ATU

7200 SERIES RDU/ATU RELEASING DEVICE UNIT/ ABORT TIMER UNIT RDU ATU DESCRIPTION The Releasing Device Unit (RDU) provides the 7200 Series fire alarm control panel with the ability to control the operation of up to ten (10) fire suppression systems and also provides communication with all sensors and control modules used for operation of these systems. It contains a 20-character display to indicate the state of any of its suppression systems. The RDU features a signaling line circuit that can accommodate 99 analog sensors and 98 monitor and/or output modules (AMM-2/-4, AOM-2). It also provides an RS-485 circuit for connection of up to 31 remotely located Abort/Timer Units (ATU). Sensors can be cross-zoned or configured in a counting zone for automatic activation of a suppression system. Monitor modules may be used in conjunction with manual release stations, abort switches and “squirt” switches for reactivation of a discharge control. Control modules can be configured for any of the following: · Notification Appliance Circuit · Prealarm interlock · Releasing · Prerelease interlock · Time-Limit-Cutoff interlock · Release interlock Compatible solenoids for use with the control modules used for releasing are: · Skinner Models LV2LBX25, 73218BN4UNLVNOC111C2, 73212BN4TNLVNOC322C2, 71395SN2ENJ1NOH111C2, 24 VDC. · Asco Models T8210A107, 8210G207, 24 VDC A “DISCONNECT” switch is provided for the circuit and allows the system to be serviced and/or tested without activating any releasing devices. LEDs mounted on the RDU include a red “ALARM” LED and yellow “TROUBLE” LED for its signaling line circuit. A pluggable terminal block is provided on the RDU for the connection of all circuits. This terminal block will accommodate wire sizes up to 12 AWG. The Releasing Device Unit (RDU) is a full-size unit and mounts in any available module position. The Abort/Timer Unit (ATU) is an addressable abort switch containing a display for an individual suppression system. Upon suppression system activation by either manual or automatic means, the display indicates the time remaining until suppression discharge. The ATU may be remotely located and mounts on a conventional 3-gang electrical box. TECHNICAL AND ORDERING INFORMATION Part Number 1100-1224 1100-1223 Model RDU ATU Supervisory Current 0.065 amp. 0.014 amp. Alarm Current 0.085 amp 0.030 amp. Description Releasing Device Unit Abort Timer Unit 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 9020-0463/Ver. 1.1