LST LIF128-1 user manual

Summary of the content on the page No. 1

Loop Interface
LIF128-1
• Intelligent analogue loop technology
• Several loop protocols for the
detector brands System Sensor,
Apollo and Labor Strauss
• Up to 318 elements on the loop
• Integrated measurement of loop
resistance, loop current and quality
of transmission
• Maximum loop current 500mA
Description
By means of the Loop Interface LIF128-1, one ADM loop By means of an integrated measuring and analysis func-
with bi-directional data exchange can be connected to tion, electrical ch

Summary of the content on the page No. 2

Usually, the loop wiring is realised as ring. Thanks to the by means of isolators, can be maintained. The control ring-shaped wiring, all elements on the loop keep wor- panel indicates a wire breakage or a short circuit as king in the event of a single wire breakage. If necessary, loop fault. branch lines can also be connected to the ring. Unshielded wires can be used for the fi re detector ca- In the event of a short circuit, the functioning of the loop bling and, therefore, existing installat