Advanced Alarms; High Voltage Shutdown Alarm; Low Level Detect Alarm - HindlePower ATevo Series Operating/Service Instructions Manual

7.5 Advanced Alarms

ATevo alarms can be divided into two groups, Legacy AT10.1 Alarms
and Advanced Alarms. Legacy Alarms are described in Section 7.1.
Advanced Alarms described in the following sections:
• Do not have dedicated LEDs to indicate when they are active.
• Illuminate the COMMON ALARM LED and activate the common
alarm relay
• Appear on the Active Alarm Bar and Active Alarm List.
• Get stored in the event log along with the time and date they
occur and clear.
• Will be reported by any installed optional protocol
communications board.
• May be configured to activate a discrete relay on optional
Auxiliary I/O Boards.

7.5.1 High Voltage Shutdown Alarm

This alarm is activated when ATevo initiates a High Voltage
Shutdown, provided that feature has been enabled. See Section
4.3.2 for details.
High Voltage Shutdown is initiated by the micro-controller when the
dc bus voltage sensed by the Main Control Board (A1) is higher than
the High DC Voltage set point for a minimum of thirty (30) seconds.
Section 5.2 describes High Voltage Shutdown in detail.

7.5.2 Low Level Detect Alarm

This alarm is activated when the dc bus voltage sensed by the Main
Control Board (A1) is lower than the Low Level Detect set point. See
Section 4.3.5 for details.
The Low Level Detect feature contains dedicated hardware, and
operates independent of microprocessor control. The Low Level
Detect is a true failsafe feature that activates the common alarm
relay in response to a catastrophic failure, such as microprocessor
failure. The Low Level Detect hardware will illuminate a dedicated
LED located on the Main Control Board (A1) when alarm is active.
7 Alarms & Indicators
ATevo
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