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Disconnecting the Charge Controller
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Disconnecting the Charge Controller
Before disconnecting batteries and the PV array from the unit, ensure the XW
SCC is not charging the batteries. If the XW SCC is charging, you can wait until
the charge cycle is complete or the XW SCC displays “Low Light,” or you can put
the unit into standby mode. Standby mode shuts off the XW SCC output. The XW
SCC can be put into standby mode using the XW SCC Device Menu or the MPPT
Setup Menu on the XW System Control Panel.
If the XW SCC is charging when the batteries are disconnected with a DC
disconnect switch, an over-voltage output fault occurs due to the load on the XW
SCC output being removed. After approximately 10 seconds the XW SCC LCD
goes blank and the XW SCC loses power.
Normal operation resumes when the battery is reconnected.
If the unit is not charging, the charge controller simply shuts down when the
batteries are disconnected. No faults are generated.
WARNING: Shock hazard
Ensure both the PV array and the batteries are disconnected from the XW SCC before
servicing the XW SCC or the batteries. After disconnecting the batteries, the XW SCC can
appear de-energized when the PV array is still connected.
WARNING: Shock hazard
After disconnecting power from the XW SCC, wait at least four minutes before attempting
any maintenance or cleaning or working on any circuits connected to the unit. Internal
capacitors remain charged for four minutes after disconnecting all sources of power.
Summary of Contents for XW-MPPT60-150
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