Felicitysolar SCCM4548 Solar MPPT Controller SCHM Series User Guide

Felicitysolar SCCM4548 Solar MPPT Controller SCHM Series

ABOUT THIS MANUAL

1. 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.

2. Scope
   This manual provides safety and installation guidelines as well as information on tools and wiring.

3. 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. 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.

3. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
   Turning off the unit will not reduce this risk.

4. CAUTION – Only qualified personnel can install this device with battery.

5. NEVER charge a frozen battery.

6. For optimum operation of this charger, please follow required spec to select appropriate cable size. It’s very important to correctly operate this charger.

7. 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.

8. Please strictly follow installation procedure when you want to disconnect PV or battery terminals. Please refer to Installation section of this manual for the details.

9. GROUNDING INSTRUCTIONS -This charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulation to install this charger.

10. NEVER cause short-circuited on battery output.

11. Warning!! Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this charger back to local dealer or service center for maintenance.

INTRODUCTION

Thank you for selecting this solar charge controller. This solar charge controller is an advanced solar charger with maximum power point tracking. Applying intelligent MPPT algorithm, it allows solar charge controller to extract maximum power from solar arrays by finding the maximum power point of the array.

The MPPT battery charging process has been optimized for long battery life and improved system performance.Self-diagnostics and electronic error protections prevent damage when installation errors or system faults occur. The charger also has a multi-functional LCD and communication port to monitor controller status.

Features

• Intelligent Maximum Power Point Tracking technology increases efficiency 25%~30%
• Compatible for PV systems in 96V~ 384V(from 8 packs to 32 packs)
• Three-stage charging optimizes battery performance (Two-stage charging in lithium battery mode)
• Maximum charging current up to 25/ 50A
• Maximum efficiency up to 98%
• Supports lithium battery and various lead-acid batteries, AGM and gel battery
• Integrated intelligent slot compatible with MODBUS communication

Product Overview

1. LCD display
2. Power On indicator
3. Charging indicator
4. Fault and warning indicator
5. Operation button
6. Battery Positive +
7. Battery Negative –
8. PV Positive +
9. PV Negative –
10. Communication Port

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:

• Solar charge controller x 1
• User manual x 1
• Screw x n
• Guarantee card x 1

Preparation

Before connecting all wirings, please take off wiring box cover by removing screws as shown below.

Mounting the Unit

Consider the following points before selecting where to install:

• This solar charge controller is designed in IP20 for indoor applications only.
• Do not mount the unit on flammable construction materials.
• Mount on a solid surface
• Install this charger at eye level in order to allow the LCD display to be read at all times.
• For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to the side and approx. 50 cm above and below the unit.
• The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
• The recommended installation position is to be adhered to the wall vertically.

Install the unit to the wall by screwing two screws.
Refer to right chart.

Power Connection

Wire size

The four large power terminals are sized for 14 – 2 AWG (2.5 – 35mm 2 ) wire. The terminals are rated for copper and aluminum conductors. Use UL-listed Class B 600Volt stranded wire for SCHM50240 model/1000Volt stranded wire for SCHM25384 model. Good system design generally requires large conductor wires for solar module and battery connections that limit voltage drop losses to 2% or less.

Minimum Wire Size

The table below provides the recommended minimum wire size allowed for the charger.
Wire types rated for 75°C and 90°C are listed.

Recommended wire size:

Overcurrent Protection and Disconnects

CAUTION: Circuit breakers or fuses must be installed in both battery and solar circuits.
The battery circuit breaker or fuse must be rated to 125% of the maximum current or more. The recommended breaker/fuse rating for use with the charger is listed in the below table.

Recommended breaker rating:

****A disconnect is required for the battery and solar circuits to provide a means for removing power from the charger. Double pole switches or breakers are convenient for disconnecting both solar and battery conductors simultaneously.

Connect the Power Wires
The solar modules can produce open-circuit voltages in excess of 100 Vdc when in sunlight. Verify if solar input breaker or disconnect has been opened (disconnected)before connecting system wires.

WARNING: Shock Hazard

Connect terminals by following below steps (Refer to diagram above):

1. Make sure that the system input and output disconnect switches are both turned off before connecting power wires to the charger. There are no disconnecting switches inside the charger.

