HomeWorks Technical Reference Guide International Edition - Lutron

Wallbox Closure InterfaceThe Wallbox Closure Interface (model HWI-WCI)provides seven contact closure inputs and installs in astandard European wallbox. The HWI-WCI interfaceswith low-voltage switches to provide an alternativelook from a HomeWorks® keypad. The contact closureinputs are programmed using the HomeWorks software.E N V I R O N M E N TAmbient temperature: 0-40°C, 32-104°F, 0-90%humidity, non-condensing. Indoor use only.C O N N E C T I O N T O P R O C E S S O RHWI-WCI link wiring may be in a daisy-chain, star orT-tap configuration. Each home run on a link may beup to 305m (1,000 feet) and may contain up to 10HWI-WCI devices. The total length of wire on that link(all home runs) may be up to 1220m (4,000 feet). 32WCI devices may be placed on each processor linkconfigured as a keypad link in the HomeWorkssoftware. An auxiliary power supply may be requireddepending on the total current draw of all devices onthe processor.C O N TA C T C L O S U R E I N P U T SHWI-WCICOMPONENTSVerify compatibility of external equipment. The inputclosures are intended for use with equipment thatprovide outputs in the form of dry contact closures.The HWI-WCI is for use with low-voltage switchesonly. Switches rated for high-voltage applications maynot be used. The input closures may be used withground-referenced, solid-state outputs if the outputshave an on-state saturation voltage of less than 2 VDCand an off-state leakage of less than 50 µA. Drycontact or solid-state outputs must be capable ofswitching 15 VDC at 10 mA. The outputs must stay inthe closed or open states for at least 40 msec in orderto be recognized by the keypad.7.22 www.lutron.com