• ADM loop technology with
System Sensor/200 protocol
• 4 independent line-monitored inputs
• 4 independent outputs with patented
monitoring of line resistance and
load resistance
• Optimized for use in extinguishing
systems
• Supply supervised for undervoltage
Description
The Multi Module MEA244-1 has been designed espe- addresses on the ADM loop. During commissioning, the
cially for use in extinguishing systems. It has 4 indepen- base address, which is assigned to input 1, gets ente-
dent inputs for connection of contact detectors, and 4 red using a key, all further addresses are automatically
independent, powerful outputs for actuation of external assigned by the module.
control devices.
The MEA244-1 and the connected control devices are
The inputs are monitored to detect wire breakages and supplied through an external 24V power supply. The
short circuits of the connection leads. On the outputs supply voltage gets supervised for undervoltages. If the
the internal resistances of the control devices and the voltage drops below the threshold of the undervoltage
line resistances are monitored separately. An automatic detection, then this event is automatically signalled to
calibration procedure, which gets started by pressing the control panel, via the loop, as fault of all four out-
a key during commissioning, determines the reference puts. Each input and each output has a status LED.
values of both resistances. The patented method of
multiple monitoring makes the reliable detection of line The multi module is available in two versions:
or load faults as well as contact corrosion possible.
• The MEA244-1/TR has been designed for mounting
on a DIN rail,
The multi module is used as loop element with inte- • the MEA244-1/E can be mounted in a control panel
grated dual-isolator, in an ADM loop with System Sen-
sor/200 protocol. The module occupies 8 consecutive
using the supplied mounting spacers.
Building Safety. Building Security.
A
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