◀ Back to categories

Fire detection F.A.Q.

How to set an FX series panels network?

Network structure

An FX series panels network features two levels:

  • Local networks, each of which composed of max 4 panels or FXUP expansion units. The following structures are available:
    • 1 FXPRO panel + max 3 FX/10, FX/20, FX/50 panels or FXUP units.
    • 1 FXMASTER panel + max 4 FX/10, FX/20 or FX/50 panels.
  • A boards network composed of max 8 local networks (that is, max 8 FXPRO panels or FXMASTER panels).

The network supports max 8 panels or expansion units (FXPRO, FX/10, FX/20, FX/50 or FXUP).

If two local networks have already 4 panels/units each (the max number) the remaining 6 can only be FXMASTER panels, without other panels to be connected since the max capacity of the whole network has already been reached.

Similarly, if FXPRO panels have been connected, no other devices can be connected: no FXMASTER panels (networks are already 8) no panels/units (panels/units are already 8).

Required accessories

FX/10 control panels shall be equipped with FX10485 optional board.

All panels/units shall be equipped with a FXMASTERINT interface required to connect the panel to the local network:

  • FXPRO panels are equipped with a FXMASTERINT interface already installed, included in the price.
  • FXUP expansion units features a FXMASTERINT interface board to be installed, included in the price.
  • Therefore you shall buy one FXMASTERINT interface board for each panel FX/10, FX/20, FX/50.

In addition, if within the keyboards network there are at least two FXPRO panels and/or FXMASTER boards, it will be necessary to buy one FXMASTERINT interface for each of the FXPRO and FXMASTER devices.

Wirings

To connect a FX/10, FX/20, FX/50 panel to the local network:

  • Connect a FXMASTERINT  module to one of the sockets (1 to 4) behind FXMASTER or FXPRO display.
  • Connect a FXMASTERINT module (GND, Q and T terminals) to the panel RS‑485 serial line.
  • Connect a FXMASTERINT module (LED terminals) to a panel bell output. Configure the output to activate upon fire alarm.
  • Install a 4700 Ω end-of-line resistance between the two LED terminals.

To connect a FXUP expansion unit to the local network:

  • Connect a FXMASTERINT ;module to one of the sockets (1 to 4) behind FXPRO display.
  • Connect a FXMASTERINT module (GND, Q and T terminals) to the unit RS‑485 serial line.
  • Connect a FXMASTERINT module (LED terminals) to the ALARM OUT output of the unit distribution board.
  • Install a 4700Ω end-of-line resistance between the two LED terminals.

For FXPRO, all wirings have been made by default. FXMASTERINT module is already connected to socket 1, properly wired and equipped with an end-of-line resitance.

To connect two or more local networks:

  • Connect a FXMASTERINT interface to the "RS‑485" socket behind FXMASTER and FXPRO devices display.
  • Connect all FXMASTERINT interfaces using a dedicate serial line without branching. Connect LED terminals similarly.

Setup

Set keyboards of FXMASTER and FXPRO devices with different ID numbers.

Save to each keyboard ID and socket of all panels/units.

Procedures required are described on technical manuals of FXMASTER and on programming manuals of FXPRO.

FX/10 FX/20 FX/50 FXMASTER FXMASTERINT FXPRO FXUP

What to do in case of "open line" fault (or similar)?

Such fault indicates that the circuit of the line indicated in the error message is interrupted.

The circuit indicated in the error message can be:

  • Z000 Call points line open (TACÓRA panels, MCP input)
  • Zxxx Detectors line open (TACÓRA panels and TAREL10 boards, LIN. input)
  • Zxxx Digital line open (TACÓRA panels and TAREL10 boards, I/O input)
  • BELL OPEN (TACÓRA panels, ALARM RELAY output)
  • Open circuit (FX panles, any supervised inputs or outputs)

Restore the circuit to solve the problem.

Non-used lines

  • If a digital line is not used, make sure it is configured as Output.
  • If a call points or detectors line is not used, make sure the two terminals are connected to the two ends of a proper end-of-line resistance.
  • If a bells line is not used, make sure it is disabled.

Lines in use

  • Disconnect line wires from input or output terminal.
  • Use a VOM to check the resistors at line ends: the value shall be equal to that of the end-of-line resistance.
  • If the resistance has the expected value, control the connection to line ends again.
  • If the resistance tends toward infinity, verify the presence of the end-of-line resistance.
  • If the resistance tends toward infinity and the end-of-line resistance is properly installed, find the problem proceeding per bisections: find the half of the line and check the resistance between the positive and the negative conductors again.
    • If the value is correct, the problem is between the new measured point and the ends.
    • If it still tends toward infinity, the problem is between the new measured point and the end-of-line resistance.
  • Identify the half of the section with problems and measure again, and so on until the fault(s) is/are found.
  • Once all the faults of the line have been restored, connect the wires to input or output terminals again.
FX/10 FX/20 FX/50 FXPRO FXUP TA1002 TA1004 TA2000 TA4000 TACORA TACÓRA TAEXP10 FAULT

What to do in case of "short earth GND" fault?

Note: such error may occur also during the connection via USB cable, CP8/SER2 cable or similar to the PC used for the setup. In such case, the error will be reset at the end of the connection.

The circuit of all power outputs and all data lines of EL.MO. panels, excluded the RS‑485 serial line, features a galvanic isolator that provides isolation against panel earth.

The contact between a line/loop negative and the cable shield will cause a fault signal when grounded.

