Digital fire detection control panel
LYON
FIRE PROTECTION MANUFACTURER
Ctra. de Molins de Rei a Rubí, Km. 8,4 - 08191 RUBÍ (Barcelona) ESPAÑA.
66
Tlf.: +34 935 862 690 - Fax:+34 936 999 261 - [email protected] -
www.cofem.com
EXCESSIVE POWER CONSUMPTION
Cause
The loop is overloaded or has a short circuit; the voltage in the loop is below 22V.
Solution
Check the wiring for the affected loop, check for possible short circuits, check whether
there are elements connected to the loop that should not be directly connected to it, such
as: conventional detectors, end-of-line condensers or resistances, electromagnets,
sounders, etc. Also check that it has not been affected by external agents such as water
leaks, etc. Once the original cause of the fault has been located and resolved, wait 5
minutes before resetting the incident in the control panel, since the protection elements
need to cool down. For normal operation, the voltage in the loop should be between 22V
and 35V.
OPEN LOOP
Cause
The loop is not closed correctly.
Solution
Check wiring and connections of the affected loop.
CONTROLLER FOR LOOP: OX IS NOT COMMUNICATING
Cause
The controller for the indicated loop has stopped working.
Solution
Reset the control panel. If, during start-up, the following message is shown:
“CONTROLLER NOT FOUND WITH ADDRESS: 001 … 002 003 004 005”, stop the
control panel, disconnecting both the 110~230V power supply and the batteries, and
check that the controller is correctly inserted in the control panel’s back panel. Then start
the control panel up again. If the problem persists, please contact our Technical Services
Department.
OPEN CIRCUIT IN MASTER
(Open Circuit in the KMAY master for conventional detectors)
Cause
There is a lack of continuity in the wires for the line of slaves from the KMAY to the end
of the line. The end-of-line is not mounted.
Solution
Check that the KMAY is correctly connected to the detectors and manual call points
which are connected to it. Check that the end-of-line 10uF-63V condenser is correctly
connected, and with the right polarity (see chapter 1.5.3.1). To operate correctly the
KMAY’s output voltage should be between 18V and 21V.
SHORT CIRCUIT IN MASTER
(Short Circuit in the KMAY master for conventional detectors)
Cause
There is a short circuit in the connections from the KMAY to the end of the line.
Solution
Check that the KMAY is correctly connected to the detectors and manual call points
which are connected to it. Check that the end-of-line 10uF-63V condenser is correctly
connected, and with the right polarity, and check that the slave manual call points are
connected with the correct polarity (see chapter 1.5.3.1). To operate correctly the
KMAY’s output voltage should be between 18V and 21V.
RELAY OPEN CIRCUIT 01
(Open circuit for the relay 1 of the MDA1Y, MDA2Y or MYOA)
Cause
There is a lack of continuity between the output of the relay 1 of the MDA1Y, MDA2Y or
MYOA and the end-of-line resistance.
Solution
Check that the MDA1Y, MDA2Y or MYOA is correctly connected to the sounders
connected to it, check that the 33 K
end-of-line resistance and the supervision diodes are
correctly mounted (see chapters 1.5.3.2, 1.5.3.3 and 1.5.3.7). Check the status of the fuse
protecting the module. To operate correctly, the output voltage of the relay 1 of the
MDA1Y, MDA2Y, MYOA must be between -2 V and -7,8 V when in standby and
between 24 V and 29 V when activated.
