Victron energy BlueSolar MPPT 75/50 User manual

Manual
EN
Handleiding
NL
Manuel
FR
Anleitung
DE
Manual
ES
Användarhandbok
SE
Appendix
BlueSolar charge controller MPPT 75/50

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EN NL FR DE ES SE Appendix
1 General Description
1.1 Charge current up to 50 A and PV voltage up to 75 V
The BlueSolar MPPT 75/50 charge controller is able to charge a
lower nominal-voltage battery from a higher nominal voltage PV
array.
The controller will automatically adjust to a 12 or 24V nominal
battery voltage.
1.2 Ultra-fast Maximum Power Point Tracking (MPPT)
Especially in case of a clouded sky, when light intensity is
changing continuously, an ultra fast MPPT controller will
improve energy harvest by up to 30% compared to PWM charge
controllers and by up to 10% compared to slower MPPT
controllers.
1.3 Advanced Maximum Power Point Detection in case of
partial shading conditions
If partial shading occurs, two or more maximum power points
may be present on the power-voltage curve.
Conventional MPPT’s tend to lock to a local MPP, which may
not be the optimum MPP.
The innovative BlueSolar algorithm will always maximize energy
harvest by locking to the optimum MPP.
1.4 Outstanding conversion efficiency
No cooling fan. Maximum efficiency exceeds 98%. Full output
current up to 40°C (104°F).
1.5 Flexible charge algorithm
Eight preprogrammed algorithms, selectable with a rotary
switch.
1.6 Extensive electronic protection
Over-temperature protection and power derating when
temperature is high.
PV short circuit and PV reverse polarity protection.
PV reverse current protection.
1.7 Internal temperature sensor
Compensates absorption and float charge voltages for
temperature.

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1.8 Automatic battery voltage recognition
The MPPT 75/50 will automatically adjust itself to a 12V or a 24V
system.
1.9 Adaptive three step charging
The BlueSolar MPPT Charge Controller is configured for a three
step charging process: Bulk – Absorption - Float.
1.9.1. Bulk stage
During this stage the controller delivers as much charge current
as possible to rapidly recharge the batteries.
1.9.2. Absorption stage
When the battery voltage reaches the absorption voltage setting,
the controller switches to constant voltage mode.
When only shallow discharges occur the absorption time is kept
short in order to prevent overcharging of the battery. After a deep
discharge the absorption time is automatically increased to make
sure that the battery is completely recharged. Additionally, the
absorption period is also ended when the charge current
decreases to less than 2 A.
1.9.3. Float stage
During this stage, float voltage is applied to the battery to
maintain it in a fully charged state.

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EN NL FR DE ES SE Appendix
2 Safety instructions
●please read this manual carefully before the product is
installed and put into use.
●This product is designed and tested in accordance with
international standards. The equipment should be used for the
designated application only.
●Install the product in a heatproof environment. Ensure
therefore that there are no chemicals, plastic parts, curtains or
other textiles, etc. in the immediate vicinity of the equipment.
●Ensure that the equipment is used under the correct operating
conditions. Never operate it in a wet environment.
●Never use the product at sites where gas or dust explosions
could occur.
●Ensure that there is always sufficient free space around the
product for ventilation.
●Refer to the specifications provided by the manufacturer of the
battery to ensure that the battery is suitable for use with this
product. The battery manufacturer's safety instructions should
always be observed.
● Protect the solar modules from incident light during
installation, e.g. cover them.
● Never touch uninsulated cable ends.
● Use only insulated tools.
● Connections must always be made in the sequence described
in section 3.5.
Danger of explosion from sparking
Danger of electric shock

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3. Installation
3.1. General
● Mount vertically on a non-flammable substrate, with the power
terminals facing downwards.
●Mount close to the battery, but never directly above the battery
(in order to prevent damage due to gassing of the battery).
●Use cables with at least 10 mm² or AWG6 cross section. The
recommended maximum length of the cable is 5 m, in order to
restrict cable loss.
(if the cables to the PV panels must be longer than 5 m, increase
cross section or use parallel cables and install a junction box next
to the controller and connect with a short 10 mm² or AWG6 cable
to the controller).
●Grounding: the heatsink of the controller should be connected
to the grounding point.
3.2. PV configuration
● The controller will operate only if the PV voltage exceeds
battery voltage (Vbat).
● PV voltage must exceed Vbat + 5V for the controller to start.
Thereafter minimum PV voltage is Vbat + 1V.
● Maximum open circuit PV voltage: 75V.
The controller can be used with any PV configuration that
satisfies the three above mentioned conditions.
For example:
12V battery and mono- or polycristalline panels
● Minimum number of cells in series: 36 (12V panel).
● Recommended number of cells for highest controller efficiency:
72
(2x 12V panel in series or 1x 24V panel).
● Maximum: 108 cells (3x 12V panel in series).