2. Make 4 power wires first. M6 wiring terminal is selected.
   Refer to the chart below.

3. Pull all wires into the wiring box.
   WARNING: Risk of Damage
   Be sure that the battery connection is made with correct polarity. Turn on the battery breaker/disconnect and measure the voltage on the open battery wires BEFORE connecting to the controller. Disconnect the battery breaker/disconnect before wiring to the controller.

4. Connect positive terminal (+) of battery to the battery positive terminal (+) on the controller.

5. Connect negative terminal (-) of battery to the battery negative terminal (-) on the controller.
   WARNING : Risk of Damage
   Be sure that solar connection is made with correct polarity. Turn on the solar breaker/disconnect and measure the voltage on the open wires BEFORE connecting to the controller. Disconnect solar breaker/disconnect before wiring to the controller.

6. Connect positive wire (+) of solar module to the PV positive terminal (+) on the controller.

7. Connect negative wire (-) of solar module to the PV negative terminal (-) on the controller.

8. Screw four (4) power terminals tightly with 50 in-lbs torque. (5.65 Nm)

Grounding and Ground Fault Interruption
Use a copper wire to connect the grounding terminal in the wiring box to earth ground.The grounding terminal is identified by the ground symbol shown below that is stamped into the outside box on the right side of the terminal block:

The minimum size of the copper grounding wire is 8 AWG (10 mm2).

WARNING: Risk of Fire
DO NOT bond system electrical negative to earth ground at the controller.

OPERATION

Power-Up

WARNING: Risk of Damage

Connecting the solar module to the battery connector will permanently damage the controller.

• Confirm that the solar and battery polarities are correctly connected to the controller.
• A battery must be connected to the controller before operating it. The controller will not operate only with solar input. Solar input can trigger the controller to start up when the battery is connected without pressing the button.
• Turn on battery disconnect switch first, and then turn on solar disconnect switch. If the solar module is in full sunlight, the controller will begin charging.
• The number of battery must be seted according to actual needs in the first uesd (in seting program 05).
  Otherwise, the controller can’t work properly and 25 warning occur.

Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the controller. It includes three indicators, four operation buttons and a LCD display, indicating the operating status and input/output power information.

LED Indicator

__

__

POWER ON

| __

Green

| __

Solid On

| PV Voltage is OK
Light off| PV Voltage is fault
__

__

CHARGING

| __

__

Green

| Solid On| Float stage
__

Flashing

| The controller is charging.

Bulk charge stage: flashing every 0.5 second Absorption stage: flashing every 0.5 second

Lithium battery wake-up: flashing every 0.3 seconds

__

WARNING/FAULT

| __

Red

| Solid On| Fault status
Flashing| Warning status: flashing every 0.5 second

Button Operation

LCD Display Icons

Battery Charging Status

Constant Current mode / Constant

Voltage

| 2 ~ 2.055V/cell| The down bar will be on and the other four bars will flash in turns.
2.055 ~ 2.11V/cell| The two down bars will be on and the other three bars will flash in turns.

2.11 ~2.167V/cell

| The three down bars will be on and the other two bars will flash in turns.
mode| > 2.167 V/cell| The four down bars will be on and the less bar will flash.
Floating mode| Batteries are fully charged.| 5 bars will be on.

LCD setting
After pressing and holding “ENTER” button for 3 seconds, the unit will enter setting mode. Press “UP” or “DOWN” button to select setting programs. And then, press “ENTER” button to confirm the selection or ESC button to exit.

Seting Programs

Reference Code

FAULT

| 01| Software detect over current fault
02| Hardware detect over current fault
03| Over temperature fault
04| Heatsink1 temperature-variable fault
05| Heatsink2 temperature-variable fault
06| Battery voltage is too high
07| Battery short
08| Battery current senser fault
09| Battery voltage senser fault
10| PV is high loss
11| IIC-eeprom fault
12| NTC disconnect
13| Software version and hardware version do not match

Warning

| 20| Output derating caused from high PV voltage
21| Output derating caused from high temperature
22| Fan1 failure
23| Fan2 failure
24| Fan3 failure
25| Need to set the number of batteries in program 05 based on the actual number of batteries

CHARGING LOGIC

1 3-stage Charging
In general, this solar charge controller is designed with 3-stage battery charging algorithm for fast, efficient, and safe battery charging. The following picture shows the sequence of charging stages.

