ASHAPOWER SURYA-40 HV Manual del usuario - Página 7
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TROUBLE SHOOTING
ERROR
DESCRIPTION
CODE
PV PANEL VOLTAGE
EV
ERROR
BATTERY BANK VOLTAGE
EB
ERROR
ET
HIGH TEMPERATURE
HARDWARE
FAILURE
EM
HARDWARE ERROR
IMPORTANT NOTE FOR ACTIVATION OF LIMITED
AMPERE BATTERY CHARGING AND EQUALIZATION CHARGING
1. What is initial limited ampere charging in MPPT charge controller ?
Maximum recommended charging current for a solar C10 inverter battery is up to 20% of the battery AH.
Batteries used in solar power system is often discharged below 11.5V every day. So it is recommended to start
initial charging with limited ampere instead of charging with maximum capacity of MPPT charge controller.
Recommended maximum charging current for a 12V,150AH lead acid battery is 30 Amp. If such a battery
Eg:
is connected to the MPPT delivering above 30 amps the excess ampere entering the battery can be controlled
in the initial charging stage by activating initial limited ampere charging feature. MPPT delivers only 20% of
the battery Ah. ie.30amps to the battery
1. Ampere Limiting based on load shifting voltage:
(grid to solar shifting volt) In this mode battery charging ampere is limited in the initial stage .(if battery is
150Ah charging current will be limited to 30 amps.) When load is shifted to solar, entire ampere is shared
between load and battery.
2. Ampere limiting based on Charging mode :
In this mode also, battery charging ampere is limited in the initial stage and the limitation is stopped after the
completion of bulk charging stage. (when float charging starts)
ie.The entire charging current is never delivered to battery in float charging mode as the battery is already
charged to float charging level.
MPPT charge controllers are sun light dependent devices and they can't deliver high ampere in the morning.
They start to charge the batteries in low ampere early in the morning. As the terminal volt of the battery
increases, charge controller shifts the connected inverter load to solar power and the current is shared to load
and battery charging.Hence the activation of limited ampere charging is not necessary in low ampere charge
controllers connected with high Ah batteries.
eg: If the charge controller delivers more than 30amp current in starting stage and the connected battery is
below 150Ah it is recommended to activate limited ampere charging option.
2. What is Equalization charging in MPPT charge controller?
When a lead acid battery is left in a discharged state for extended periods of time, non-removable sulphate
crystals are formed on the surface of battery plates that reduce the charging and discharging capacity of the
battery. Equalization charging is an over charging process of lead-acid batteries above their recommended
charging voltage, to remove sulfation and bring all cells of the battery to similar levels by increasing the
voltage to 2.50V/cell, or 10 percent higher than the recommended charging voltage. Equalization charging
also equalize acid stratification, a condition where acid concentration is greater at the bottom of stationary
batteries than at the top level. Battery experts recommend periodic equalization charging to keep the
batteries healthy (once in every three month)
PV PANEL VOLTAGE IS NOT IN THE SPECIFIED LIMIT. CHECK FOR PV PANEL GROUPING.
REFER PV PANEL GROUPING MANUAL PROVIDED.
CONNECTED BATTERY BANK VOLTAGE IS NOT IN THE SPECIFIED LIMIT. CHECK FOR
DEFECTIVE BATTERIES LOOSE CONNECTION OF JUMPER WIRES AND NUMBER OF
BATTERIES.
CONNECTED PV PANEL CAPACITY (WATTS) IS NOT IN THE SPECIFIED LIMIT OR CHECK
FOR THE FUNCTION OF THE COOLING FAN.
LIGHTNING MAY CAUSE HARDWARE FAILURE. IF CONTINUOUS BEEP SOUND AND
ERROR MESSAGE EM IS SEEN, CHECK FOR LOOSE CONTACT OF BATTERY
CONNECTORS OR FAULTY BATTERIES.DISCONNECT AND RECONNECT THE BATTERY
WIRES FROM THE DEVICE. IF THE PROBLEM PERSISTS CONTACT THE INSTALLER FOR
SERVICE ASSISTANCE.
EARTH LEAKAGE FROM THE WALL MAY CAUSE HARD WARE ERROR MESSAGE .
UN-MOUNT THE DEVICE AND ISOLATE IT FROM THE WALL MOUNTING ON A PVC OR
WOODEN BOARD
7
SOLUTION