Страница 2: ДСТУ EN 12094-1:2015. Fixed firefighting systems. Components for gas extinguishing systems. Requirements and test methods for electrical automatic control and delay devices (61903)

If the information is transmitted to automatic routing equipment E as defined in EN 54-1 the transmission to E shall be indicated visibly at access level 1 by a separate light emitting indicator and/or by an alphanumeric display in a clearly identifiable way.

Key

1. Fire detection and fire alarm system (f.d.a.s.)

2. Electrical control device (e.c.d.)

3. Release equipment

NOTE Functions a) to f) per flooding zone; outputs e) and f) at least common for each function. The indicator f) is only compulsory in the case of a connection as specified in EN 54-1.

1. — Compulsory functions

The e.c.d. may be able to carry out the following optional functions (options with requirements), (see also Figure 2):

7. Delay the extinguishing signal (see 4.3.2 b)) for a given period of time which is known as a pre-discharge­warning time (see also 4.17);

8. Reception of a signal representing the flow of the extinguishing agent (see also 4.18);

9. Monitoring of the status of components (e.g. weighing devices, valve positions), (see also 4.3.2 e) and 4.19);

10. Reception of signals from an emergency hold device (see also 4.20);

If this option is used, means shall be provided to transmit the information concerning the- activation of the emergency hold device.

7. Separate monitoring of the status of non-electrical disable device(s) (see also 4.3.2 e) and 4.19);

If this option is used, means shall be provided to transmit the information concerning the blocked position.

7. Control of flooding time, for instance in the case of low pressure CO₂ systems (see also 4.21);

8. Initiating of a secondary flooding, for instance in the case of low pressure CO₂ systems, including the reception of a signal from a manual control device (see also 4.22);

9. Reception of signals from ancillary devices on the change over from manual only mode to automatic/manual mode and vice versa (see also 4.23);

If this option is used, means shall be provided to transmit the information concerning the change over.

7. Transmission of a triggering signal to equipment within the fire extinguishing system (e.g. pilot cylinders, optical warning devices) (see also 4.24);

8. Transmission of extinguishing signals to spare cylinders or spare cylinder banks (see also 4.25);

If a main and a spare bank is provided, it shall be indicated on the e.c.d. that the spare bank will be activated in case of alarm. The indication shall be given at access level 1 by a physically separated light emitting indicator or by an alphanumeric display.

7. Transmission of signals to equipment outside the fire extinguishing system (triggering of doors, ventilation shut down, plant shut down etc.) (see also 4.26);

8. Reception of signals from emergency abort device (see also 4.27);

If this option is used, means shall be provided to transmit the information concerning the activation of the emergency abort device.

7. Control of an extended discharge, for instance in the case of low pressure CO₂ systems (see also 4.28);

8. Release of the extinguishing media for selected flooding zones (see also 4.29);

Activation of alarm devices with different signals (see also 4.30).

Key

1. Electrical control device (e.c.d.)

NOTE 1 Functions g) to u) per flooding zone; outputs j), k), n) and r) at least common for each function.

NOTE 2 Functions g), t) and u) are optional extensions of the compulsory functions a), b) and c).

NOTE 3 Functions I) and m) can be provided in combination with the compulsory function b).

2. — Optional functions g) to u)

NOTE This subclause relates to 4.3.2 a).

NOTE In some European countries there are national regulations requiring that the activated condition can only be established after the reception of two input triggering signals from two independent transmission paths between a c.i.e. of an f.d.a.s. and the e.c.d.

• the signal from an emergency hold or abort device is present or

• a fault of the transmission path to the emergency hold or abort device is present or

• the disabled condition is present or

• the release of extinguishing media is to be prevented in accordance with 4.29.

If the processing of the input triggering signal has started, no disablement shall be possible for the appropriate flooding zone.

,NOTE This subclause relates to 4.3.2 b).

The e.c.d. shall be designed, on receipt of the input triggering signal, to transmit the extinguishing signal (see also 4.3.2 g) and 4.17).

NOTE This subclause relates to 4.3.2 c).

The manufacturer may specify a time shorter than 3 s. In this case, this specification shall be tested and verified.

The manufacturer may specify a time shorter than 1 s. In this case, this specification shall be tested and verified.

NOTE This subclause relates to 4.3.2 d) and see annex A.

1. an audible indication and

2. visible indications for each flooding zone at access level 1 by one or both of the following means:

1. physically separated light emitting indicators;

2. an alphanumeric display.

Each new alarm signal from another zone shall cause the audible indication again (see also 4.14.10).

For the indication of the pre-activated condition, the same indicators may be used as for the indication of the activated condition. If the same light emitting indicator is used, the reception of the first signal shall be indicated with flashing light, the activated condition with steady light.

The released condition shall be established upon reception of a signal representing the flow of the extinguishant or upon the triggering of the extinguishing signal output.

NOTE This subclause relates to 4.3.2 d) and 4.3.2 f) and see annex A.

• physically separated light emitting indicators;

• an alphanumeric display.

