Description
System Sensor M200XE Loop Isolation Module
There is a large number of System Sensor intelligent fire alarm systems the address loop with a recipient device (up to 198) is protected by a single one loop interruption, but in the case of loop short circuit the entire loop it may become inoperable. With the M200XE modules, shorting is not desired can be reduced.
Only a small part of the system falls out if the loop is broken down into isolators, because in the case of a possible loop, only the two isolators will not be available to the control panel. If the address loop voltage drops below 7V, the isolator module – with FET on the ‘+’ branch, breaks it off the loop, in the non-short-term part of the address loop, the assets remain operational. If the breakdown the loop voltage rises on one side of the module, then the separated (short-circuit) loop section 3 mA (max. 15 mA) control current flows through the module.
In isolation, the address loop + wires between min. 2.2 kOhm resistance. The isolated state is maintained until the voltage of the disconnected section is 7V (the short-circuit or the abnormally high current consumption ceases to exist). After the termination of the termination, the isolator disengages the loop automatically.
The two-colour LED on the module flashes green in the normal state of the loop every 3 seconds. If the module on any side it detects a short-circuit, it illuminates with continuous yellow light during the shutter. The M200XE module in the M200E-SMB mounting box is wall-mounted with the M200E-DIN clip directly on the DIN rail, M200E-PMB clip can be mounted in the fire panel’s box.
