Tree Tech Model AN
The Event Annunciator model AN is a microprocessor based device used to indicate events from dry contact signals generated by one or more Tree Tech IED modules connected over a common communications network.
 
As a centralized unit, the AN Event Annuciator works in conjunction with Tree Tech DM Series data acquisition modules that communicate together using the built-in networking features common to all Tree Tech intelligent devices. This networked configuration is ideal for applications with decentralized signals where the cabling and ducting costs make projects unfeasible. The end result is a single twisted pair cable can replace more than 400 wires.
 
Key Features

• Up to 400 digital inputs (the number of dry contacts is limited by the number of model MD1 Digital Input Modules). N.O. or N.C. contacts are configurable through the front panel or via PC based software.

• Up to 2 outputs for each digital input, also configurable via front panel or software in N.O. or N.C.

• Indication of up to 3 simultaneous events on an alphanumeric liquid crystal display with high resolution and backlight.

• Two (2) independent and insulated universal power inputs at 85-265 Vdc or Vac

• User defined alarm messages with 2 lines of 16 characters each

• 4 ISA standard signalization sequences configurable via front panel or software in ISA1, ISA 1B, ISA2A, or ISA2C

• Reduced dimensions (144 X 144 X 125 mm)

• Internal timer with indication of hours, minutes, seconds, and dates in day/month/year and days of the week

• Optional input for external GPS

• Output for the signalization of internal system failure detected during the self-diagnostic procedure.

• RS-232 output to configure the Annunciator and edit event texts.

• 14 keys on the front panel for navigation;

• RS-485 serial communication with Modbus RTU protocol for networking with other supervisory or monitoring systems.