Solar MD SS4037-02 User manual
Solar MD (PTY) ltd.
Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
INSTALLATION MANUAL
SS4037-02
Advanced Lithium-Ion battery
Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Introduction 2
Product Description 2
Product Specifications 2
Errors or Inaccuracies 2
Copyrights 3
Safety Information 3
⚠ Warnings ⚠ Cautions 3
Specification 4
Mechanical installation 5
Installing bottom cover plate 6
Electrical installation 7
Commissioning 9
Multicolor multipurpose button 10
Button function 10
Button indication 10
BMS Warnings and Errors 12
CANBUS connection. 16
CANBUS warnings. 17
Troubleshooting Warnings / Errors 18
Maximum charging / discharging voltages for non supported
devices. 19
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Introduction
This manual is intended to provide assistance to an installer for the installation and
commissioning of the range of Solar MD Lithium Ion phosphate (LiFePO4) energy storage
solutions.
Product Description
The SS4037-02 battery solution is available in one standard size and can be paralleled to
meet most residential applications. The rated voltage is 51.2V nominal (to suit 48V systems).
Larger systems are provided by Solar MD based on specific project requirements. The
SS4037-02 is also available in 24V and 12V systems respectively.
WARNING: Read the entire document before installing or using the Solar MD battery. Failure
to comply with the instructions or warnings in this document could result in electrical shock or
serious injury that can result in death or damage to the product that can render the SS4037
Solar MD battery inoperable.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Product Specifications
All SS4037-02 specifications & descriptions contained in this document are verified to be
accurate at the time of printing. Solar MD reserves the right to make any product Revisions &
improvements at any time.
Errors or Inaccuracies
To communicate any inaccuracies, omissions or to provide general feedback regarding this
manual, send an email to [email protected]
Copyrights
All information in this document is subject to the copyright of Solar MD (Pty) Ltd. Additional
information is available upon request.
Safety Information
This manual contains important instructions and warnings that must be followed when using
SS4037-02.
Read all instructions before installing and using the SS4037-02.
⚠ Warnings ⚠ Cautions
● Use SS4037-02 only as instructed.
● For communication and other information please read the BMS manual.
● Do not attempt to disassemble, repair, modify, or tamper with this battery unit.
● Do not insert foreign objects into any part of battery unit.
● Avoid exposure to any moisture.
● Do not expose to extreme temperatures.
● Do not drill any holes into the box.
● Use only an approved Solar MD installer to install this product.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Specification
Solar MD 3.7kWh SS4037-02 specification
Battery type
Lithium Iron
Phosphate
Scalability
Yes
r Battery module
SS4037
Communication
CANBUS 500kbps/CAN 2.0B
Rated battery capacity
3686 Wh
Can BUS termination
Single 120 Ohm
Output power
Max 5 kW / 100A
Canbus id range:
256 - 499
Usable battery energy @ 0.3\C
3.68 kWh
Protection method
Cell level: uv / ov / oc
Position: x / y / x
Acceleration: x / y / z
Temperature: ot / ut
Nominal voltage
51.2V
Protection phy
Mechanical relay NO
Number of battery modules
1 module
Com (CANBUS ) isolation
Yes 1.5kV
Weight
37kg
Transportation protection
Yes
Operating voltage
44.8V-55.6Vdc
Indicator
Led, programmable
Communication
CANBUS
Addition IO
3 GPO
Dimensions of SS44037: h/w/d
620mm/320mm
/200mm
Cell balancing
Passive balancing
Net Weight of SS4037
35 Kg
Counters
Cycle counters and SoH
Battery cycle life [+25 ‘C]
> 4000
AUX power output
5V 1A max
Charging efficiency
99%
Storage duration
6 months@+25℃
Operating temperature
-5℃ ~+50℃
Safety standards compliance
IEC 62619/UN 38.3/UL1642
Transport
UN3480 & UN38.3
Cell Certificate
TUV / CE / RCM / UL1642
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Mechanical installation
Figure 1: Rear Battery Bracket
Please use the correct mounting screws for the correct wall surface. Screw head should not
be bigger than 16mm in diameter. The Battery is only to be installed in the upright position
with a maximum tilt angle of 30 degrees.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Figure 2: Maximum tilt angle
Installing bottom cover plate
Figure 3: Bottom cover installation for single or dual cable exit points
The Battery comes with two covers for single or dual cable exit points. Use the 1 or 2 way out cover
plate and fix it with the two M5x6 bolts provided in the box.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Electrical installation
Step 1. Before connecting anything be sure that battery is off and the ON/OFF switch (fig4
pos 3) is in the OFF position.
