CMS 4000 Installation And Operation Manual

Download PDF User Manual

Full Text Searchable PDF User Manual

Grid PV Inverter

CMS 4000

CMS 5000

Installation and Operation Manual

Edition 2.0 2010/06

Before you start ......................................................................................................................... 3

Content .............................................................................................................................. 4

2. Installation ............................................................................................................................. 5

1) Safety instructions ............................................................................................................. 5

2) Fixed on the wall ............................................................................................................ 6

3) Connecting to the grid (AC utility) .................................................................................. 7

4) Connect to PV Panel (DC input)...................................................................................... 8

5) Checking ......................................................................................................................... 9

6) System Diagram ............................................................................................................. 9

3. Modes of operation ............................................................................................................. 10

Normal mode: .............................................................................................................. 10

Fault mode ................................................................................................................... 10

Shutdown mode ........................................................................................................... 10

4. Inverter Status ..................................................................................................................... 12

5. Communications .................................................................................................................. 12

Communications software instructions ....................................................................... 13

Monitor ........................................................................................................................ 13

Detailed information .................................................................................................... 13

6. Trouble shooting ................................................................................................................. 13

7. Specifications ....................................................................................................................... 15

Edition 2.0 2010/06

Before you start

Congratulations on choosing CMS Grid PV Inverter, the products from CMS Grid PV

Inverter are a highly reliable products due to their innovative design and perfect quality

control. Such inverters are used in high demand, grid-linked PV systems.

This manual contains important information regarding installation and safe operation of

this unit. Be sure to read this manual carefully before using.

If you encounter any problems during installation or operation of this unit, first check this

manual before contacting your local dealer or representative. Instructions inside this

manual will help you solve most installation and operation difficulties.

Edition 2.0 2010/06

1. Content

CMS 4000 and CMS 5000 Design Overview

Front View

Bottom View

Opening the package

After opening the package, please check the contents of the box. It should contain the

Operation LED

Solar panel input

RS232 RS485

LCD Display

Showing the inverters status

Utility (AC) connector

Edition 2.0 2010/06

following:

Item

Name

Quantity

CMS 4000 or CMS 5000

mounting frame

mounting screws

safety-lock screws

AC socket assembly

Instruction manual

Monitor

software(disk)

1 (

Optional

)

Before starting installation please consider the following items:

This unit is designed for outdoor usage

（

IP65

）

. Do not expose the PV-Inverter to direct

sunlight. Direct sunlight increases the internal temperature that may reduce conversion

efficiency.



Check the ambient temperature of installation is within specified range -20 ~ +55

℃



The AC grid voltage is between 190 and 260VAC, 50Hz.



Qualified personnel are performing the installation.



Adequate convection space surrounds the inverter.



Inverter is being installed away from explosive vapors.



No flammable items are near the inverter.

it is recommended that Inverter is installed where the ambient temperature is between

0~45

℃

2. Installation

1) Safety instructions

A. Do not remove the casing. Inverter contains no user serviceable parts. Refer

servicing to qualified service personnel.

B. Both AC and DC voltage sources are terminated inside the PV Inverter. Please

disconnect these circuits before servicing.

C. When a photovoltaic panel is exposed to light, it generates a DC voltage. When

Edition 2.0 2010/06

connected to this equipment, a photovoltaic panel will charge the DC link capacitors.

. Energy stored in this equipment’s DC link capacitors presents a risk of electric

shock. Even after the unit is disconnected from the grid and photovoltaic panels,

high voltages may still exist inside the PV-Inverter. Do not remove the casing until at

least 10 minutes after disconnecting all power sources.

E. This unit is designed to feed power to the public power grid (utility) only. Do not

connect this unit to an AC source or generator. Connecting Inverter to external

devices could result in serious damage to your equipment.

F. Carefully remove the unit from its packaging and inspect for external damage. If

you find any imperfections, please contact your local dealer.

G. Although designed to meet all safety requirements, some parts and surfaces of

Inverter are still hot during operation. To reduce the risk of injury, do not touch the

heat sink at the back of the PV-Inverter or nearby surfaces while Inverter is operating.

2) Fixed on the wall

A. Select a wall or solid vertical surface that can support the PV-Inverter.

B. Inverter requires adequate cooling space. Allow at least 20cm space above and

below the inverter.

C. Using the mounting frame as a template, drill 4 holes as illustrated in the

following figures.

Edition 2.0 2010/06

D. Fix the mounting frame as the figure shows. Do not make the screws to be flush

to the wall. Instead, leave 2 to 4mm exposed.

E. Hang the inverter on the mounting frame

F. Check the installation conditions

a) Do not install the PV-Inverter on a slanted surface

b) Check the upper straps of PV-Inverter and ensure it fits on to the bracket

c) Insert safety-lock screws to the bottom leg to secure the inverter.

d) Check the secure mounting of the PV-Inverter by trying to raise it from the bottom.

The PV-Inverter should remain firmly attached.

e) Select the installation location so that the status display can be easily viewed.

f) Choose a strong mounting wall to prevent vibrations while inverter is operating.

