This section introduces the implementations performing on EXFIRE360 control panel and on its compact version to meet the requirements of paragraphs 4.29 (release of extinguishing agents to discharge selected areas) and 4:30 (activation of alarm devices with different signals) EN12094-1 standard.
Compared to EX6EV-C board currently certified for switching off, SV is going to offer a new configuration where the role of the individual channels of the input / output is not first defined and where the logics are performed directly from EXCPU360.
To explain this new configuration please refer to the diagram of a detection and extinguishing system of the two areas shown in the following figure:
The boards used to manage this system will be EX6EV 2, 2 and 2 EX6SO EX8SI (or a EXLOOP-E in addition to the sole part of detection).
From a detailed analysis of the individual signals, it is possible to notice that:
The detection is performed by acquiring at least two signals of conventional type for the area (or tab EX8SI EX6EV) or by addressable type devices (card EXLOOP-E). The logic activation of the solenoids will be defined in the program control unit configuration (SV Protection);
The discharge buttons will be acquired under a conventional input (EX8SI or EX6EV). The configuration program of the plant will be modified so each input channel is defined as a specific feature (Manual release, abort button, etc);
The same principle will be used also for all the other inputs (buttons interruption and prolongation emergency mode selector switches automatic / manual selector main / reserve, pressure switches for high and low pressure, general signs of supervision of the system);
Regarding the outputs, the board will remain EX6EV, the responsible board for the control of the solenoids of the area (directional valves) and it can also activate the optical / acoustic warning pre-discharge and discharge devices (4.30). The functionality of each output will be defined in the program control unit configuration. An EX6EV board will be provided for each discharge zone;
EX6SO boards will manage the command to the solenoids of the benches of main cylinders / reserve common to both extinguishing systems, as well as the implementation of any additional alarm devices. The function of each output will be defined through SV Protection;
To meet the current requirements according to which a generic failure should not affect more than one zone of discharge, the commands to the common solenoids will be redundant (you will then need 8 outputs in total, for this we will use 2 EX6SO );
The control of auxiliary devices (such as block ventilation, shutters closure, etc.) will be carried out through the outputs of unsupervised EX6EV board and the logic of intervention will be freely programmable by the user through SV Protection;
The control on the system status and the logic of activation will be executed through the control unit EXCPU360, according to the functionality defined in the configuration program;
For example, the inhibition of the discharge in the presence of a fault on a device of the emergency extension will be determined by evaluating the status of all devices configured as holdable in Protection. In this way, it is also possible to set multiple lines of input or output with the same functionality;
The reports about the status of the discharge zone (enabled / release / fault / etc.) will appear on the display board MODLCD EX6EV relative;
It will also be possible to change the settings menus on the same display (delayed discharge / inhibition time restore / etc.) for each extinguishing zone and to disable (at access level 3) the charge itself.
The above mentioned example is related to a complete configuration. With the same logic it will be possible to manage less complex plants (for example a single area with an high pressure switch, a discharge button and a single solenoid to pilot).
Unlike the certified configuration (locked on the use of board and a EX8SI EX6EV adjacent) the new version will cover the plant and regulatory requirements with a single board (EX6EV) to be expanded with additional input boards (EX8SI or EXLOOP-E) or output (or EX6EV EX6SO) depending on the characteristics of the system.