Victron energy BlueSolar MPPT 150/70 User manual

Manual
EN
Appendix
BlueSolar charge controller MPPT 150/70

Copyrights 2007 Victron Energy B.V.
All Rights Reserved
This publication or parts thereof may not be reproduced in any form, by any method, for any purpose.
For conditions of use and permission to use this manual for publication in other than the English
language, contact Victron Energy B.V.
VICTRON ENERGY B.V. MAKES NO WARRANTY, EITHER EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE, REGARDING THESE VICTRON ENERGY PRODUCTS
AND MAKES SUCH VICTRON ENERGY PRODUCTS AVAILABLE SOLELY ON AN “AS IS” BASIS.
IN NO EVENT SHALL VICTRON ENERGY B.V. BE LIABLE TO ANYONE FOR SPECIAL,
COLLATERAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH OR
ARISING OUT OF PURCHASE OR USE OF THESE VICTRON ENERGY PRODUCTS. THE SOLE
AND EXCLUSIVE LIABILITY TO VICTRON ENERGY B.V., REGARDLESS OF THE FORM OF
ACTION, SHALL NOT EXCEED THE PURCHASE PRICE OF THE VICTRON ENERGY PRODUCTS
DESCRIBED HERE IN.
Victron Energy B.V. reserves the right to revise and improve its products as it sees fit. This publication
describes the state of this product at the time of its publication and may not reflect the product at all
times in the future

1
EN Appendix
1. PRODUCT INTRODUCTION
Charge current up to 70 A and PV voltage up to 150 V
The BlueSolar 150/70-MPPT charge controller is able to charge a lower nominal-voltage battery from a higher
nominal voltage P array.
The controller will automatically adjust to a 12, 24, or 48 nominal battery voltage.
Ultra fast Maximum Power Point racking (MPP )
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.
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.
Outstanding conversion efficiency
No cooling fan. Maximum efficiency exceeds 98%. Full output current up to 40°C (104°F).
Flexible charge algorithm
Several preprogrammed algorithms. One programmable algorithm.
Manual or automatic equalisation.
Battery temperature sensor. Battery voltage sense option.
Programmable auxiliary relay
For alarm or generator start purposes
Extensive electronic protection
Over-temperature protection and power derating when temperature is high.
P short circuit and P reverse polarity protection.
Reverse current protection.
2. SAFETY INSTRUCTIONS
●It is advised to 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
or dusty 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 insulated tools only.
Danger of explosion from sparking
Danger of electric shock

2
●At a voltage >75 V, particularly with regard to the open circuit voltage of the PV array, the solar
system must be installed according to protection class II. A chassis grounding point is located on the
outside of the product. If it can be assumed that the grounding protection is damaged, the product
should be taken out of operation and prevented from accidentally being put into operation again;
contact qualified maintenance personnel.
●Ensure that the connection cables are provided with fuses or circuit breakers. Never replace a
protective device by a component of a different type. Refer to the manual for the correct part.
●Connections must always be made in the sequence described in section 4
3. INSTALLATION
This product may only be installed by a qualified electrical engineer.
3.1 Location
The product must be installed in a dry and well-ventilated area, as close as possible to - but not above
- the batteries. There should be a clear space of at least 10 cm around the product for cooling.
The charge controller is intended for wall mounting. For mounting purposes, a hook and two holes are
provided at the back of the casing (see appendix G).
3.2 Battery cables and battery fuse
Do not invert the plus and minus battery connection: this will permanently damage the
charger.
In order to utilize the full capacity of the product, battery cables with sufficient cross section and a fuse
of sufficient current rating should be used.
Some basic formulas for copper cable:
Resistance R c (mΩ@47°C) of a cable with length L (m) and cross section A (mm²): R c = 20*L/A (1)
Or, with R c in Ω(Ohm): R c =0,02*L/A (2)
Power loss P c (W) in a cable carrying current I (A): P c = I²*R c = 0,02*l²*L/A (3)
Power loss P c relative to solar array output P v in %: α= (P c /P v )*100 (4)
Cable cross section required to limit relative power loss to α(%): A = 2*2L*I/(α*V) (5)
(with total cable length 2L) or:
A = 2*2L*P v /(α*V²) (6)

