211110 – Loop Interface LIF601-1

The Loop Interface LIF601-1 supports one ADM loop with bi-directional communication in Fire Detection Control Panels Series BC600. The protocol for the loop communication is set through the parameterization of the control panel and it determines the maximum number of detectors and modules that can be connected to the loop

240 physical address points (detectors or modules) with Labor Strauss/700 protocol

318 physical address points (159 detectors and 159 modules) with System Sensor/200AP protocol

126 physical address points (detectors or modules) with Apollo/Discovery protocol

The loop allows connection of manual call points, automatic detectors, input and output modules, RF gateways and signalling devices in loop technology. Usually, the loop is wired as ring with unshielded 2-wire cables; if necessary, branch lines can also be connected to the ring without additional devices. Each loop can be divided into a maximum of 200 detector zones. Thanks to the high maximum output current of 500mA, a larger number of loop elements with higher current demand – such as sirens – can be used on the loop

In addition, the Loop Interface LIF601-1 is equipped with 8 freely parameterisable open-collector outputs for general control tasks. Extensive measuring functions for obtaining electrical characteristics, as well as analysis functions are integrated into the loop interface. On the LC display of the Fire Detection Control Panel Series BC600, the resistances of the positive and negative loop line, the present loop current, the loop voltage at all terminals and the relative frequency of faulty queries on the loop can be indicated. With that, the quality of the loop cabling and of the data transmission can be evaluated in the course of commissioning or maintenance. In this way, for example, lines that are too long or poor wiring can be detected easily

Independent microprocessor to ensure the alarming capability of every detector even at system failure of the control panel

Full function of all elements in the event of a single wire breakage on the ring-shaped loop line

On the componentry, the start and the end of the loop are each provided with an isolator module

In the event of a short circuit on the loop line, only the loop elements in the faulty line section, that is cut off from the loop by means of isolators, are affected in their function

Alarm threshold tracing for every single smoke detector on the loop according to its individual contamination

The sensitivity of every smoke detector is thus held constant over a very long period of time and deceptive alarms are avoided

Maintenance prognosis by means of processor-aided interpolation of data concerning the trend of contamination for every single smoke detector on the loop. This way it is possible to predict the next maintenance date with a high degree of probability which in turn results in major cost savings in maintenance during the lifetime of the fire detection system

Alarming capability of every detector can be checked from the fire detection control panel

All inputs and outputs accessible via pluggable screw terminals or flat cable connector