RFL Electronics GARD 8000 - Ga Rd System a Larms

Module Descriptions
GARD 8000 SYS RFL Electronics
April 23, 2015 6-45 973.334.3100
6.10 GARD SYSTEM ALARMS
There are several potential sources for alarms in the GARD 8000 system. Most alarm triggers in the
system can be masked by the user. This means that for a given alarm trigger, the user can decide to
allow the system to generate a Major Alarm, Minor Alarm, or to ignore the alarm altogether.
When the system is in a Major Alarm condition, the web page indicator becomes red and the Major
Alarm relay becomes de-energized.
The system has the following three types of alarm sources:
System Alarms
Logic Alarms
Module Alarms
SOE Alarms
6.10.1 SYSTEM ALARMS
There are two types of System Alarms as follows:
Power Supply Failure
Logic Bus Alarm.
6.10.2 LOGIC ALARMS
The user can identify up to 192 trigger points in the system. The triggers can be individually
configured to generate a Major Alarm, Minor Alarm or no alarm (SOE trigger only).
6.10.3 MODULE ALARMS
Each module can report a Major or Minor alarm. This information is sent over the Control Bus and is a
status condition only. The time critical alarms should be handled by the logic functions. Not all
modules generate alarms.
The criteria for a module going into Major or Minor alarm is hard-wired into the module and cannot be
changed by the user. However, how the system reacts to these alarms is controlled by the user. For
each alarm type on each module, the user can select if he wants to put the system into Major Alarm,
Minor Alarm, or to ignore the module alarm. This means that a user can configure the system to go
into a Major Alarm if one Comms I/O goes into major Alarm, and to ignore another Comms I/O
reporting a Major Alarm.
The user, programs the GARD 8000 alarms using the Alarm Configurations Webpage shown on the
following page and described in paragraph 7.4. The webpage is reached from the Chassis
Configurations Webpage, and then by selecting Settings, and then selecting Alarm Configurations.
See table 6-21 for Module Level Alarms in the GARD chassis with a brief description of how they are
generated.