3) Connecting to the grid (AC utility)

A. Measure grid (utility) voltage and frequency. It should be 230VAC (or 220VAC) ,

50/60Hz and single phase.

B. Open the breaker or fuse between PV Inverter and utility.

C. For Inverter (CMS 4000 and CMS 5000 ), connect AC wires as follows:

Edition 2.0 2010/06



Insert utility wires through cable gland. Connect wires according to polarities

indicated on terminal block. L

→

LINE (brown or black), N

→

Neutral (blue)

and G

→

system ground (yellow-green).



Fasten the gland plate with attached screws.



Twist the gland so that the cable is firmly fixed.



Refer to left figure.



Insert Line wire to Pin L, Neutral wire to Pin N and Ground wire to Pin G.



Suggested cable width for AC wire

Model

Φ(mm)

Area(mm

)

AWG no.

CMS 4000

≥

3.2

≥

≤

CMS 5000

≥

4.0

≥

3.75

≤

4) Connect to PV Panel (DC input)

A. Make sure the maximum open circuit voltage (Voc) of each PV string is less than

550VDC UNDER ANY CONDITION.

Pin N

Pin L

Pin G

shell

Pressing

screw cap

AC wire

male insert With

coupling ring

Edition 2.0 2010/06

B. Use MC (Multi-contact) connectors for PV array terminals.

C. Connect the positive and negative terminals from the PV panel to positive (+)

terminals and negative (-) terminals on the PV-Inverter. Each DC terminal on Inverter

can withstand 20A

D. Before connecting PV panels to DC terminals, please make sure the polarity is

correct. Incorrect polarity connection could permanently damage the unit. Check

short-circuit current of the PV string. The total short-circuit current of the PV string

shou

ld be less than the inverter’s maximum DC current.

E. High voltages exist when the PV panel is exposed to the sun. To reduce risk of

electric shock, avoid touching live components and treat connection terminals

carefully.

5) Checking

A. When the PV panels are connected and their output voltage is greater than 100

VDC but the AC grid is not yet connected, the message on the LCD display produce

the following messages in order: “MODEL= XkW”-> “Waiting” -> “Disconnect Grid”.

The display repeats “Disconnect Grid” and the RED “fault LED” turns on.

B. Close the AC breaker or fuse between PV-Inverter and grid. The normal

operating sequence begins.

Under normal operating conditions the LCD displays “Pac =xxxx.xW”. That is the

power fed to the grid. The green LED turns lights-up.

D. This completes the check.

6) System Diagram

PV Panel:

Provide DC power to inverter

CMS:

Converts DC (Direct Current) power from PV panel(s) to AC (Alternating

PV panel

CMS

Connection
system

Utility

Edition 2.0 2010/06

Current) power. Because Inverter is grid-connected it controls the current amplitude

according to the PV Panel power supply. Inverter always tries to convert the

maximum power from your PV panel(s).

Connection system:

This “interface” between Utility and PV-Inverter may

consist of electrical breaker, fuse and connecting terminals. To comply with local

safety standards and codes, the connection system should be designed and

implemented by a qualified technician.

Utility:

Referred to as “grid” in this manual, is the way your electric power

company provides power to your place. Please note that Inverter can only connect

to low-voltage systems (namely, 230VAC, 50/60Hz).

3. Modes of operation

There are 3 different modes of operation.

Normal mode:

In this mode, Inverter works normally. Whenever the supplied power from PV panel

is sufficient (voltage>150VDC), Inverter converts power to the grid as generated by

the PV panel. If the power is insufficient, (voltage<120VDC) Inverter enters a

“waiting” state. Whilst “waiting” Inverter uses just enough power from the PV panel

monitor internal system status. In normal mode the green LED is on.

Fault mode

The internal intelligent controller can continuously monitor and adjust the system

status. If Inverter finds any unexpected conditions such as grid problems or

int

ernal failure, it will display the information on its LCD and light up the red “Fault”

LED.

Shutdown mode

During periods of little or no sunlight, Inverter automatically stops running. In this

mode, Inverter does not take any power from the grid. The dis

play and LED’s on

the front panel do not work.

Notes

Operating Inverter is quite easy. During normal operation, Inverter runs automatically.

However, to achieve maximum conversion efficiency of Inverter please read the following

Edition 2.0 2010/06

information:

a. Automatic ON-OFF: Inverter starts up automatically when DC-power from the PV

panel is sufficient. Once the PV-Inverter starts it enters one of the following 3 states:



Standby:

The PV string can only provide just enough voltage to minimum

requirements of the controller.



Waiting:

When the PV string DC voltage is greater than 100V, Inverter enters a

“waiting” state and attempts to connect to the grid.



Normal operation:

When PV string DC voltage is greater than 150V, Inverter

operates in the normal state.

b. Starting-up display sequence: Once the PV power is sufficient, Inverter displays

information as shown in the flow chart as follow:

“User: xxxx”

→

“Spec:xxxx”

→

“Model:x.xkW”

→

“SW Version :xx.xx”

→

“Checking xxS”

→

“Normal State”

→

“Pac= xxx.x W”.

LCD backlight control: To save power, the LCD display’s backlight automatically

turns off after 30 seconds.