3
EN Appendix
Table 1 below gives some examples of battery cable cross sections calculated with formula (5).
(in this case I and V in formula (5) are the output current and output voltage of the charge controller)
12V system (solar array up to 1000W)
Maximum
solar array
output
Maximum
Charge current
@13,4V
Battery
Fuse
Rating
Power loss in
battery cables
α (%)
Length 2x1,5 m Length 2x2,5 m Length 2x5 m
mm
2
AWG mm
2
AWG mm
2
AWG
500W 37A 63A 1 25 3 35 2 Not recommended
750W 55A 80A 1,5 25 3 35 2 Not recommended
1000W 70A 1) 100A 2 25 3 35 2 Not recommended
24V system (solar array up to 2000W)
Maximum
solar array
output
Maximum
Charge current
@26,8V
Battery
Fuse
Rating
Power loss in
battery cables
α %
Length 2x1,5 m Length 2x2,5 m Length 2x5 m
mm
2
AWG mm
2
AWG mm
2
AWG
500W 18A 35A 1 6 10 10 7 16 5
1000W 37A 63A 1,5 6 10 10 7 25 3
2000W 70A 1) 100A 2 10 7 16 5 35 2
36V system (solar array up to 3
000W)
Maximum
solar array
output
Maximum
Charge current
@40,2V
Battery
Fuse
Rating
Power loss in
battery cables
α %
Length 2x2,5 m Length 2x5 m Length 2x10 m
mm
2
AWG mm
2
AWG mm
2
AWG
750W 21 35 0,5 6 10 10 7 16 5
1500W 42 63 0,5 16 5 25 3 35 2
3000W 70A 1) 100 1 16 5 25 3 35 2
48V system (solar array up to 4
000W)
Maximum
solar array
output
Maximum
Charge current
@53,6V
Battery
Fuse
rating
Power loss in
battery cables
α %
Length 2x2,5 m Length 2x5 m Length 2x10 m
mm
2
AWG mm
2
AWG mm
2
AWG
1000W 21 35 0,5 6 10 10 7 16 5
2000W 42 63 0,5 10 7 16 5 35 2
4000W 70A 1) 100 1 10 7 16 5 35 2
1) Taking into account 6% loss (battery cables + controller + PV cables + fuses)
Table 1: Battery cable cross section and power loss
3.3 PV connection
The PV input current of the charge controller is limited to 50A. In case of a potential solar array output
exceeding 50A, the solar array voltage will increase up to the level at which the output is reduced to
50A.
The voltage on the PV input should never exceed 150V under any condition.
The charger will be permanently damaged if the input voltage is too high.
The required PV cable cross section depends on array power and voltage. The table below assumes
that maximum PV power has been installed. Cable cross section can be reduced in case of smaller
solar arrays.
The best efficiency is reached at a PV input voltage that is twice the battery voltage.
DC circuit breakers or fuses must be installed in the positive and negative PV cables, to enable
isolation of the charger during installation or maintenance.
The table below gives some examples of cable cross sections calculated with formula (5).
(in this case I and V are the output current and output voltage of the solar array)

