LSI-16 setup and wiring guide
This wiring guide explains the instances in which the Vocia Life Safety Interface (LSI-16), the enhanced Life Safety
Interface (LSI-16e) and the Control Interface (CI- 1) should be used, and describes the connections that are required for
correct operation.
The functionality of the LSI-16/LSI-16e has been tailored to the specific requirements in the EN 54-16 European life
safety standard. However, the LSI-16, LSI-16e and CI-1 are still applicable in installations that require highly reliable and
fault-tolerant systems with voice evacuation functionality, even if there is no need to meet EN 54-16 standards. Some
terms are specific to EN 54-16, for example, General Fault, General Alarm, Protection Fault etc and may not be
applicable for your jurisdiction. This document attempts to explain the operation of the Vocia emergency system so it
can be used for life safety purposes in other jurisdictions.
Alarm inputs and faults
A "fault" is a problem that may impede the Vocia system from performing its role as a Voice Alarm Control and Indicating
Equipment (VACIE), and an "alarm" is a condition that has been triggered via an external stimulus, generally from the
fire detection system or Control and Indicating Equipment (CIE).
Alarm Inputs
A Vocia alarm is any input from the fire panel to the four emergency inputs on the LSI-16/LSI-16e (control input pins 5 -
8). The Vocia Alarm state is triggered by a low to high transition on the emergency inputs, with the high state between
14V and 24V. These four inputs are used to connect to the fire alarm control and indicating equipment (CIE) to notify the
LSI-16 that an alarm has occurred in a particular zone. When an alarm is detected, the Vocia system will cease normal
operation and will enter Emergency Mode. An emergency input on the four control inputs can be configured to mute the
zone or play one emergency message (see figure below). Any unused emergency inputs must be terminated, disabled
in software or attached to a CI-1.
Additional general purpose inputs for use as alarm inputs are available on the LSI-16e or by adding the IM-16 to the
LSI-16. These sixteen general purpose inputs can be programmed to play an emergency message, mute or reset an
emergency zone. You can have up to 10 inputs into a single emergency zone (see figure below). The general purpose
inputs can be programmed as TTL, high range or monitored high range. Monitoring is available for short to ground and
open circuit.
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