Fronius 25F, 50F Operating Instructions Manual

Download

Page 1

25F/50F Energy cell

Operating Instructions

/ Battery Charging Systems / Welding Technology / Solar Electronics

Energy cell

42,0410,1562 006-11022013

Page 2

Page 3

ud_fr_st_et_00493 01/2012

Dear Reader

Thank you for choosing Fronius - and congratulations on your new, technically highgrade Fronius product! This instruction manual will help you get to know your new machine. Read the manual carefully and you will soon be familiar with all the many great features of your new Fronius product. This really is the best way to get the most out of all the advantages that your machine has to offer.

Please also take special note of the safety rules - and observe them! In this way, you will help to ensure more safety at your product location. And of course, if you treat your product carefully, this definitely helps to prolong its enduring quality and reliability - things which are both essential prerequisites for getting outstanding results.

Introduction

Page 4

Page 5

Safety rules

DANGER!

WARNING!

CAUTION!

„NOTE!“ indicates a risk of flawed results and possible damage to the

equipment.

NOTE!

The device is manufactured using state-of-the-art technology and according to recognised safety standards. If used incorrectly or misused, however, it can cause

- injury or death to the operator or a third party,

- damage to the device and other material assets belonging to the operator,

- inefficient operation of the device.

All persons involved in commissioning, operating, maintaining and servicing the device must

- be suitably qualified,

- have knowledge of and experience in dealing with gas installations electrical installations batteries

- read and follow these operating instructions carefully.

The operating instructions must always be at hand wherever the device is being used. In addition to the operating instructions, generally applicable and local regulations regarding accident prevention and environmental protection must be made available and observed.

General remarks

Important!

„WARNING!“ indicates a possibly dangerous situation. Death or serious

injury may result if appropriate precautions are not taken.

„CAUTION!“ indicates a situation where damage or injury could occur. If it is not avoided, minor injury and/or damage to property may result.

„Important!“ highlights tips for correct operation and other particularly useful information. It does not indicate a potentially damaging or dangerous situation.

If you see any of the symbols depicted in the „Safety rules“, special care is required.

„DANGER!“ indicates immediate and real danger. If it is not avoided, death or serious injury will result.

Page 6

The device is to be used exclusively for its intended purpose.

Utilisation for any other purpose, or in any other manner, shall be deemed to be „not in accordance with the intended purpose“. The manufacturer shall not be liable for any damage resulting from such improper use.

Utilisation in accordance with the „intended purpose“ also comprises

- that the device is undamaged and in perfect condition

- carefully reading and obeying all the instructions in these operating instructions, especially the safety rules and all safety and danger notices

- setting up and installing according to the operating instructions

- performing all stipulated inspection and servicing work

- observing all advice from the manufacturer regarding gas supply components

- observing all advice from the battery manufacturer

- obeying other relevant national safety rules

The device may not be used if any part has been submerged in or flooded with water. Notify the manufacturer or his representative immediately so that the device can be checked and any affected parts replaced.

Utilisation in accordance with „intended purpose“

All safety and danger notices on the device

- must be kept in a legible state

- must not be damaged/marked

- must not be removed

- must not be covered, pasted or painted over.

For the location of the safety and danger notices on the device, refer to the section headed „General remarks“ in the operating instructions for the device.

Before switching on the device, remove any faults that could compromise safety.

Your personal safety is at stake!

General remarks

(continued)

CAUTION! Operating the device in frost or wet conditions can result in damage. The device may only be used in a frost-free, dry environment.

Safety measures at the installation location

When installing devices with openings for cooling air, ensure that the cooling air can enter and exit unhindered through the air ducts. Only operate the device in accordance with the degree of protection shown on the rating plate. Refer to the „Setup regulations“ chapter in the device operating instructions

Page 7

III

Operation or storage of the device outside the stipulated environmental conditions will be deemed to be not in accordance with the intended purpose. The manufacturer shall not be liable for any damage resulting from such improper use.

For exact information on permitted environmental conditions, please refer to the „Technical data“ chapter.

The ambient air must be clean and free from

- potential sources of ignition

- smoke

- open flames and fire

- flammable materials

- petrol and other combustible liquids or vapours

- dust

- acids

- corrosive gases or substances

Height above sea level: up to 2000 m (6500 ft)

Environmental conditions

Safe use The operating instructions are primarily aimed at system integrators who

use the energy cells as components in a larger system. The contents are therefore intended for qualified personnel. An electric shock can be fatal. Do not perform any actions other than those described in the documentation.

All cables and leads must be complete, undamaged, insulated and adequately dimensioned. Loose connections, scorched, damaged or inadequately dimensioned cables and leads must be immediately repaired by authorised personnel.

Leaks in the hydrogen supply can lead to fire or explosions. The hydrogen supply must be set up according to the relevant standards and connection plan in the „Commissioning“ chapter. Maintenance and repair work on the hydrogen supply must be carried out according to the relevant standards and national regulations. The technical data shown on the rating plate applies.

Maintenance and repair work on the device may only be carried out by manufacturer-authorised personnel.

It is impossible to guarantee that bought-in parts are designed and manufactured to suit their application, or that they satisfy safety requirements. Use only original replacement parts (also applies to standard parts).

Do not carry out any modifications, alterations, etc. without the manufacturer’s consent.

Components that are not in perfect condition must be replaced immediately.

Page 8

The fuel is supplied in the form of gaseous hydrogen. Hydrogen is a dangerous substance, which requires great care when handling. Further information on handling hydrogen can be found in the EU RL 91/155 EEC and 93/ 112 EU safety data sheets.

Only use the device in well ventilated areas to prevent the accumulation of explosive gas. Spaces are not deemed to be at risk of explosion if a concentration of hydrogen of less than 4 % can be guaranteed by the use of natural or forced ventilation.

Connect suitable hydrogen ventilation lines to the screw connections provided as described in the „Commissioning“ section and run them into the open air to dissipate the excess hydrogen in the event of overpressure in the hydrogen supply.

The unit should be set up so that it is independent of the surrounding air. This means that the reaction and cooling air is supplied from the atmosphere and the outgoing air from the reaction chamber and cooling system is dissipated into the atmosphere.

If such a setup is not possible, operating the device to use ambient air is only permitted:

- if protective grilles are fitted to the housing openings for the inlet and outlet cooling air (factory setting)

- if there is sufficient ventilation

- in rooms with a volume of more than 130 m³

Danger from gases, hazardous materials and suffocation

Keep all people, especially children, away from the unit and its accessories. If, however, there are people in the vicinity,

- make them aware of all the dangers associated with the back-up battery (risk of a build-up of explosive acids and gasses that are detrimental to the health, possible risk of suffocation due to lack of oxygen in the air, danger from output current, etc.)

- provide suitable protective equipment.

Before leaving the work area, ensure that no-one and nothing can come to any harm in your absence.

Protecting yourself and others

CAUTION! Danger of suffocation when the unit is operated in

areas with inadequate ventilation (uses up the oxygen). Ensure an adequate supply of fresh air.

Using the device in spaces with inadequate ventilation can cause suffocation with no visible or otherwise detectable warning. The cause of this is the oxygen consumption of the device, which can lead to a lack of oxygen in the room if it is inadequately ventilated. Setting up the device to take in and expel air into the atmosphere rather than the room helps prevent this. For more information on this, see the chapter entitled „Commissioning“.

Page 9

Care must be taken during installation to ensure that no electromagnetic interference occurs in electrical and electronic devices.

EMC measures

Electrical installations

Electrical installations must only be set up set up to the relevant national and local standards and regulations.

Only operate the device when all protection devices are fully functional. If the protection devices are not fully functional, there is a risk of

- injury or death to the operator or a third party,

- damage to the device and other material assets belonging to the opera-

tor,

- inefficient operation of the device.

Any safety equipment that is not in full working order must be repaired by the manufacturer before the unit is switched on.

Never bypass or disable protection devices.

Before switching on the device, ensure that no one is likely to be endangered.

The procedure for turning the device on and off safely is described in chapter entitled „Operation“ in the device operating instructions.

- Make sure that the installation location has an adequate incoming and outgoing air supply, or operate the unit in an environment that is not dependent on the surrounding air

- Ensure that the cooling air can enter and exit the unit unhindered

- Always fix hydrogen cylinders in place securely and fit a protective cap before transporting

- Refer to the „Care, maintenance and disposal“ chapter in the unit’s operating instructions

- Regularly check the unit and its accessories for obvious damage and proper functioning of safety equipment

- Never run the unit if there is any evidence of damage

- Only operate the unit with the degree of protection shown on the rating plate

Safety measures in normal mode

Page 10

Batteries contain acid which is harmful to the eyes and skin. During charging, gases and vapours are released that can harm health and are highly explosive in certain circumstances.

Battery acid must not get into the eyes or onto the skin or clothes. Wear protective goggles and suitable protective clothing. Rinse any acid splashes with copious amounts of clean water, seek medical advice if necessary.

Danger from batteries

On no account inhale any of the gases and vapours released

To prevent short circuits, do not place any tools or conductive metals on the battery

General information regarding the handling of batteries

- Follow the manufacturer’s advice

- Observe the manufacturer’s safety regulations during installation, operation, maintenance and repair

- Equip batteries with the correct fuse in order to avoid damage to people or property

- Protect batteries from dirt and mechanical damage.