4
12V system (solar array up to 1000W)
Solar array
MPP-voltage
[V]
Solar array
MPP-current
[A]
Power loss
in PV cables
α (%)
Length 2x5 meter Length 2x10 meter Length 2x20 meter
mm
2
AWG mm
2
AWG mm
2
AWG
18 Max 50A Not recommended Not recommended Not recommended
36 27 1 16 5 35 2 Not recommended
54 18 1 10 7 16 5 25 3
72 13 0,75 6 10 10 7 25 3
90 11 0,5 6 10 10 7 16 5
108 9 0,5 4 11 6 10 16 5
24V system
(solar array
up to
2000W)
Solar array
MPP-voltage
[V]
Solar array
MPP-current
[A]
Power loss
in PV cables
α %
Length 2x5 meter Length 2x10 meter Length 2x20 meter
mm
2
AWG mm
2
AWG mm
2
AWG
36 Max 50A 1 35 2 Not recommended Not recommended
54 37 1 16 5 25 3 Not recommended
72 28 0,75 10 7 25 3 35 2
90 22 0,5 10 7 25 3 35 2
108 19 0,5 6 10 16 5 25 3
36V system
(solar array
up to
3000W)
Solar array
MPP-voltage
[V]
Solar array
MPP-current
[A]
Power loss
in PV cables
α %
Length 2x5 meter Length 2x10 meter Length 2x20 meter
mm
2
AWG mm
2
AWG mm
2
AWG
54 Max 50A 1 25 3 35 2 Not recommended
72 42 0,75 16 5 25 3 Not recommended
90 33 0,5 16 5 25 3 35 2
108 28 0,5 10 7 25 3 35 2
48V system
(solar array
up to
4000W)
Solar array
MPP-voltage
[V]
Solar array
MPP-current
[A]
Power loss
in PV cables
α %
Length 2x5 meter Length 2x10 meter Length 2x20 meter
mm
2
AWG mm
2
AWG mm
2
AWG
72 Max 50A 1 16 5 35 2 Not recommended
90 44 1 10 7 25 3 35 2
108 37 0,75 10 7 16 5 35 2
Table 2: PV cable cross section and power loss
3.4 Optional connections
3.4.1 Voltage Sense
For compensating possible cable losses during charging, two sense wires can be connected to
measure voltage directly on the battery. Use wire with a cross-section of 0,75mm² and insert a 0,1
Amp fuse close to the battery.
During battery charging, the charger will compensate the voltage drop over the DC cables up to a
maximum of 1 Volt (i.e. 1V over the positive connection and 1V over the negative connection). If the
voltage drop threatens to become larger than 1V, the charging current is limited in such a way that the
voltage drop remains limited to 1V.
The warning triangle on the LCD will blink if the voltage drop reaches 1 Volt
3.4.2 Temperature Sensor (see figure 1)
The temperature sensor supplied with the product may be used for temperature-compensated
charging. The sensor is isolated and must be mounted on the battery minus pole.
3.4.3 CAN bus interface
The charger is equipped with two CAN bus RJ45 sockets.

5
EN Appendix
The CAN bus on this charger is not galvanically isolated. The CAN bus is referenced to the
minus battery connection.
The CAN bus interface will be referenced to ground if the minus pole of the battery is grounded.
In case of a positive grounded system, a CAN isolation module will be needed to reference the CAN
bus interface to ground.
To prevent ground-loops, the charge controller has an internal 33 Ohm resistor between CAN-GND
and the battery minus output of the charge controller.
3.4.4 Programmable relay
The charge controller is equipped with a potential-free Single Pole Double Throw relay that by default
is programmed according to option 3 below.
The relay can be programmed to energize on one of the following events:
•option 1: when the maximum voltage on the PV input is exceeded
•option 2: when the temperature protection becomes active
•option 3: when the battery voltage becomes too low (adjustable low voltage limit)
•option 4: when the charger is in equalisation mode
•option 5: when the charger is in error mode
•option 6: when the charger temperature drops below -20°C (-40°F)
•option 7: when the charger is in over-voltage mode (adjustable over voltage limit)
3.4.5 Parallel charging
Several charge controllers can be connected to the same battery.
The PV inputs should not be connected in parallel. Each charge controller should be
connected to its own PV array.

6
4. POWERING UP
4.1 Connecting the battery
Close the connection to the battery, but DO NOT connect the solar array.
All the icons of the display will now light up:
This is followed by the software version:
In this case the Software-version is 1.1.6
After the software-version has been displayed, the
charger will start the system voltage recognition
phase.
The LCD-screen displays two values:
Left: system (= nominal battery) voltage (12/24/36 or
48V), blinking during the battery recognition phase.
Right: actual measured battery voltage.
In some instances the charge controller might not reflect the correct system voltage (e. g. if the battery
is deeply discharged and the actual battery voltage is far below the nominal voltage). In that case the
system voltage can be adjusted manually, see section 4.2.
If the nominal battery voltage shown is correct, press the SETUP button to accept.
Alternatively, the battery voltage shown becomes final automatically after connecting the PV array,
when PV current starts flowing.
4.2 Adjusting system voltage (adjust only if the system voltage as displayed is wrong)
a. Press SETUP during 3 seconds: the “Menu” icon will light up.
b. Press the "-" or "+" button several times until
the screen shows “AUto”, or a system voltage.
c. Press SELECT: “AUto” or the system voltage will blink.
d. Use the "-" or "+" button to decrease or increase system voltage.
e. Press SETUP to confirm the change, the value will stop blinking,
and the change is made final.
f. Press SETUP during 3 seconds: the display is back in normal. mode and the “Menu” icon will
disappear.
Note: a 36V system will not be detected automatically and must be set with help of the above
mentioned procedure.
Blinking:
Nominal battery voltage
(12/24/36 or 48V)
Actual battery voltage

