Verifying the Loops
Commissioning Handbook, AutroSafe Interactive Fire Detection System, Release 4, 116-P-ASAFE-COMMISS/EGB Rev.F, 2014-04-01,
Autronica Fire and Security AS
Page 8
3. Verifying the Loops
3.1 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 which could occur
during the startup procedure and upgrading 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 connected directly to an AutroSafe
operating panel, or directly to a detection loop by means of an
external interface unit, WAS-2000.
3.2 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-offs and loop breaks, these will be presented with self-
explaining symbols.
Use the AS-2000 to;
register all loop units on each loop, including:
− 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
earth fault
You will find detailed information on the installation and use of
AS-2000 in the User Guide, AS-2000 Loop Diagnostic Tool.
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