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TriStar MPPT-600V-TR Operator's Manual
Battery Voltage Sense Failure (R+Y / G+Y)
If a fault in the battery sense connection (such as a short circuit, open-circuit or loose terminal)
occurs after the battery sense has been working, the LEDs will indicate a failure. If the control-
ler is restarted with the failure still present, the controller may not detect that the battery sense is
connected and the LEDs will not indicate a fault. A TriStar meter or the PC software can be used
to determine if the battery sense is working properly.
Settings (DIP) Switch Changed (R / Y / G sequencing)
If a settings switch is changed while there is power to the controller, the LEDs will begin sequenc-
ing and the solar input will disconnect. The controller must be restarted to clear the fault and
begin operation with the new settings.
Battery High Voltage Disconnect (G / R sequencing)
This fault is set when battery voltage is above normal operating limits. The controller will discon-
nect the solar input and set a High Voltage Disconnect fault. This fault is commonly caused by
other charging sources in the system charging the battery above the TS-MPPT-600V-TR regula-
tion voltage. When the battery voltage returns to normal levels, the fault will automatically clear.
Custom Settings Edit (R / Y / G sequencing)
A value has been modified in custom settings memory. The controller will stop charging and
indicate a fault condition. After all settings have been modified, the controller must be reset by
removing and then restoring power to the controller. The new programmed settings will be used
after the power reset.
Firmware Update Failure (start-up interrupted - stops on Y)
The firmware update was not successfully programmed. The controller will not indicate the full
power-up LED sequence of G / Y / R when power to the controller is reset. Instead, the controller
will display green and then stop on yellow. The yellow LED will continue to be lit and the control-
ler will not complete start up or begin charging. Retry the firmware update. The firmware must be
successfully loaded before the controller will start up. Note: the second indication of firmware
update failure is that the other processor is not responding.
Solar Over-Current (Y + R / G)
While rare, if battery charging current exceeds approximately 130% of the controller’s output cur-
rent rating, this fault can occur. The fault is generally related to fast, large battery voltage
transients (connecting a very heavy or capacitive load like an inverter) that are faster than the
controller can regulate and it shuts off to protect the circuitry. The controller will automatically
re-start in 10 seconds.
