GSL MPPT12-2 User manual
MPPT12-2 R6
Page 1 of 8
Model:
MPPT12-2
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
This revolutionary maximum power point tracker solar charger
was designed using the technology that won GSL Electronics the
prestigious “2008 EDN Innovation award”. A simple, compact and
low cost alternative. Ideal for charging batteries with the new low
cost high efciency grid type panels.
MPPT12-2 Unit
MPPT12-2 Specications
Efciency Typical 96%
Input Voltage 16V to 55V
Output Voltage (Float) 13.5V / 27V
Output Voltage (Bulk) Flooded 14.5V / 29V, Sealed 14.2V / 28.4V
Output Power Peak 250W, constant 200W @29V / 150W @ 14.4V
Quiescent Current 0.04A
Thermal Protection Multilevel type
Dimensions (mm) 35 X 75 X 100mm
Indications Dual LED display – battery OK / LOW
PATENT APPLIED FOR - 2010901565
Important:
• Use only PV systems with open circuit voltage below 55v & a minimum VMP of 17V for 12V
and 34V for 24V Charging.
•Use wires suitable for at least 15A, but if wire runs are over 3m then larger wires are
recommended to limit voltage drop and losses.
• Install the unit in a dry place out of direct sunlight and away from ammable liquids or gases.
• Battery fuse ( BF ) is always required and must be located as close to the battery as possible,
its sizing depends on the wire size and load ratings. Typically a 15A 24V fuse would do.
• Before connecting battery always check battery and PV panel polarity.
• When used with panels over 150W @ 12V or 200W @ 24V the MPPT12-2 MUST be tted
with the PVF fuse. Locate this fuse as close as possible to the MPPT. A 10A 60V fuse is
recommended.
For optimal power output the following panel combinations are recomended:-
12V Charging
• 2 x 12V Battery Panels connected in series (Total VOC =42V & VMP =32V)
• 1 x 24V Battery Panel (Total VOC =42V & VMP =32V)
• 1 x 48 Cell Grid Panel (Total VOC =28V & VMP =23V)
• 1 x 54 Cell Grid Panel (Total VOC =32V & VMP =26V)
• 1 x 52 Cell Grid Panel (Total VOC =31V & VMP =25V)
• 1 x 60 Cell Grid Panel (Total VOC =36V & VMP =29V)
• 1 x 72 Cell Grid Panel (Total VOC =44V & VMP =36V)
24V Charging
• 1 x 72 Cell Grid Panel (Total VOC =44V & VMP =36V)
Page 2 of 8
Model:
MPPT12-2 200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
MPPT12-2 R6
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
MPPT12-2 General Information:
• Green LED ashing – battery charging and all normal.
• Red LED ashing – battery voltage low, below 0.9 of nominal voltage.
• This MPPT is designed to auto detect 12V and 24V battery systems and select a suitable
charge regime.
• The absorption phase is entered following a low battery condition and is maintained for
approx. 1.5 hours.
• Custom oat and absorption voltages and times are possible but minimum orders apply.
• This MPPT has a built in multilevel over temperature protection to improve product reliability
while maximising output power availability.
• The MPPT12-2 will efciently charge 12V batteries from 24V panels.
• The panel voltage limits for the MPPT12-2 are: Maximum open circuit voltage below 55V.
• Minimum Maximum Power Point ( at the maximum operating temperature) must be above 17V
for 12V batteries and 34V for 24V batteries to ensure full power.
• If used, this fuse is optional, locate the output fuse (OF) as close to the MPPT as possible
(15A 24VDC rating).
Page 3 of 8
Model:
MPPT12-2
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Basic Wiring With Permanent Load Connection:
Note: First start up may take up to one minute.
For simplicity in the following drawings unconnected wires are not depicted.
Settings And Congurations:
The MPPT12-2 factory default setting is for sealed lead acid batteries (Maximum charge voltage 14.2V
and oat voltage 13.4V) and auxiliary switch (grey wire) congured in Low Voltage Disconnect mode.
The various operating modes can be congured with a combination of the green and yellow wires and
the internal links CHE and REN.
Always ensure that the CHE link is set for the Correct Battery Type:
The yellow and green wires are either left unconnected (Ensure they are insulated from any other point),
or grounded (shorted to the black wire).
To access the CHE ( 2 pin ) and REN ( 3pin ) links carefully remove the rear plastic cover.
CHE: Linked - Vented Batteries, Unlinked - Sealed Batteries
REN: Right Link - 6 Hour DDS, Left Link - All Night DDS, No Link - LVD
Green Wire: Grounded - Enable Remote Load Control & Disable DDS & LVD,
: Floating - Disable RLC & Enable DDS & LVD.
Yellow Wire: Grounded (Green Wire Grounded) - Load Disconnected, Floating - Load Connected.
Note: If the Green wire is oating, the yellow wire has no effect.
Rear View Of Charger
With Cover Removed
No Link - Sealed Battery
Link - Vented Battery
CHE
CHE
MPPT12-2 R6
Page 4 of 8
Model:
MPPT12-2 200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
Wiring With Dawn To Dusk Switch:
The DDS option is intended to power up loads during night-time only.
This feature will not trigger during short periods of low light, it is an approximation only to actual ambient light levels
and if precise ambient light levels are required then light sensors must be used.
The maximum DDS load current is 10A continuous or 20A transients.
The DDS can be set to approx. 6 hours or “All Night” (actual night duration and up to 15 hours max.)
