Installation Guide

49TriStar MPPT Operator’s Manual
48
Operation
Firmware Update Failure
The rmware 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 con-
troller will display green and then stop on yellow. The yellow LED will continue to be lit and the
controller will not complete start up or begin charging. Retry the rmware update. The rmware
must be successfully loaded before the controller will start up.
Alarms
High Temperature Current Limit
The TriStar MPPT 150V will limit the solar input current if the heatsink temperature exceeds safe
limits. Solar charge current will be tapered back (to 0 amps if needed) to reduce the heatsink
temperature. The TriStar MPPT 150V is designed to operate at full rated current at the maximum
ambient temperature. This alarm indicates that there is insufcient airow and that the heatsink
temperature is approaching unsafe limits. If the controller frequently reports this alarm condition,
corrective action must be taken to provide better air ow or to relocate the controller to a cooler
spot.
High Input Voltage Current Limit
The TriStar MPPT 150V will limit the solar input current as the solar array Voc approaches the
maximum input voltage rating. The array Voc should never exceed the 150 Volt maximum input
voltage. See the array voltage derating graph in Section 8.0.
Current Limit
The array power exceeds the rating of the controller. This alarm indicates that the
TriStar MPPT 150V is limiting battery current to the maximum current rating.
RTS Open
The Remote Temperature Sensor is not connected to the controller. Use of the RTS is recom-
mended for proper battery charging.
Heatsink Temperature Sensor Open / Shorted
The heatsink temperature sensor is damaged. Return the controller to an authorized Morningstar
dealer for service.
Battery Sense Out of Range / Disconnected
A battery sense wire is disconnected. Inspect the battery sense connections. This alarm is set
when the voltage at the battery sense voltage differs by more than 5 volts from the voltage at the
battery terminals.
Uncalibrated
The controller was not factory calibrated. Return the controller to an authorized Morningstar
dealer for service.
4.6 Inspection and Maintenance
WARNING: RISK OF ELECTRICAL SHOCK.
NO POWER OR ACCESSORY TERMINALS ARE ELECTRICALLY ISOLATED FROM
DC INPUT, AND MAY BE ENERGIZED WITH HAZARDOUS SOLAR VOLTAGE. UNDER CER-
TAIN FAULT CONDITIONS, BATTERY COULD BECOME OVER-CHARGED. TEST BETWEEN
ALL TERMINALS AND GROUND BEFORE TOUCHING.
AVERTISSEMENT: RISQUE DE CHOC ÉLETRIQUE.
NON ALIMENTATION OU AUX BORNES D’ACCESSOIRES SONT ISOLÉS ÉLEC-
TRIQUEMENT DE L’ENTRÉE DE C.C ET DOIT ÊTRE ALIMENTÉS À UNE TENSION DAN-
GEREUSE SOLAIRE. SOUS CERTAINES CONDITIONS DE DÉFAILLANCE, LA BATTERIE
POURRAIT DEVENIR TROP CHARGÉE. TEST ENTRE TOUTES LES BORNES ET LA MASSE
AVANT DE TOUCHER.
WARNING: Shock Hazard
Disconnect all power sources to the controller before removing the wiring box cover.
Never remove the cover when voltage exists on the TriStar MPPT 150V power connections.
AVERTISSEMENT: Risque de décharge électrique
Un moyen de déconnexion de tous les poteaux d'alimentation doit être fourni. Ceux-ci
se déconnecte doit être intégrée dans le câblage xe. Ouvrir que toutes les source d'énergie
se déconnecte avant de retirer le couvercle de la contrôleur, ou accès au câblage.
Table 4-6 below lists the recommended maintenance schedule to keep your TriStar MPPT 150V
performing optimally.