- Perform a regular visual inspection to ensure that the acid (electrolyte) level in the battery is at the Max. mark.

- If any of the following occurs, do not start the device (or stop immediately if already in use) and have the battery checked by an authorised workshop:

- uneven acid levels and/or high water consumption in individual cells

caused by a possible fault.

- heating of the battery over 55 °C (131 °F).

Keep hands, hair, clothing and tools away from moving parts, for example fans.

The cover of the electrical connection compartment may only be removed by trained personnel. All other covers and housing in general may only be opened/removed by trained manufacturer’s personnel. Unauthorised opening or manipulation of the device will invalidate the guarantee and holds the risk of serious damage to people and property.

The moist outgoing air from the reaction chamber can reach a temperature of up to 70 °C (158 °F), which can scald.

Specific areas of risk

Page 11

VII

If the device is equipped with pressure tanks with hydrogen, all safety regulations for pressure tanks should be observed.

Pressure tanks contain gas under pressure and can explode if damaged. They must therefore be handled with great care.

Protect the pressure tank from excessive heat, mechanical impact, naked flames, sparks and arcs.

Mount the pressure tank vertically and secure according to instructions to prevent it falling over.

Keep pressure tank away from electrical circuits.

Always use suitable pressure vessels that are approved for the application along with suitable, approved accessories (regulator, hoses and fitting). All pressure vessels and accessories used must be in perfect condition.

If the device remains out of operation for a long period, close the valve of the pressure tank.

If the pressure tank is not connected, leave the cap on the pressure tank valve.

The manufacturer’s instructions must be observed as well as applicable national and international regulations for pressure tanks and accessories.

Danger from pressure tanks

The duration of the guarantee for the device depends on the supply contract. However, the manufacturer will not accept any liability if the damage was caused by one or more of the following:

- Use of the device „not in accordance with the intended purpose“

- Improper installation and operation

- Operating the device with faulty protective equipment

- Non-compliance with the operating instructions

- Unauthorised modifications to the device

- Catastrophes caused by foreign objects and force majeure

Warranty and liability

A safety inspection must be carried out by a qualified expert

- before using for the first time

- after any changes are made

- after additional parts are installed or after any conversions

- after repair, care and maintenance has been carried out

- at least every twelve months.

Carrying out a safety inspection

Page 12

VIII

The user is responsible for the safekeeping of any changes made to the factory settings. The manufacturer accepts no liability for any deleted personal settings.

Data protection

Devices with the CE marking satisfy the essential requirements of the Machinery and EMC Directives. (Further details can be found in the appendix or the chapter entitled „Technical data“ in your documentation).

Safety symbols

Do not dispose of this device with normal domestic waste! To comply with the European Directive 2002/96/EC on Waste Electrical and Electronic Equipment and its implementation as national law, electrical equipment that has reached the end of its life must be collected separately and returned to an approved recycling facility. Any device that you no longer require must be returned to your dealer, or find out about the approved collection and recycling facilities in your area. Ignoring this European Directive may have potentially adverse affects on the environment and your health!

Disposal

The device has been tested at the manufacturer’s voluntary request by TÜV SÜD for compliance with the requirements of EN 62282-5-1 and has received the marks of conformity for product safety.

Marks of conformity

The operator is required to carry out a safety inspection of the unit at least once every 12 months, and to have the safety elements on the unit function tested, including calibration of the sensors. The entire system must be checked in accordance with the applicable national regulations.

Follow the appropriate national and international standards and directives when checking the safety of the entire system.

Maintenance, technical inspections and checks must only be carried out by qualified personnel (service organisations) who have been trained in the safety and maintenance of these devices. In addition, all repair and maintenance work must be performed exclusively using original replacement parts. All changes to the device and the use of parts that are not original replacement parts may only be made with the approval of the manufacturer.

If these conditions are not met, the manufacturer cannot guarantee the safety of the device. Starting up the device without having performed safety-related maintenance work is done at your own risk.

The manufacturer therefore accepts no liability for damage caused by inadequate maintenance carried out by a third party or by the non-performance of maintenance.

Carrying out a safety inspection

(continued)

Page 13

The text and illustrations are all technically correct at the time of going to print. Right to effect modifications is reserved. The contents of the operating instructions shall not provide the basis for any claims whatsoever on the part of the purchaser. If you have any suggestions for improvement, or can point out any mistakes that you have found in the operating instructions, we will be most grateful for your comments.

Page 14

Page 15

Contents

General .......................................................................................................................................................... 3

Functionality and device concept .............................................................................................................. 3

Advantages ............................................................................................................................................... 3

Features .................................................................................................................................................... 3

Inputs and outputs..................................................................................................................................... 4

Warning notices on the device .................................................................................................................. 4

Control elements and connections ................................................................................................................. 6

Safety ........................................................................................................................................................ 6

Housing front panel ................................................................................................................................... 6

Housing rear panel - overview of process connections ............................................................................. 8

Layout of process connections................................................................................................................ 10

Before commissioning ...................................................................................................................................11

Safety .......................................................................................................................................................11

Proper use ............................................................................................................................................... 11

Setup regulations .....................................................................................................................................11

Connections ............................................................................................................................................ 12

Before using for the first time .................................................................................................................. 12

Commissioning............................................................................................................................................. 13

Safety ...................................................................................................................................................... 13

Advance information ............................................................................................................................... 13

Preparation for installation....................................................................................................................... 13

Wiring terminals for DC power and earthing (X0).................................................................................... 14

Wiring terminals for safety-related inputs and outputs (X2).....................................................................15

Wiring up terminals for inputs and outputs .............................................................................................. 16

Wiring the service interface ..................................................................................................................... 18

Setup independent of surrounding air ..................................................................................................... 19

Setup dependent on surrounding air ....................................................................................................... 20

Connecting the hydrogen supply............................................................................................................. 21

Connecting the hydrogen vent lines ........................................................................................................ 21

Connecting the reaction condensate outlet pipe ..................................................................................... 22

Connecting the reaction chamber outgoing pipe ..................................................................................... 23

Installation examples for automatic mode ............................................................................................... 23

Installation example for battery current > 85 A ........................................................................................ 24

Installation example with a charging current limit .................................................................................... 25

Operation ..................................................................................................................................................... 26

Safety ...................................................................................................................................................... 26

Operating conditions ............................................................................................................................... 26

Switching the energy cell to standby ....................................................................................................... 26

Manual mode .......................................................................................................................................... 27

Manual mode: starting the energy cell .................................................................................................... 27

Manual mode: switching off the energy cell ............................................................................................ 27

Automatic mode ...................................................................................................................................... 27

Automatic mode: starting the energy cell ................................................................................................ 27

Automatic mode: switching off the energy cell ........................................................................................ 28

Charging characteristic for the connected battery ................................................................................... 28

Display ......................................................................................................................................................... 29

The display .............................................................................................................................................. 29

System display ........................................................................................................................................ 29

Favourites display ................................................................................................................................... 29

System control ........................................................................................................................................ 29

Tank indicator .......................................................................................................................................... 29

Battery display......................................................................................................................................... 30

Service .................................................................................................................................................... 30

Warnings ................................................................................................................................................. 30

Keypad .................................................................................................................................................... 31

Navigation ............................................................................................................................................... 31

Error list ................................................................................................................................................... 32

Page 16

Error display ............................................................................................................................................ 32

Overview ................................................................................................................................................. 33

Detailed description of the System display.............................................................................................. 34

Detailed description of the Favourites display ......................................................................................... 35

Displaying measured values ................................................................................................................... 36

Configuration ........................................................................................................................................... 36

Changing the favourites .......................................................................................................................... 37

Configuration of the tank indicator........................................................................................................... 37

Configuration of external analogue sensor inputs ................................................................................... 39

Overview and explanation of available measured values ....................................................................... 40

Measured values for the H2 tank ............................................................................................................ 40

Measured values for the energy cell ....................................................................................................... 40

Measured values for the battery.............................................................................................................. 43

Troubleshooting ........................................................................................................................................... 44

General ................................................................................................................................................... 44

Energy cell fault diagnosis ...................................................................................................................... 44

Displayed service codes ......................................................................................................................... 45

Care, maintenance and disposal .................................................................................................................. 47

General ................................................................................................................................................... 47

Once a year / every 1000 operating hours .............................................................................................. 47

Annual safety inspection ......................................................................................................................... 47

Every 1500 operating hours .................................................................................................................... 48

Maintenance work every 1000 operating hours ...................................................................................... 48

Disposal .................................................................................................................................................. 48

Technical data .............................................................................................................................................. 49

Fronius Energy Cell 25F ......................................................................................................................... 49

Fronius Energy Cell 50F ......................................................................................................................... 51

Fronius Worldwide

Page 17

Features

- Fuel cell-based generator PEM type (polymer electrolyte membrane)

- Easy to use

- High standard of safety due to explosion protection integrated into the device

- High degree of efficiency

- Quiet, low-maintenance operation

- Interface for data communication

General

Functionality and device concept

The energy cell generates electrical energy from hydrogen and oxygen in the surrounding air according to the fuel cell principle. The electrochemical unit in the device consists of several individual cells connected in series. A digital control unit supplies it with hydrogen and air in the appropriate ratio and maintains the operating temperature.

