Section 10 – Access Control10-11DS2RXDDS1TXDRS485E2E3E4E5E6E7E8E9TERMINAL STRIP TB1FOR RS-485 BUSCONNECTIONSJUMPER E1(REMOVE JUMPER TODISCONNECT RS-485TERMINATING RESISTOR)GND+ 12VCOMCOM +(BLK) 1(YEL) 3(RED) 2(BLU) 4E1TB3BATTERY12 +12 +3 "0"4 "1"5 "A"6 "B"CUT R8TB2BATTERY AREA12V, O.8AHTB1E10E11+C5D4D5D7D6D8D10C7C6C3C4U2U1D2R7D3R8D1D11Figure 10-4: Modifying ACIU for Operation with Dorado 7401 or 7901 Card ReaderUsing the Operating Panel for Access ControlAccess can be controlled not only by card/key readers, but also by the FOCUS operating panel. Theperson requesting access must enter a valid 6-digit code to gain entry. Either of three methods can beused:• Using an ACIU to control power to a 12-volt door strike.The control unit commands the ACIU to have its on-board battery provide the 12V potential forreleasing the door strike when a valid code is entered at the operating panel. No connection isrequired between the operating panel and the ACIU. The only ACIU connections that are neededare to the RS-485 bus and to the door strike. The operating panel is linked to the ACIU throughprogramming.• Sharing an ACIU with a card/key reader.An operating panel is linked to the same ACIU as a card/key reader, so that either the card/keyreader or the operating panel can be used for access control. In this arrangement, a person whoforgot his card can use the operating panel to gain access. Note that the operating panel can onlybe installed indoors.• Using a BA Access output point to control the power to the strike.The control unit commands the BA Access output point to turn on when a valid code is entered atthe operating panel. When turned on, the BA Access output point closes the circuit to a separatepower source, thereby applying power to the door strike.Installing the Operating Panel for Use With Access ControlIf an operating panel is being used for access control, it must be assigned to communication Group 0.Install the operating panel in the usual manner.Where an operating panel is being used for access control with an ACIU, its communication Unit number onthe RS-485 bus must coincide with the communication Unit number of the ACIU. An operating panel beingused for access control (Communication Group 0) becomes locked out during the period that any otheroperating panel at communication Group 0 becomes activated, and vice versa.
