7200 SERIES DSU DUAL SIGNAL UNIT DESCRIPTION The Dual Signal Unit (DSU) provides the 7200 Series fire alarm control panel with a four (4) ampere auxiliary power supply in addition to two (2) notification appliance circuits. The notification appliance circuits may be configured as Class A, Style Z, or Class B, Style Y. The notification appliance circuits are overcurrent protected, and may be individually programmed to operate in response to alarms from any initiating circuit, addressable initiating device, or group of circuits. The notification appliance circuits provide 1.75 amperes each. The auxiliary power output is likewise 1.75 amperes with total power for all circuits combined not to exceed four (4) amperes. The auxiliary power output is jumper-configurable as resettable or non-resettable Apluggable terminal block is provided for the connection of all circuits. This terminal block will accommodate wire sizes up to 12 AWG. The Dual Signal Unit (DSU) is a full-size unit. It contains an addressing switch and a “NORMAL - OFF” disconnect switch for each notification appliance circuit. LEDs mounted on the DSU include: LED Green Green Yellow Yellow Yellow Designation “AC POWER” “DC POWER” “TROUBLE NOTIFICATION 1" “TROUBLE NOTIFICATION 2" “BATTERY FAULT” Function Indicates that AC input is present. Indicates that power supply is functioning. Indicates trouble in Notification Appl. Circuit 1. Indicates trouble in Notification Appl. Circuit 2. Indicates low or missing battery. TECHNICAL INFORMATION Supervisory current Alarm current AC Input Notification appliance circuit output Auxiliary power output .025 amp. .075 amp. 110/120 VAC, 50-60 Hz, 2 amp. 220/240 VAC, 50-60 Hz, 1 amp. 1.75 amps./circuit 1.75 amps. @ 24 VDC ORDERING INFORMATION Part No. 1100-1327 1120-0495 Model DSU XFMR Description Dual Signal Unit Transformer, 120/240 VAC (Order separately) Specifications are provided for information only, are not intended to be used for installation purposes, and are believed to be accurate. However, no responsibility is assumed by Fire Control Instruments, Inc. for their use. Specifications subject to change without notice. © 1997 All Rights Reserved 16 Southwest Park, Westwood, MA 02090 USA TEL: (781) 471-3000 FAX: (781) 471-3099 An ISO 9001 Certified Company 9020-0312/Ver. 1.6