When used correctly, hydrogen is a safe source of energy. The energy cell has a range of safety features that comply with all applicable standards. The explosion protection requirements are covered by precautionary measures integrated into the device to the extent that no further explosion protection measures are required at the installation location.

Fig. 1 Energy cell

Water is the only combustion product of the energy cell, which means that it does not produce any pollutants. Another advantage of the cell is that it is quiet and requires practically no maintenance. In contrast to conventional generators, the energy cell electrochemically converts the chemically-bound energy of the hydrogen directly into electrical power. The hydrogen consumption is therefore very low.

Hydrogen is an ideal energy source that effectively stores solar energy over the long term and makes it available 24/7, 365 days a year. This means, for example, that a mains-independent photovoltaic system no longer has to be designed to take account of peak winter requirements. In this way, the energy cell can be used as the basis for setting up a cost-optimised and reliable stand-alone supply.

In view of the dwindling energy resources and the need for environmentally-friendly energy sourcing, the energy cell sets the bar for energy efficiency and zero emissions.

Benefits

Page 18

Fig. 2 Inputs and outputs, data communication

The energy cell is fitted with safety symbols and a rating plate. The safety symbols and rating plate must not be removed or painted over.

Fig. 3a Rating plate and safety symbols on the reaction chamber outgoing pipe

CAUTION! Danger of burns from hot outgoing pipe (1) and risk of scalding from hot, moist reaction chamber outgoing air. This can reach temperatures of up to 70 °C (158 °F). During operation:

- do not touch the outgoing pipe (1)

- keep away from the reaction chamber outgoing air

(1)

Inputs and outputs

Warning notices on the device

HOT SURFACE !

WARNING

Optionen:

48 V

82 A

4000 W

FRONIUS Energiezelle 50F

4.220.021

100 A

+3°C...+40°C

+38°F...+104°F

Hydrogen Quality 5.0

5 to 13,6 bar

3,3 Nm³/h

Ambient temperature

Pressure

Flow rate

Fuel type

www.fronius.com

Type

Ser.No.

EN 62282-5-1/EN 61000-6-2/EN 61000-6-3

IP20

Art.No.

BATT max.

el. nom.

UDC

nom.

Cooling air

Electrical output Energy cell 25F: 24 V DC, 2 kW Energy cell 50F: 48 V DC, 4 kW

Battery / primary supply for standby and start Energy cell 25F: 24 V Energy cell 50F: 48 V

External Emergency Stop

Digital inputs and outputs

Analogue inputs

Service interface

USB-B

RS485

Hydrogen 5.0

Reaction chamber outgoing air

Reaction condensate (deionised water, non-potable)

Cooling air outlet

Combustion air

(3.0 available on request)

Page 19

Warning notices on the device

(continued)

Fig. 3b Safety symbol on the protective grille

WARNING! Inadequate ventilation increases the risk of fire, explosion and suffocation. The device should be set up so that it is independent of the surrounding air. This means that the combustion and cooling air is supplied from the atmosphere and the outgoing air from the reaction chamber and cooling system is dissipated into the atmosphere. If the device cannot be set up so that it is independent of the surrounding air, it may only be operated by taking in air from the room if:

- protective grilles (1) are fitted on the housing openings for the cooling air supply and outlet (factory setting)

- there is sufficient ventilation

- it is used in rooms with a volume of more than 130 m³

- the outgoing air from the reaction chamber is dissipated into the atmosphere to avoid oxygen depletion in the surrounding air

(1)

NOTE! The illustration shows only one protective grille. Both grilles are required for operation independent of the surrounding air. See the „Commissioning“ section for more information on setting up the device independently of the surrounding air.

WARNING

Do not operate the device without protective covering!

Page 20

Housing front panel

No. Function

(1) Emergency Stop

Immediately interrupts the power generation in an emergency. When the energy cell is integrated into a system, the Emergency Stop button is to be removed from the device by a Fronius-trained service engineer.

(2) USB-B interface

For reading operating data using the software tool (available from the manufacturer)

(3) Keylock switch

For switching the energy cell on and off manually

(4) Display

Instructions for the user. Also displays relevant operating data.

(5) Keypad

For navigating around the display

(6) Terminals X2 for safety-related

inputs and outputs

(7) Terminals X3 and X4 for inputs and

outputs

Control elements and connections

WARNING! Incorrect operation may result in serious injury or damage. Do

not use the functions described here until you have thoroughly read and understood the following documents:

- these operating Instructions

- all the operating instructions for the system peripherals (gas supply, battery, etc.), especially the safety rules

NOTE! After firmware updates, you may find that your device has certain functions that are not described in these operating instructions. Individual illustrations may also differ slightly from the actual controls on your device, but these controls function in exactly the same way. If you have any further questions, please contact the manufacturer.

In the rest of these instructions, the device is shown with the cover over the electrical connection compartment removed.

WARNING! Work carried out incorrectly and electric shocks can have fatal results.

- The cover over the electrical connection compartment must only be removed by a trained technician

- Before removing the cover, make sure that you have thoroughly read and understood the safety instructions in the “Commissioning” section.

Safety

(6) (7)

(8)

Fig. 4 Housing front panel

(4)(3)(2)(1)

(5)

(9)

(10)

(11)

Page 21

(8) Terminals X0 for DC power and earthing

Electrical output power Energy cell 25F: 24 V, 2 kW Energy cell 50F: 48 V, 4 kW

(9) Strain relief device

For securing the connected cables

(10) Plug connections for CAN X3 interface

For reading operating data; for integration into the entire system, contact the manufacturer first

(11) Plug connections for Modbus interface RS485

For reading device-specific data

Housing front panel

(continued)

Page 22

Housing rear panel - overview of process connections

No. Function

(1) Cooling air inlet and outlet

Suitable for connecting ducts (6) and (7) for drawing in and dissipating cooling air from outside the installation location

(2) Screw connection for hydrogen supply

1/4 in. NPT with internal thread

(3) Screw connections for hydrogen vent lines

For connecting vent lines, so that excess hydrogen is safely dissipated into the atmosphere in the event of overpressure in the hydrogen supply 1/4 in. NPT with internal thread, supply pressure protection and stack protection

(4) Locking ring connection for the reaction condensate outlet pipe

Swagelok 6 mm (0.24 in.) Hexagonal, width across flats 14 mm (0.55 in.)

(1)

(6) (7)

(2)

(3)

(4)

(5)

Fig. 6 Non-electrical connections and cooling air ducts

IMPORTANT! The ducts (6) and (7) for supplying and removing cooling air (1) are not part of the scope of supply and should be designed to suit the conditions at the installation location and as described in the „Commissioning“ section.

Page 23

No. Function

(5) Attachment for the reaction chamber outgoing pipe

The outgoing air and backflushed air from the reaction chamber are dissipated into the atmosphere. Hydrogen sensors and a level monitor for the backflushing air ensure safe operation. These measures are known as the device-internal or primary explosion protection. DN 50 (1.97 in.)

(6) Duct for removing cooling air

(7) Duct for supplying cooling air

Housing rear panel - overview of process connections

(continued)

Page 24

Fig. 7 Layout of the non-electrical connections and housing dimensions

475 mm, 18.7 in.

403.75 mm, 15.9 in.

297.75 mm, 11.72 in.

214.75 mm, 8.45 in.

156.75 mm

6.17 in.

12 mm

.47 in.

185 mm

7.28 in.

185 mm

7.28 in.

19 mm

.75 in.

22 mm, .87 in.

637 mm, 25.08 in.

426 mm, 16.77 in.

155 mm

6.1 in.

30 mm

1.18 in.

Layout of the process connections

330.25 mm, 13 in.

128 mm

5.04 in.

622.5 mm, 24.51 in.

870 mm, 34.25 in.

912.5 mm, 35.93 in.

Page 25

WARNING! Incorrect operation may result in serious injury or damage. Do not use the functions described here until you have thoroughly read and understood the following documents:

- these operating Instructions

- all the operating instructions for the system components, especially the safety rules

The device is designed exclusively for generating electrical energy from gaseous hydrogen with oxygen from the air in stationary applications.

Any use above and beyond this purpose is deemed improper. The manufacturer shall not be held liable for any damage arising from such usage.

Proper use also includes:

- carefully reading and following all the instructions given in the operating instructions

- carrying out all the specified inspection and maintenance work

WARNING! If one of these devices falls or topples over, it could cause serious or even fatal injury. Place devices on a solid, level surface, so that they remain stable. Please also see „Environmental conditions“ in the „Safety rules“ section.

The device must only be set up and operated in a suitable dry, enclosed space with adequate ventilation. The manufacturer accepts no liability for any damage caused due to use in an unsuitable space.

To operate without problems, the device must be set up horizontally. Connected consumers and components (outlet pipes or vent lines, etc.) should be protected against voltage surges (lightning, etc.). Connect the energy cell to the existing earth conductor as described in the „Commissioning“ section or to the existing reference potential as part of the equipotential bonding.

The device is not suitable for use on mobile platforms or in situations where the installation location is subject to vibration.

The entire system must conform to the applicable national requirements for setting up electrical and gas systems. All signal lines should be shielded.