7
EN Appendix
4.3 Charge algorithm
4.3.1. Overview
Several preset charge curves and one user adjustable curve are available, see table below.
The DEFAULT-setting is algorithm nr 2.
Make sure the charge algorithm is correct for the battery-type that must be charged. If
necessary, contact the battery supplier for the appropriate battery-settings. Wrong battery
settings can cause serious damage to the batteries.
Algorithm
number Description
Absorption
and max.
abs. time
Float Equalisation
Default: off
Temperature
compensation
dV/dT
V / h V maxV@% of Inom mV/°C
1 Gel Victron long life (OPzV)
Gel exide A600 (OPzV)
Gel MK
56,4V / 8h 55,2V 63,6V@8% max 1h
-65 mV/°C
(-2,7 mV/°C per
cell)
2
Default setting
Gel Victron deep discharge, Gel Exide
A200
AGM Victron deep discharge
Stationary tubular plate (OPzS)
Rolls Marine (flooded), Rolls Solar
(flooded)
57,6V / 8h 55,2V 64,8V@8% max 1h -65 mV/°C
3 AGM spiral cell
Rolls AGM 58,8V / 8h 55,2V 66,0V@8% max 1h -65 mV/°C
4 PzS tubular plate traction batteries or
OPzS batteries in cyclic mode 1 56,4V / 4h 55,2V 63,6V@25% max 4h -65 mV/°C
5 PzS tubular plate traction batteries or
OPzS batteries in cyclic mode 2 57,6V / 4h 55,2V 64,8V@25% max 4h -65 mV/°C
6 PzS tubular plate traction batteries or
OPzS batteries in cyclic mode 3 60,0V / 4h 55,2V 67,2V@25% max 4h -65 mV/°C
7 Lithium Iron Phosphate (
LiFePo
4
)
batteries 56,8 / 2h n. a. n. a. 0
8 (USr) Adjustable: maximum charge current
and absorption and float voltages can
be set with potentiometers
Adjustable
(default 57,6V)
Adjustable
(default
55,2V)
Adjustable
(default Vabs. + 7,2V)
@25% max 4hrs
-65 mV/°C
Table 3: Charge algorithm options. All voltages shown are for a 48V system.
4.3.2. Procedure for choosing a preset charge algorithm
a. Press SETUP during 3 seconds: the “Menu” icon will light up.
b. Press the "-" or "+" button several times until the screen shows
the algorithm number (a number with superscript “type”).
c. Press SELECT: the number will now blink.
d. Use the "-" or "+" button to choose the desire algorithm.
e. Press SETUP to confirm the change, the value will stop blinking,
and the change is made final.
f. To return to normal mode, press SETUP during 3 seconds.
4.3.3. User adjustable charge algorithm
a. Proceed as described in the previous section, and select algorithm
number 8 (USr)
b. Press the "-" or "+" button to select the parameter that must be
changed (absorption voltage, float voltage or equalize voltage).
c. Press SELECT: the voltage will now blink.
d. Use the "-" or "+" button to chose the desired voltage.
e. Press SETUP to confirm the change, the value will stop blinking, and the change is made final.
With the "-" or "+" button it is now possible to scroll to another parameter that needs change.
f. To return to normal mode, press SETUP during 3 seconds.

