They allow a maximum current of 350mA and a voltage of 350V.
d) RS-485/MODBUS Interface
Communication port on RS-485 half-duplex base for communication with fire control
panel. It needs to be connected by 2 twisted wires (A, B) plus a GND wire.
The port uses protocol MODBUS RTU and is used to connect a fire central with
advanced commands. LDA will provide an advanced manual for this function.
2.2.4 Speaker line outputs, zones
The equipment has
6 zone outputs
. Each line connection has two ter and –
for the speaker connection in 100V or 70 V speaker lines.
The total power of the equipment can be distributed in the departures of zones
according to the design of the installation without exceeding the maximum limit per
output: Zones 1 and 2 500W, Zones 3,4,5,6 120W.
The connection is made by means of a 2-pin female euroblock connector and 5.08mm
pitch (supplied with the equipment). The cable section range for each pole of this
connector is: 0.5 2.5mm2 (22 12 AWG).
→
→
NOTE
: Connection should be made in order from zone 1 to zone 6, in other case the
Autosetup funcion will not detect correctly the installed lines.
Output voltage (up to 100 V) can be dangerous, so a correct isolation of the speaker
lines in necessary. Test that there are not short circuits, fake contacts or ground
derivations in any of the lines.
a) Backup amplifier
The system has two power amplifier and a switching system who selects the proper
one in each case. When a amplifier fault is detected the system will use only the working
amplifier selecting the higher priority audio, emergency microphone followed by
emergency message have the higher priority.
7
Illustration 8: Speaker line outputs