MDT heating actuator – Efficient temperature control for your KNX building automation
The MDT heating actuator offers a precise and energy-efficient solution for controlling electrothermal actuators in KNX systems . With variants for 4, 6, or 8 control loops – AKH-0400.03 , AKH-0600.03 , and AKH-0800.03 – the actuator enables comfortable temperature control and ensures an optimal indoor climate in residential and commercial buildings.
Key features
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Flexibility and compatibility:
- Control of up to 4 actuators per channel at 24–230 V AC.
- Supports 1-bit PWM (Pulse Width Modulation) and 1-byte continuous control variables .
- Direct temperature control via the KNX bus with compatible sensors.
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Integrated temperature control:
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PI controller for precise heating and cooling control.
- Supported operating modes: Comfort, Night, Frost Protection and Summer/Winter operation .
- Automatically saves setpoint values when bus voltage returns.
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Reliability and safety:
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Emergency operation in case of failure of the cyclic control variables.
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Overload protection and fault messages in case of power failure.
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Securing mechanism protection for the long-term functionality of the actuators.
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Easy to use:
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Plain text diagnostics per channel via 14-byte objects.
- Individual customization via scene functions and KNX visualizations.
Technical details
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Number of exits: 4 (AKH-0400.03), 6 (AKH-0600.03), 8 (AKH-0800.03).
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Switching capacity:
- At 24 V AC: max. 500 mA per channel.
- At 230 V AC: max. 500 mA, inrush current up to 5 A.
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Power supply: KNX bus, typical consumption < 0.3 W.
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Assembly:
- DIN rail mounting (2/3/4 modules, depending on the model).
- Wear-free triac outputs for quiet and maintenance-free operation.
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Environmental conditions:
- Operating temperature: 0 to +45 °C .
- Protection class: IP20 – suitable for dry indoor areas.
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Connection:
- Screw terminals up to 4 mm² (solid wire) or 2.5 mm² (stranded wire).
Applications
- Precise control of heating and cooling systems in residential and commercial buildings.
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Energy-efficient control through scenes and time-based control.
- Integration into KNX visualization systems and smart home solutions.
Advantages
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Production in Germany – Quality according to ISO 9001.
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Long-lasting thanks to triac technology with wear-free switching behavior.
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3-year manufacturer's warranty for maximum reliability.
Product information
Manufacturer part number: AKH-0400.03
Article number: SMH0208
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