SunSynk SUN-8.0 Bedienungsanleitung

Sunsynk Hybrid Inverters with

lithium-ion batteries

Introduction

Sunsynk inverter(s) and lithium-ion batteries is the ideal package for self-consumption, o-grid and back-up

solar PV systems. The Sunsynk hybrid inverter is a bi-directional energy storage unit that consists of the 5kW

and 8kW single phase inverter models. On the other hand, the Pylontech 48V batteries and FreedomWon

range models are the recommended batteries for use with the Sunsynk series inverters.

Interfacing with the Inverter

NB. Only connect the batteries to the inverter until the settings are complete, no PV or grid sources. See

*Note in Battery section

The inverter settings are congured on the touch screen LCD of the inverter.The screen/inverter should come

on when a power source is connected i.e., PV, Grid or Battery. Before installing batteries with the inverter,

please ensure that they are both compatible as the system will not work if the two are not compatible. Below,

Figure 1, is an image of how the settings page of the Sunsynk inverter looks like

Figure 1: Sunsynk settings page

This tab allows the user to enter details such as the time, display name etc. Please ensure that the correct

time settings are entered as this could inuence the functionality of the inverter especially if timed settings

will be use.

Before continuing with the installation, please ensure

that the inverter and battery being installed are

compatible with each other. When the inverter is

connected to the battery, the inverter should be able

to adopt the BMS parameters. This can be checked

under Li-BMS in the settings menu. An example of what

should be seen is in Figure 2 for CAN communication.

Go to the“Battery”under the settings menu. Press“Shut

Down” and set “Shut down” at 3%, “Low Batt” at 5% as

shown in Figure 3. NB: This dier from manufacturer,

please ensure that the correct values are set for batteries

not supplied by Segen.

Press “Batt type”. Choose battery mode “Lithium”, input

the capacity of the battery, charge/discharge currents

according to the battery bank. For the protocol, please

ensure that you follow the notes on the compatibility

table as per manual.Then tick“BMS_Err_Stop”as shown

in Figure 4.

2.1 Basic

2.2 Battery

*Note: Ensure that the Grid and PV power sources are turned o before starting the inverter and until the

battery communication and conguration is successful. Failure to do this could result in the Pylon batteries

being damaged.

Figure 2: Li-BMS page

Figure 3: Battery Shut Down settings

Figure 4: Battery type settings

On the“Battery”page under settings, go to“Batt type”and ensure that“Activate”is ticked and that“Lithium”is

selected as in Figure 4. Freedom Won uses CAN communication so ensure“CAN”is selected and the Protocol

is set to 0. The“Batt capacity”,“Charge Amps”and“Discharge Amps”will be dependent on the type of battery

you have as well as the bank size. Finally, ensure that “BMS_Err_Stop” is ticked.

Sunsynk US3000C/US2000C/UP5000 setup

Before commencing with the installation please ensure that the BMS cable is as per denition in Figure 6.

After the communication cable is connected, please ensure that the Li-BMS page under settings is as in

Figure 2. Please note that values may vary depending on the battery used.

Table 1: Suggested discharge currents

Before commencing with the installation please ensure

that the BMS cable is as per denition in Figure 5. After

the communication cable is connected, please ensure

that the Li-BMS page under settings is as in Figure 2.

Please note that values may vary depending on the

battery used.

Sunsynk Freedom Won setup

Figure 5: Sunsynk and

Freedom Won BMS cable

pinouts

Suggested Discharge Current Limits

Continues Discharge/Charge Current

Note: Pylon connectors are limited to 125A

No batteries per

stack

1 2 3 4 5

Pylontech US2000 25 50 75 100 125

Pylontech US3000C 37 74 111 148 185

Pylontech UP5000 50 100 150 200 250

Figure 6: Pinout congurations for

new Pylontech batteries

Sunsynk US3000/US2000B setup

2.3 System Mode

On the “Battery” page under settings, go to “Batt type” and ensure that “Activate” is ticked and that

“Lithium” is selected as in Figure 4. For Pylontech CAN communication ensure “CAN” is selected and the

Protocol is set to 0. The “Batt capacity”, “Charge Amps” and “Discharge Amps” will be dependent on the

type of battery you have as well as the bank size. Finally, ensure that “BMS_Err_Stop” is ticked

On the “Battery” page under settings these settings will

be the same as that of the other Pylontech batteries i.e.,

US3000C/US2000C and UP5000.

The “System Mode” page is where the installer can program charge and discharge times. These settings are

dependent on the application and purpose the system will serve. For further details please visit the manual.

Figure 4 is an illustration of what each box does and how it can be utilized.

1. Tick this box to do not export power back to the grid (the CT coil will detect power owing back to the

grid and will reduce the power of the inverter only to supply the local load).

2. Tick this box if you wish to export your solar power back to the grid.

3. Tick this box if you only want to supply power to the load side of the inverter.

4. Zero export power is the amount of power owing from the grid to the inverter. Set this value to 20

– 100W to force the inverter to always take this amount of power from the grid to minimize nuisance

tripping “Reverse Power Detection” of sensitive prepaid electricity meters.

5. This controls the maximum overall power, both to the load and grid ports combined. It is set to low if an

over current fault occurs.

6. Tick this box if you wish that the solar panels prioritize power to the load. But if you untick the solar will

prioritize the power to charge the batteries.

Figure 7: Pinout

congurations for old

Pylontech batteries

Before commencing with the installation please

ensure that the BMS cable is as per denition in Figure

7. After the communication cable is connected, please

ensure that the Li-BMS page under settings is as in

Figure 2. Please note that values may vary depending

on the battery used.

Concerning the detailed Figure 4:

The SegenSolar portal has a System Designer tool which allows you to create your systems. Please speak

to your account manager if you require training on how to use the System Design tool. The design tool will

allow you to create a quote quickly and easily with all the necessary components

Figure 8: System Mode page setup

End page

JOHANNESBURG

245 Masjien Street, Strijdompark,

Randburg, Gauteng, 2194

Email: info@segensolar.co.za

Johannesburg: +27 (0) 11 085 2600 /

087 802 0663

CAPE TOWN

1 Gulfstream Avenue

Matroosfontein, Cape Town

Western Cape, 7490

Email: info@segensolar.co.za

Cape Town: +27 (0) 21 001 0589

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