MP500/4N-8-16 Installation
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5.11.3.2
The Repeater
The Repeater circuit regenerates the data and provide power for the extension of the new length of Bus for the control panel (drawn from the
power supply and the local battery). By referring to the
, the functions of the terminals and LEDs dedicated
to the Repeater are the following:
Terminal board
Group
Terminal
Connection/Function
M8
OUT BUS
+
Bus extension power supply
+D
BUS Data transmission/reception
D
─
Bus extension power supply
LED
data
IN
TX
Green LED (TX BUS control panel)
(data transmission to control panel)
RX
Yellow LED (RX BUS control panel)
(data reception from control panel)
OUT
TX
Green LED (extended TX BUS)
(data transmission to extended BUS)
RX
Yellow LED (extended RX BUS)
(data reception from extended BUS)
The BUS OUT terminal board is used to connect the various devices to the new length of the Bus. The signals coming from the Bus of the
control panel are repeated to be transported a long distance, with the MP500/8 and MP500/16 control panels having complete control.
The Repeater section is irreversibly linked to the power supply section
“P”,
which also provides it with power. Therefore, in case of a
blackout or absence of the back-up battery, it will not be possible to reproduce the data on the Bus (essentially the extension of the bus
is lost together with all the devices that are connected to it).
5.11.3.3
Power supply
The power supply circuit controls the power supply and the power supply outputs, and also manages the battery.
More specifically, when the battery is charging, it carries out the efficiency test and, when there is a blackout, it disconnects the battery
when the voltage to the battery terminals reaches about 10.5 V, thereby protecting it from the deep discharge.
The battery will be automatically recharged when the mains power supply is restored.
By referring to the
, the functions of the terminals and LEDs dedicated to the Power supply are the
following:
Terminal
board
Group
Terminal
Connection / Function
M5
Battery
+BT
Back-up battery power supply input (positive pole)
- BT
Back-up battery power supply input (negative pole)
M6
Power supply
+PS
Power supply input (at the positive terminal of the power supply)
+PS
Power supply input (at the negative terminal of the power supply)
M7
Outputs
Auxiliaries
+SR
Power supply (14.4 V
⎓
limited to 200 mA) for recharging the batteries of the self-powered
devices (ex. sirens).
It is possible to connect up to 2 self-powered sirens.
Important:
In case of blackout, +SR supplies no voltage, therefore it must be used only to
connect self-powered devices.
The self-powered devices must have a positive anti-return diode in series.
Note:
all the Elkron self-powered actuators come equipped with this device.
-
+
2 Auxiliary power supplies (limited to 750 mA)
-
LED
Green
PWR
Network/battery presence
Yellow
BL
Battery state
Yellow
FUSE
Power fault +SR; +; +BUS OUT; +D