Figure 4: BMS board component location
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Connecting Inverters/chargers/UPS to the battery unit while it is ON can cause big sparks
due to capacitors inside the connected device. This could cause serious injuries.
Connecting main battery terminal must be with the correct size cable.
Based on the rated current of the battery and inverter as well as cable length.
Figure 5 connection terminal
Step 2. Connect the negative cable to the battery negative busbar and positive to battery
positive as shown is figure 5 Make sure that all the connections are tight.
All used connection points should be a suitably tightened, ensuring good electrical
connection between the lug and busbar. A bad connection could cause serious damage to
the battery and inverter, and could void the warranty.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Commissioning
Step 1. Ensure all DC cables are tight according to specifications.
Step 2. If the battery operates in parallel with other Energy sources, make sure that the
difference between battery voltage and DC bus is not more than 2.5V. If greater than 2.5V
please Charge or Discharge other source accordingly until voltage difference is in safe
ranges under 2.5V.
Caution! A hot connection with difference in voltage can cause very high
equalization current which can burn the fuses of the battery!
Caution! Measure the voltage of the battery before connecting the dc
Cables.
Step 3. Turn BMS board ON/OFF switch to the ON position (figure 4 pos 3)
Step 4. Connect Multi-purpose button if not connected to the BMS board connector see
(figure 4 pos 5)
Step 5. Hold multi-purpose button until light come on.
Note: If commissioning two or more batteries.
Once the system is switched on and load is added, measure current flow on
each battery. Ensure that the load is distributed across each battery equally.
Warning! If the battery does not switch the main protection Contact ON in 7
seconds, please check BMS board indication LED for faults. See section BMS
Error and Warnings on page 13 of this manual.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Multicolor multipurpose button
Figure 6 : Multicolor / Multipurpose button
.
Button function
The new Solar MD Multipurpose button has an extended functionality in combination with the BMS-EM v10.01.
The Multipurpose Button can be used to directly execute 6 predefined functions and a shutdown instruction. In
combination with the 6 Indication LEDs on BMS-EM v10.01, the user can choose between each function by
holding the button until the LEDs count match the number of the function. By releasing the button while moving
through the functions, LEDs will start blinking and wait for the user to press the button again within 3 seconds.
The predefined functions are:
1. Reserved
2. Change indication LED function between: Show Capacity, Show Current, and
Off
3. Reserved
4. Wake up if Sleep mode is active.
5. Activate Override Off state for 60sec
6. Activate Override On state for 60sec
If the button is held continuously after function 6, shutdown mode is activated and the battery will send a signal
to switch off in 4sec.
Further holding the button causes the BMS to delay complete shutdown for a maximum of 3 minutes. This
operation is used when the technician wants to continue read or write parameters after shutdown.
Button indication
The Multipurpose button advanced indication functionality, allows the user to choose between 5 different
states. Mixed combinations are also allowed when a combination of multiple batteries with BMS-EM v10.01 are
used. The User can change the preferedstage by logging into his mypower24 Energy Portal and go to the
Battery Settings.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Illumination off
When this state has been selected, the button serves as an on/off switch without illumination (fixed color).
Color based on capacity
When this state has been selected, the button shows static illumination in a color based on the state of charge.
From RED at 0% SoC (State of Charge) to GREEN at 100% state of charge.
Color based on capacity with current direction based on shading.
