Fire Alarm Annunciator Model 5235 User Manual

Posted : admin On 12/26/2021
  1. Fire Alarm Annunciator Panel Location
  2. Fire Alarm Annunciator Panel Definition
  3. Fire Alarm Annunciator Panel Troubleshooting
  4. Fire Alarm Remote Annunciator

To sort manuals, click on the column heading (Title. Addressable Fire Alarm Control Panel: 5235 Remote Annunciator for 5208: 151237: Conventional Fire Alarm Accessories. LS10182-000GE-EManualCELL-MOD: Fire Alarm Digital Communicators: Central Station Monitoring List. 4100ES, and 4100U series fire alarm control panels Also compatible with Simplex legacy panel model series 4002, 4020, 4100, 4120, and Universal Transponders (UT) Supervised RUI (remote unit interface) communications require a single, twisted, shielded wire pair to the fire alarm control panel (power is supplied via a second wire pair).



PFC-4410RC • 5403550 • REV Q • 11/12

Lamp Test

When the panel is in a Normal Condition, pushing the two top buttons will illuminate all of the LED's and display for

Fire Alarm Annunciator Panel Location

approximately one second.

Remote Annunciator Model RA-4410RC Operation

Red LED’s:

Initiating Device Circuits Active (4)

Notification/Release Circuits Active (4)

Common Alarm (1)

Green LED’s: AC Power

Yellow LED’s: Initiating Device Circuits troubles (4)

Output Circuit Troubles (4)

Supervisory Initiating Zone (4)

Supervisory Bell Output Active (4)

(1) each: Sup 1/Abort, Supervisory 2, Power Trouble,

Supervisory Trouble, System Trouble, Ground Fault,

Fire Alarm Annunciator Panel Definition

Pre-Discharge/Discharging, Alarm Silenced

The appropriate LED flashes to indicate a change of status on the panel. A trouble or supervisory condition will flash the appropriate

Yellow LED indicating the location of the condition. If any outputs are programmed as TROUBLE or SUPERVISORY BELL, that

Yellow output LED will flash indicating the output is activated. Pressing the BUZZER SILENCE button on the panel changes the

flashing zone Amber LED to steady on and turns the flashing Yellow output LED off.

An alarm condition will flash a Red LED indicating the zone in alarm and any outputs mapped to that zone that have activated.

Pressing the SIGNAL SILENCE button changes the flashing Red Zone LED to steady on and the flashing Red Output LED mapped

to that zone off unless the output is programmed as RELEASE. In addition, the Yellow ALARM/ SILENCE LED will light.

Any zone programmed as WATERFLOW is considered non-silenceable so the signal and buzzer silence buttons will have no

effect on the flashing zone and output LED's. A buzzer on the annunciator sounds for any trouble condition. When the panel

has a trouble or supervisory condition, pressing the SILENCE/LAMP TEST button silences the condition at the panel and all

annunciators. When no non-silenced trouble or supervisory conditions exist, pressing the SILENCE/LAMP TEST button can be

used to test the LED's.

The release panel supervises and communicates with the annunciator via separate connections for the RS-485 communication and

24VDC power requirements of the RA-4410RC. Separate cables should be used for power and communication. Shielded cable

shall be used for the communication line. Up to four annunciators can be connected to one panel. A rotary switch is provided on

the panel to indicate how many annunciators are connected. Another rotary switch is on the annunciator to set the address. The

annunciators must be addressed consecutively. See page 89 for wiring information. Refer to bulletin #8840024 for installation

instructions and maximum wire run.

Test Procedure

The system should be inspected, tested and maintained in accordance with NFPA-72 National Fire Alarm Code, Chapter 10 and

any other requirements of the local authority having jurisdiction.

Test Procedure (Canada)

The system should be inspected, tested and maintained in accordance with ULC Standard CAN/ULC-S536 and any other

requirements of the local authority having jurisdiction.

Testing should be done as a minimum as described below

1. Notify the fire department or other receiving station if alarm, supervisory and/or trouble signals are transmitted.

2. Notify the proper building personnel so that audible and/or visual signals can be ignored.

Fire Alarm Annunciator Panel Troubleshooting

3. If the release panel is monitored by a building fire alarm panel, take appropriate action to eliminate any unwanted events.

4. Momentarily open each of the following circuits.

Each initiating device zone

Supervisory circuit

Notification Appliance/Releasing circuit - observe that this results in a trouble condition and all indicators operate as

described in the appropriate preceding section for the particular circuit that is faulted.















Fire Alarm Annunciator Model 5235 User Manual









DWG# 3550-17

Popular Brands
Popular manuals

Fire Alarm Remote Annunciator

An annunciator panel, also known in some aircraft as the Centralized Warning Panel (CWP) or Caution Advisory Panel (CAP), is a group of lights used as a central indicator of status of equipment or systems in an aircraft, industrial process, building or other installation. Usually, the annunciator panel includes a main warning lamp or audible signal to draw the attention of operating personnel to the annunciator panel for abnormal events or condition.

  • 2Process control


The annunciator panel of a Cessna 441 aircraft. The illuminated process annunciators are those that are normally lit when the engines are not running, plus one annunciating that the aircraft's door is not locked
Close-up view of the left module of the Cessna 441 annunciator panel in 'test' mode

In the aircraft industry, annunciator panels are groupings of annunciator lights that indicate status of the aircraft's subsystems. The lights are usually accompanied with a test switch, which when pressed illuminates all the lights to confirm they are in working order. More advanced modern aircraft replaces these with the integrated electronic Engine Indicating and Crew Alerting System or Electronic Centralised Aircraft Monitor.

