Internal Feedback Failure Alarm; Open Dc Circuit Breaker Alarm; Open Ac Circuit Breaker Alarm - Optional; Dc Power Supply Failure Alarm - HindlePower ATevo Series Operating/Service Instructions Manual

7.5.8 Internal Feedback Failure Alarm

This alarm is activated when the Main Control Board (A1) senses the
(pre-filtered) internal voltage is out-of-range. The internal voltage
is always measured inside the ATevo, before the dc output filter
circuitry. This failure typically indicates a problem with the voltage-
sense resistors. Set points for this alarm are not adjustable.
7.5.9 Open DC Breaker Alarm
This alarm is activated when the Main Control Board (A1) senses that
the DC Output Circuit Breaker (CB2) is open. The set point for this
alarm is not adjustable.
7.5.10 Open AC Breaker Alarm - optional
This alarm is activated when the Main Control Board (A1) senses that
AC Input Circuit Breaker (CB1) is open. The set point for this alarm is
not adjustable.

7.5.11 DC Power Supply Failure Alarm

This alarm is activated when the Main Control Board (A1) is not
sensing power from its internal dc voltage source. ATevo is powered
by both ac and dc sources. It uses the ac power source when one is
available, but diverts to the dc source (P/S-9V) when there is no ac.
ATevo may be operating when this alarm is active, but it may fail
when the ac power is removed. Set points for this alarm are not
adjustable.

7.5.12 SCR Failure Alarm

This alarm is activated when the Main Control Board (A1) detects
that the Rectifier Assembly (A6) is not working. This may indicate
a defective SCR or issues with the SCR firing control or driver. Set
points are not adjustable.

7.6 Resetting Latched Alarm Relays

Latched alarm relays can be reset or cleared two (2) different ways.
• The Legacy AT10.1 method may be used by pressing and holding
the UP arrow button for a few seconds. This will reset or clear all
latched alarm relays. A brief confirmation message will display.
• Individual latched alarm relays or all latched alarm relays may
also be reset via the RELAYS icon from the Main Menu.
7 Alarms & Indicators
ATevo
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