Wiring schematic diagramSet up correctly according to the following wiring schematic diagrams and “Wire type anddistance”.Door (Door Opener) 2 * 4Door (Door Opener) 1 * 4PBX* 3Door station 2Door station 1 *1(Non polar) (Non polar)Main monitor stationTerminal box(4-conductor wiring)(Non polar)(Non polar)(Non polar)Power plug(100 – 240 V AC)You can also connectan optional lobbystation for apartmentcomplexes.* 2Optional equipment(Refer to pages 42-43 in the Operating Instructions.)*1 For VL-MW250BX users: The door station is optional (not included).* 2 Connecting an optional lobby station for apartment complexesBe sure to perform the following to ensure proper operation:LConnect to terminal D1/D2 on the main monitor station.LAfter connecting to the main monitor station, change the setting of “LOBBYCONNECTION” to “YES” using the main monitor station. (Refer to page 38 in theOperating Instructions.)* 3 For information about compatible PBXs, refer to page 4 in the Operating Instructions.* 4 Connecting a door openerLBefore connecting to a door opener, make sure that:– S1/S2/S3/S4 terminal: Normally open/Actively short– The door opener is less than 30 V AC (1 A), 24 V DC (1 A).– S1/S2/S3/S4 terminal on the main monitor station is not the power supply to the dooropener. If the door opener needs a power supply device to connect to the main monitorstation, contact the dealer where you purchased the door opener.LThe door opener for the door station connected to terminal D1/D2 must beconnected to terminal S1/S2. The other door opener for the door station connectedto terminal D3/D4 must be connected to terminal S3/S4.LYou can connect up to 2 door openers to the main monitor station. If the main monitorstation is connected to a PBX, one of the 2 door openers can be connected to the PBXand operated from the PBX extensions.Note:LConnect the plug to the power outlet which is easily accessible. In case the plug is noteasily accessible, you should install the main disconnect device near the product. The maindisconnect device needs to be certified or comply with an appropriate standard. (See “Toconnect the plug to the power outlet which is not easily accessible”.)LWhen you move the main monitor station, make sure the PBX is disconnected.LThe door opener wiring schematic diagram is only an example. Refer to the wiringinstructions provided with your door opener and PBX for details.Wire type and distanceLWire (between the main monitor station and the door station):Type Distance Loop resistanceGeneral cable CAT-3 Maximum 50 m 10 Ω or lowerGeneral cable 22 AWG (ø 0.65) Maximum 100 mLWire (between the main monitor station and PBX):Type: General cable CAT-3 or 22 AWG (ø 0.65)Distance: Maximum 100 m