8
4.3.4. Other charge algorithm related settings
Absorption time: default 8 hours
Temperature compensation: default -2,7 mV/°C per cell (-65 mV/°C for a 48V lead-acid battery)
Equalisation:
Some manufacturers of VRLA (Valve Regulated Lead-Acid: i.e. Gel or AGM) batteries recommend a
short equalization period, most do not. Most manufacturers of flooded batteries recommend periodic
equalization.
Please see table 5 for more adjustable parameters.
Note about service life of lead-acid batteries
- Flat plate VRLA batteries (i. e. all 6V and 12V VRLA batteries) as well as flat plate flooded
batteries for automotive application deteriorate quickly when discharged by more than 50%,
especially when left in discharged state for hours or days. We therefore recommend not to
discharge by more than 50% and recharge immediately after a deep discharge.
- All lead acid batteries will deteriorate if not fully charged from time to time.
4.4 Connecting the solar array
After the correct charge algorithm has been selected, the controller is ready for use.
Other settings may be changed/entered before or after connecting the solar array.
Close the connection to the solar array.
If there is sufficient sunlight, the charger will automatically start charging the battery.
If, despite sufficient sunlight, the PV voltage reads 000V, please check the polarity of the PV
cable connection.
5. MORE INFORMATION ABOUT THE LCD SCREENS
5.1 Scrolling through the LCD screens
The following information will be displayed if the "-" button is pressed (in order of appearance):
Displayed info
Visible icons
Visible units
PV power Solar panels W
PV voltage Solar panels V
PV current Solar panels A
Charger temperature Thermometer
0
C (or
0
F)
Battery temperature Battery + thermometer
0
C (or
0
F)
Battery kWh-meter Battery kWh
Battery power Battery W
Battery voltage
(+system voltage)
Battery V
Battery charge current
(+system voltage)
Battery A (default)
Table 4: scrolling through the LCD screens
Pressing the "-" button or the "+"button for 4 seconds activates the auto-scroll-mode.
Now all LCD-screens will pop-up one by one with short intervals.
The auto-scroll-mode can be stopped by pressing the "-" or the "+" button shortly.
Backlight: The LCD backlight will slowly fade one minute after pressing one off the buttons.

9
EN Appendix
5.2 SETUP MENU parameter details
a. To enter the SETUP Menu, press and hold the SETUP-button during 3 seconds.
The “Menu” icon will light up.
b. Press the "-" or "+" button to scroll.
Table 3 below lists in order off appearance all parameters which can be adjusted when pressing
the "-" button
c. Press SELECT: the parameter to change will now blink.
d. Use the "-" or "+" button to chose the desired value.
e. Press SETUP to confirm the change, the value will stop blinking, and the change is made final.
With the "-" or "+" button it is now possible to scroll to another parameter that needs change.
f. To return to normal mode, press SETUP during 2 seconds.
Function or
parameter
Visible icons
Text
or
value
visible on
alphanumerical
display
units
R
ange
and
default (bold)
S
tep
size
On-off switch Menu + Charging ON or OFF
ON - OFF
System reset to
default settings
Menu rESEt
(1)
Temperature
0
C or
0
F
menu + thermometer
0
C or
0
F
0
C /
0
F
0
C/
0
F
Absorption time Menu + Battery + Abs Value h 1 - 24
Default:see table 3
1 h
Bulktime
protection
Menu + Battery +
Bulk
OFF or value h OFF – 10h
Battery
temperature
compensation
Menu + Battery +
thermometer
Value mV/
0
C
per cell
-3,5 - 2,7 - 0 - 3,5 0,1mV (2)
Low battery
voltage alarm
Menu + Battery Lb+value V 32,0 - 40,0 - 69,6 0,1V
High battery
voltage alarm
Menu + Battery Hb + value V 32,0 - 60,0 - 69,6 0,1V
Manual
Equalisation
Menu + Battery +
Equalise
StArt
(blinking)
StArt
(blinking or solid)
Automatic
Equalisation
Menu + Battery +
Equalise
OFF or AUto OFF - AUto (3)
Equalisation
voltage
Menu + Battery +
Equalise
Value V 32,0 - 64,8 - 69,6 0,1V (2)
Float voltage Menu + Battery +
Float
Value V 32,0 - 55,2 - 69,6 0,1V (2)
Absorbtion
voltage
Menu + Battery+ Abs Value V 32,0 - 57,6 - 69,6 0,1V (2)
Charge
algorithm
Menu + Battery Number or USr type 1,2,3,4,5, 6, 7,
USr
System voltage Menu + Battery Value or AUto V 12, 24, 36, 48,
AUto
Relay function Menu rEL. + number
1, 2, 3, 4 5, 6, 7
OFF
KWh-meter
reset
Menu + Battery Value kWh 0 – 999.999 (4)
Maximum
charge current
(bulk-current)
Menu + Battery +
Bulk
Value A 1,0 – 70,0 1,0
Table 5: Setup menu parameter details

