EnerSys Alpha FXM HP 1100, Техническое руководство

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0170022-J0 Rev A Page 93
10.2.2 Alarm Cut-off
The Alarm Cut-Off (ALCO) button is used to silence the speaker (if installed) while technicians are
investigating and troubleshooting an active alarm. ALCO can also be configured to deactivate alarm
relays.
ALCO functionality is configured via
Alarms > Alarm Cut-off Settings and Global Alarm Settings .
ALCO can be configured to either:
• Acknowledge active alarms, deactivate relays, and silence speaker
• Or silence the speaker only
When ALCO is pressed, the user configured ALCO period begins to countdown. When the count down
reaches zero the ALCO period expires.
When ALCO expires the configured action is canceled. If you configured ALCO to acknowledge active
alarms, deactivate relays, and silence speaker then alarms return to the active state which means the
alarm relays are activated and the speaker begins sounding. If you configured ALCO to silence the
speaker only, the speaker will start sounding as long as there are active alarms.
If a new alarm activates after ALCO is pressed, the speaker will sound the appropriate alarm tone. Any
existing alarms that have been acknowledged from a previous ALCO press will remain acknowledged.
10.2.3 Alarm Activation Delay at Startup
Depending on system configuration there may be some alarms that activate shortly after startup then
clear a few seconds later. These nuisance alarms are often caused due to the time it takes for the
controller to re-acquire modules on the CAN bus. To prevent these alarms from activating and triggers
relays or SNMP traps there is a setting that delays alarm activation at startup.
The alarm delay is configured under
Alarms > Alarm Cut-off and Global Alarm Settings .
The default value of 30s works for most systems, however this value can be increased to accommodate
systems that have a slower start up time, i.e. large inverter systems.
10.2.4 Alarm Summary Relays
There are three alarm summary relays that can be configured on the controller. These relays are
connected to external monitoring equipment which provides a notification when the controller enters an
alarm state.
• Controller Critical Relay
• Controller Major Relay
• Controller Minor Relay
To view them go to Controller > Configure Controller > Alarms and Alarm Summary Relay .
The relay mapped to the Controller Critical Relay is active whenever one or more critical alarms are
active. Both Controller Major Relay and the Controller Minor Relay work in the same way.
FXM HP Alarms
The following tables describes the configurable alarms.