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1、SWL25 Room-Selector Installation KI-1200A Panels Rauland-Borg Corporation ? 3450 West Oakton Street, Skokie, Illinois 60076-2951 ? (847) 679-0900 General Information The SW25 offers room selection only (no call-in signal). Description The SWL25 also provides a call-in signal. When a call The SW25 an
2、d SWL25 panels are used with all Director is made from a switch in the classroom, an LED lights next Series sound and communications systems. These panels to the corresponding number on the panel and a tone alerts let you selectively connect up to 25 rooms to either the the console operator to the c
3、all. The LED lamp remains lit program or the intercom channel. There is also a center until the operator answers the call, at which time the lamp OFF position. Color-coded directions identify each chan- automatically shuts off. nel: green for program, and orange for intercom. Installation Cabling Re
4、quirements i./ Systems using the SW25 (no call-in signal) require one twisted pair in a shield for each speaker station. Systems using the SWL25 (call-in signal) require one additional conductor within the shielded cable for each speaker station. Use #22-AWG solid or stranded conductors with 22-AWG
5、drain wire. If you re using insulation-piercing connectors, the outside diameter of any wire, including its insulation, must not exceed 0.095”. Cable Routing and Strain Relief Route the cables as shown in the diagram. Secure them with three plastic cable ties through the guide loops in the rear brac
6、ket. Leave service loops in the cables used to interconnect the equipment panels and at least a one-inch slack in each cable. This permits reconnection when required. Connect the twisted pair to terminals D and E, and the drain wire to terminal G for each line circuit. On Model SWL25 only, connect t
7、he third conductor for calf-in to terminal T(Trigger). Connector or Bus Wiring L ,. /. There are three terminals (OFF, A, 0 at the ends of the switchbank that will be interconnected in a factory-wired system. These interconnections provide loop-through for common functions, especially between multip
8、le switch- banks. For wiring details, read the instruction manual for the proper program and intercom equipment panel. When you re wiring to these end terminals, you may need to cut slots in the connector shells for loop-throughs between switchbanks. Recommended Terminations Insulation-piercing conn
9、ectors are the fastest, most re- liable way to terminate wire to the switchbank. These connectors must be ordered separately. Order one SK-2522 Connector Kit for each switchbank. The kit contains 25 four-terminal connectors for 22-AWG wire. The attached manual, KI-1564, tells how to install these co
10、nnectors. Alternative Method #I Modified wire wrapping may be used to terminate 22- or 24-AWG solid conductors. Strip back wire about lb” and use a wire-wrapping tool that provides one complete turn of insulation around the terminal pin. This modified wire wrap provides the required strain relief. A
11、lternative Method #2 Crimped connectors may be used where there is a mixture of wire gauges (18-24 AWG) in the system, or where preferred. Multiple-gauge crimped connectors and an adapter shell are required for this termination method. Order one CTA25 Terminal Adapter Kit for each switch- bank in th
12、e system. The kit contains 25 four-terminal adapter housings and 100 crimp connectors. Hand Tool G2501 (or the older G317A) is required to crimp the connectors onto the wires. Strip away about 1 I? of the cable sheathing and shield, then strip the individual wires about kiP. Crimp each terminal onto
13、 a wire using Molex Model HTR-2445-A 91988 Rauland-borg Corporation . Printed in U.S.A. Page 1 of 4 Orig. lo/87 Rev. 4/88. 2d Printing 12/95. RadioFans.CN 收音机爱 好者资料库 SW25 a reliable connection cannot be made using another tool. Insert each crimped terminal into an adapter housing. Special Applicatio
14、ns It is possible to modify the panels OFF and C buses for special applications. For example, you can isolate the OFF lines to prevent the distribution of the ALL-CALL function to the isolated remote speaker lines. To access the buses: Carefully remove the front dress panel by removing its two finis
15、h screws and pulling it off. Then remove the eight small Phillips screws on the front of the sub-panel and and the two hex-head sheet-metal screws holding it to the rear of the chassis, and pull it off (you will have to spread its sides a bit to clear the PC board). Carefully spread the two main PC
16、boards apart (they are joined at one edge by multiple wires). The OFF bus is a small PC board that is perpendicular to the board with the selector switches. Note that each switch is connected to a trace on either side of this bus board. Cut the traces as needed, and make any connections to the solde
17、r pads on the bus board. The C bus conductors can be easily cut with a sharp knife to isolate the C lines for multiple-master operation. Use the low-numbered switches (1,2,3, etc.) for master stations. Make a l/32” cut through the top and bottom circuit board conductors where the split is needed. Ma
18、ke the C bus connections for low-numbered switches by soldering a pair of wires to the two pads provided at the upper left corner of the circuit board (as viewed from the front). Make the Cbus connections for the other side of the split to the regular C terminal pins. To operate with multiple-channe
19、l remote stations, you must split the C bus and completely cut both sides of the OFF bus. Pm- 1987 S WL25 Units: If you change a silicon-controlled rectifier (Rauland Part No.ETS008), make sure that the associated R2 is 330 ohms. Interconnections There are certain restrictions and specific interconnec- tions to be made, depending upon the associated modules used in the system. For more details, read the instructions provided with that equipment. RadioFans.CN 收音机爱 好者资料库 SW 25 SWITCHBANK KC1334-A P I / I I I I I I P I 1 I I I/ ( SWL 25 SWITCHBANK KC1335-B - N-r 1 i I
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