LCD display

The first line of LCD

State

Display content

Remark

Wait State

Waiting

Initial waiting

Checking xxS

System checking

Reconnect in xxS

System checking

Standby

PV voltage low

Normal State

Pac = xxxx.x W

Inverter watt at working

Auto Test State

Auto testing

Protection auto test

Fault State

System xx Fault

System fault

Permanent State

Inverter xx Damaged

Inverter fault

Program State

Programing

Update software

The second line of LCD

Cycle display

Display time /s Remark

User: xxxx

The user type

Spec: xxxx

The inverter spec type

Model:x.xkW

The inverter model

SW Version:xx.xx

The software version

Etotal: xxxkWh

The energy total

Etoday: xx.xkWh

The energy today

Ttoday:xxhxxmin

The work time today

Edition 2.0 2010/06

4. Inverter Status

Inverter is designed to be user-friendly; therefore, the status of the Inverter can be easily

understood by reading the information shown on the front panel display. All possible

messages are shown in the following table.

Display

Operation

System Fault

Disconnect Grid

disconnect grid

Grid V Fault

grid voltage out range

Grid F Fault

grid frequency out range

Low Isolation

low input isolation

High PV Voltage

PV input voltage high

High Ground I

GFCI active

High Temperature

temperature too high

Inverter Fault

EEPROM Damaged

EEPROM has problem

Please Initiate

System has not been initiated at the first time

GFCI Damaged

GFCI device damaged

Sensor Damaged

Output DC sensor damaged

SCI Damaged

The communication between the two MCU fault

Not Consistent

The datas are not the same of the two MCU

High DC INJ

Output DC Injection Too High

Relay Damaged

Output Relay Failure

High Bus Voltage

DC Bus Voltage Is Too High

Auto test failed

2.5V Ref Fault

2.5V Reference Voltage Inside has problem

5. Communications

PV:xxxV BUS:xxxV

The PV and Bus voltage

AC:xxxV xx.xHz

The Grid voltage and frequency

Edition 2.0 2010/06

Communications software instructions

Connect PV Inverter and PC by RS232 wire. Open monitoring software

“PV Inverter

COM.exe”.If you use “PV Inverter COM.exe”, Open the “PV Inverter COM.txt” file in the

path :C:\WINDOWS. The file records the user's software and the main parameter settings,

click on the main interface and the "Setting" button, enter the password "szddz" into the

user settings interface, set the interface as follows based on actual field conditions.

Click the

“

Set

”

button and exit.

Monitor

After setting the software the user can monitoring the inverter. The right side of the main

interface is the detailed information of inverter.

Detailed information

Detailed setting method and other functions refer to "PV Inverter COM Manual." in

the CD.

6. Trouble shooting

In most situations, the Inverter requires very little service. However, if Inverter is not

able to work perfectly, please refer to the following instructions before calling your

Edition 2.0 2010/06

local dealer.



Should any problems arise, the red (Fault) LED on the front panel turns on and the

LCD displays the relevant information. Please refer to the following table for a list

of potential problems and their solutions.

System

Fault

Ground I

Fault

1. The ground current is too high.

2. Unplug the inputs from the PV generator and check the

peripheral AC system.

3. After the cause is cleared, re-plug the PV panel and check

PV-Inverter status.

4. If the problem persists please call service.

Grid Fault

1. Wait for 5 minutes, if the grid returns to normal, PV-Inverter

automatically restarts.

2. Make sure grid voltage and frequency meet the specifications

3. If the problem persists please call service.

Disconnect

Grid

1. Grid is not connected.

2. Check grid connection cables.

3. Check grid usability.

Inverter

Failure

PV over

Voltage

1. Check the open PV voltage, see if it is greater than or too close

to 550VDC.

2. If PV voltage is less than 550VDC, and the problem still occurs,

please call local service.

Consistent

Fault

1. Disconnect PV (+) or PV (-) from the input, restart the

PV-Inverter.

2. If it does not work, call service.



If there is no display on the panel, please check PV-input connections. If the

voltage is higher than 150V, call your local service.



During periods of little or no sunlight, the PV-Inverter may continuously start up

and shut down. This is due to insufficient power generated to operate the control

circuits.

Edition 2.0 2010/06

7. Specifications

Model

Specifications

CMS 4000

CMS 5000

Input data

Max. DC power

4500W

5200W

Max. DC voltage

550V

PV voltage range MPPT

110V-530V

Max. input current

18A

20A

DC voltage ripple

<5%

Max. number of strings

Ground fault monitoring

yes

Reverse polarity protection

short-circuit diode

Output data

Max. AC power

4400W

5000W

Nominal AC output

4000W

5000W

THD of AC current

<3%

Nominal AC voltage

230V

Nominal AC frequency

50Hz

Power factor

Short-circuit proofing

yes

Efficiency

Max. efficiency

98.00%

Euro ETA

97.50%

Protection rating

IP/65

Mechanical

Width/height/depth(mm)

457/368/195

Weight

20.7KG

Ask a Question ?

PDF User Manual

5000.0

Full Text Searchable PDF User Manual