Technichal Manual Heating Actuators AKH
MDT technologies GmbH •
51766 Engelskirchen
• Papiermühle 1
Tel.: +49-2263-
880 • Fax: +49
-2263-4588
• [email protected] • www.mdt.de
4
2 Overview
2.1 Overview devices
The manual refers to the following devices (Order number respectively written in bold letters):
AKH-0400.01
Heating actuator 4-fold, 2TE, 24 or 230V AC, MRDC
o
4 channels for electrothermic valve drives, for the maximum number of
electrothermic valve drives have a look at 6.5 Datasheet, detection of 230V AC
failure, 230V AC/24V AC short circuit detection of connected load
AKH-0800.01
Heating actuator 8-fold, 2TE, 24 or 230V AC, MRDC
o
8 channels for electrothermic valve drives, for the maximum number of
electrothermic valve drives have a look at 6.5 Datasheet, detection of 230V AC
failure, 230V AC/24V AC short circuit detection of connected load
Attention: Every actuator can be connected to 230V AC or 24V AC.
A mixture of both voltages forbidden!
2.2 Usage & Areas of use
The heating actuator can be connected to 24V AC or 230V AC, so it allows controlling electrothermic
valve drives with 24V AC or 230V AC. The heating actuator is available at the design of 4-fold or 8-
fold.
Integrated 230V AC failure detection as well as short circuit detection, for both voltage types, at the
load allows a high fail-safety. Additional an emergency mode can be adjusted, which gets active
when the cyclic control value fails.
The actuator can be controlled as well by a 1 Bit object as by a 1 Byte object. As special feature, the
controller contains of an integrated controller, which allows controlling the actuator directly by a
temperature value. The integrated controller contains of the 4 operating modes, comfort, night,
standby, and frost-/heat protection. The setpoints can be adjusted individual for the single operating
modes as well as for the heating and cooling mode.
A limitation of the control value, summer /winter mode as well as a protection of the valves
completes the range of service of the heating actuator.
