68P80801E30-A 5/1/2002 3-23
Gen 3 Site Controller System Manual Chapter 3 Pre-Installation
Alarm Wiring
Alarm System Wiring
Alarm wiring fitted with modular (8-pin Telco) connectors terminate at the
EAS/EAS2. All other connections are designed to terminate at a punch
block.
Each of the site alarm contacts are normally closed and connected to the
EAS/EAS2 through a 50-pin Champ cable that connects to a punch block.
All alarm contact pairs must be dry (isolated from ground). Most alarm
connections are inputs. Outputs provide a dry relay closure rated at
0.5 Amps, 30 Vrms or 60 Vdc, 10VA max.
Four outputs on the User Alarm/Control and System Alarm/Control
connectors are available for customer-defined applications. Diode
suppression of inductive surges is required if anything but a resistive load is
connected to this output.
Eighteen customer-defined alarm inputs are available on the
User Alarm/Control connector. The alarms are reported to the Operations
and Maintenance Center (OMC) by the respective alarm code. The OMC
must be programmed with the proper alarm name corresponding to each
code. All connections on User Alarm/Control and System Alarm/Control
connectors must be defined and provided to the OMC to insure the
effectiveness of monitoring those alarms.
The punch blocks are wired during pre-installation. Each alarm is connected
to a pair of terminals on the punch block, the upper one of the pair represents
the return and the lower one represents the hot side. For example, on the first
numbered pair of the punch block 26 represents return and 1 represents the
hot side. The punch block wiring as it appears within this manual is the
recommended wiring.
To Next Page
Loading...
Need help?
General