When the released condition is established upon reception of a signal representing the flow of extinguishant without the activated condition, the released condition shall also be indicated audibly.

The audible indication shall be capable of being silenced manually at access level 1 or 2 by an operation separate from the reset function. It shall not be silenced automatically.

If the information is transmitted to automatic routing equipment E as defined in EN 54-1 the transmission to E shall be indicated visibly at access level 1 by a separate light emitting indicator and/or by an alphanumeric display in a clearly identifiable way.

NOTE The value of 100 s is chosen in accordance with EN 54-2.

1. Short circuit or interruption in a transmission path for the reception of input triggering signal(s) from an f.d.a.s.;

2. Short circuit or interruption in a transmission path to the actuators and additional non-electrical control and delay devices (see EN 12094-2) (e.g. mechanical), if the additional control device is not in the same cabinet as the electrical one;

3. Short circuit or interruption in a transmission path to alarm devices;

4. Short circuit or interruption in a transmission path to manual controls (e.g. emergency hold device, emergency abort device, manual triggering device) (see also 4.20 or 4.27 respectively);

5. Short circuit or interruption in a transmission path to a non-electrical disable device;

6. Short circuit or interruption in the transmission path for monitoring of components relevant for the proper ' function of the extinguishing installation;

7. Short circuit or interruption in the transmission path for the reception of the signal representing the flow of the extinguishing agent;

8. Short circuit or interruption in the transmission path to fault warning routing equipment as specified in EN 54-1 (J);

9. Short circuit or interruption in the transmission path to fire alarm routing equipment as specified in EN 54-1 (E);

10. Power supply faults:

1. Faults of power supplies as defined in EN 54-4;

2. Short circuit or interruption of transmission paths carrying power between the e.c.d. and the power supply, if these transmission paths are outside the e.c.d. cabinet and outside the power supply cabinet and where the transmission path between the two cabinets exceeds 0,1 m. In this case, in addition, provision shall be made for two separate transmission paths from the power supply to the e.c.d. such that a short circuit or interruptions in one of the transmission paths does not prevent the supply of power to the e.c.d. Transmission paths between the e.c.d. and the power supply, which are outside the e.c.d. cabinet and outside the power supply cabinet and where the transmission path is up to 0,1 m, shall be mechanically protected (e.g. by a steel pipe);

11. Earth fault which affects the function of the e.c.d.;

12. Rupture of a fuse or operation of any protective device that would prevent the operation of the e.c.d.;

13. Incorrect execution of the operating program and/or corruption of the memory content (see clause 6, only in case of a software controlled e.c.d.).

NOTE The value of 20 s is chosen in accordance with EN 54-2.

NOTE 1 This subclause relates to 4.3.2 d) and 4.3.2 e).

NOTE 2 See also 5.7 and 6.7.

1. an audible indication; and

2. a visible indication by means of a light emitting indicator at access level 1;

Faults on a transmission path for 4.13.1 a) to g) covering one flooding zone shall be indicated at least as a common fault of that flooding zone.

Faults on a transmission path for 4.13.1 a) to g) covering more than one flooding zone shall be indicated at least as a fault of that transmission path.

This fault indication shall remain until manual reset and/or another manual operation.

If more faults have been detected than can be simultaneously indicated, this shall be indicated.

1. the function of processing alarm signals received via the transmission path(s) to a f.d.a.s., if the manual only mode is not provided.

2. the function of processing alarm signals received via the transmission path(s) to manual triggering devices.

3. output signal(s) and/or transmission path(s) to actuators and associated triggering signals to activate the outputs mentioned in 4.3.2 e) and f).

4. output signal(s) and/or transmission path(s) for triggering of equipment outside the fire extinguishing system (triggering of doors, ventilation shut down, plant shut down etc.), if such outputs are provided.

The released condition shall not be reached when the actuators are disabled, unless the signal representing the flow of extinguishant is received, see 4.18.3.

Disabling of the transmission path to the alarm devices of a flooding zone shall be possible only in combination with the disabling of the transmission path to the actuators of that flooding zone.

•4.15.3 Provision shall be made so that the enabling of a function and/or transmission path shall not produce a signal to the actuators with the consequence of a direct release of the extinguishing agent.

The enabling of a function and or transmission path to actuators during the presence of an alarm signal in the disabled condition shall not release the extinguishing agent without the elapsing of the predetermined pre discharge warning time.

NOTE This subclause relates to 4.3.2 d).

The disablement as described in 4.15 shall be indicated at access level 1 for each flooding zone within 2 s unambiguously by means of:

• separate light emitting indicators for each disablement or

• an alphanumeric display.

NOTE This subclause relates to 4.3.2 g).

NOTE This subclause relates to 4.3.2 h).

NOTE This subclause relates to 4.3.2 i) and 4.3.2 k).

NOTE National guidelines for planning and installation can require e.g. a separate indicator per flooding zone or a maximum number of monitored components per indicator.

1. physically separated light emitting indicators;

2. an alphanumeric display.