Alarms And Errors; Table 3-4 Alarm Order Of Precedence - Xantrex Watt Series Programmable DC Power Supply XG 850 Operating Manual

Local Operation

Alarms and Errors

Table 3-4 Alarm Order of Precedence

Alarm
AC Fail
Over Temperature Protection (OTP)
Fan
Interlock
Over Voltage Protection (OVP)
Over Current Protection (OCP)
Foldback
External Shutdown
Under Voltage Protection (UVP)
Flash Checksum Failure
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.
3-18
Several conditions can cause alarms in the XG. 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.
1
Precedence Output
Latch
1 (Highest) Yes
2 Yes
4 No
6 No
7 Always
8 Always
9 Yes
10 No
11 (Lowest) No
N/A N/A
Maskable Display
AC Fail
No
O7P Pro
Yes
FAn Pro
Yes
In Loc
No
OVP Pro
No
OCP pro
No
FLD Pro
Yes
SD POL
Yes
UUP Pro
Yes
FLA FAIL
N/A
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