Thursday, October 27, 2011

Fire Alarm Control Panels


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The control panel (fire station) is an integral component of fire detection and fire alarm program, which is intended to supply and supervise the function of other system components. It receives and processes signals from fire detection devices, establishes operating modes of the method triggers audible and light signals, but also can inform the remote alarm center and to shop data about events that occurred. By means of specialized software program control panel can be configured to react a particular way and to carry out certain functions in the new event.

The control panel is powered by the AC network, but demands a backup power supply that offers the system with power cuts. Most generally it is secured by two pieces of 12 V batteries. Additional power supply can be placed in the panel itself or to be configured as a separate unit, which is appropriate in particular for bigger systems with substantial overall consumption.

4 access levels are on the market when operating with fire detection panel, enabling distinctive rights to distinct operators to monitor, configure and alter method settings. Access Level 1 is with the smallest rights, whilst in level four all feasible operations are permitted. Log in into a given level is protected by password, which should be diverse for distinctive levels if other operators are allowed to work with the system.

Fire station indicate the status of FDS right after processing the signals from the devices in the program defined by developed algorithms. According to most of todays standards scanning, signal processing and decision creating for fire alarm signaling ought to take place in no significantly more than 10 seconds.

The following are doable modes of the technique:

• Normal state (Standard / Quiescent condition)

• Fire (Fire)

• Failure (Fault)

• Exclusion devices / functions (Disablement)

• Verification (Test)

Fire station state could possibly be a mixture of two modes, except the initial. Modes are indicated by light indicators in green (standard), red (fire) or yellow ("Harm"), accompanied by a short text on their individual conditions.

In regimes "Fire" and "Harm", audible alarms can be triggered, derived from the panel itself (built-in buzzer) or included in the system of sirens / bells fire. It could possibly be the identical for fire and technical failure. If the technique consists of strobe / flash lamps, they are also triggered. Sound and lighting equipment can be excluded by the corresponding button for attenuation, which becomes active following the entry into any of the access levels.

For control panels that assistance light indication of areas, zone / zones in alarm mode are indicated by the LED indicators on the panel. If the fire station has a display, the zones in alarm state are indicated by text message. When is "Fire" mode, the panel goes back to regular function soon after setting the "Reset", which in most instances is active in the push-button out there for access level 2 and greater.

The control panel can send alarm signals to a remote observation center - security provider or Fire Department. This is done through many enhancements - dialer, modem or Ethernet module. These devices use distinct methods for data transfer - modem dialer use the phone line, Ethernet module - a neighborhood personal computer network or the Web.

In order to check the method for alarm received - regardless of whether there is really a fire or malfunction, or a false bedding, there is an alternative for specific sub-modes - time delay and confirmation of alarm.

In sub-mode "time delay", there is a time delay for the technique going in "Fire" mode, in order to carry out a technique check and only then light and sound alarm devices are activated. In case of fire detected by human, fire alarm can be activated by pressing 1 of the manual fire detectors or by operator with lowest access level.

Sub-mode "Confirmation of alarm" enables bedded in a detector method to be confirmed by the very same or a distinctive detector in the area and only then to put the fire detection technique in "Fire" mode. This sub-mode is also doable in the "cross zoning" approach (crossing of two cable lines with detectors), exactly where the "Fire" mode is activated after the simultaneous or within a specific range of bedding devices on both lines.

Reducing false bedding is attainable with the use of "day" and "night" modes by which the detection technique is assigned a various sensitivity in both sub-modes. In "day" mode detectors are less sensitive than in the night, since quite a few activities conducted for the duration of the day can trigger false alarms.

Modern day control panels possess many characteristics, some of which are mandatory for all. The capacity for selections setting is 1 of the principal aspects that makes appropriate for use in several size and application web pages, and is also a primary mean to increase their competitiveness.

1 comment:

  1. Do you think it to be wasteful for all small buisnesses to be obliged to own expensive fire alarm panels and systems by law? I think that everyone should have some form of fire safety in place, but the level that the state requires is rather excessive, especially when people pay £2k+ for a system that is only meant to guard a property with 3 employees

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