VARIODYN D1 585305 DOM Digital Output Module

585305 is the Voice Alarm Digital-Output-Module (DOM) for the VARIODYN® D1 V1 Voice Rack system, serving as its central control element. It connects call stations, double final amplifiers, loudspeakers, and input/output modules while providing four independent audio outputs to drive amplifier channels and eight potential-free control contacts. The module operates on 110–230 V AC nominal and rated voltage via an IEC socket, with 24 V DC emergency and back-up power supply options.

Fuses F1 and F2 provide device protection, rated at 1.6 AT/250 V and 5 AT/250 V respectively. Audio functionality features four power amplifier inputs (PA), four backup inputs (REP), and AVC1–AVC4 for automatic volume control, each supporting up to two sensor microphones. Loudspeaker switching scales by variant: the DOM4-8 supports up to eight circuits (two relays per channel), while the DOM4-24 supports up to six switched circuits per channel (24 total). Compatibility includes call stations, amplifiers, loudspeakers, time synchronisation modules (TCM), contact-interface modules (CIM), service PCs, fire alarm control panels (FACP), and power amplifiers via TWI or main switch unit connections, with specific cabling and adapters noted for rear-panel and service interfaces. Wiring details are referenced in the installation manual.