Operation
4–10
975-0400-01-01
Batt Under Volt
The Batt Under Volt (Battery Under Voltage) Fault appears
when the battery voltage falls to the nominal battery voltage,
minus 4 V per 12 V (for example, below 32 V in a 48 V system)
for 1 second. The fault clears when battery voltage rises to the
nominal battery voltage, minus 3 V per 12 V for 2 seconds. You
can also clear this fault manually, except when battery voltage
falls below the minimum XW SCC operating voltage of 10 V.
The Battery Under Voltage fault notifies you if the XW SCC is
configured with the incorrect battery voltage.
If this fault appears, check that the “Battery Voltage” setting is
correct for your system. If the Battery Voltage setting is
incorrect, correct the setting under the Battery Menu. When
battery voltage is set properly, the fault will clear itself.
If the battery voltage setting is already correct, then the batteries
are excessively discharged. In this case, you can manually clear
the fault and let the XW SCC charge the batteries when
sufficient solar power is available. You can also shut off any
loads connected to the system and charge the batteries with
another charger.
Output Over
Current Fault
Output Over Current Fault appears when the output current rises
above approximately 90 A.
The fault clears when output current falls below 5 A for three
seconds.
Unit Over
Temperature Flt
The XW SCC monitors its internal temperatures to protect
components from high temperature damage. If the internal
temperatures rise above 203 °F (95 °C) while operating in
Charge mode, the XW SCC registers a fault and stops producing
power. The fault clears when the internal temperature falls to
185 °F (85 °C) for at least 10 seconds.
Battery Over
Temperature Flt
Battery Over Temp Fault appears when the battery temperature
reaches 140 °F (60 °C). The fault clears when the battery
temperature falls to 131 °F (55 °C).
Battery Setup
Conflict Fault
Battery Setup Conflict Fault appears when you have configured:
•
more than one charging device on the same battery bank
with an inconsistent nominal battery voltage setting
•
an inconsistent battery type setting.
Aux Output Ovld
Auxiliary Output Overload Fault. This fault appears when too
much current is being drawn from the auxiliary output. The fault
triggers when the auxiliary output voltage falls more than 1 V
below the auxiliary output voltage for three seconds.
Ground
Fault
Ground Fault appears when a ground fault causes the ground
fault protection (GFP) fuse to blow. The Ground Fault message
clears after system power is removed, the ground fault is
corrected, the GFP fuse is replaced, and system power is
restored. See Troubleshooting.
Table 4-6
Fault and Warning Messages
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Description
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