10
1) Press SELECT for 4 seconds to reset to original factory settings. After 4 seconds the charger will
re-boot.
2).These values can ONLY be changed for the battery number 8 (USr) (User-defined battery).
The values in the table are for a 48V-battery.
3) When Automatic equalisation is “ON”, the absorption charge will be followed by a voltage limited
constant current period (see table 3). The text “equalize” will be on.
The current is limited to 8% of the bulk current for all VRLA (Gel or AGM) batteries and some flooded
batteries, and to 25% of the bulk current for all tubular plate batteries. The bulk current is the rated
charger current (70A) unless a lower maximum current setting has been chosen.
If, as recommended by most battery manufacturers, the bulk charge current is does not exceed 20A
per 100Ah battery capacity (i.e. 350Ah for a 70A charger), the 8% limit translates to max 1,6A per
100Ah battery capacity, and the 25% limit translates to max 5A per 100Ah capacity.
In case of all VRLA batteries and some flooded batteries (algorithm number 1, 2 or 3) automatic
equalization ends when the voltage limit maxV has been reached, or after t = (absorption time)/8,
whichever comes first.
For all tubular plate batteries automatic equalization ends after t = (absorption time)/2.
4) Press both the "+" and "-" buttons simultaneously during 3 seconds. to reset to zero. Confirm by
pressing SETUP.
Warning
Some battery manufacturers do recommend a constant current equalization period, and others
do not. Do not use constant current equalization unless recommend by the battery supplier.
6. MANUAL EQUALISATION
The charger can be put in equalise mode only during absorption and float periods. When the charger
is still in bulk mode, manual equalisation is not possible.
To enable equalisation, press the "-" or "+" button until the text StArt will blink on the menu. Press
ENTER to start equalisation: the text StArt will stop blinking.
To return to the normal display mode, press SETUP during 2 seconds.
To terminate the equalisation mode prematurely, press the "-" or "+" button until the text StArt appears
on the menu. Press ENTER to terminate equalisation: the text StArt will start blinking
To return to the normal display mode, press SETUP during 2 seconds.
Current and voltage limits are identical to the automatic equalise function (see section 4.3). The
equalise duration is however limited to max. 1h when triggered manually.

11
EN Appendix
7. TROUBLESHOOTING
With the procedures below, most errors can be quickly identified. If an error cannot be resolved,
please refer to your Victron Energy supplier.
Error
nr. on
LCD
display
Problem Cause / Solution
n. a. The LCD does not
light up (no backlight,
no display)
The internal power supply used for powering the converter and the
backlight is derived from either the solar-array or the battery.
If PV and battery voltage are both below 6V the LCD will not light
up.
n. a. The LCD does not
light up (backlight
works, no display,
charger seems to
work)
This may be due to low ambient temperature.
If the ambient temperature is below -10
0
C (14
0
F) the LCD-
segments can become vague.
Below -20
0
C (-4
0
F) the LCD-segments can become invisible.
During charging the LCD-display will warm up, and the screen will
become visible.
n. a. The charge controller
does not charge the
battery
The LCD-display indicates that the charge-current is 0 Amps.
Check the polarity of the solar-panels.
Check the battery breaker
Check if there is an error indication on the LCD
Check if the charger is set to "ON" in the menu.
n. a. High temperature: the
thermometer icon
blinks
This error will auto-reset after temperature has dropped.
Reduced output current due to high temperature.
Check the ambient temperature and check for obstructions near
the air inlet and outlet holes of the charger cabinet.
Err 1 Battery temperature
too high (> 50
0
C)
This error will auto-reset after temperature has dropped.
This error can also be due to a bad/corroded battery- pole to which
this sensor is screwed on to, or a faulty sensor.
If error persists and charging does not resume, replace sensor,
and power-up by entering and leaving the setup menu..
Err 2 Battery voltage too
high (>76,8V)
This error will auto-reset after the battery voltage has dropped.
This error can be due to other charging equipment connected to
the battery or a fault in the charge controller.
Err 3 Suspected wrong
connection during
power-up.
Remote Tsense+
connected to BAT+
Check if the T-sense connector is properly connected to a remote
temperature sensor.
This error will auto-reset after proper connection.
Err 4 Suspected wrong
connection during
power-up.
Remote Tsense+
connected to BAT-
Check if the T-sense connector is properly connected to a remote
temperature sensor.
This error will auto-reset after proper connection.
Err 5 Remote temperature
sensor failure
This error will not auto-reset.
1. Press and hold the SETUP-button for 2 seconds to enter the
SETUP-MENU.
2. Set the charger from ON to OFF.
3. Scroll through the LCD-screens to find the battery temperature.
If the LCD indicates an unrealistic temperature value or "---"
replace
....the remote sensor.
4. Power-up by setting the charger from OFF to ON.
5. Check if the battery temperature is now valid.
Err 17 Controller overheated
despite reduced
This error will auto-reset after charger has cooled down.
Check the ambient temperature and check for obstructions near