6 Hour DDS Set-Up
Grey
CHE
REN
CHE
REN
6 Hour DDS Set-Up (Sealed Battery)
6 Hour DDS Set-Up (Vented Battery)
All Night DDS Set-Up
Grey
CHE
REN
CHE
REN
All Night DDS Set-Up (Sealed Battery)
All Night DDS Set-Up (Vented Battery)
MPPT12-2 R6
Page 5 of 8
Model:
MPPT12-2
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Wiring With Low Voltage Disconnect :
The LVD option disconnects the load when the battery voltage drops below 10.5V on 12V mode and
21V when operating in 24V mode. This helps to protect the Load from over discharge of your batteries.
This feature will not trigger during short transients.
The LVD maximum load is 10A continuous and 20A for short transients below a few seconds.
Grey
Please ensure that your MPPT has been correctly congured (REN & CHE settings) for
your application. Refer to the Settings and Congurations section for more information.
+
MPPT12-2 R6
Page 6 of 8
Model:
MPPT12-2 200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
Wiring With Critical And Non Critical Loads:
Critical loads are generally light loads which are powered under any condition. Non critical loads are
loads which can be disconnected to ensure maximum on time for critical loads as well as to extend the
life expectancy and reliability of the system. The non critical load can be set up as LVD, DD 6 hours or
DD all night with the same REN conguration detailed earlier.
Grey
+
+
Critical Load
Non Critical
Load
Please ensure that your MPPT has been correctly congured (REN & CHE settings) for
your application. Refer to the Settings and Congurations section for more information.
MPPT12-2 R6
Page 7 of 8
Model:
MPPT12-2
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Wiring The Remote Alarm:
The remote alarm is a normally low 5V digital signal that goes high when the LVD disconnects.
It has a 5mA source/sink capability and can be used to remotely monitor the LVD status.
Wiring With Load Remote Control:
This option enables the remote load connection and disconnection via the load remote control,
yellow wire. When the yellow wire is grounded the load is disconnected otherwise the load is
connected. To congure this mode the green wire must be grounded. This option overrides the LVD
or DDS function but has the same load limitations of 10A continuous or 20A transient.
Grey
LOAD
Green
Yellow
MPPT12-2 R6
Buzzer, LED
PC I/O 5V 5mA
+
-
Blue
Black
Please ensure that your MPPT has been correctly congured (REN & CHE settings) for
your application. Refer to the Settings and Congurations section for more information.
Page 8 of 8
Model:
MPPT12-2 200W Solar Charger
Maximum Power Point Tracker
Operating Instructions
Please read these instructions before use
Unit 2, 110 Station Road, Seven Hills ,NSW, 2147, Australia
Warranty Conditions: The product is warranted to be free from defects in materials and workmanship under normal use and service for a period of 24 months from the
date of sale. This warranty covers defective parts and workmanship provided that the product is shipped prepaid to the seller within 24 months of purchase of goods.
This warranty is limited to the repair or replacement (at the manufacturers’ discretion) of parts and shipping prepaid to the original despatch destination. We regret that no
liability can be accepted for consequential or special damages of any kind howsoever arising in connection with products supplied by the seller. This warranty is in lieu of
all other warranties expressed or implied. No representative is authorised to assume for the seller any other liability in connection with the seller’s products.
MPPT FAQs
Q: What is an MPPT?
MPPT stands for Maximum Power Point Tracker and is a specialised converter designed to maintain the PV voltage at the level in which it
delivers maximum power to the load or battery. The nominal panel output power can only be ensured with the use of an MPPT.
Q: What are the GSL MPPTs advantages compared to standard solar regulators?
1. Suitable for new lower cost high efciency grid type panels since the GSL MPPT can efciently charge the batteries from relatively high
voltage, say 12V batteries from 36V MPP panels.
2. Less interference and more accurate voltages during absorption and oat.
Q: What output can I expect from a 150W or 200W MPPT?
1. The maximum bulk charge current with a 12V battery and 150W panel is approximately 12A, so you can expect about 40AH per day which
is a 40W load for about 10 hours.
2. The maximum bulk charge current with a 24V battery and a 200W panel is about 8A so you can expect about 30AH which is a 40W load
for about 15 hours.
Q: Why are MPPT used mainly in high power systems?
Until now and despite their overwhelming advantages MPPTs have been excluded from low power systems because of cost. The new GSL
MPPT specically designed for low power makes economic sense even in small systems.
Q: What sort of batteries should I use?
1. A deep cycle battery is a must due to the cyclical nature of solar systems with a recommended battery capacity of at least 60AH.
2. A larger battery will not only give longer run time during low light but also will be able to avoid available PV power being unstored such as
when the battery reaches the oat stage.
Q: How does PV temperatures affects charge current?
Temperature increase brings down the PVs maximum power point voltage reducing the MPPTs current gain available. In principle at 25C it is
possible to achieve 30% gain but at 40C (A more realistic average temperature) about 20% is still available.
Q: What happens at low PV currents?
The MPPT will outperform the conventional regulator above 4% of nominal panel power. Below 4%, 6W in a 150W panel, the MPPT will have
a slightly lower output current than a non MPPT.
MPPT12-2 R6
Q: Is interference possible? and If so what do I do?
GSL’s MPPTs produce far less interference than conventional solar regulator during the absorption and oat stages, that
is during most of its operating time, and its designed to comply with local and international EMI standards however some
interference is still possible. If interference occurs rst try and reorient the aerial or move the sensitive equipment away from the
MPPT wires. Ensure the MPPT chassis is grounded. Grounding a battery terminal may also help and nally you can try adding
ferrite clamps.
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