Digital fire detection control panel
LYON REMOTE PLUS
87
FIRE PROTECTION MANUFACTURER
C / Compositor Wagner, 8 –P.I. Can Jardí 08191 - RUBÍ (Barcelona) ESPAÑA.
Tlf.: +34 935 862 690 –
RELAY SHORT CIRCUIT 02
(Short circuit for the relay 2 of the MDA2Y)
Cause
There is a short circuit between the output of the relay 2 of the MDA2Y and the end-of-
line resistance.
Solution
Check that the MDA2Y 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
chapter 1.5.4.5). To operate correctly, the output voltage of the relay 2 of the MDA2Y
must be between -2 V and -7,8 V when in standby and between 24 V and 29 V when
activated.
24V RELAY
( 24V Fault in module MDA1Y, MDA2Y or MYOA)
Cause
The 24 V voltage does not reach the module from the power supply’s 30 V output, which
may be from the control panel or from an auxiliary external power source.
Solution
Check the connections for the 30 V line from the control panel’s power source, or
auxiliary external power source, to the 24 V input to the MDA1Y, MDA2Y or MYOA
module, (see chapters 1.5.4.3, 1.5.4.4 and 1.5.4.5). To operate correctly, the 24 V voltage
input to the modules should be between 20 V and 29 V.
OC INPUT 01
(Open line in MSTAY input 1)
Cause
There is a lack of continuity between the input of the relay 1 of the MSTAY and the end-
of-line resistance.
Solution
Check the correct connection of the MSTAY elements connected to it, verify the correct
assembly of the end of line resistor, 33 K
(see chapter 1.5.4.2.). The MSTAY voltage
input 1 for proper operation should be between -5 V and -7 V at rest.
SC INPUT 01
(Short circuit in MSTAY input 1)
Cause
There is a short circuit between MSTAY input 1 and the end of line resistor.
Solution
Check the correct connection of the MSTAY elements connected to it, verify the correct
assembly of the end of line resistor, 33 K
(see chapter 1.5.4.2.). The MSTAY voltage
input 1 for proper operation should be between -5 V and -7 V at rest.
OC INPUT 02
(Open line in MSTAY or MYOA input 2)
Cause
There is a lack of continuity between the input 2 of the MSTAY or MYOA and the end-
of-line resistance.
Solution
Check the correct connection of the MSTAY elements connected to it, verify the correct
assembly of the end of line resistor, 33 K
(see chapter 1.5.4.2 and 1.5.4.3). The MSTAY
and MYOA voltage input 2 for proper operation should be between -5 V and -7 V at
rest.
SC INPUT 02
(Short circuit in MSTAY or MYOA input 2)
Cause
There is a short circuit between MSTAY or MYOA input 2 and the end of line resistor.
Solution
Check the correct connection of the MSTAY or MYOA elements connected to it, verify
the correct assembly of the end of line resistor, 33 K
(see chapter 1.5.4.2 and 1.5.4.3).
The MSTAY and MYOA voltage input 2 for proper operation should be between -5 V
and -7 V at rest.
TECHNICAL FAULT
(IN2 input to the MSTAY has been activated)
Cause
A signal external to the addressable detection system has activated the MSTAY IN2 input.
Solution
This is not a fault in the addressable detection system, in fact this is how it should
normally work. Check the operating status of the devices connected to the MSTAY (IN2).
(see chapter 1.5.4.2)
