Apollo XP95 DIN-Rail Sounder Controller (5 Amperes)

Summary

The DIN-Rail Sounder Controller (5 Amperes) is used to control the operation of a zone of externally powered sounders and report their status to the control panel.

Electrical Description:

The DIN-rail Sounder Controller is loop powered and operates at 17–28V DC. It requires a local power supply of 12–35V DC to power the external load, which may be up to 5A. A polarising diode is required with each alarm device, as sounders are operated by voltage reversal, provided by a double-pole change-over relay. The sounder circuit is protected by a fuse rated at 5A (quick acting).

Operation:

The Sounder Controller allows sounders to be operated continuously or be pulsed, 1 second on, 1 second off. Sounders may be operated individually or in groups and, whichever address mode has been applied, may be synchronised when in pulsed operation. An opto-coupled input is provided to monitor the state of the external power supply. In normal operation the Sounder Controller returns a pre-set analogue value of 16, but in the event of an open or short-circuit fault or of a fault in the external power supply, the unit returns a pre-set analogue value of 4.