VAR8-ACU and Variants - Product Description
Issue: 02 complete, approved
Page 3 of 44
Contents
1Overview ................................................................................................................................................... 5
2Router Functions ..................................................................................................................................... 8
2.1 Audio Inputs................................................................................................................................ 8
2.1.1 Mic/Line Inputs.................................................................................................................... 8
2.1.1.1 Paging Microphone Mode ........................................................................................... 9
2.1.1.2 Zoneable Fire Microphone Mode ................................................................................ 9
2.1.1.3 Fire Microphone (ALL-CALL) Mode ............................................................................ 9
2.1.1.4 Single Button Microphone Mode............................................................................... 10
2.1.1.5 Miscellaneous Input Mode ........................................................................................ 10
2.1.1.6 Remote I/O Unit(s) Mode .......................................................................................... 10
2.1.1.7 Unused Mode............................................................................................................ 10
2.1.2 Digital Voice Announcers.................................................................................................. 10
2.1.3 Music Input........................................................................................................................ 10
2.1.4 Mute Input ......................................................................................................................... 11
2.2 Audio Outputs and Line Driver Functions................................................................................. 11
2.3 Audio Input Priority and Override ............................................................................................. 11
2.4 Fades and Chimes ................................................................................................................... 12
2.4.1 Fades ................................................................................................................................ 12
2.4.2 Chimes.............................................................................................................................. 12
2.5 Surveillance Tone Detection and Generation........................................................................... 13
2.5.1 Detection........................................................................................................................... 13
2.5.2 Generation ........................................................................................................................ 13
2.6 Control ...................................................................................................................................... 13
2.6.1 Contacts............................................................................................................................ 14
2.6.1.1 Opto-Isolated Interface.............................................................................................. 14
2.6.1.2 Contact Functions ..................................................................................................... 15
2.6.1.2.1 Routing: Latching............................................................................................... 15
2.6.1.2.2 Routing: Non-Latching, Latent Routes .............................................................. 16
2.6.1.2.3 External Faults................................................................................................... 16
2.6.2 Permanent Routes............................................................................................................ 17
2.6.3 Remote I/O Units .............................................................................................................. 17
2.6.3.1 RS485 Connections .................................................................................................. 17
2.6.3.2 Remote I/O Unit Functionality Summary................................................................... 18
2.6.3.3 Analogue Inputs ........................................................................................................ 18
2.6.3.4 Digital Inputs ............................................................................................................. 18
2.6.3.5 Digital Outputs........................................................................................................... 18
3Network ................................................................................................................................................... 19
3.1 Network Operation.................................................................................................................... 19
3.1.1 Data Network ....................................................................................................................19
3.1.2 Audio Network...................................................................................................................19
3.2 Network Topology..................................................................................................................... 20
3.2.1.1 System Parameters................................................................................................... 20
3.2.1.2 Main Network Features ............................................................................................. 20
4Control and Indicators........................................................................................................................... 22
4.1 LCD Backlight Control .............................................................................................................. 23
5Fault Monitoring..................................................................................................................................... 24
5.1 Fault Indication ......................................................................................................................... 24
5.2 Viewing Active Faults from the Audio Control Unit................................................................... 25
5.3 Clearance and Acceptance ...................................................................................................... 25
5.3.1 Audio Control Unit’s Faults ............................................................................................... 25
5.3.2 Slave Unit’s Faults ............................................................................................................ 26
5.4 Fault Logging............................................................................................................................ 26
5.4.1 Audio Control Unit Fault Log............................................................................................. 26
5.4.2 Slave Unit Fault Log.......................................................................................................... 26
5.5 Fault Relay................................................................................................................................ 27
