4EVAC Loopdrive 4E-LDB - Table of Contents

Loopdrive – User and installation manual
1
Contents
1. Loopdrive introduction ................................................................................................................ 2
1.1. Loopdrive components ........................................................................................................ 3
1.2. Main functionality ................................................................................................................. 5
1.3. Loopdrive indications ........................................................................................................... 6
1.4. Fault contact.......................................................................................................................... 7
2. Installation and commissioning ................................................................................................... 8
2.1. Cables .................................................................................................................................... 8
2.2. How to install LDB in the Voice Alarm System ................................................................... 8
2.3. How to install FIMs on a loudspeaker li n e ........................................................................ 10
2.4. Examples of Loopdrive installations .................................................................................. 13
3. Routine maintenance i nspec ti on ............................................................................................... 14
4. Fault finding – LDB ..................................................................................................................... 15
4.1. SHORT fault......................................................................................................................... 15
4.2. OPEN fau l t ........................................................................................................................... 17
4.3. EARTH fault ......................................................................................................................... 17
5. Fault finding – F IM ...................................................................................................................... 19
5.1. Short loop............................................................................................................................ 19
5.2. Short on T-Branch .............................................................................................................. 19
5.3. Open T-Branch.................................................................................................................... 20
6. Technical s peci fi cati ons .............................................................................................................. 21