When this state has been selected, the button shows flashing illumination in a color based on the state of
charge and flashing code based on the electrical current direction (charge / discharge). From RED at 0% SoC
(State of Charge) to GREEN at 100% state of charge. The flashing code for charge goes through illumination
interruption for 1 interval and slow illumination into the color based on the SoC for 5 intervals. The flashing
code for discharge represents the opposite from charge - study color for 1 interval and slow loss of color
following illumination interruption. Solar MD users refer for both as charging / discharging waves.
Fixed color with current direction based in shading
When this state has been selected, the button shows illumination in a color based on the user choice and
flashing code based on the electrical current direction (charge / discharge). The flashing code for charge goes
through illumination interruption for 1 interval and slow illumination for 5 intervals. The flashing code for
discharge represents the opposite from charge - study color for 1 interval and slow loss of color following
illumination interruption. Solar MD users refer for both as charging / discharging waves.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
BMS Warnings and Errors
Method of displaying general warnings and errors:
Figure 7 : Display general warnings and errors, Main stat LEDs and Indication LEDs
The board uses 2 main LED for displaying warnings and Errors. If an Error is present the ERROR LED
(fig. 7 top right) will start blinking synchronized with the LEDs at Indication led group (fig. 7 bottom). If
Warning is present the WARN LED (fig. 7 top middle ) will start blinking synchronized with Some LEDs at
Indication led group (fig. 7 bottom). Reading Indication LEDs will show you the exact error or warning.
Errors are always with priority regardless warnings. This means that the board will show you only the error
on the Indication LEDs if both Error and Warnings are present.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Warning codes.
Figure 8. Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Orange Stat LED (WARNING)
◼ + ◻◻◻◻◻◼ - Battery cell voltage is too low. [1]
◼ + ◻◻◻◻◼◻ - Battery cell voltage is too high. [2]
◼ + ◻◻◻◻◼◼ - Battery charging current is higher than the maximum allowed
charging current . [3]
◼ + ◻◻◻◼◻◻ - Battery discharging current is higher than the maximum allowed
electrical discharging current. [4]
◼ + ◻◻◻◼◻◼ - Override ON active, protection is forced to work at extreme levels for
preset period. [5]
◼ + ◻◻◻◼◼◻ - Override OFF active, protection is forced to switched off the main
protection relay for preset period. [6]
◼ + ◻◼◼◼◻◼ - Pending awake LOW state indicate that battery is forced to switched
On for predefined amount of time normally 1min waiting for charger to
start charging.[29]
◼ + ◻◼◼◼◼◻ - Pending awake HIGH state indicate that battery is forced to
switched Off and waiting for all voltages to drop in safe margins.[30]
Addition configuration are used for internal diagnostic.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Error codes.
Figure 9. Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Red Stat LED (ERROR)
◼ + ◻◻◻◼◻◼ - Battery position X axis is out of range. [5]
◼ + ◻◻◻◼◼◻ - Battery position Y axis is out of range. [6]
◼ + ◻◻◻◼◼◼ - Battery position Z axis is out of range. [7]
◼ + ◻◻◼◼◻◻ - Battery Protection in critical stage, pending shutdown in 3sec. [12]
◼ + ◻◻◼◼◻◼ - Battery Protection in critical stage, Override mode reached the
maximum permitted values, pending shutdown in 3sec. [13]
◼ + ◻◻◼◼◼◻ - Battery Protection in critical stage, Normal mode reached the
maximum permitted values, pending shutdown in 3sec. [14]
◼ + ◻◻◼◼◼◼ - Battery Protection in critical stage, pending shutdown in 3sec. [15]
◼ + ◻◼◻◻◻◻ - Remote Shutdown instruction received, pending shutdown in 3sec. [16]
◼ + ◻◼◻◻◻◼ - User Shutdown instruction received, pending shutdown in 3sec. [17]
◼ + ◻◼◻◻◼◻ - Discharging current is too high. [18]
◼ + ◻◼◻◻◼◼ - Charging current is too high. [19]
◼ + ◻◼◻◼◻◼ - Incorrect cell count detected. [21]
◼ + ◻◼◻◼◼◻ - Cell voltage too low. [22]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Error codes continued.