Before commissioning

Safety

Proper use

Setup regulations

Page 26

The device is designed for the hydrogen supply and output voltages indicated on the rating plate. The hydrogen supply must be provided as described in „Installation example“ in the „Commissioning“ section. If there are no connections, lines or valves attached to your device, fit these components so that they conform to the relevant national standards. The setup examples are merely recommendations and do not necessarily comply with national standards.

It must be possible to shut off the hydrogen supply line in the immediate vicinity of the device.

WARNING! Leaks in the hydrogen supply can lead to fire or explosions. The hydrogen supply must be configured according to the applicable standards and the „Technical data“ section. The technical data shown on the rating plate applies.

CAUTION! Inadequately dimensioned installations and consumers can cause serious damage. Consumers connected to the device must conform to the output voltages of the device. The technical data shown on the rating plate applies.

1. Check the hydrogen cylinder, lines, connections, valves, plug connections and cables for damage and leaks

2. Check that there are no obstructions to the following flows:

- Cooling air inlet and outlet

- Reaction chamber outgoing air

- Hydrogen ventilation

- Hydrogen supply

- Reaction condensate outlet

NOTE! Air inlet and outlet openings and the condensate outlet on the device must never be covered, not even partially.

Connections

Before using for the first time

Page 27

Commissioning

WARNING! An electric shock can be fatal. If the device is connected to the

battery during installation, there is a risk of serious injury and damage. Work may only be carried out in the electrical connection compartment while the cover is open if:

- the keylock switch is in the „O“ position

- the device is disconnected from the battery

WARNING! Leaks in the hydrogen supply can lead to fire or explosions. The hydrogen supply must be configured according to the applicable standards and the „Commissioning“ section. The technical data shown on the rating plate applies.

WARNING! Work carried out incorrectly and electric shocks can have fatal results.

- The cover over the electrical connection compartment must only be removed by a trained technician

- All other covers and housing should generally only be opened/removed by the manufacturer’s trained technicians.

- Unauthorised opening or manipulation of the device will invalidate the warranty and create the risk of serious injury or damage.

Safety

Advance information

Not all of the following wiring tasks will be needed for basic operation of the energy cell. The following connections should only be wired if they are needed for the relevant additional functions:

- Terminals for safety-related inputs and outputs (X2)

- Terminals for inputs and outputs

- CAN interface

Detailed information on use of the connections can be found under “Installation example”. The “Operation” section contains specific wiring instructions for use in automatic mode.

Preparation for installation

Before installation, on all cables that are fitted to terminal X0 or the 9-pin plugs:

Cable ends

1. Strip the cable ends

2. Attach ferrules

Page 28

* For external sensors: establish an earth connection for the cable shields using one

of the two C-rails to fix the strain relief devices.

Energy cell 25F X0 Pin Description U I

max

1 Housing / earthing - 2 DC+ battery 24 V DC 100 A 3 DC- battery - 100 A 4 DC+ consumer 24 V DC 100 A 5 DC- consumer - 100 A 6 Housing / earthing - -

Energy cell 50F X0 Pin Description U I

max

1 Housing / earthing - 2 DC+ battery 48 V DC 100 A 3 DC- battery - 100 A 4 DC+ consumer 48 V DC 100 A 5 DC- consumer - 100 A 6 Housing / earthing - -

Fig. 8 Connecting cables for DC power and earthing

Wiring terminals for DC power and earthing (X0)

- Maximum cable cross-section: 35 mm² (0.0543 in.²)

- Recommended tightening torque for terminal screws (1): 4,5 Nm

1. Insert the cable ends with ferrules into the terminals

2. Secure cables using terminal screws (1)

(1)

4,5 Nm

System earth resistance < 1 Ohm

Page 29

Wiring terminals for safety-related inputs and outputs (X2)

- Maximum cable cross-section: 2.5 mm² (0.00388 in.²)

- Recommended tightening torque for terminal screws (1): 0.6 Nm

1. Insert the cable ends with ferrules into the terminals of the 9-pin plug X2

2. Secure cables using terminal screws (1)

3. Plug 9-pin plug into 9-pin base

Fig. 9 Connecting cables for safety-related inputs and outputs

X2 - External Standby Pin Description U 25 F / 50 F I

max

25 F / 50 F 3 Relay: contact 13 20 - 30 V DC / 45 - 60 V DC 2 A / 0.4 A 4 Relay: contact 14 20 - 30 V DC / 45 - 60 V DC -

X2 - Alarm output Pin Description U I

max

1 Standby: + 10 - 30 V DC 2 Standby: - 10 - 30 V DC -

The X2 alarm output is part of the safety-related inputs and outputs. This output is only active in the event of a safety-related fault.

X2 - External Emergency Stop Pin Description - -

5 Emergency Stop: contact 21 -

6 Emergency Stop: contact 22 -

Note regarding the external Emergency Stop: If required, a Fronius-trained service engineer can remove the Emergency Stop button and integrate pins 5 and 6 into an Emergency Stop circuit on the system side. If the external Emergency Stop is not used, bypass pins 5 and 6 by jumpering them accordingly.

X2 - unassigned Pin Description U I

max

7NC - 8NC - 9NC - -

9-pin base X2

(1)

0.6 Nm

11213141516

9-pin plug X2

Page 30

Wiring terminals for inputs and outputs

Fig. 10 Connecting cables for inputs and outputs

- Maximum cable cross-section: 2.5 mm² (0.00388 in.²)

- Recommended tightening torque for terminal screws (1): 0.6 Nm

1. Insert the cable ends with ferrules into the terminals of the 9-pin plugs X3 and X4

2. Secure cables using terminal screws (1)

3. Plug the 9-pin plugs into 9-pin bases

X3 - Sensor supply Pin Description - I

max

1 + 24 V - 315 mA 2 GND - -

X3 - Tank valve 1 Pin Description U 25 F / 50 F I

max

3 Tank valve 1: contact 13 20 - 30 V / 45 - 60 V 2 A / 0.4 A 4 Tank valve 1: contact 14 20 - 30 V / 45 - 60 V 2 A / 0.4 A

X3 - Tank valve 2 Pin Description U 25 F / 50 F I

max

5 Tank valve 2: contact 13 20 - 30 V / 45 - 60 V 2 A / 0.4 A 6 Tank valve 2: contact 14 20 - 30 V / 45 - 60 V 2 A / 0.4 A

X3 - Relay Pin Description U 25 F / 50 F I

max

7 Relay: contact 13 20 - 30 V / 45 - 60 V 2 A / 0.4 A 8 Relay: contact 14 20 - 30 V / 45 - 60 V 2 A / 0.4 A

9-pin base X3

(1)

0.6 Nm

11213141516171819

9-pin plug X3

(1)

0.6 Nm

11213141516171819

9-pin base X4

9-pin plug X4

Page 31

Wiring terminals for inputs and outputs

(continued)

X3 - Potential-free input Pin Description U I

max

9 Digital input 0: + 10 - 30 V DC 7 mA

X4 - Potential-free input Pin Description U I

max

1 Digital input 0: - 10 - 30 V DC 7 mA 2 Digital input 1: + 10 - 30 V DC 7 mA 3 Digital input 1: - 10 - 30 V DC 7 mA 4 Run (system start): + 10 - 30 V DC 7 mA 5 Run (system start): - 10 - 30 V DC 7 mA

X4 - Sensor supply Pin Description - I

max

6 + 5 V - 125 mA

X4 - Analogue input Pin Description U r

7 AI0 0 - 5 V DC 20 kOhm 8 AI1 0 - 5 V DC 20 kOhm 9 AI2 0 - 5 V DC 20 kOhm

Page 32

Wiring terminals for Modbus interface RS485

Fig.10a Connecting cables for inputs and outputs

Important! The Modbus interface RS485 is designed for reading device-specific data and only is intended for Fronius trained staff. The two additional RJ45-plugs (1) for the Modbus interface RS485 are not included.

Specifications for the 5-pin plug connection X5:

- Maximum cable cross section: 1,5 mm² (AWG28)

- Recommended tightening torque for terminal screws (2): 0.2 Nm

1. Insert the cable ends with ferrules into the terminals of the 5-pin plug X5

2. Secure cables using terminal screws (2)

3. Plug the 5-pin plug into 5-pin base

5-pin base X5

(2)

0.2 Nm

112131415

5-pin plug X5

RJ45 - X7

7654321

(1)

RJ45 - X6

7654321

(1)

5-pin plug X5 Pin Description

1 GND 2 RX + 3 RX 4 TX + 5 TX -

RJ45 plug X6 Pin Description

1 GND 2NC 3 X7 - Pin 3 4 TX +

Pin Description

5 TX 6 X7 - Pin 6 7NC 8 GND

Page 33

Wiring the service interface

IMPORTANT! The service interface (1) and the contents of this section are intended for

Fronius-trained service technicians only. The plug for the service interface is not part of the scope of supply. A RJ45 plug connector is required.

