FSP Technology LightUp L11K User manual

Version: 1.1
User Manual
LightUp L11K
Off-grid Solar Inverter

Table of Contents
ABOUT THIS MANUAL.................................................................................................................................1
Purpose.....................................................................................................................................................1
Scope ........................................................................................................................................................1
SAFETY INSTRUCTIONS.............................................................................................................................1
INTRODUCTION...........................................................................................................................................2
Features.....................................................................................................................................................2
Basic System Architecture..........................................................................................................................2
Product Overview.......................................................................................................................................3
Unpacking and Inspection..........................................................................................................................4
Preparation................................................................................................................................................4
Mounting the Unit.......................................................................................................................................4
Battery Connection.....................................................................................................................................5
AC Input/Output Connection.......................................................................................................................6
PV Connection...........................................................................................................................................7
FinalAssembly.........................................................................................................................................10
Remote Display Panel Installation............................................................................................................10
Communication Connection...................................................................................................................... 11
Dry Contact Signal ...................................................................................................................................12
BMS Communication................................................................................................................................12
OPERATION ...............................................................................................................................................13
Power ON/OFF........................................................................................................................................13
Inverter Turn-on........................................................................................................................................13
Operation and Display Panel....................................................................................................................13
LCD Display Icons....................................................................................................................................14
LCD Setting .............................................................................................................................................16
LCD Display.............................................................................................................................................31
Operating Mode Description.....................................................................................................................37
Faults Reference Code.............................................................................................................................39
Warning Indicator.....................................................................................................................................40
BATTERY EQUALIZATION.........................................................................................................................41
SPECIFICATIONS.......................................................................................................................................42
Table 1 Line Mode Specifications...............................................................................................................42
Table 2 Inverter Mode Specifications.........................................................................................................43
Table 3 Charge Mode Specifications..........................................................................................................44
Table 4 General Specifications...................................................................................................................45
TROUBLE SHOOTING................................................................................................................................46
Appendix I: Parallel function.....................................................................................................................47
Appendix II: BMS Communication Installation.........................................................................................60
Appendix III: The Wi-Fi Operation Guide in Remote Panel ......................................................................66

1
ABOUT THIS MANUAL
Purpose
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read
this manual carefully before installations and operations. Keep this manual for future reference.
Scope
This manual provides safety and installation guidelines as well as information on tools and wiring.
SAFETY INSTRUCTIONS
WARNING: This chapter contains important safety and operating instructions. Read and keep
this manual for future reference.
1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries and all
appropriate sections of this manual.
2. CAUTION --To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries.
Other types of batteries may burst, causing personal injury and damage.
3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
Incorrect re-assembly may result in a risk of electric shock or fire.
4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
5. CAUTION – Only qualified personnel can install this device with battery.
6. NEVER charge a frozen battery.
7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable
size. It’s very important to correctly operate this inverter/charger.
8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop
a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please
refer to INSTALLATION section of this manual for the details.
10. Fuses are provided as over-current protection for the battery supply.
11. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded
wiring system. Be sure to comply with local requirements and regulation to install this inverter.
12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input
short circuits.
13. Warning!! Only qualified service persons are able to service this device. If errors still persist after
following troubleshooting table, please send this inverter/charger back to local dealer or service
center for maintenance.
14. WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable:
single crystalline, poly crystalline with class A-rated and CIGS modules. To avoid any malfunction, do
not connect any PV modules with possible current leakage to the inverter. For example, grounded PV
modules will cause current leakage to the inverter. When using CIGS modules, please be sure NO
grounding.
15. CAUTION: It’s required to use PV junction box with surge protection. Otherwise, it will cause
damage on inverter when lightning occurs on PV modules.

2
INTRODUCTION
This is a multi-function inverter, combining functions of inverter, solar charger and battery charger to offer
uninterruptible power support in a single package. The comprehensive LCD display offers user-configurable
and easy-accessible button operations such as battery charging current, AC or solar charging priority, and
acceptable input voltage based on different applications.
Features
Pure sine wave inverter
Configurable color with the built-in RGB LED bar
Built-in Wi-Fi for mobile monitoring (APP is required)
Supports USB On-the-Go function
Built-in anti-dusk kit
Detachable LCD control module with multiple communication ports for BMS (RS485, CAN-BUS, RS232)
Configurable input voltage ranges for home appliances and personal computers via LCD control panel
Configurable AC/PV output usage timer and prioritization
Configurable AC/Solar charger priority via LCD control panel
Configurable battery charging current based on applications via LCD control panel
Compatible to utility mains or generator power
Auto restart while AC is recovering
Overload / Over temperature / short circuit protection
Smart battery charger design for optimized battery performance
Cold start function
Basic System Architecture
The following illustration shows basic application for this unit. It also required the following devices to have a
complete running system:
Generator or Utility mains.
PV modules
Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power various appliances in home or office environment, including motor-type appliances
such as tube light, fan, refrigerator and air conditioners.
Figure 1 Basic hybrid PV System Overview

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Product Overview
NOTE: For parallel installation and operation, please check
Appendix I.
1. LCD display 12. Current sharing port
2. Status indicator 13. Parallel communication port
3. Charging indicator 14. Dry contact
4. Fault indicator 15. USB port as USB communication port and USB function
5. Function buttons port
6. Power on/off switch 16. BMS communication port: CAN, RS-485 or RS-232
7. AC input connectors 17. Output source indicators (refer to OPERATION/Operation
8. AC output connectors (Load connection) and Display Panel section for details) and USB function
9. PV connectors setting reminder (refer to OPERATION/Function Setting for
10. Battery connectors the details)
11. Remote LCD module communication 18. RS-232 communication port
Port 19. RGB LED bar (refer to LCD Setting section for the details)

