Biamp CI-1 - Manual (Page 6)

6
REAR PANEL
There are four main interconnection paths to the rear panel:
!" $4//);6,4/-"64"69)"<()"C)6);6,4/"-A-6)D"J$%KLM
!" Connections from external devices for fault indications
!" Connections to the LSI­16
!" Power supply connections
Each of these connection paths has several circuits as detailed below.
Fire Detection System (CIE) Connections
B9)-)";,(;+,6-".()"5(4E,C)C"4/"6?4"Isolated Ground provides a circuit return that is not directly connected to the CI­1
and LSI­16 Ground.
#:.(D"%/5+6-"'"69(4+=9"N".()"-,=/.:-"3(4D"69)"<()"C)6);6,4/"-A-6)D7"B9)-)"-,=/.:-"
5:.;)"69)">4;,."-A-6)D",/64")D)(=)/;A"D4C)".;;4(C,/="64"69)";4/<=+(.6,4/"
determined for the input in Vocia software. The Alarm Reset Input cancels all active
alarms in the system while the Alarm Silence Input maintains all active alarms but
causes emergency messages to be silenced. The CI­1 provides the necessary
terminating resistors for each input. Inputs are asserted by a positive transition
to 12­24V with respect to the ‘Isolated Ground’ connection. This transition should
preferably be derived from a dry contact closure to a remote 12V­24V source, or
to the CI­1 24V Reference Out (see below).
B9)">4,;)"#:.(D"#;6,E)"4+65+6",-"5(4E,C)C"64"-,=/.:"64"69)"<()"C)6);6,4/"-A-6)D"69.6"
the Vocia system has been activated in emergency mode in response to an Alarm
Input. A constant output denotes that an emergency message is playing. A pulsed
output (1.25Hz) indicates that an alarm is active but emergency messages have
been silenced.
B9)"O)/)(.:"P.+:6"Q+65+6",-"5(4E,C)C"64"-,=/.:"64"69)"<()"C)6);6,4/"-A-6)D"69.6"69)()"
is a fault in the Vocia system that could affect delivery of an emergency message.
The Voice Alarm Active and General Fault outputs pull low (to ground) when active.
The outputs are monitored by the LSI­16 for open­circuit or short­circuit to ground or
power supply and for over­voltage on the output pin (>35V DC). If incorrect conditions are detected a Fault is signaled. Output monitoring
3.;,:,6.6)-";4D5:,./;)"?,69"E4,;)")E.;+.6,4/"-6./C.(C-7"P4("D4/,64(,/="5+(54-)-".":4.C"JD.F,D+D"RRSTL"D+-6"G)";4//);6)C"G)6?))/"
each output and a positive voltage source referenced to the LSI­16 Ground, at the far end of the connection to the CIE (i.e. at the CIE).
#/"0KU",/C,;.64(";4//);6)C"69(4+=9"."()-,-64("64"."54-,6,E)"E4:6.=)".6"69)"$%K"?,::"-+3<;)".-"."D4/,64(,/=":4.C7"
V46)"69.6"69)"01%&'2"5(4E,C)-"."'W>"-4+(;)".6"69)"X'W>"Q+6Y"6)(D,/.:"4/"69)"01%&'27"Q+65+6-"D.A"G)"5+::)C"+5"64"69,-"-4+(;)M"94?)E)("69)"
total current drawn from the source must not exceed 100mA. If an external voltage source is used for the outputs, it must not exceed 35V
DC and in addition to the output loads, must also be connected to the LSI­16 ‘External Supply Over­voltage Monitor’ input (refer to LSI­16
User Manual) for monitoring purposes. Due to monitoring constraints, it is not possible to use both the LSI­16 internal 10V source and an
external source.
Connector
Label
Function
Isolated Ground
A1 Alarm 1 Input from CIE
A2 Alarm 2 Input from CIE
A3 Alarm 3 Input from CIE
A4 Alarm 4 Input from CIE
Rs Alarm Reset Input from CIE
Si Alarm Silence Input from CIE
Ground
VA Voice Alarm Active Output to CIE
GF General Fault Output to CIE