RJ45 - X13

7654321

(1)

Fig. 11 Connecting the CAN interface

RJ45 plug connector X13 Pin Description - I

max

1 7 V DC - 500 mA 2 GND - 3 High - 4 R Terminate - 5 R Terminate - 6 Low - 7 GND - 8NC - -

RJ45 plug X6 Pin Description

1 GND 2NC 3 X6 - Pin 3 4 RX +

Wiring terminals for Modbus interface RS485

(continued)

Pin Description

5 RX 6 X6 - Pin 6 7NC 8 GND

Page 34

IMPORTANT! The housing openings (3) each have four predrilled holes for M5 screws for the installation of the cooling air ducts (1) and (2) that are to be produced.

The following illustration shows the arrangement of the predrilled holes.

1. Remove the protective grilles over the housing openings (3) before fitting the

cooling air ducts (1) and (2)

2. Use M5 screws to fit suitable cooling air ducts (1) and (2) to the housing openings

(3) for supplying and removing the cooling air

Setup independent of surrounding air

Duct for removing cooling air (2) 185 x 425 mm, 7.28 x 16.73 in.

Duct for supplying cooling air (1) 185 x 425 mm, 7.28 x 16.73 in.

Fig. 12 Fitting the ducts for removing and supplying cooling air

(3)

WARNING! Inadequate ventilation increases the risk of fire, explosion and suffocation. Make sure that the installation location is adequately ventilated, despite the exchange of air with the outside.

The device should ideally be set up, so that it is independent of the surrounding air. This means that the combustion and cooling air is supplied from the atmosphere, and the outgoing air from the reaction chamber and cooling system is dissipated into the atmosphere.

Information about how to connect a suitable pipe for the outgoing air from the reaction chamber to the appropriate connection (4) can be found in the „Connecting the reaction chamber outgoing pipe“ section.

A duct (1) is required for supplying cooling air / combustion air from outside the installation location. The duct (2) is also required to extract the heated cooling air. The cooling air ducts (1) and (2) should be designed as follows:

- To suit the conditions at the installation location

- With the dimensions shown on the side with the housing openings (3) in the illustra-

tion

- For a volumetric flow of

700 Nm³/h (25000 cfh) - energy cell 25F 1400 Nm³/h (50000 cfh) - energy cell 50F

(4)

Page 35

Fig. 13 Arrangement of the predrilled holes for cooling air ducts

22 mm

0.87 in.

165 mm

6.5 in.

165 mm

6.5 in.

50 mm

1.97 in.

446 mm, 17.56 in.145 mm

5.71 in.

Setup independent of surrounding air

(continued)

Setup dependent on the surrounding air

WARNING! Inadequate ventilation increases the risk of fire, explosion and

suffocation. The device should be set up so that it is independent of the surrounding air. This means that the combustion and cooling air is supplied from the atmosphere and that the outgoing air from the reaction chamber and cooling system is dissipated into the atmosphere. If the device cannot be set up so that it is independent of the surrounding air, it may only be operated by taking in air from the room if:

- protective grilles are fitted to the housing openings for the inlet and outlet cooling air (factory setting)

- there is sufficient ventilation

- it is used in rooms with a volume of more than 130 m³

- the outgoing air from the reaction chamber is dissipated into the atmosphere to avoid oxygen depletion in the surrounding air

DN 50 (1.97 in.)

Page 36

1. Screw the hydrogen hose firmly to its counterpart on the screw connection (1); make sure that there are no leaks

IMPORTANT! The screwed connections (1) for the hydrogen vent lines have a diameter of 1/4 in. NPT with internal thread. The ventilation lines must have a mating counterpart and meet the following requirements:

- Fire and corrosion resistant (e.g. stainless steel)

- There must be no leaks from the screwed joint with the counterpart

- Pressure loss from the line: max. 5 mbar (0.0725 psi.)

- Pressure: PN 13.6 (bar), (197.18 psi.)

- Volumetric flow: max. 10 Nm³/h (357.14 cfh)

- Length: max. 10 m (32 ft. 9.7 in.)

- Diameter: DN15, (0.59 in.)

Fig. 14 Connecting the hydrogen hose

(1)

IMPORTANT! The screwed connection (1) for the hydrogen supply has a diameter of 1/ 4 in. NPT with internal thread. The ventilation line must have a mating counterpart and meet the following requirements:

- There must be no leaks from the screwed joint with the counterpart

- Hydrogen supply pressure 5 to 13.6 bar (72.49 - 197.18 psi.)

- Hydrogen volumetric flow 1.7 Nm³/h (60.71 cfh) - energy cell 25F

- Hydrogen volumetric flow 3.3 Nm³/h (117.86 cfh) - energy cell 50F

Connecting the hydrogen supply

Connecting the hydrogen ventilation lines

WARNING! Incorrectly routed hydrogen ventilation lines increase the risk of

fire, explosion and suffocation. During and after assembly, the hydrogen ventilation lines must meet the following requirements:

- Observe the relevant national regulations when configuring the hydrogen ventilation lines

- The hydrogen ventilation lines must be routed into the open air

- There must be no sources of ignition or fire loads in an area 3 m around the outlet (cone) of the hydrogen ventilation lines

- Ensure that the hydrogen ventilation lines are unobstructed and facilitate the unhindered flow of gas

- The pressure at the outlets of the hydrogen ventilation lines must be equal to the ambient pressure (approx. 1 bar abs. - 14.5 psi.)

Page 37

Connecting the reaction condensate outlet pipe

IMPORTANT! The reaction condensate outlet pipe must meet the following require-

ments:

- Stainless steel version (VE-water-resistant)

- Diameter 6 mm (.24 in.)

- Volumetric flow up to 2 l/h (.53 gal/h) - energy cell 25F

- Volumetric flow up to 3 l/h (.79 gal/h) - energy cell 50F

1. Insert the reaction condensate outlet pipe (1) into the locking ring (2)

2. Tighten the locking ring (2) - hexagonal, width across flats 14 mm (0.55 in.)

- First tighten by hand

- Then use a hexagon spanner to tighten a further 1 1/4 turns.

Fig. 16 Connecting the outlet pipe

(2)

(1)

Fig. 15 Connecting the ventilation lines

(1)

1. Screw the ventilation lines firmly to their counterparts on the screw connections (1); make sure that there are no leaks

Connecting the hydrogen ventilation lines

(continued)

Page 38

Installation examples for automatic mode

The specific installation examples in the following two cases apply to automatic mode and must comply with the applicable national standards. See the „Operation“ section for more information about automatic and manual mode.

Connecting the reaction chamber outgoing pipe

IMPORTANT! The reaction chamber outgoing pipe must meet the following require-

ments:

- Max. volumetric flow 65 Nm³/h (2.321 cfh)

- Pressure loss from the line: max. 0.7 mbar (10.15 psi.)

- DN50 (1.97 in.)

- Made from plastic

- Slide-on sleeve DN50 (1.97 in.) as for waste water pipes

- Running with a downward gradient - directed away from the device - to prevent condensate collecting in the reaction chamber outgoing line and within the device

Fig. 17 Connecting the outgoing pipe

(1)

WARNING! A covered hydrogen sensor increases the risk of fire, explosion and suffocation. The following conditions must be fulfilled during and after assembly of the reaction chamber outgoing pipe:

- The reaction chamber outgoing pipe must only be pushed onto the attachment.

- A reaction chamber outgoing pipe must not be inserted into the attachment.

- The reaction chamber outgoing pipe must not be exposed to mechanical stresses. Stresses due to twisting, in particular, should be avoided.

NOTE! There is a risk of damaging the sensors in the reaction chamber outgoing pipe. Be particularly careful when fixing the reaction chamber outgoing pipe.

1. Fix the reaction chamber outgoing pipe to the attachment (1) To do this, slide the slide-on sleeve for the reaction chamber outgoing pipe onto the attachment (1)

Page 39

Installation example for battery current > 85 A

Where batteries for an electrical load greater than 85 A are being used, the consumer must be connected in parallel with them.

Deviations in the case of energy cell 50F:

- The 5 - 10 kOhm pre-resistors indicated thus * are required

- The battery voltage is 48 V instead of 24 V

WARNING! An inadequate or missing fuse protection for the batteries or improper handling of batteries can cause dangerous situations and result in serious injuries and damage. The power cable for the energy cell is to be protected by a 100 A fuse at the point where it connects to the battery. The applicable national and international regulations regarding the safe installation of batteries and the information provided by the battery manufacturer must be observed.

Fig. 18a Installation example

Explosion zone

Reaction condensate

Hydrogen store (Ex zone 2) for example a wall in F90 or protected zone

Hydrogen overpressure valves

Explosion zone

Reaction chamber outgoing air

Cooling air outlet

Cooling air / combustion air

External emergency stop

Alarm indicator lamp

External standby

100 A

Battery

Energy cell (not an explosion zone)

P ... Pressure sensor T ... Temperature sensor

External start

Relay

CAN

System earth resistance < 1 Ohm

X3 X4

Consumer

The stopcock for the hydrogen supply is a prerequisite for the leaktesting of the device.

Hydrogen supply

Page 40

Installation example with a charging current limit

The charging current must be limited in situations where low-capacity batteries are being used in order to protect them. The consumer must be connected to the dedicated load connections „load“ on terminals X0.

