8 APPENDIX
8.1 Installation of Safe Area Sounders and Beacons
MCU Control Units have three outputs that are intended for switching alarm sounders and/or
beacons (the MCU4 has six outputs). These alarms take their power from the MCU system,
whereas alarms triggered by the various relays are more suited to supply from external power
sources.
Cable Specification:
1mm conductors should be used between the MCU and sounder/beacon.
Sounder/Beacon Specification:
All Status Scientific sounders and beacons are suitable for internal/external use.
Rated to IP65 Supply Voltage 24V
Terminations:
This wiring diagram shows the interconnection details between the
Distribution Module (situated within an MCU) and sounders/beacons.
Notes
(a) The alarms should only be connected to the Distribution Board with the MCU isolated from
the mains supply.
(b) The maximum number of sounder/beacon units that can be connected to the panel outputs is
two (two sounders and two beacons).
(c) Outputs 1 & 2 of the distribution module are capable of supplying an absolute maximum of
200mA each.
Part Numbers:
SS-367 24V DC Sounder
SS-368 24V DC Sounder/Beacon Combined
SS-369 24V DC Beacon
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