INIM Electronics PREVIDIA MAX IFMEXT Manual Del Usario página 9

Installation manual
3 Mounting IFM internal modules
Refer to Figure 2 - PRCAB + IFM, page 1.
The internal modules (IFM24160, IFM2L, IFM4R, IFM4IO, IFMDIAL, IFM16IO, IFMNET, IFMLAN, IFMEXT) must be
mounted in the special compartment inside the cabinet. There are two bars on either side of the compartment
for mounting and connecting modules, up to 8 per cabinet.
1. Inside the compartment, find the position of the module that corresponds to one of the connectors on
the PCB bar.
If you are installing an IFM24160 power-supply module, you must use the first connector at the top. When
installing any other type of internal module, you can use this or any other connector that is free.
2. Position the module in such a way that it is on level with the desired connector on the bar hen insert it in
place by pushing it carefully to the left.
3. Affix the module to one of the holes on the grounding bar using one of the supplied screws.
4. Complete the wiring on the internal module.
4 Wiring
The IFMEXT module provides 7 terminals for the connection of signalling, activation and control devices linked
to the apparatus of the fire extinguishment system.
• 3 input terminals:
- PRESSOS. (paragraph 2 - [C])
- STOP-EXT (paragraph 2 - [D])
- MAN-EXT (paragraph 2 - [E])
• 4 output terminals:
- VALVE (paragraph 2 - [F])
- HOLD (paragraph 2 - [G])
- PRE-EXT (paragraph 2 - [H])
- RELEASED (paragraph 2 - [I])
Cables:
2 wire shielded cable
Proper section (minimum 0.5mm², maximum 2.5 mm²)
Compliant with local laws and regulations in force
Note:
In order to comply with EN12094-1 standard requirement, if more than one extinction
channel is managed by a single Previdia Max panel (more than one IFMEXT module
installed on a single panel) a backup FPMCPU unit have to be installed in the system, this
backup unit will provide the disablement function for each extinction channel also in the
unlikely event of main FPMCPU system fault.
Connection of Input terminals
Refer to Figure 3 - Input, page 32.
The wiring diagram illustrates the connection to be completed on the input terminals. The devices to be
connected are: the normally open input of a pressure switch [A], a normally-open output of a command which
interrupts extinguishment [B] and a normally-open output of an alarm activation command [C]. The resistances
to be utilized are the same for each channel.
Connection of Output channels
Refer to Figure 4 - Output, page 32.
The wiring diagram illustrates the connection to be completed on the input channels. The connectible devices
are: a valve for extinguishant gas discharge [A], a device which signals the suspension of the extinguishment
procedure [B], a device which signals the activation of the pre-extinguishment time [C] and a device which
signals the completed extinguishant gas discharge operation [D]. The resistances to be utilized are the same for
each channel.
Mounting IFM internal modules 9