User guide

Verifying the Loops

Commissioning Handbook, AutroSafe Interactive Fire Alarm System, Release 3, P-ASAFE/EE Rev. E, 2005-02-16,

Autronica Fire and Security AS

Page 5

2. Verifying the Loops

2.1 AS-2000 Loop Diagnostic Tool

All loops should be verified with the AS-2000 Loop Diagnostic Tool

before startup. Although this is presumably already done at an earlier

stage (shortly after the installation), it is recommended that all loops

are verified once again in case minor changes have been done. By

doing this, you will eliminate possible problems during the startup

procedure and downloading of configuration data.

The AS-2000 allows you to find all points connected to the selected

loop driver, and present them graphically.

AS-2000 can be run when connected to an AutroSafe operating panel

(Fire Alarm Control Panel BS-310/320), or standalone Fire Alarm

Control Panel / Controller connected to a selected loop with a

separate interface unit.

2.2 Verification Procedure

Pressing the START button in the Topology window (AS-2000) tells

AS-2000 to find all points connected to the selected loop driver, and

present them graphically in a correct electrical sequence. Points will

be presented with unique symbols for each type of Loop Unit, and with

important information such as Production Number (PN), and the Loop

Sequence Index (LSI). In case of illegal topologies, like multiple

branch-off and loop break, these will be presented with self-explaining

symbols.

Use the AS-2000 to;

− the Loop Unit type

(detector type, manual call point, electronic sounder, I/O unit)

− Loop Sequence Indexes LSI

(order/location)

• register all branch offs and loop break positions

• locate any breaks on the loop wire (both positive and negative

wires)

• measure the loops’ total resistance, current consumption and

voltage drop

You will find detailed information on the installation and use of

AS-2000 in the User Guide, AS-2000 Loop Diagnostic Tool.