1. Bulk charge stage
   In bulk charge stage, charge current begins to flow, typically at the maximum rate of the charge source. The controller will supply solar power to charge battery as much as possible.

2. Absorption stage
   When battery charging voltage is reached to Absorption voltage point, the charging stage changes from bulk charge to absorption. Constant-voltage regulation is used to maintain battery voltage at the absorption stage.
   If the charging current drops to one-tenth of the maximum charging current setting point, the charging status will change to float stage.
   If the elapsed time of absorption stage is over setting value for C-V charging time, it will also transfer to float stage.

3. Float Stage
   After the battery is fully charged in the absorption stage, the controller will reduces the battery voltage to the setting point of float voltage. Once in float stage, constant-voltage regulation is used to maintain battery voltage at setting point of float voltage.
   In lithium battery mode: the charging logic has no floating charge stage

Float timeout
If the battery voltage remains lower than the float voltage for 30minutes, the controller will return to bulk charging stage.

Float cancel voltage
Once the battery voltage drops to setting point of float cancel voltage, the controller also returns to bulk charging stage. Float cancel voltage = floating charging voltage – (1V x battery numbers in series)

Setting Parameter and Default Value

Recommended and default parameter settings are listed below.

Parameter| Battery type| Absorp. Stage| Float Stage| Absorp. Time
---|---|---|---|---
Unit| –| Volt| Volt| __

hours

Option| AGM| 14.4| 13.6| 2.5
Option| Flooded| 14.6| 13.8| 2.5
Default| Customized| –| –| 2.5
Option| LIb| –| –| –

TROUBLE SHOOTING

2.  If the problem remains, please contact your installer.

02| Hardware detect over current fault| 1.  Restart the controller.

2.  If the problem remains, please contact your installer.

03| Over temperature fault| 1.  Keep the controller in the cool environment.

2.  If the problem remains, please contact your installer.

__

04

| __

Heatsink1 temperature-variable fault

| 1.  Check whether the fans is turning, and whether the air inlet and outlet is blocked.

2.  Restart the controller.

3.  If the problem remains, please contact your installer.

__

05

| __

Heatsink2 temperature-variable fault

| 1.  Check whether the fans is turning, and whether the air inlet and outlet is blocked.

2.  Restart the controller.

3.  If the problem remains, please contact your installer.

__

06

| __

Battery voltage is too high

| 1.Check whether the rated output voltage of the battery is correct(Program 05), and then restart the controller . If the problem remains, please contact your installer.
__

07

| __

Battery short

| 1. Check the battery terminal and the output terminal of the controller to ensure that there is no short circuit, and then restart the controller.

2.  If the problem remains, please contact your installer.

08| Battery current senser fault| 1.  Restart the controller.

2.  If the problem remains, please contact your installer

09| Battery voltage senser fault| 1.  Restart the controller.

2.  If the problem remains, please contact your installer.

__

10

| __

PV is high loss

| 1.   Verify that the pv array is correctly configured and that the PV open- circuit voltage is within the specifications of the controller.

2.  If the problem remains, please contact your installer.

11| IIC-eeprom failure| 1.  Restart the controller.

2.  If the problem remains, please contact your installer.

__

12

| NTC disconnect| 1.  Restart the controller.

2.  If the problem remains, please contact your installer.

13| Software version and hardware version do not match| 1.  Restart the controller.

2.  If the problem remains, please contact your installer.

SPECIFICATIONS

Table 1 Electrical Specifications

Table 2 Battery Charging

Voltage 100%50% Current Time

Table 3 Mechanical and Environment

365250164MM

Product Weight (Kg)| 11.5KG
Ambient Temperature Range| 0℃ to +55℃
Storage Temperature| – 40℃ to 75℃
Humidity| 0%-90%RH(No condensing)
Enclosure| IP20(indoor&vented)

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