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Mounting the AA-30
© 1994 Johnson Controls, Inc.
Order No. 445-020
Audio Amplifier (AA-30)
Fire Management Accessories Manual 445
Audio Amplifiers Section
Technical Bulletin
Issue Date 0394
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Summary of Contents for Johnson Controls Metasys AA-30
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Page 1: Table Of Contents
Audio Amplifiers Section Technical Bulletin Issue Date 0394 Audio Amplifier (AA-30) Introduction Page Description Installation Procedures Mounting the AA-30 Connecting the AA-30 Amplifier Adjusting the AA-30 Audio Gain Level 4-Wire Supervision for Audio Amplifiers © 1994 Johnson Controls, Inc. Order No. 445-020... - Page 2 2 Audio Amplifiers—Audio Amplifiers (AA-30)
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Page 3: Introduction
Introduction The AA-30 Audio Amplifier provides 30 watts of audio power compatible Description with 25 VRMS speakers. Speaker zone selection is performed by an XPC-8 transponder or M500CJ/M510CJ control module in IFC-1010/2020 systems. Speaker zones may be up to 30 watts each, but are limited to ten speakers per M510CJ control module employed. - Page 4 4 Audio Amplifiers—Audio Amplifiers (AA-30)
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Page 5: Installation Procedures
Installation Procedures The AA-30 mounts in a CHS-4L Chassis. Two AA-30s can be placed side Mounting the by side in a CHS-4L. The AA-30 may be mounted either in the same AA-30 cabinet as the AMG-1 or in a remote cabinet. See Figure 1 for more information on installing the AA-30. - Page 6 Step 1 Install the CHS-4L chassis in each row of the cabinet that will employ AA-30 audio amplifiers. For proper grounding of the AA-30 audio amplifiers to the cabinet, connect a grounding cable to one of the chassis mounting screws as illustrated.
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Page 7: Connecting The Aa-30 Amplifier
Figures 2 and 3 depict the wiring at the AA-30. Figure 2 identifies the Connecting the terminal assignments on the back board as well as the over all chassis AA-30 Amplifier layout. Figure 3 shows the termination assignments on the front board. Audio Amplifier Gain Adjust Audio Input and Output Connectors for Remote Mounting (See Figure 3.) Audio Input and Output Terminals for Mounting in the Same Cabinet (See Figure 3.) - Page 8 Nomally Open Trouble Contacts Backup Audio Input Signal 1 IN From Previous AA-30 P8, Terminal 10 or (Generally Not Used When AA-30 is Backup AA-30 P8, Terminal 7 Transponder Mounted) Backup Audio Input Signal 2 IN Low Level Audio Output 1 to Next From Previous AA-30 P8, Terminal 9 or AA-30, P3 Terminal 4, or AMG-1, P4, Backup AA-30 P8, Terminal 6...
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Page 9: Adjusting The Aa-30 Audio Gain Level
The Audio Gain Level multi-position rotary switch allows you to adjust Adjusting the the gain of the audio output signal to compensate for audio line losses. AA-30 Audio After you have made the correct adjustment, the AA-30 Audio Amplifier Gain Level produces its maximum rated output power at 25 VRMS. -
Page 10: 4-Wire Supervision For Audio Amplifiers
The amplified audio output circuit is not supervised if configured as AA-30 Amplifier Style Y (2-wire). Supervision is unnecessary, in most jurisdictions, if the Supervision amplified audio wiring is contained within an enclosure such as a Setup transponder. If the amplified (high level) audio wiring extends outside the transponder, it should be supervised. - Page 11 Notes Audio Amplifiers—Audio Amplifiers (AA-30)
- Page 12 Notes Controls Group FAN 445 507 E. Michigan Street Fire Management Accessories Manual P.O. Box 423 Printed in U.S.A. Milwaukee, WI 53201 12 Audio Amplifiers—Audio Amplifiers (AA-30)
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