DESCRIPTIONS. Siemens FS-250

GENERAL DESIGN FEATURES

Environmental

The FS-250 panels and its subassemblies are suitable for use in a dry, interior or protected location.

Power Limiting

The AC power and battery wiring are not power limited. All other circuits leaving the control panel are power limited, provided the proper installation rules are maintained.

Ground Fault Detection

The control panel provides system ground fault detection and is annunciated as a trouble condition on the system. In addition, each addressable loop circuit has its own ground detection circuitry and indicator.

NAC Operation

The notification appliance circuits are commanded and controlled by a mircroprocessor to provide more versatility than in a total hardware system.

• Output Sounding Patterns - The notification appliance circuits are operable in different sounding patterns. Any circuit is selectable to any of eight software-generated patterns or continuous sounding. For convenience, three of the patterns are preprogrammed for March

Time, Temporal, and Siemens SYNC Protocol.

• Audible Silence Inhibit - In addition to designation of water flow zones, the entire control panel may be programmed to inhibit audible silence for 0, 1, 3, or 6 minutes from the last alarm. System reset may also be inhibited.

Transient Protection

Transient protection devices are provided to meet UL864 requirements.

Security Features

Processor control and addressing allow inclusion of several functions to assure security and proper programming of the system.

Multi-level password protection of programming functions prevents unauthorized configuration changes.

Device type supervision: If the type reported by an addressable detector or module does not agree with the configuration, the system reports a trouble.

Device address supervision: The system checks that all configured devices on the addressable device circuit and the Serial Interface Circuit responds to an address poll. If a configured device is missing, the system reports a trouble. The system also polls unused addresses periodically. If a device responds to such a poll of a non-configured device, the system reports a trouble. Two devices addressed the same also cause a trouble to be reported.

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