An aviation annunciator panel will have a test switch to check for burned out lamps. Indicator lights are grouped together by their associated systems into various panels of lights.[1]

Lamp colours are normally given the following meanings:[2]

  • Red: Warning, this systems condition is critical and requires immediate attention (such as an engine fire, hydraulic pump failure)
  • Amber: Caution, this system requires timely attention or may do so in the future (ice detected, fuel imbalance)
  • Green: Advisory/Indication, a system is in use or ready for operation (such as landing gear down and locked, APU operating)
  • White/blue: Advisory/Indication, a system is in use (seatbelt signs on, anti-ice system in-use, landing lights on)

The annunciator panel may display warnings or cautions that are not necessarily indicative of a problem; for example, a Cessna 172 on its after-landing roll will often flicker the 'Volts' warning simply due to the idle throttle position and therefore the lower voltage output of the alternator to the aircraft's electrical system.

More complicated aircraft will feature Master Warning and Master Caution lights/switches. In the event of any red or yellow annunciator being activated, the yellow or red master light, usually located elsewhere in the pilot's line of sight, will illuminate. In most installations they will flash and an audible alert will accompany them. These 'masters' will not stop flashing until they have been acknowledged, usually by pressing the light itself, and in some cases the audible alert will also continue until this acknowledgement. On some aircraft (most Boeing airliners, for example) the 'masters' will also flash briefly and the audible alert will sound whenever the autopilot is disconnected, as an additional reminder to the pilots that manual control is now required.

Process control[edit]

In industrial process control, an annunciator panel is a system to alert operators of alarm conditions in the plant. Multiple back-lit windows are provided, each engraved with the name of a process alarm. Lamps in each window are controlled by hard-wired switches in the plant, arranged to operate when a process condition enters an abnormal state (such as high temperature, low pressure, loss of cooling water flow, or many others). Single point or multipoint alarm logic modules operate the window lights based on a preselected ISA 18.1 or custom sequence.

In one common alarm sequence, the light in a window will flash and a bell or horn will sound to attract the operator's attention when the alarm condition is detected. The operator can silence the alarm with a button, and the window will remain lit as long as the process is in the alarm state. When the alarm clears (process condition returns to normal), the lamps in the window go out.

Alarm Annunciator used for process controls
Alarm Annunciators being used in electricity distribution substations
Example of an Alarm Annunciator that would be used in a variety of different plants

Annunciator panels were relatively costly to install in a plant because they had dedicated wiring to the alarm initiating devices in the process plant. Since incandescent lamps were used, a lamp test button was always provided to allow early detection of failed lamps. Modern electronic distributed control systems usually require less wiring since the process signals can be monitored within the control system, and the engraved windows are replaced by alphanumeric displays on a computer monitor.[3]

Behavior of alarm systems, and colors used to indicate alarms, are standardized. Standards such as ISA 18.1 or EN 60073 simplify purchase of systems and training of operators by giving standard alarm sequences.

Obsolescence and revival[edit]

The introduction of computer monitor based control systems during the 1980s and 1990s saw a wholesale absorption of alarm window displays on to the computer screen. This created a down-turn in the sales of the conventional Alarm Annunciator systems and many of the companies manufacturing these alarm annunciator products were either sold off or went out of business.This has left today a major obsolescence support problem for customers who are still using these Alarm Annunciator systems as part of their safety systems.

Over the last five years the Alarm Annunciator has seen a resurgence in popularity especially for use in IEC61508 SIL 1 and SHE (Safety Health and Environmental) alarm monitoring applications.[citation needed] The modern trend is to identify critical alarms and return them from the computer screen to discrete alarm windows. This is being done for two reasons. Firstly, alarm annunciators offer pattern recognition to the operators in the form of LED alarm fascias instead of just providing an exhaustive list of alarms and events which the operators have to scroll through and in some instances alarms can be overlooked. Secondly, the analysis of plant failure modes is leading to the separation of critical alarm monitoring and process control systems for safety reasons.

Discrete annunciators vs SCADA alarm systems[edit]

SCADA systems were formerly[when?] considered the preferred alternative to discrete annunciators. A software-based solution, with almost endless ability to analyze, present and process alarms, has the potential for replacing discrete alarms switches altogether.

However, software carries its own reliability risks. Reliance on a software program to trigger an alarm assumes that the analog signal, the programmer's logic code and HMI, the PLC or PC running the programs, and the interaction between all of the above, are all entirely trustworthy. This is exacerbated by frequently changing computer hardware & firmware platforms and the need to modify existing software. Alternatively new annunciator panels are utilizing long lasting and bright LEDs that significantly reduce the cost and maintenance of the panels. These new versions of the traditional system are still preferred over computer based systems especially in critical plants like nuclear power generation, oil and gas.

In addition to the above, latest annunciator designs now feature clever electronics to give them very high immunity to noise, and can therefore reduce the amount of false alarms due to noise.

Fire alarm panel[edit]

In large buildings, a central fire alarm annunciator panel is located where it is accessible to fire-fighting crews. The annunciator panel will indicate the zone and approximate physical location of the source of a fire alarm in the building. The annunciator will also include lamps and audible warning devices to indicate failures of alarm circuits. In a large building such as an office tower or hotel, the fire annunciator may also be associated with a control panel for building ventilation systems, and may also include emergency communication systems for the building.


See also[edit]

  • Tell-tale (automotive) ('idiot light')


  1. ^Photos: British Aerospace BAe-146-200A Aircraft Pictures
  2. ^Warning Systems
  3. ^Béla G. Lipták (ed), Instrument engineers' handbook: Process software and digital networks, Volume 3, CRC Press, 2002 ISBN0-8493-1082-2, page 289
Retrieved from ''