Chapter 2: Installation
30
Phason
Correct three-phase wiring
Incorrect three-phase wiring
Connecting alarm systems
An alarm system can be a siren, an alarm panel, or an auto-dialer. Read your alarm siren’s installation
guide for installation instructions and information about the type of system, normally open or
normally closed. The descriptions for the alarm terminal are as follows:
CC
–common connection,
CA
–closed on alarm,
OA
–open on alarm.
For the alarm system to sound (or dial out) during an alarm condition, you must
enable the alarms for each zone. For more information, read
The ratings of the alarm system must not exceed the ratings of the Supra
’s relay.
Supra alarm relay ratings
: 0.4 A at 125 VAC; 2 A at 30 VDC, resistive load
0.2 A at 125 VAC; 1 A at 30 VDC, inductive load
To connect an alarm system
If you are connecting the alarm system to a network of Supras and your system uses a
normally
open
connection (closes on alarm), connect the system as shown in the normally open diagram.
Join all the common (
CC
) connections together and all the closed-on-alarm (
CA
) connections
together. The Supra alarm relays must be in parallel with each other so any Supra can trigger the
alarm system when an alarm condition occurs.
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