To reset the error, you shall find the contact point and split the contact.

How to find faulty lines

Disconnect all lines, included loop and serial lines, and reset the panel, then wait for two minutes.

If the short earth GND fault is not reset, the board has been damaged or is defective.

Connect all lines again, one at a time, waiting for two minutes in order to see if the fault reappears before proceeding with the next line.

If the fault reappears, control the last line connected, as indicated below.

When the line is restored completely, reconnect the remaining lines waiting for two minutes between one and the next one. When the fault reappears, it means that the last line reconnected is faulty and needs reparing.

Find lines faults

Instead of looking for a fault device by device, it is usefult to use the bisection method, that is dividing the line in half and identifying the half where the fault is, then going on by dividing the half containing the fault in half until the fault is found.

Below are detailed points that illustrate the procedure.

  1. Individuate a device positioned around the half of the line (considering the amount of connected devices and not cables length) and disconnect the line after such device.
  2. Reconnect the line and verify the presence of the fault.
    • If the fault persists, the problem is before the interruption. There may be a problem also after the interruption, therefore such part shall remain disconnected (it is advisable to write down interruption position).
    • If the fault has disappeared, the problem is after the interruption. Restore last interruption.
  3. Repeat steps 1 and 2 searching the half of the faulty part just found. You will analyse one quarter of the line, then one eighth, and so on until you will identify the single cable section with fault or connected wrongly.
  4. Once the fault has been found and fixed, reconnect the line sections disconnected one by one, starting from the interruption nearest to the beginning of the line (that is, from last interruption performed). If the fault appears again, this means that there is another earth-ground short-circuit fault: repeat steps 1 and 2 searching the half of the faulted part

Example

The following diagram is an example with several faults, illustrating also the steps made to individuate them all

In grey colour the part that is working properly, in black colour the part with faults, line cuts represent the part temporarily disconnected.

Bisection

  1. Faulty lines.
  2. Identification of the half of the line and division in two parts. The fault persists on the connected part.
  3. Identification of the half of the part with the fault and division in two parts. The fault resets: the problem was on the part just disconnected.
  4. Reconnection of the part disconnected at step 3, identification of the half and division in two parts. The fault appears again: it is on the part just reconnected.
  5. Identification of the half of the part with the fault and division in two parts. The fault resets but only one part is disconnected: fault found. Fixing of the fault and reconnection of the fixed part (when the fixing is correct, the fault disappears).
  6. Reconnection of the part disconnected at step 4. The fault appears again: there is a fault on the part just reconnected.
  7. Identification of the half of the part with the fault and division in two parts. The fault persists but only one part has yet to be confirmed as working properly: fault found. Fixing of the fault and reconnection of the fixed part (when the fixing is correct, the fault disappears).
  8. Reconnection of the line part disconnected at step 7. The fault does not appear again.
  9. Reconnection of the line part disconnected at step 2. The fault does not appear again. All line faults have been reset/fixed.
FX/10 FX/20 FX/50 FXPRO FXUP TA1002 TA1004 TA2000 TA4000 TACORA TACÓRA FAULT

How to set the address of devices on serial lines or loops?

Different devices support different ways for address setup.

Set device address as per following steps:

  • Addresses, converted in binary codes, are set by using device dip switches. Dip switches position for the various addresses is indicated on device manuals or can be calculated as indicated on Guide to fire detection systems document that can be dowloaded from EL.MO. Download area.
  • Addresses, divided into hundreds, tens and units, are assigned by adjusting device rotary switches.
  • The address is saved to detector memory with a dedicated programming device, on to which the detector can be screwed after having removed it from its base.

Some devices, such as inout/output modules, use also addresses immediately after the one set. Such addresses shall not be set for other devices and shall not be greater than the last address available on the loop (254).

How to use extinguishing modules?

Automated extinguishing systems mainly consist of a series of nozzles connected via pipes to an under pressure container where the extinguishing substances are stored.

Nozzles opening and the releasing of the extinguishing substances is controlled by an extinguishing module installed on a compatible fire detection panel.

Substances release can also be controlled by a panel event or by yellow manual call points (pressed or not). The release will be retarded in order to allow people to leave the protected premises.

Once received the release command, the extinguishing module will signal the imminent release through a dedicated alarm line.

To delay the release, press and hold one of blue manual call points.

To cancel the release, reset the panel.

The module is also equipped with an input to control extinguishing substances pressure (to be connected to a pressure switch) and monitor the real substance release .

In the diagram below, a magnetic contact is connected in series to the release delayed call point.

Make sure the call point is connected as NC and that INT.EM. input is set to work with NC devices.

EXTING module can be set to reset the alarm event caused by call points pressure or magnetic contact opening once that the call point is reset and the door closed. AUX2 panel output, that is automatically assigned to INT.EM. supervision, will reset consequently.

FAQ55 Extinguishing diagram

EXTING TA1002 TA1004 TA2000 TA4000 TACORA TACÓRA

 

Help us improve!

Tell us who you are and help us improve.*


*This data will be used by our technicians for statistical purposes, in order to improve our service. If you would rather not tell, choose "Don't ask me now". You will be able to modify your choice using the button at the end of the page.

Help us improve!

Would you like www.elmospa.com to remeber your choice?*


*Click "Yes" to save your choice on your device using a persistent cookie. Click "No" to delete the cookie (we will ask you to identify yourself again at your next visit.)

Active Products