Deviations in the case of energy cell 50F:

- The 5 - 10 kOhm pre-resistors indicated thus * are required

- The battery voltage is 48 V instead of 24 V

Explosion zone

Reaction condensate

Hydrogen store (Ex zone 2) for example a wall in F90 or protected zone

Hydrogen overpressure valves

Explosion zone

Reaction chamber outgoing air

Cooling air outlet

Cooling air / combustion air

External emergency stop

Alarm indicator lamp

External standby

100 A

Battery

Energy cell (not an explosion zone)

P ... Pressure sensor T ... Temperature sensor

External start

Relay

CAN

System earth resistance < 1 Ohm

X3 X4

Consumer

The stopcock for the hydrogen supply is a prerequisite for the leaktesting of the device.

Fig. 18b Installation example

Hydrogen supply

Page 41

WARNING! Incorrect operation may result in serious injury or damage. Do not use the functions described here until you have thoroughly read and understood the following documents:

- these operating Instructions

- all the operating instructions for the system components, especially the safety rules

NOTE! Danger of damage to the device. The permitted ambient temperature range is +3 °C to +40 °C (37.4 °F to 104 °F).

1. Turn the keylock switch to the - I - position

„FRONIUS Energy Cell“ appears on the display

The energy cell runs a safety test and the display reads „Standby“.

The system display then appears.

IMPORTANT! The overview can be customised using a number of measured values that can be selected for and arranged in the overview as required. For more detailed information, see the „Set-up menu“ section.

This device is designed to be used in a frost-free environment within a temperature range of + 3 °C to + 40 °C (37.4 °F bis 104 °F).

If the device is started up at a temperature of less than 20 °C (68 °F), the nominal output will not be available until the required process temperature is reached.

If the device is operated at high ambient temperatures, or with inadequate heat dissipation, derating occurs in order to prevent an overload.

The device may only be operated for a maximum of 30 minutes in a temperature range of 35 °C to 40 °C (95 °F bis 104 °F). Technical factors may cause the energy cell to switch at higher temperatures despite the derating feature. Premature degradation of the device can also occur following operation at very high temperatures.

Operation

Safety

Operating conditions

Switching the energy cell to standby

Page 42

When the end-of-charging voltage set at the factory is reached for the connected battery, the energy cell starts to idle. The energy cell is switched off manually by turning the keylock switch to the - O - position as described under „Manual mode: switching off the energy cell“.

1. In Standby mode, briefly turn the keylock switch to the - Start - position and release The keylock switch returns to the - I - position

The energy cell runs through a test phase. The display reads „Starting“, together with the current status of the system test or the subsequent startup phase.

When the test phase is completed successfully, the display reads „Startup Complete“.

To switch off the energy cell manually

1. Turn the keylock switch to the - O - position

The energy cell is completely switched off when the keylock switch has been turned to the - O - position.

Once the energy cell has been completely switched off, it is in the „safe state“. In this state, there is no power to any of the valves controlled by the energy cell.

The electrical connection to the connected battery is also disconnected.

Manual mode: starting the energy cell

Manual mode

Manual mode: switching off the energy cell

When the connected battery reaches a critical charge level, a higher-level control unit sends a start signal to the energy cell as described in the „Starting the energy cell automatic mode“ section. The energy cell then starts automatically. Once the final charging voltage set at the factory for the connected battery has been reached, the higher-level control unit cancels the start signal (X2), causing the device to start to run down.

Automatic mode

1. For the energy cell to remain switched on there must be a voltage of 10

- 30 V applied at pins 1 and 2 of the safety-related input X2 - External standby.

Maximum cross-section of voltage signal cable: 2.5 mm² (0.00388 in.²)

IMPORTANT! The recommended tightening torque for the locking screws in the plug is 0.6 Nm.

IMPORTANT! The energy cell can be started with a voltage signal of 10 - 30 V on pins 4 and 5 of input X4. The required voltage signal must be preset by a higher-level control unit. The keylock switch no longer works in this automatic mode. The energy cell must also not already be on Standby for the start process, which means that it can also be operated out of the safe state.

Automatic mode: starting the energy cell

Fig. 19 Action at safety-related input X2

10 - 30 V

9-pin plug X2

1 2

0.6 Nm

Page 43

Automatic mode: switching off the energy cell

The energy cell is completely switched off after an automatic switch-off or when the keylock switch has been turned to the - O - position.

Once the energy cell has been completely switched off, it is in the „safe state“. This means that all valves for the hydrogen supply that can be activated by the energy cell are closed.

The electrical connection to the connected battery is also disconnected.

To allow fully automatic operation, a start can be triggered with an external start signal on pins 4 and 5 of input X4, even in the safe state and even if the keylock switch is in the - O - position.

„1“: In phase 1, the charging current

remains at a constantly high level to ensure that charging is as fast as possible.

„2“: In phase 2, the ability of the batteries

to absorb energy decreases. The charging current is reduced before outgassing starts at the edges of the electrode plates. The charging voltage remains constant. Now even the lower layers of the electrode plates are gradually converted.

1. 2.

I, U

Fig. 21 Charging characteristic

The charging characteristic set at the factory for the connected battery supports all important battery types, such as lead acid or gel system.

Charging characteristic for the connected battery

Automatic mode: starting the energy cell

(continued)

2. Apply a voltage of 10 - 30 V to pin 4 and pin 5 of input X4 - Run (System start)

Maximum cross-section of voltage signal cable: 2.5 mm² (0.00388 in.²)

IMPORTANT! The recommended tightening torque for the locking screws in the plug is 0.6 Nm.

Fig. 20 Action at input X22

10 - 30 V

9-pin plug X4

4 5

0.6 Nm

Page 44

Display

The display

- is for information and documentation only, and is not used to set the energy cell

- enables the energy cell to be started from standby

- allows the energy cell to return to standby from the operating state

The display

shows

- system status

- battery voltage

- tank pressure, if the tank indicator and analogue sensor inputs are configured and a suitable sensor is connected. You will find detailed information in the „Configuring the tank indicator“ and „Configuring external sensor inputs“ sections.

- warning messages

The system display

shows the symbols for setting and calling up measured values for

- tank indicator

- the energy cell

- battery display

SystemControl

displays the tank pressure if the tank indicator and analogue sensor inputs are configured and a suitable sensor is connected

- tank pressure (bar)

- tank temperature (°C)

- calculated quantity of energy in the stored hydrogen (kWh)

Tank indicator

shows

- four user-defined measured values at the same time

- warning messages

Favourites display

You will find detailed information about configuring the tank indicator and the external analogue sensor inputs in the „Configuring the tank indicator“ and „Configuring external sensor inputs“ sections.

Page 45

If the energy cell is started after a due service date has elapsed, a message to the effect that servicing is due is displayed briefly at regular intervals. This message appears for around 5 seconds at intervals of approximately 30 seconds.

Service

Warning symbols may appear in the system and favourite displays. These are explained below:

- „Pred“ The system output was reduced for reasons of temperature - cold start or overtemperature

- „Pmax“ The maximum system output was reached

Warnings

- „Perm Test“ Permeation test is in progress. This is an automatic test to determine whether the hydrogen permeability of the membrane conforms to the specifications.

-„H2-Sensor“ This indicates that a function test of the hydrogen sensor is imminent. The warning appears from 200 operating hours before the function test is due. If the deadline for the function test of the hydrogen sensor has passed, the warning symbol indicates that the function test was not carried out on time.

This shows the following for the start and back-up battery

- battery voltage (V)

- output current of the energy cell (A)

Battery display

WARNING! Starting up the device without having performed safety-related

maintenance work is done at your own risk. The manufacturer accepts no liability for damage caused by inadequate maintenance or the non-performance of maintenance.

WARNING! Starting the device with an H2 sensor that was not replaced as scheduled can cause serious injury or damage and is done at your own risk. The manufacturer accepts no liability for damage caused by the use of an H

sensor with more than 1500 operating hours.

Page 46

The start screen appears when the energy cell starts up.

Navigation

It then changes automatically to the system display.

Switch to other menus, e.g. the Favourites display:

1. Use keys „left“, „right“ or „scroll“ to select a button, symbol or setting

2. Press the „OK“ key to confirm

Return to the previous menu:

1. Hold down the „OK“ key (1 second)

If there is an „EXIT“ button, then this is another way to return to the previous menu:

1. Select the “EXIT” button

2. Press the „OK“ key to confirm

Legend:

- Press the „OK“ key

- Hold down the „OK“ key

- automatic

- „Service“ This indicates that servicing is nearly due. The warning appears from 1 month before the service date. If the service was missed, the warning symbol signals that the service interval was exceeded.

Warnings

(continued)

Tastenfeld

Press keys „left“, „right“ and „scroll“ to

- select buttons, symbols and settings

- change values

Note: The „EXIT“ button can often be used as an alternative for leaving a menu option.

left right scroll OK

Press the „OK“ key

- to confirm a selection

Hold down the „OK“ key (1 s)

- to exit a menu option

- to return to the higher menu level

Note: The „EXIT“ button can often be used as an alternative for leaving a menu option.

Page 47

In the event of a serious error, the energy cell switches to standby.

- The error display shows the current error code.

There is an overview of the error codes in the „Error diagnostics and troubleshooting“ section.

In the event of an error, the energy cell generates an error code. There is an overview of the error codes in the „Error diagnostics and troubleshooting“ section. Every new error code is added to a list of errors.

The error list can be accessed using the „ALARM“ button in the Favourites display. The „ALARM“ button does not appear until the error list contains at least one error.

