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User Guide
A272-366
DEVICE ALERTS
Device Alert
Supply x
Short Circuit
1
Protection Active
Supply x
Output Overvoltage
1
Protection Active
Supply x
Over Temperature
1
Protection Active
NV Integrity Error
Note
: X refers to power supply 1 or 2.
1
Emerson.com/SolaHD
Probable Cause
Short circuit fault occurred at
the output of the power supply.
This is triggered when the load
current is greater than 150% of
the rated load.
The output voltage of the power
supply is greater than 32V for
SdN10 and 35V for SdN20.
Internal temperature of the
power supply exceeding safe
operating levels. This occurs
when the main transformer
temperature exceeds 125°C.
The nonvolatile memory was
defaulted which will result in
factory default configuration for
the device.
4. TROUBLESHOOTING
Corrective Action(s)
Check the load associated with the
power supply. If the load is more than
the power supply capacity, either
distribute the load with another
power supply or opt for power supply
having higher capacity.
Check power supply DC output wiring
connections, try to adjust the voltage
and replace power supply if necessary.
Check the power supply load, if
nearing or crossing the load
capacity, distribute the load among
multiple supplies.
Check ventilation and ambient
conditions for the power supply.
Replace the power supply if necessary.
Perform a "Master Reset" of the
communication module using AMS
Device Manager or power cycle the
communications module by removing
the cables coming from SDN-D power
supplies and plugging them back.
If alert condition persists, replace the
communication module.
8/2022
Page: 29
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