HRC3.2 Room controller

TopologyManagement system6314z01IPPSUAutomation levelSwitch/RouterKONNEX TP1N...Room controllerIP/KNXN1 N2 N50PSUPower supplyPSUIP/KNXN51KONNEX TP1Field levelAC 24 VRS485R...Room devicesMMR1RnHardwareinputs/outputsValve actuatorFanBlindsLightingBellDoor openerSwitchEngineering notes• A single transformer with an output voltage of AC 24 V+/– 10% (SELV extra lowvoltage) is required for the room controller power supply.The transformer rating must be sufficient for− the room controller and associated 12 V electrical consumers (all room busdevices, DC door opener, DC signaling lamps, max. 30 VA)− all electrical loads connected to the 24 V Triac outputs• A line coupler from the KNX range is required after every 120 room controllers. Inpractice, however, a line coupler needs to be connected after approximately 50rooms, because the maximum cable length is 1000 m, and the cable length betweenrooms is typically 20 m.• The room controller must be installed in a control panel or covered enclosure, whichcan only be opened with a key or tool. Adequate air circulation must be ensured.• The relevant technical, and health and safety regulations must be observed,including local electricity company regulations applicable to connection of devices tothe electricity network.• The management level PCs must be protected with a UPS (uninterruptible powersupply).• A mechanical safety lock must be provided to allow the doors to be opened from theoutside in extreme emergencies.6/12Siemens HRC3.2 – Room controller CM2N6314enBuilding Technologies 01.09.2008