The error list can contain up to 10 errors. If another error occurs, the oldest error is deleted.

Open error list:

1. Select „ALARM“ button

2. Press the „OK“ key to confirm

To open lower-level displays:

1. Select the relevant entry

2. Press the „OK“ key to confirm

The following are displayed, sometimes in lower-level displays:

- error codes with item numbers within the error list

- the time at which each error code occurred

- a display window that opens for every listed error code with details about the error concerned

The “CLEAR” button is used to clear the entire error list.

Legend:

- Press the “OK” key

- Hold down the „OK“ key

Error list

Error display

Page 48

Overview

Start

System status

displays

System peripheral

displays

Press the „OK“ key

Hold down the „OK“ key

automatic

Page 49

Detailed explanation of the system display

Buttons:

- „Fav“ Switches to the Favourites display

- „START“ Starts the energy cell if it is in standby

- „STOP“ Returns the energy cell to standby if it is in the operating state

Warning symbols: An explanation of the warning symbols can be found in the „Warnings“ section.

- “Pred”

- „Pmax“

- „Perm Test“

-„H2-Sensor“

- „Service“

Displays:

- System status, e.g.: „RUN“ Displays the current operating status: „Standby“, „Startup“, „RUN“ (operation), „Shutdown“ (returns to Standby)

- „Ubat“ battery voltage Voltage of the starting and back-up battery

- „PTank“ - Tank pressure If the tank indicator and analogue sensor inputs are configured and a suitable sensor is connected. You will find detailed information in the „Configuring the tank indicator“ and „Configuring external sensor inputs“ sections.

Page 50

Detailed description of the Favourites display

Buttons:

- „SETUP“ Used to access the menu for calling and configuring the measured values

- „ALARM“ Used to open the alarm list. The „ALARM“ button only appears if at least one error code is stored.

Warning symbols: An explanation of the warning symbols can be found in the „Warnings“ section.

- „Pred“

- „Pmax“

- „Perm Test“

-„H2-Sensor“

- „Service“

Favourites:

- Individual selection and arrangement of four measured values as described in the “Changing the favourites” section, e.g. “Ucmin to TCin”.

If no individual selection is made, the display contains the values as shown in the illustration above.

A detailed explanation of the display values can be found in the “Overview and explanation of the available measured values” section.

Page 51

To call up any measured value:

1. Select the „SETUP“ button from the Favourites display

2. Press the „OK“ key to confirm

At the end of the „Display“ section there is an overview and explanation of the available measured values.

3. Select the required symbol, e.g. „H2/=“ for the energy cell.

4. Press the „OK“ key to confirm

5. Select the required symbol, e.g. „COOLSYS“ for the cooling system temperatures.

6. Press the „OK“ key to confirm

7. Select the required display value, e.g. „TAout“ for the temperature of the process outgoing air in °C.

The following changes to the display are possible:

- Changing the Favourites display: Overview with an individual selection and arrangement of 4 measured values from all the available measured values

- Configuration of the external analogue sensor inputs: Setting the display format (number of decimal places) and unit for the sensor measured values

- Configuration of tank indicator: Used to set the tank volume, maximum tank pressure and sensor signals for correctly displaying the store of hydrogen

Displaying measured values

Configuration

Page 52

Configuration of the tank indicator

To do this,

1. Select the „SETUP“ button from the Favourites display

The following input values appear:

- „Size“ ... Total volume of all H2 tanks (L)

- “p-max” ... maximum filling pressure of the H2 tanks

(bar)

2. Select the symbol for the H2 tank

3. Press the „OK“ key to confirm

Changing the favourites

1. See the „Displaying measured values“ section, e.g. „TAout“, for how to navigate to the required value

2. When you have selected the value, press the „OK“ key

To select and arrange the values for the Favourites display:

The window for arranging the Favourites display opens

3. Use the „scroll“ key to determine the position of the selected value

4. Press the „OK“ key to save this arrangement

5. Select the „EXIT“ button

6. To select and arrange other values, continue as described for „TAout“.

You will need to specify the following in order to correctly display the remaining hydrogen level:

- Total volume of all H2 tanks (L)

- Maximum filling pressure of the H2 tanks (bar)

A display appears. This currently contains the entries „NC“ and „NA“. However, if the tank display and analogue sensor inputs are configured and suitable sensors are connected, as described below, the following tankspecific measured values will be listed:

- current filling pressure

- current tank temperature

- calculated energy content of the current fill level

4. Press the “OK” key

Page 53

5. Select the desired setting, e.g.: „Size“ for the tank

size (L)

6. Press the „OK“ key to confirm

7. Use the „left“ / „right“ keys to move the cursor to the

first position to be changed

8. Use the „scroll“ key to change the value of that

position

The tank pressure „p-Input“ (bar) and the temperature of the tank „T-Input“ (°C) can be detected via the external analogue sensor inputs AI0 and AI1. Configuration of the external analogue sensor inputs is described in the next section.

The „NC“ entries for the „p-Input“ and „T-Input“ settings mean that the corresponding sensor inputs are not yet selected.

Configuration of the tank indicator

(continued)

9. Use the „left“ / „right“ keys to move the cursor to the

next position and continue as described above until the entire input value has been changed

10. Press the „OK“ key to confirm

11. Repeat as appropriate for the „p-max“ setting (maximum tank pressure)

12. To configure external analogue sensor inputs, see the next section „Configuring external analogue sensor inputs“

13. Select the „p-Input“ setting

14. Press the „OK“ key to confirm

15. Use the „scroll“ key to select the required sensor input for the tank pressure, e.g. „AI0“

16. Press the „OK“ key to confirm

17. Repeat as appropriate for the „T-Input“ setting, e.g. with sensor input „AI1“

Save the current setting:

18. Hold down the “OK” key (1 second)

Page 54

Configuring external analogue sensor inputs

1. Select the „SETUP“ button from the Favourites display

2. Press the „OK“ key to confirm

It is possible to set the display value and unit separately for each unit in order to correctly display the external analogue sensor inputs. Depending on the setting, it may be necessary to connect a suitable sensor to the corresponding analogue input.

3. Select the energy cell symbol

4. Press the „OK“ key to confirm

5. Select the „EXT-AI“ symbol

6. Press the „OK“ key to confirm

7. Use the „scroll“ key to select the required analogue input, e.g. „AI0“

9. Use the „right“ key to move the cursor to the position for the display value

10. Use the „scroll“ key to set the decimal point

11. Use the „right“ key to move the cursor to the position for the unit (e.g. „°C“)

12. Change the unit, if necessary, using the „scroll“ key

13. Press the „OK“ key to confirm

14. Select the „EXIT“ button

15. Set the other analogue inputs in the same way as required.

Page 55

The symbols for the relevant energy cell components appear.

The following symbols are available:

- „SYS-CTRL“ ... System control

- “COOLSYS” ... Cooling system temperatures

- “DC- / DC” ... DC / DC converter

- “EXT-AI” ... External analogue sensor inputs

3. Select the required symbol

4. Press the „OK“ key to confirm

Measured values can be called up for the following system components:

1. Hydrogen tank

2. Energy cell

3. Battery

1. Select the symbol for the H2 tank

2. Press the „OK“ key to confirm

All the other information can be found in the „Configuring the tank display“ section.

To display the view shown above:

- Select the „SETUP“ button from the Favourites display

- Press the „OK“ key to confirm

1. Select the symbol for the energy cell

2. Press the „OK“ key to confirm

The measured values for the individual symbols are explained below:

Overview and explanation of the available measured values

Measured values for the H2 tank

Measured values for the energy cell

Page 56

„SYS-CTRL“ ... System controlMeasured values

for the energy cell

(continued)

pIn: Hydrogen supply pressure (bar)

cond: Conductibility of the cooling fluid (micro-Siemens)

Umin1 Specifies the cell with the lowest voltage (mV)

Umi1# Number of the cell with the lowest voltage

State System status

Start Number of starts already carried out

Operating Hours Number of operating hours

Page 57

„COOLSYS“ ... Cooling system temperaturesMeasured values

for the energy cell

(continued)

„DC- / DC“ ... DC / DC converter

TCin: Cooling fluid incoming temperature (°C)

TCout: Cooling fluid return temperature (°C)

TAout: Temperature of the process outgoing air (°C)

Ubat: Battery voltage (V)

Iout: Output current of the energy cell (A)

UStk: Stack voltage (V)

IStk: Stack output current (A)

Page 58

„EXT-AI“ ... External analogue sensor inputs

You will find detailed information in the „Configuring external analogue sensor inputs“ section.

Measured values for the energy cell

(continued)

Measured values for the battery

The following measured values are displayed for the start and back-up batteries:

- Battery voltage (V)

- Output current of the energy cell (A)

1. Select the symbol for the battery

2. Press the „OK“ key to confirm

Page 59

WARNING! An electric shock can be fatal. Before opening the device:

- Turn the keylock switch to the „O“ position

- disconnect the unit from the connected battery

- put up an easy-to-understand warning sign to stop anybody inadvertently switching it back on again

- using a suitable measuring instrument, ensure that electrically charged components (e.g. capacitors) have been discharged

CAUTION! An insufficient PE conductor connection may result in serious injury or damage. The housing screws provide a suitable PE conductor connection for earthing the housing and must NOT be replaced by any other screws that do not provide a reliable PE conductor connection.