12
output current the air inlet and outlet holes of the charger cabinet.
Err 18 Controller over-current This error will auto-reset.
Disconnect the charge controller from all power-sources, wait 3
minutes, and power up again.
If the error persists the charge controller is probably faulty.
Err 19 Reverse current
flowing from the
battery to the solar
array
This error will auto-reset.
The internal battery current sensor indicates that current is flowing
from the battery to the solar array.
The charge controller is probably faulty.
Err 20 Maximum Bulk-time
exceeded
This error can only occur when the maximun bulk-time protection is
active. This error will not auto-reset.
This error is generated when the battery-absorption-voltage is not
reached after 10 hours of charging.
For normal solar installations it is advised not to use the maximum
bulk-time protection.
Err 22 Internal temperature
sensor short
The charge controller is probably faulty.
This error will not auto-reset.
Err 23 Internal temperature
sensor connection lost
Disconnect all power-sources from the charger, and open the front
cover. Check if the white connector on the control-pcb (at the left of
the LCD) is properly connected.
If connected properly, close front cover and power-up again.
If the error persists the charge controller is probably faulty.
This error will auto-reset.
Err 33 PV over-voltage This error will auto-reset after PV-voltage has dropped to safe limit.
This error is an indication that the PV-array configuration with
regard to open-circuit voltage is critical for this charger. Check
configuration, and if required, re-organise panels.
Err 34 PV over-current The current from the solar-panel array has exceeded 50A. This
error could be generated due to an internal system fault.
Disconnect the charger from all power-sources, wait 3 minutes,
and power-up again. If the error persists the controller is probably
faulty.
This error will auto-reset.
Err
114
CPU temperature too
hot
This error will reset after the CPU has cooled down.
If the error persists, check the ambient temperature and check for
obstructions near the air inlet and outlet holes of the charger
cabinet.
Check manual for mounting instructions with regard to cooling. If
error persists the controller is probably faulty.

13
EN Appendix
8. SPECIFICATIONS
9. TEMPERATURE COMPENSATION
Figure1: temperature compensation curve
BlueSolar charge controller MPPT 150/70
Nominal battery voltage 12 / 24 / 36 / 48V Auto Select
Rated charge current 70A @ 40°C (104°F)
Maximum solar array input power 12V: 1000W / 24V: 2000W / 36V: 3000W / 48V: 4000W
Maximum PV open circuit voltage 150V
Minimum PV voltage Battery voltage plus 7 Volt to start Battery voltage plus 2 Volt operating
Standby power consumption 12V: 0,55W / 24V: 0,75W / 36V: 0,90W / 48V: 1,00W
Efficiency at full load 12V: 95% / 24V: 96,5% / 36V: 97% / 48V: 97,5%
Absorption charge 14.4 / 28.8 / 43.2 / 57.6V
Float charge 13.7 / 27.4 / 41.1 / 54.8V
Equalization charge 15.0 / 30.0 / 45 / 60V
Remote battery temperature
sensor Yes
Default temperature
compensation setting -2,7mV/°C per 2V battery cell
Programmable relay DPST AC rating: 240VAC/4A DC rating: 4A up to 35VDC, 1A up to 60VDC
CAN bus communication port Two RJ45 connectors, NMEA2000 protocol
Operating temperature -40°C to 60°C with output current derating above 40°C
Cooling Natural Convection
Humidity (non condensing) Max. 95%
Terminal size 35mm² / AWG2
Material & color Aluminium, blue RAL 5012
Protection class IP20
Weight 4,2 kg
Dimensions (h x w x d) 350 x 160 x 135 mm
Mounting Vertical wall mount Indoor only
Safety EN60335-1
EMC EN61000-6-1, EN61000-6-3
Battery
Voltage
Battery temperature
25 °C 50 °C10 °C
Float
Absorption

14
10. OVERVIEW CONNECTIONS
1 Temperature sense
2. Voltage sense
3. Battery
4. Solar array
5.Ground connection (PE)
6. 2x CAN Bus RJ45
7. Programmable relay
1
2
3
4
6
7
flatcable
5

15
EN Appendix