Maximo PV2024 HM User manual

maximo

USER’S MANUAL

SOLAR INVERTER

PV2024 HM &

PV3024 HM

Version 10/08/2018

Table Of Contents

ABOUT THIS MANUAL .....................................................................................................................................3

Purpose............................................................................................................................................................3

Scope...............................................................................................................................................................3

SAFETY INSTRUCTIONS..................................................................................................................................3

INTRODUCTION ...............................................................................................................................................4

Features...........................................................................................................................................................4

Basic System Architecture...............................................................................................................................4

Product Overview.............................................................................................................................................5

INSTALLATION...................................................................................................................................................6

Unpacking and Inspection................................................................................................................................6

Preparation ......................................................................................................................................................6

Mounting the Unit.............................................................................................................................................6

Battery Connection ..........................................................................................................................................7

AC Input/Output Connection............................................................................................................................9

PV Connection...............................................................................................................................................10

Final Assembly...............................................................................................................................................11

Commuication connection ............................................................................................................................. 11

Dry Contact Signal .........................................................................................................................................12

OPERATION .....................................................................................................................................................12

Power ON/OFF ..................................................................................................................................................

Operation and Display Panel.........................................................................................................................12

LCD Display Icons .........................................................................................................................................14

LCD setting ....................................................................................................................................................14

Fault Reference Code....................................................................................................................................19

Warning Indicator...........................................................................................................................................21

Operating State Description...........................................................................................................................21

Disply setting..................................................................................................................................................21

SPECIFICATIONS ...........................................................................................................................................24

Table 1 Line Mode Specifications ...................................................................................................................24

Table 2 Inverter Mode Specifications .............................................................................................................25

Table 3 Charge Mode Specifications ..............................................................................................................26

Table 4 General Specifications .......................................................................................................................27

TROUBLE SHOOTING.....................................................................................................................................28

Appendix: Approximate Back-up Time Table ...........................................................................................29

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 (4 pieces of 40A, 32VDC for 2KVA and 6 pieces of 40A, 32VDC for 3KVA) 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.

INTRODUCTION

This is a multi-function inverter/charger, combining functions of inverter, solar charger and battery charger to

offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable

and easy-accessible button operation such as battery charging current, AC/solar charger priority, and

acceptable input voltage based on different applications.

Features

Pure sine wave inverter

Configurable input voltage range for home appliances and personal computers via LCD setting

Configurable battery charging current based on applications via LCD setting

Configurable AC/Solar Charger priority via LCD setting

Compatible to mains voltage 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

IP20 rating, avoid direct sunlight

Basic System Architecture

The following illustration shows basic application for this inverter/charger. It also includes following devices to

have a complete running system:

Generator

PV modules (option)

Consult with your system integrator for other possible system architectures depending on your requirements.

This inverter can power all kinds of appliances in home or office environment, including motor-type appliances

such as tube light, fan, refrigerator and air conditioner.

Figure 1 Hybrid Power System

Product Overview

2-3KVA single model

NOTE: For parallel model installation and Operation,

please check separate parallel installation guide for

the details.

1. LCD display

2. Status indicator

3. Discharging/Charging indicator

4. Fault indicator

5. Function buttons

6. Power on/off switch

7. AC input

8. AC output

9. PV input

10. Battery input

11. Circuit breaker

12. RS-485 communication port

13. USB

15. Dry Contact

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:

The unit x 1

User manual x 1

Communication cable x 1

USB cable x 1

Software CD x 1

Preparation

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

Mounting the Unit

Consider the following points before selecting where to install:

⚫Do not mount the inverter on flammable construction

materials.

⚫Mount on a solid surface, indoor IP20, avoid direct sunlight

⚫Install this inverter 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. 200 mm to the side and approx. 300 mm 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.

⚫Be sure to keep other objects and surfaces as shown in the

below 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.

Install the unit by screwing three screws.

Battery Connection

CAUTION: To 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 beaker size.

WARNING! All wiring must be performed by a qualified person.

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

Ring Terminal

Torque

value

Cable mm2

Dimensions

D(mm)

L(mm)

2024

66A

100AH

1*6AWG

6.4

29.2

2~ 3 Nm

200AH

2*10AWG

6.4

23.8

2~ 3 Nm

3024

100A

100AH

1*4AWG

6.4

33.2

2~ 3 Nm

200AH

2*8AWG

6.4

29.2

2~ 3 Nm

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.

2. Connect all battery packs as below chart, It’s suggested to connect at least 100Ah capacity battery for

2KVA/3KVA model.

3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are

tightened with torque of 2-3 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.

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 substance on the terminals before terminals are

connected tightly.

CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure

DC (+) must be connected to DC (+) and DC (-) must be connected to DC (-).

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. The recommended spec of AC breaker is 20A

for 2KVA, 32A for 3KVA.

CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT-misconnect input

and output connectors.

WARNING! All wiring must be performed by 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

2024

14 AWG

0.8~ 1.0Nm

3024

12 AWG

1.2~ 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. 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.

4. Then, 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)

L→LINE (brown or black)

N→Neutral (blue)

5. Make sure the wires are securely connected.

CAUTION: Appliances such as air conditioner are required 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 trig overload fault and cut off output to protect your appliance but

sometimes it still causes internal damage to the air conditioner.

PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between

inverter and PV modules.

WARNING! All wiring must be performed by a qualified person.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV

module connection. To reduce risk of injury, please use the proper recommended cable size as below.

Model

Typical Amperage

Cable Size

Torque

2024/40A

3024/40A

40A

8 AWG

1.4~1.6Nm

2024/60A

3024/60A

60A

8 AWG

1.4~1.6Nm

PV Module Selection:

When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.

2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.

Solar Charging Mode

INVERTER MODEL

2024/40A

3024/40A

2024/60A

3024/60A

Max. PV Array Open Circuit Voltage

145Vdc

PV Array MPPT Voltage Range

30~130Vdc

Min. battery voltage for PV charge

17Vdc

Please follow below steps to implement PV module connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors

2. 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.

CAUTION: Important

Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause AC

short-circuit when these inverters are worked in parallel operation.

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