Tyco RDU Mk2, Инструкция по установке и программированию, Страница: 119 / 178

Document No: LT0499 RDU Mk2 Installation & Programming Manual
Programming Part 2
Issue 1.02 8 April 2015 Page 7-23
7.5 OPERATION OF WARNING SYSTEM/EXTERNAL
BELL & ANCILLARY RELAYS
AS4428.1 introduced two new concepts, the Warning System and the External Bell, which
t
he previous AS1603.4 standard did not have. AS1603.4 systems have a “Bells” output
which usually corresponds to the External Bell in AS4428.1.
The purpose of the AS4428.1 Warning System is to evacuate people from the building when
an alarm occurs. The purpose of the External Bell is to help the Fire Brigade locate the fire
panel where an alarm has occurred. In an AS4428.1 F3200 system, the Ancillary 3 relay
(Bells) is normally used for the Warning System and the Ancillary 2 relay for the External
Bell. The Ancillary 3 relay has different supervision to Ancillary 1 and 2 and can supervise
multiple connections, which is why it is used for the Warning System. The External Bell
normally has only a single bell connected.
There is a set of "Pass-on FIP, Follow FIP, local control" configuration parameters that affect
the operation of the Warning System and External Bell. Refer section 6.4.4.3.
New Zealand Operation
For New Zealand operation, Silence Alarms and Trial Evacuation Brigade switches always
map to the Warning System and never to the External Bell. For New Zealand operation, the
operating mode is normally set to AS4428.1 as this is compatible with NZS4512:2003.
7.5.1 OPERATION OF THE WARNING SYSTEM FOR AS4428.1 OPERATING MODE
Australian Operation
For an RDU with a MAF board the Warning System maps to the ancillary 3 relay implicitly,
but can be overridden by a logic equation if necessary. If there is no logic equation for the
ancillary 3 relay then the relay is off if the ancillary 3 relay is isolated. Otherwise, if WSO is
true and WSS is false, the ancillary 3 relay is activated, otherwise the ancillary 3 relay is off.
WSS is true if

The Warning System is locally isolated, or

The FIP Warming System is isolated and the RDU is programmed to follow the FIP
Warning System isolate state.
WSO is false if WSS is true or if there is no MAF board installed, otherwise, WSO is true for
any of the following.

Any zone mapped to the Warning System is in alarm, or

When the FIP Warning System is activated and the RDU is programmed to follow the FIP
Warning System state, or

A Warning System test is done at the RDU.
WST is true when a Warning System test is initiated locally.