Figure 10 Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Red Stat LED (ERROR)
◼ + ◻◼◻◼◼◼ - Cell voltage too high. [23]
◼ + ◻◼◼◻◻◻ - Internal error. Additional information on request.[24]
◼ + ◻◼◼◻◻◼ - Internal error. Additional information on request.[25]
◼ + ◻◼◼◻◼◻ - Internal error. Additional information on request.[26]
◼ + ◻◼◼◻◼◼ - Internal error. Additional information on request.[27]
◼ + ◻◼◼◼◻◻ - Internal error. Additional information on request.[28]
◼ + ◻◼◼◼◻◼ - Internal error. Additional information on request.[29]
◼ + ◻◼◼◼◼◻ - Internal error. Additional information on request.[30]
◼ + ◻◼◼◼◼◼ - Internal error. Additional information on request.[31]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
CANBUS connection.
Bms EM used CAN 2.0B @ 500000 kb. Connecting other device operating at different speed rate is not
allowed. For connection please use twisted pair wires in a shielded cable to minimize RF emissions.
The output of the BmsEm CAN transceiver is galvanically isolated.
Figure 11: BMS-EM connection to the CANBUS.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
CANBUS warnings.
Figure 12 CANBUS Termination resistor and Warning LED location
The Orange LED (WARN) is used to display warning for canbus only. Reading this warning is
possible with pulse counting.
- CANBUS line open or no termination resistor set. [1]
......
- CAN BUS line in initialization stage. Canbus init occur when the line was opened and then
established. Minimum period for initialization is 30sec. In this period all nodes are scanned in the
network and scanned for ID and serial number collisions. [2]
- Duplicate CAN ID detected with no “auto ID” set. [3]
- Duplicate Serial number detected. [4]
- CANBUS Internal fault. [5]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Troubleshooting Warnings / Errors
Error
Code
Cause
Solution
Warnings ( Figure 8)
1-2
1. Inverter / rectifier settings may not be correct.
2. Battery cells may be disbalanced
1. Check the battery settings
2. Contact Solar MD support
3-4
System design is not correct.
Add additional battery, decrease charging /
discharging current from
your inverter / rectifier / load
5-6
Manual override
Manual override has been activated - please
check with your installer
29-30
The BMS is ready to switch on after deep discharge / charge
Connect charger / load to the Battery
Errors (Figure 9 & 10)
5,6,7
The battery is not installed in upright position
Install the battery in the right position
15,16,17
The BMS has been shut down manually or remotely
Switch on the BMS
18,19
The absolute maximum charge/discharge current has been
achieved
The BMS will restart automatically, please
contact support team or approved installer
21
The BMS is set for different number cells in series as the actually
installed
Contact your installer or Solar MD support team
22
Battery cell voltage way too low.
Fill in the failure report and send to
The unit needs to return to the factory for testing
23
Battery cell voltage way too high
The BMS will restart automatically after pending
awake condition
24,25,26,
27,28,30,
31
BMS internal failure.
Fill in the failure report and send to
The BMS will be dispatched to you for
replacement
29
Battery factory failure
Fill in the failure report and send to
The unit needs to return to the factory for testing
CANBUS Warning (Figure 12)
1
1. Canbus line open.
2. Single CANBUS resistor not terminated.
1.Check if the minimum of two nodes are
connected on the line with the same
transmission speed.
2.Check if single resistor is terminated via the
jumper. Located top right of CAN LEDs (Fig 12).
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Maximum charging / discharging voltages for non supported devices.
- Bulk charge (stop charging) 54.6V
- Float charge (if applicable) 53.8V
- Low battery discharge: 48V
Check that the Equalisation function are disalled, then verify if there is a voltage difference on
the inverter display and the battery terminals @0.3C discharge / charge current. If so adjust
the values above.
Please check if your inverter charger has been approved by Solar MD and it is CAN
compatible.
For the latest Solar MD installation documents go to:
shop.solarmd.co.za
To secure the full 10-year product warranty for the end user, be
sure to register your battery online – login.mypower24.co.za.
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