters or air coolers equipped with EC fans. Designed with user-friendliness at its core, the ECH streamlines the management of ambient temperatures in spaces like warehouses or industrial areas.
Temperature management becomes a breeze with the ECH's intuitive interface. A rotary knob on the front panel empowers users to fine-tune temperature setpoints within the range of 5 - 35 °C. This hands-on approach puts you in direct control, ensuring that your environmental conditions are precisely calibrated to meet your requirements. The ECH offers automated control of the EC fan speed, responding dynamically to ambient temperature changes, or users can alternatively adjust the fan speed manually, selecting from five distinct steps. The ECH's versatility extends to its unregulated output, allowing seamless control over a water valve or an electric heating element.
Modbus communication takes functionality to the next level, enabling users to effortlessly toggle the unregulated output between cooling and heating modes. Alternatively, a straightforward jumper selection offers a quick and efficient way to switch between modes, giving you the autonomy to choose the method that suits your operational preferences.
In summary, the ECH stands as a beacon of efficiency in temperature control, seamlessly integrating into your air heating or cooling systems. Its user-friendly features, from automated fan speed adjustments to manual controls and versatile output options, make it a reliable choice for industries seeking precision and adaptability.
Additional specifications and description
Heating or cooling
Via the unregulated output, a water damper or a heating element can be controlled. This output offers ON / OFF control. In heating mode, the unregulated output is activated when the ambient temperature is lower than the requested setpoint temperature. In cooling mode, the unregulated output is activated when the ambient temperature is higher than the requested setpoint temperature. When activated, the unregulated output offers the supplied voltage (in the range of 85 - 230 VAC). The maximum load is 10 A. Cooling or heating mode can be activated via Modbus communication or via a jumper.
EC fan speed control modes
EC fan speed control modes
Electronically Commutated (EC) fans are energy-efficient devices commonly used in HVAC systems. They are known for their advanced motor technology, combining the benefits of AC and DC motors.
EC fan speed can be controlled via the analogue output. EC fan speed can be manually set via the rotary switch on the front panel. There is the possibility to select one of the five available fixed speeds, there is an OFF position and automatic mode.
In automatic mode, EC fan speed is regulated automatically based on the ambient temperature. High and low speed can be adjusted via the Modbus registers if necessary. The analogue output range can be selected via a jumper or via Modbus communication: 0 - 6 VDC or 0 - 10 VDC.
The controller also features the so-called remote mode. It turns off all user interfaces except Modbus RTU communication. After remote mode has been selected (via Modbus holding register 20), the RGB LED indication, the analogue output and unregulated output states are controlled by Modbus master device via holding registers 21 - 24.
EC fan speed can be controlled via the analogue output. EC fan speed can be manually set via the rotary switch on the front panel. There is the possibility to select one of the five available fixed speeds, there is an OFF position and automatic mode.
In automatic mode, EC fan speed is regulated automatically based on the ambient temperature. High and low speed can be adjusted via the Modbus registers if necessary. The analogue output range can be selected via a jumper or via Modbus communication: 0 - 6 VDC or 0 - 10 VDC.
The controller also features the so-called remote mode. It turns off all user interfaces except Modbus RTU communication. After remote mode has been selected (via Modbus holding register 20), the RGB LED indication, the analogue output and unregulated output states are controlled by Modbus master device via holding registers 21 - 24.
Cloud control
When remote mode is active, EC fan speed, the unregulated output and the LED indicator are controlled via the relevant Modbus holding registers. By adjusting the value in the Modbus registers via the SenteraWeb cloud or via a BMS system, fan speed can be adjusted and the unregulated output can be activated or deactivated. To connect the ECH controller to SenteraWeb cloud, an optional internet gateway is required.
Remote control mode disables all user interfaces on the front panel. Remote control mode can be activated by writing value 1 in Modbus holding register 20.
Remote control mode disables all user interfaces on the front panel. Remote control mode can be activated by writing value 1 in Modbus holding register 20.
Temperature sensor
A temperature sensor (PT500 technology) is required to measure the ambient temperature. Sentera offers different types of compatible PT500 temperature sensors (see related articles below). These sensors are available in different enclosures: Room - probe - duct
LED indication
The ECH features an RGB LED status indicator. Its changes colour depending on the condition of the controller and the connected devices. As standard, green indication denotes perfect operation, while red light warns of issues. For further details, please refer to the product datasheet.
R-ABS enclosure
The enclosure is made of premium-quality r-ABS plastic. This material is exceptionally heat resistant, very tough and offers good protection against impacts. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture.
The ECH features an RGB LED status indicator. Its changes colour depending on the condition of the controller and the connected devices. As standard, green indication denotes perfect operation, while red light warns of issues. For further details, please refer to the product datasheet.
R-ABS enclosure
The enclosure is made of premium-quality r-ABS plastic. This material is exceptionally heat resistant, very tough and offers good protection against impacts. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture.
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