Ziton ZP752-2 Addressable Sounder interface

The Ziton ZP752-2 is a loop wired interface providing two conventional alarm circuits. It may programmed to operate from a single address, a group or zone of devices or as a common output, from any trigger device connected to the system.

Power for the alarm circuits is supplied either from an external power supply unit, or directly from the panel's 24VDC supply via separate wiring. The ZP752-2 monitors its power supply and failure is reported to the main control panel automatically.

On operation, both sounder circuits are simultaneously activated. A red LED indicator is illuminated on the front of the unit to confirm operation.

Any number of ZP752-2 units (up to a max of 127) can be connected to the ZP loop. In systems complying with the recommendations of BS5839-1, where sounder response to the operation of a manual call point must be within 3 seconds, up to 16 ZP752-2 output units, assigned to the first 16 addresses on each loop can be operated within the time period.

Wiring is monitored for open and short circuit faults by means of end of line resistors. Faults are automatically reported to the control panel, together with the address of the ZP752-2 interface. An amber LED indicator on the front of the moulding is illuminated to indicate the fault condition.

Designed for first and second fix installation, the unit comprises an open back box containing all wiring terminals together with a front plate enclosure of high impact plastic, housing all electronics, PCBs and selection switches. The two parts plug together prior to system completion.

All loop devices incorporate switch settings enabling them to be assigned a unique address which is polled by the panel every two seconds.