Section 1: Introduction ..................................................................................................................................................... 8
1.1: About This Manual ............................................................................................................................................................................................8
1.2: UL 864 Compliance...........................................................................................................................................................................................8
1.3: Related Documentation .....................................................................................................................................................................................8
Section 2: Overview .......................................................................................................................................................... 9
2.1: General...............................................................................................................................................................................................................9
2.1.1: Panel Compatibility ................................................................................................................................................................................9
Section 3: Product Overview.......................................................................................................................................... 11
3.1: ACM-24AT and AEM-24AT............................................................................................................................................................................11
3.2: ACM-48A and AEM-48A................................................................................................................................................................................11
3.3: ACM-16AT Series............................................................................................................................................................................................11
3.3.1: Control Modules ...................................................................................................................................................................................11
3.3.2: Expander Modules ................................................................................................................................................................................12
3.4: ACM-32A Series..............................................................................................................................................................................................12
3.4.1: Control Modules ...................................................................................................................................................................................12
3.4.2: Expander Modules ................................................................................................................................................................................12
3.5: Cabinet & Panel Hardware ..............................................................................................................................................................................12
3.5.1: Surface-Mount Backboxes....................................................................................................................................................................12
3.5.2: Flush-mount Backboxes .......................................................................................................................................................................13
3.5.3: Semi-flush-mount Backboxes...............................................................................................................................................................13
3.5.4: Additional Hardware ............................................................................................................................................................................14
Section 4: Design Considerations ................................................................................................................................. 15
4.1: Limits ...............................................................................................................................................................................................................15
4.2: Wire Runs ........................................................................................................................................................................................................15
4.3: EIA-485 Wiring Specifications........................................................................................................................................................................15
4.4.1: Receive/Transmit Annunciators ...........................................................................................................................................................15
4.4.2: Receive Only Annunciators..................................................................................................................................................................15
4.5: Cabinet Mounting of Annunciators .................................................................................................................................................................16
5.1: Installation Checklist .......................................................................................................................................................................................18
5.2: Connections and Switches ...............................................................................................................................................................................18
5.3: Mount the Cabinet or Backbox........................................................................................................................................................................20
5.4: Mount Annunciators and Expanders................................................................................................................................................................20
5.5: EIA-485 Circuit Connections ..........................................................................................................................................................................21
5.6: Shielding the EIA-485 Circuit .........................................................................................................................................................................21
5.8: Earth Ground ...................................................................................................................................................................................................22
5.9: Main Power Supply Connections ....................................................................................................................................................................22
5.10: Labeling Annunciators & Expanders............................................................................................................................................................23
5.12.4: Speaker Control Mode .......................................................................................................................................................................24
5.16: Testing the Annunciators ...............................................................................................................................................................................28
ACS Manual - P/N 15842:N3 5/4/2022
Table of Contents
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