Specifications

Alto 818 Installation and Operation
vi P/N 66109074001 Rev. D
Section 2: System Description
2.1 Alto 818 Access Control Unit ................................................................................................ 2-4
2.1.1 Electronics .......................................................................................................... 2-5
Lithium Battery .................................................................................................... 2-5
Main PCA Switches............................................................................................. 2-6
LED Panel ........................................................................................................... 2-6
MSM Auto Sensing PCA ..................................................................................... 2-7
2.1.2 ACU System Interface ......................................................................................... 2-7
Power (P1) .......................................................................................................... 2-7
Relays ................................................................................................................. 2-8
20 mA ................................................................................................................. 2-8
Host .................................................................................................................... 2-8
Terminal ............................................................................................................... 2-9
Annunciator ......................................................................................................... 2-9
RS-485 ................................................................................................................ 2-9
Sensors ............................................................................................................... 2-9
2.2 Power Modules ................................................................................................................... 2-10
2.2.1 SE 3708CU / SE 3718SU Power Modules with Backup Batteries ...................... 2-10
2.2.2 SE 3018S/ SE 3018-2 Power Modules .............................................................. 2-12
2.2.3 SE 3708C Power Module with Backup Batteries ................................................ 2-13
2.2.4 Alarm-Saf Power Supply/Battery Charger Model AS/PS5-BFS-24-UL ................ 2-13
LED Indicators ................................................................................................... 2-13
Fuses ................................................................................................................ 2-14
Backup Batteries ............................................................................................... 2-14
Power Supply/Battery Enclosure ....................................................................... 2-15
2.2.5 Power Inserter ................................................................................................... 2-15
2.3 Terminal, Host and Printer ...................................................................................................2-16
2.3.1 Terminal............................................................................................................. 2-16
2.3.2 Host Computer .................................................................................................. 2-16
2.3.3 Printer ............................................................................................................... 2-16
2.4 SE 778-A Annunciator/Control Module ................................................................................ 2-17
2.4.1 Latched Contacts and Indicator ......................................................................... 2-18
2.4.2 Control Contacts and Indicators ......................................................................... 2-18
2.4.3 Station Switch and Indicators ........................................................................... 2-18
2.4.4 Remote Station ................................................................................................. 2-19
2.5 SE 774-A Multiple Switch Monitor (MSM)............................................................................ 2-20
2.6 Communication Interfaces ................................................................................................... 2-22
2.6.1 CI-1 Communications Interface .......................................................................... 2-22
2.6.2 CI-8 Communications Interface .......................................................................... 2-23
2.7 Analog Proximity Sensors ................................................................................................... 2-24
2.7.1 Proximity Sensor Operation ............................................................................... 2-24
2.7.2 Proximity Sensor Models .................................................................................. 2-24
SE 2814/15 Proximity Sensors.......................................................................... 2-24
SE 2854/55 Medium Range Sensor ................................................................... 2-25
SE 2804 Compact Sensor ................................................................................. 2-25