Module Supervision - DSC PC5720 Installation Manual

G E T
Normally Open Class A Loops
The two Normally Open Class A Loops (Zones 15 and 16) function as follows:
• Restored States
A1+ is shorted to A1-.
B1+ is shorted to B1-.
There is a Normally-Open contact between A1 and B1.
A2+ is shorted to A2-.
B2+ is shorted to B2-.
There is a Normally-Open contact between A2 and B2.
• Alarms
If the Normally-Open contact between A1 and B1 is shorted a Z15 Alarm will result.
If the Normally-Open contact between A2 and B2 is shorted a Z16 Alarm will result.
Note: A short from either A1+ or A1- to either B1+ or B1- will cause an alarm to occur. This is also
true to A2 and B2.
• Troubles
If either of the shorts on A1 (+ to -) or B1 (+ to -) is removed, a Z15 Trouble will result.
If either of the shorts on A2 (+ to -) or B2 (+ to -) is removed, a Z16 Trouble will result.
Tamper
There is no tamper input for the PC5720.

Module Supervision

The PC5720 will not be supervised as a single unit unlike the other Power832 modules. It will be
supervised as a PC5400 (printer) or alternate communicator (DVAC) and zone expanders 1 and 2
(zones 9-12, zones 13-16). These three areas of supervision correspond to supervision zone lights
[20] (printer) or [22] (alternate communicator), [9] and [10] when all modules are displayed by
entering [ ] [8] [Installer's Code] [903]. The supervision restorals of all modules will be transmitted
through the DVAC line (if used).
In order for the PC5720 to be supervised, you must follow the supervision procedure. For details,
please refer to your panel's Installation Manual.
If the PC5720 loses communication with the main panel, a Keybus fault will be transmitted through
the DVAC line. The PC5720 (the alternator communicator and zone expanders 1 and 2) will go into
supervisory fault. All events which occur during the Keybus fault will not be transmitted through the
DVAC line. Once communications have been restored, a Keybus fault restoral will be transmitted and
the PC5720 (alternate communicator and zone expanders 1 and 2) will be restored from supervisory
fault.
If the PC5720 loses communications with the DVAC receiver, it will stop supervising the alternate
communicator, causing an alternate communicator supervisory fault. When communications are
restored, an alternate communicator supervisory fault restoral will be sent.
T I N G S T A
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R T E D