MDT heating actuator – Intelligent control for heating and cooling in KNX systems
The MDT heating actuator is the ideal solution for the precise control of electrothermal actuators and for efficient temperature regulation in KNX-based automation systems . It is available in the variants AKH-0400.03 (4-channel) , AKH-0600.03 (6-channel) and AKH-0800.03 (8-channel) and impresses with its high control accuracy, reliability and flexible application possibilities in residential, office and commercial buildings.
Key features
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Versatile control:
- Control of up to 4 actuators per channel at 24–230 V AC.
- Supports 1-bit PWM (pulse width modulation) or 1-byte continuous control variables .
- Direct control and regulation via KNX bus with precise temperature processing.
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Integrated PI controller for heating and cooling:
- Supports comfort, night, frost protection, summer and winter operation .
- All setpoint values are stored upon return of bus voltage.
- Flexible setpoint adjustment via 1-bit, 1-byte or 2-byte objects .
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High reliability and protection:
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Emergency operation in case of failure of cyclic control variables.
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Overload protection and fault messages in case of power failure.
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Securing protection for automatic movement testing of valve actuators.
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User-friendliness:
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Plain text diagnostics per channel (14-byte object) for easy monitoring.
- Extensive scene functions for individual heating and cooling profiles.
- Compatible with KNX visualizations and smart building solutions.
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:
- 24-230V AC, max. 500mA per channel.
- Inrush current: up to 5 A per channel.
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Power supply: KNX bus, typical consumption < 0.3 W.
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Assembly:
- DIN rail mounted device (2/3/4 DIN rail units, depending on the model).
- Wear-free triac outputs for quiet and long-lasting 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) or 2.5 mm² (stranded).
Applications
- Efficient control of heating and cooling systems in residential and commercial buildings.
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Scene-based automation for optimal comfort and energy savings.
- Seamless integration into KNX visualization systems and smart building solutions.
Advantages
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Production in Germany – quality certified according to ISO 9001.
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Long service life thanks to robust triac technology.
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3-year warranty on all MDT products.
Product information
Manufacturer part number: AKH-0800.03
Article number: SMH0210
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