4
INSTALLATION
Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should
have received the following items inside of package:
Inverter unit Manual software CD RS-232 cable Parallel communication cable Current sharing cable
DC Fuse Cable gland x 5 pcs PV connectors x 2 sets
Preparation
Before connecting all wirings, please take off bottom cover by removing five screws. When removing the
bottom cover, be carefully to remove three cables as shown below.
Mounting the Unit
Consider the following points before selecting where to install:
lDo not mount the inverter on flammable construction materials.
lMount on a solid surface
lInstall this inverter at eye level in order to allow the LCD display to be
read at all times.
lThe ambient temperature should be between 0°C and 55°C to ensure
optimal operation.
lThe recommended installation position is to be adhered to the wall
vertically.
lBe sure to keep other objects and surfaces as shown in the right diagram
to guarantee sufficient heat dissipation and to have enough space for
removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

5
Install the unit by screwing four screws. It’s recommended to use M4 or M5 screws.
Battery Connection
CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current
protector or disconnect device between battery and inverter. It may not be requested to have a disconnect
device in some applications, however, it’s still requested to have over-current protection installed. Please refer
to typical amperage in below table as required fuse or breaker size.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
Recommended battery cable and terminal size:
Model Typical
Amperage Battery capacity Wire Size Cable
mm2
Ring Terminal
Torque
value
Dimensions
D (mm) L (mm)
11KW 228A 250AH 1*3/0AWG 85 8.4 54 5 Nm
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Fix two cable glands into positive and negative terminals.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the nuts are
tightened with torque of 5 Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
Ring terminal:

6
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring
terminal. Otherwise, overheating may occur.
CAUTION!! Do not apply anti-oxidant substanceon the terminals before terminals are connected
tightly.
CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure
positive (+) must be connected to positive (+) and negative (-) must be connected to negative
(-).
AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between
inverter and AC input power source. This will ensure the inverter can be securely disconnected during
maintenance and fully protected from over current of AC input.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input
and output connectors.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC
input connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model Gauge Torque Value
11KW 8 AWG 1.4~ 1.6Nm
Please follow below steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Fix two cable glands into input and output sides.
4. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws.
Be sure to connect PE protective conductor ( )first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

7
5. This inverter is equipped with dual-output. There are four terminals (L1/N1, L2/N2) available on output
port. It is to set up through LCD program or monitoring software to turn on and off the second output.
Refer to “LCD setting” section for the details.
Before making wiring of second output, please remove knockout and install the cable gland first.
Insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Be
sure to connect PE protective conductor ( )first.
→Ground (yellow-green)
L1→LINE (brown or black)
N1→Neutral (blue)
L2→LINE (brown or black)
N2→Neutral (blue)
6. Make sure the wires are securely connected.
PV Connection
CAUTION: Before connecting to PV modules, please install separately DC circuit breakers between inverter
and PV modules.
NOTE1: Please use 600VDC/30A circuit breaker.
NOTE2: The overvoltage category of the PV input is II.
Please follow the steps below to implement PV module connection:
Step 1: Check the input voltage of PV array modules. This system is applied with two strings of PV array.
Please make sure that the maximum current load of each PV input connector is 18A.
Step 2: Disconnect the circuit breaker and switch off the DC switch.
Step 3: Assemble provided PV connectors with PV modules by the following steps.
CAUTION: Important
Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause
utility short-circuited when these inverters are worked in parallel operation.
CAUTION: Appliances such as air conditioner requires at least 2~3 minutes to restart because it’s required
to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers
in a short time, it will cause damage to your connected appliances. To prevent this kind of damage, please
check manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise,
this inverter/charger will be trigger overload fault and cut off output to protect your appliance but sometimes
it still causes internal damage to the air conditioner.
CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the system before wire connection.
WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single
crystalline and poly crystalline with class A-rated and CIGS modules.
To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For
example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please
be sure NO grounding.
CAUTION: It’s required to use PV junction box with surge protection. Otherwise, it will cause damage on
inverter when lightning occurs on PV modules.

8
Components for PV connectors and Tools:
Female connector housing
Female terminal
Male connector housing
Male terminal
Crimping tool and spanner
Prepare the cable and follow the connector assembly process:
Insert striped cable into female terminal and crimp female terminal as shown below.
Insert assembled cable into female connector housing as shown below.
Insert striped cable into male terminal and crimp male terminal as shown below.
Insert assembled cable into male connector housing as shown below.
Then, use spanner to screw pressure dome tightly to female connector and male connector as shown below.
Step 4: Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect
positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of
connection cable to negative pole (-) of PV input connector.
WARNING! For safety and efficiency, it's very important to use appropriate cables for PV module connection.
To reduce risk of injury, please use the proper cable size as recommended below.
Conductor cross
-
section
(mm
2
)
AWG no.
4~6 10~12
CAUTION: Never directly touch the terminals of inverter. It might cause lethal electric shock.
Strip one cable 8 mm on both end sides and be careful NOT to nick
conductors.