LST Network Card MEA244 1 User Manual

Mult
i
M
odule  
MEA244-1  
• 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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MEA244-1_DBL_LST_EN_0823.PDF • PAGE 1  
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