The Apollo XP95 DIN-Rail Zone Monitor with Isolator (55000-812APO) is an essential device for managing fire detection zones within a Discovery or XP95 system. It powers and controls up to 20 Apollo Series 65 or Orbis fire detectors and provides key functionalities to ensure that the detectors are accurately monitored and any faults are quickly identified.

Key Features:

• Loop-Powered:

  • The DIN-Rail Zone Monitor is loop-powered, meaning it is powered directly from the fire alarm loop, eliminating the need for an external power supply and simplifying installation.

• Control of Up to 20 Detectors:

  • The unit is capable of controlling and monitoring a zone of up to 20 Apollo Series 65 or Orbis fire detectors, providing flexibility for large installations or more complex areas.

• Preset Analog Values:

  • The monitor is factory preset to return an analogue value of 16 when all detectors in the zone are in the quiescent state, and 64 when a detector changes to an alarm state. This allows for easy interpretation of zone status in the system control panel.

• Fault Detection:

  • The DIN-Rail Zone Monitor uses a 5.1k end-of-line resistor to monitor the cables for open and short-circuit faults. An analogue value of 4 is transmitted during fault conditions, enabling prompt identification of issues. Alternatively, an active end-of-line monitor can be used for more complex fault detection scenarios.

• Built-in Short-Circuit Isolator:

  • The monitor is fitted with a bi-directional short-circuit isolator, ensuring that the unit remains unaffected by short circuits on either the input or output loop. This minimizes disruption to the system in case of a fault, allowing unaffected sections to continue operating.

• Visible Short-Circuit and Alarm LEDs:

  • The device is equipped with LED indicators that display the status of the system, including short-circuit and alarm conditions. This provides clear, real-time feedback on the health and operation of the zone.

• Applications:

  • The DIN-Rail Zone Monitor with Isolator is suitable for use in both standard fire alarm installations and intrinsically safe (IS) applications when using the DIN-Rail IS Zone Monitor model (part number 55000-798).

• End-of-Line Monitoring:

  • The monitor supports both passive (via a resistor) and active end-of-line monitoring, offering flexibility in fault detection methods depending on system requirements.