The MDT Heating Actuator with integrated temperature controller receives KNX/EIB telegrams and controls up to 8 independent electrical outputs . Each channel has its own LED indicator. \n \nEach channel supplies up to 4 electrothermic valve drives and can be parameterized individually via ETS. The channels are controllable with PWM (1Bit) or 1Byte telegrams. The integrated temperature controller manages the actuating value given by external KNX temperature sensors. The temperature controller offers comfort-, night-, frost protection- and summer- /winter- operation. \n \nThe MDT Heating Actuator detects mains voltage failure and has emergency operation if the cyclic telegram is missing. Additionally they provide objects for heating request and cyclic movement of the valves. \n

FEATURES

\n- Production in Germany, certified according to ISO 9001 \n- Extensive function extension \n- Each channel controls up to 4 electrothermic valve drives (230VAC) \n- Controllable with 1Bit (Switching/PWM) / 1Byte actuating variable or direct control with temperature value via KNX bus \n- Integrated PI temperature controller (Heating and Cooling) \n- Given value is stored at voltage failure \n- 1Bit +/-, 1Byte or 2Byte absolute object to set the given value \n- Comfort-, night- and frost protection. Summer-/winter operation \n- Emergency operation if cyclic actuating variable fails \n- Short circuit detection of connected load \n- Detection of 230VAC mains voltage failure \n- Objects for heating request and cyclic movement of the valves \n- Comprehensive scene functions \n- Minimum flow temperature \n- Diagnostics for each channel with 14Byte plain text object \n- Quick application download (long frame support for ETS5) \n- 3 years warranty \n

TECHNICAL DETAILS

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Number of outputs	4
Output switching current:
24VAC and ohmic load	500mA
230VAC and ohmic load	500mA
max. inrush current**	5A
External switching voltage	24-230VAC
Maximum load:
Number of electrothermic valves*	230VAC: 4 each channel \n24VAC: 3 each channel
Output life expectancy	Triac output, wearless
Specification KNX Interface	TP-256 with long frame support for ETS5
Available application software	ETS 4/5
Permitted wire gauge:
Screw terminal	0,5 - 4,0mm² solid core \n0,5 - 2,5mm² finely stranded
KNX busconnection terminal	0,8mm Ø, solid core
Power supply	KNX bus
Power consumption KNX bus typ.	<0,3W
Operation temperature range	0 to + 45°C
Enclosure	IP 20
Dimensions MDRC (Space Units)	2

\n* depends on manufacturer. Inrush current for 4 electrothermic valves has to be < 1A each electrothermic valve \n** every group of four outputs