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EN NL FR DE ES SE Appendix
24V battery and mono- or polycristalline panels
● Minimum number of cells in series: 72
(2x 12V panel in series or 1x 24V panel).
● Maximum: 108 cells (3x 12V panel in series).
Note: Note: at low temperatures the open circuit voltage of a
108 cell solar array may exceed 75V, depending on local
conditions and cell specifications. In that case the number of
cells in series must be reduced.

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3.3. Configuration of the controller
Eight preprogrammed charge algorithms, selectable with a rotary
switch:
Pos Suggested battery type Absorption
V
Float
V
dV/dT
mV/°C
0 Gel Victron long life (OPzV)
Gel exide A600 (OPzV)
Gel MK
28,2 27,6 -32
1 Gel Victron deep discharge
Gel Exide A200
AGM Victron deep discharge
Stationary tubular plate
(OPzS)
Rolls Marine (flooded)
Rolls Solar (flooded)
28,6 27,6 -32
2 Default setting
Gel Victron deep discharge
Gel Exide A200
AGM Victron deep discharge
Stationary tubular plate
(OPzS)
Rolls Marine (flooded)
Rolls Solar (flooded)
28,8 27,6 -32
3 AGM spiral cell
Stationary tubular plate
(OPzS)
Rolls AGM
29,4 27,6 -32
4 PzS tubular plate traction
batteries or
OPzS batteries
29,8 27,6 -32
5 PzS tubular plate traction
batteries or
OPzS batteries
30,2 27,6 -32
6 PzS tubular plate traction
batteries or
OPzS batteries
30,6 27,6 -32
7 Lithium Iron Phosphate
(LiFePo
4
) batteries 28,4 27,0 0
Note: divide all values by two in case of a 12V system.

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EN NL FR DE ES SE Appendix
3.4 LED’s
Blue LED “bulk”: will be on when the battery has been
connected
Switches off when the absorption voltage has been reached.
Blue LED “absorption”: will be on when the absorption voltage
has been reached.
Switches off at the end of the absorption period.
Blue LED “float”: will be on after the solar charger has
switched to float.
3.5 Cable connection sequence (see figure 1)
First: connect the battery (this will allow the controller to
recognize system voltage).
Second: connect the solar array (when connected with reverse
polarity, the controller will heat up but will not charge the the
battery).
The system is now ready for use.

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3.6 Battery charging information
The charge controller starts a new charge cycle every moring,
when the sun starts shining.
The maximum duration of the absorption period is determined by
the battery voltage measured just before the solar charger starts
up in the morning:
Battery voltage Vb (@start-up) Maximum absorption time
Vb < 23,8V 4 h
23,8V < Vb < 24,4V 2 h
24,4V < Vb < 25,2V 1 h
Vb > 25,2V 0 h
(divide voltages by 2 for a 12 V system)
If the absorption period is interrupted due to a cloud or due to a
power hungry load, the absorption process will resume when
absorption voltage is reached again later on the day, until the
absorption period has been completed.
The absorption period also ends when the output current of the
solar charger drops to less than 2 Amps, not because of low solar
array output but because the battery is fully charged (tail current
cut off).
This algorithm prevents over charge of the battery due to daily
absorption charging when the system operates without load or
with a small load.
3.7 Connectivity
Several parameters can be customized (VE.Direct to USB cable,
ASS030530000, and a computer needed). See the data
communication white paper on our website.
The required software can be downloaded from
http://www.victronenergy.nl/support-and-downloads/software/
The charge controller can be connected the to a Color Control
panel, BPP000300100R, with a VE.Direct to VE.Direct cable.