
67
TriStar MPPT-600V-TR Operator's Manual
66
Testing and Troubleshooting
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
CERTAIN FAULT CONDITIONS, BATTERY COULD BECOME OVER-CHARGED. TEST
BETWEEN ALL TERMINALS AND GROUND BEFORE TOUCHING.
A
VERTISSEMENT: 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
A means of disconnecting all power supply poles must be provided. These discon-
nects must be incorporated in the fixed wiring. Open all power source disconnects before
removing controller wiring cover, or accessing wiring.
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 fixe. Ouvrir que toutes les source
d'énergie se déconnecte avant de retirer le couvercle de la contrôleur, ou accès au câblage.
Battery Charging and Performance Issues
Problem:
No LED indications, controller does not appear to be powered
Solution:
With a multi-meter, check the voltage at the battery terminals on the TS-MPPT-600V-TR.
Battery voltage must be 16* vdc or greater. If the voltage on the battery terminals of the control-
ler is between 16 and 72 vdc, and no LEDs are lit, contact your authorized Morningstar dealer for
service. If no voltage is measured, check wiring connections, fuses, and breakers.
* Unit will power on with 10V, but 16V is required for charging to occur.
Problem:
The TS-MPPT-600V-TR is not charging the battery.
Solution:
Check the three (3) battery SOC LEDs. If they are flashing a sequence, see
Section 4.4 Faults &
Alarms
of this manual to determine the cause. If a TriStar Meter 2-600V is connected, the
diagnostics menu will display reported faults and alarms.
Testing and Troubleshooting
6.0
If the LED indications are normal, check the fuses, breakers, and wiring connections in the solar
array wiring. With a multi-meter, check the array voltage directly at the TS-MPPT-600V-TR solar
input terminals. Input voltage must be greater than battery voltage before charging will begin.
Problem:
Controller makes buzzing and humming noises.
Solution:
No action is required. This is expected due to magnetic resonance and circuit switching.
Network and Communication Issues
Problem:
Cannot connect to the controller via RS-232
Solution:
Check the following:
• The RS-232 cable is straight-through, not a Null Modem (cross-over)
• If using a serial-USB adapter, verify that the adapter software is installed and a serial COM
port has been mapped. Check the activity light on the USB adapter if it has one. If there is
no activity, the wrong COM port has been chosen or there is a configuration issue with the
adapter.
• The default MODBUS ID of the TS-MPPT-600V-TR is 1. Verify that the PC software is
configured to communicate using the correct ID.
Problem:
Cannot connect to the controller via EIA-485
Solution:
Check the following:
• The RS-232 port is not in use. The EIA-485 and RS-232 ports cannot be used
simultaneously. Only one port can be used at a time.
• The RSC-1 adapter used to connect the PC to the EIA-485 network shows a green LED
and pulses red when a connection is attempted. See the RSC-1 documentation for more
information.
• Each controller or device on the EIA-485 network has been programmed with a unique
MODBUS ID.
• A serial cross-over (null modem) cable is used for the connection between the PC and the
Morningstar RSC-1 485 Adapter. A straight-through serial cable will not work.
• Power is supplied to the 4-wire bus on the Power/Ground lines. The bus requires voltage
in the range: 8 - 16 Vdc.
• All bus connections are secure and each terminal is wired in parallel: line A to line A, line B
to line B, etc.