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Alarms and Errors
975-0200-01-01 3-17
3
Alarms and Errors
Several conditions can cause alarms in the XTR. Some conditions are:
• From user configurable features.
• Controlled in hardware and will trigger regardless of configuration.
All alarms, with the exception of the Fan alarm, will result in the output of
the power supply being disabled. The Fan alarm does not affect the output.
When an alarm is triggered, the appropriate alarm message will begin
blinking on the display and the Alarm LED will be illuminated.It is
possible that more than one alarm will trigger at the same time. When this
occurs, the alarm with the highest precedence will blink on the display.
Table 3-4 lists the precedence of alarms. If the alarm is cleared and the
event which caused the alarm has not been corrected, then the alarm may
trigger again immediately. Fix the reason for the alarm before you clear it.
Table 3-4
Alarm Order of Precedence
Alarm Precedence Output
Latch
Maskable Display
AC Fail 1 (Highest) Ye s No
AC Fail
Over Temperature Protection (OTP 2 Yes Yes
O7P Pro
Over Temperature Protection (OTP) Slave
(1700 W version only)
3 Yes Yes
O7P Pro
Fan 4 No Yes
FAn Pro
Fan Slave (1700 W version only) 5 No Yes
FAn Pro
Interlock 6 No No
In Loc
Over Voltage Protection 7 No No
OVP Pro
Over Current Protection 8 No No
OCP pro
Foldback 9 Yes Yes
FLD Pro
External Shutdown 10 (Lowest) No Yes
SD POL
Flash Checksum Failure
1
1.The Flash Checksum Failure alarms are an exception as they are a terminal alarm that can only
occur during boot up. It can only be cleared by doing a soft reset (losing the configuration of the
unit) or by power cycling the unit.
N/A N/A N/A
FLA FAIL