Contact: Fronius International GmbH 4600 Wels-Thalheim, Günter-Fronius-Straße 1, Austria E-mail: energycell@fronius.com http://www.fronius.com

The unit has no function

Cause: Battery not connected or connected incorrectly Remedy: Check the contacts and cables, and check that polarity of the

charged battery is correct

Cause: No hydrogen supply, inadequate hydrogen supply pressure Remedy: Establish a hydrogen supply with sufficient pressure

Troubleshooting

General

Energy cell fault diagnostics

WARNING! Work carried out incorrectly and electric shocks can have fatal

results.

- The cover over the electrical connection compartment must only be removed by a trained technician

- All other covers and housing should generally only be opened/removed by the manufacturer’s trained technicians.

- Unauthorised opening or manipulation of the unit will invalidate the warranty and create the risk of serious injury or damage.

Page 60

If an error message that is not listed below appears on the display, the fault can only be rectified by a service engineer. Make a note of the error message shown on the display, and of the serial number and configuration of the unit, and contact the manufacturer, giving a detailed description of the error.

Contact: Fronius International GmbH 4600 Wels-Thalheim, Günter-Fronius-Straße 1, Austria E-mail: energycell@fronius.com http://www.fronius.com

10010 | E-stop

Cause: External emergency stop was triggered The circuit for the external

emergency stop was connected at X2, pins 5 and 6

Remedy: Eliminate the cause of the emergency stop and then acknowledge

the External emergency stop: Break the circuit at X2, pins 5 and 6 and restart the energy cell / cannot be remedied: Contact AfterSales Service

15010 | BLDC

Cause: Compressor fault Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

15020 | U-Stack min

Cause: Stack fault - undervoltage Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

15030 | Battery

Cause: Battery fault - undervoltage Remedy: Charge battery / reduce the load

15040 | Ucellmin

Cause: Individual cell voltage too low Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

15050 | Ext AI Error

Cause: Fault at external analogue inputs Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

14010 | Tira 23

Cause: Coolant temperature above maximum Remedy: Check that the cooling air supply is clear / reduce the load / cannot

be remedied: Contact After-Sales Service

12010 | Anode Pressure

Cause: Anode pressure fault Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

13010 | Cathode Pressure

Cause: Cathode pressure fault Remedy: Restart the energy cell / cannot be remedied: Contact After-Sales

Service

Displayed service codes

Page 61

12020 | H2-inlet Pressure

Cause: Fault in hydrogen supply pressure Remedy: Check hydrogen supply / cannot be remedied: Contact After-Sales

Service

15060 | DCDC

Cause: DSP reports a power module error Remedy: Restart / cannot be remedied: Contact After-Sales Service

31010 | Service

Cause: Servicing by Fronius-trained personnel required Remedy: Contact After-Sales Service

13020 | Fira 01 Error

Cause: Air mass sensor error Remedy: Restart / cannot be remedied: Contact After-Sales Service

13030 | Lambda

Cause: Air mass sensor error Remedy: Restart / cannot be remedied: Contact After-Sales Service

15070 | CVMU

Cause: Cell voltage measurement error Remedy: Restart / cannot be remedied: Contact After-Sales Service

15080 | H2-Sensor

Cause: Hydrogen sensor error Remedy: Contact After-Sales Service

15090 | FS CTRL

Cause: Safety system error Remedy: Restart / cannot be remedied: Contact After-Sales Service

15100 | EEPROM

Cause: Error in the control unit’s memory Remedy: Restart / cannot be remedied: Contact After-Sales Service

15110 | RTC

Cause: Error in the control unit’s real-time clock Remedy: Restart / cannot be remedied: Contact After-Sales Service

34010 | Conductivity

Cause: Conductibility of the cooling fluid too high Remedy: Contact After-Sales Service

14020 | Cooling

Cause: Target temperature not reached Remedy: Check for faults in the cooling system / restart / cannot be remedied:

Contact After-Sales Service

15120 | SM Timeout

Cause: Internal fault Remedy: Restart / cannot be remedied: Contact After-Sales Service

Displayed service codes

(continued)

Page 62

Under normal operating conditions, the device requires only a minimum of care and maintenance. However, it is vital to observe some important points to ensure the device remains in a usable condition for many years.

WARNING! A defective gas supply system can cause serious injury and damage. Test the gas supply system in accordance with the applicable national regulations.

Care, maintenance and disposal

General

Annual safety inspection

WARNING! A poorly-maintained unit can result in serious injury or damage.

For the unit to operate safely, the specified maintenance tasks MUST be carried out.

WARNING! An electric shock can be fatal. Before opening the device:

- Turn the keylock switch to the „O“ position

- Disconnect the unit from the connected battery

- put up an easy-to-understand warning sign to stop anybody inadvertently switching it back on again

- using a suitable measuring instrument, ensure that electrically charged components (e.g. capacitors) have been discharged

A safety inspection is required once a year. The safety inspection must be carried out by a Fronius-trained service technician and includes checking all the safety features of the device.

WARNING! Work carried out incorrectly and electric shocks can have fatal results.

- The cover over the electrical connection compartment must only be removed by a trained technician

- All other covers and housing should generally only be opened/removed by the manufacturer’s trained technicians.

- Unauthorised opening or manipulation of the unit will invalidate the warranty and create the risk of serious injury or damage.

A safety inspection is required at certain intervals, as is the maintenance specified below.

Once a year / every 1000 operating hours

Page 63

Dispose of in accordance with the applicable national and local regulations.Disposal

Every 1500 operating hours

The H2 sensor must be replaced after 1500 operating hours. A warning message appears on the display 200 operating hours before this period has elapsed. If the deadline for the function test of the hydrogen sensor has passed, the warning symbol indicates that the function test was not carried out on time.

Maintenance work every 1000 operating hours

Maintenance must be performed every 1000 operating hours, or earlier if operating conditions dictate (e.g. dusty environment). Maintenance is designed to maintain

- the device in perfect working order

- its performance

- the warranty requirements

WARNING! Work that is carried out incorrectly can cause serious injury or damage. Maintenance, technical inspections and checks must only be carried out by qualified personnel. All repairs and maintenance work must be performed exclusively using original replacement parts.

Any changes to the device or the use of parts that are not original parts requires the approval of the manufacturer.

If these conditions are not met, the manufacturer cannot guarantee the safety of the device.

WARNING! Starting up the device without having performed safety-related maintenance work can cause serious injury or damage and is done at your own risk. The manufacturer accepts no liability for damage caused by inadequate maintenance or the non-performance of maintenance.

sensor with more than 1500 operating hours.

Page 64

Technical data

Fronius Energy Cell 25F

Input data

Fuel Hydrogen 5.0

(3.0 possible on request)

Hydrogen supply pressure: 5 – 13.6 bar

72.49 - 197.18 psi

Hydrogen consumption < 1.7 Nm³/h

< 60.71 cfh Hydrogen connection 1/4 in. NPT Cooling air / combustion air 700 Nm³/h

25000 cfh

Max. differential pressure for hydrogen venting line 5 mbar

0.0725 psi

Fuel cell data

DC continuous output power 2 kW System voltage 24 - 30 V DC Maximum output current 82 A System efficiency up to 47 %

Other output data

Hydrogen ventilation < 10 Nm³/h

< 357.14 cfh Hydrogen venting connection 2 * 1/4 in. NPT Hydrogen ventilation line PN 16 / 231.98 psi.

10m / DN 15 (max.)

32 ft. 9.7 in. / 0.59 in. Concentration of hydrogen in the outgoing air (average over one minute) < 25 % LEL Cooling air outlet 700 Nm³/h

25000 cfh

Reaction chamber outgoing pipe DN 50

1.97 in.

< 65 Nm³/h

< 2321 cfh

Pressure loss from the line: max. 0.7 mbar

max. 10.15 psi.

Reaction condensate (purified water, fully desalinated) < 2 l/h

< 0.53 gal/h

Diameter of reaction condensate drainage pipe 6 mm Swagelok

0.24 in.

Page 65

Fronius Energy Cell 25F

(continued)

General data

Data interface RS485, USB, CAN Degree of protection IP 20 Marks of conformity CE, TÜV Süd Fuel Cell Safety Safety standard EN 62282-5-1:2007 Dimensions l x w x h 850 x 470 x 850 mm

33.46 x 18.5 x 33.46 in.

Weight 125 kg

275.58 lb.

Permissible ambient temperature +3 °C - +40 °C (with 85 % rel. humidity) 37.4 °F - 104 °F

Permitted storage temperature +3 °C - +50 °C (with 85 % rel. humidity) 37.4 °F - 122 °F

Altitude above sea level max. 2000 m

6500 ft.

Must be set up horizontally

Page 66

Fronius Energy Cell 50F

Input data

Fuel Hydrogen 5.0

(3.0 possible on request)

Hydrogen supply pressure: 5 – 13.6 bar

72.49 - 197.18 psi

Hydrogen consumption < 3.3 Nm³/h

< 117.86 cfh Hydrogen connection 1/4 in. NPT Cooling air / combustion air 1400 Nm³/h

50000 cfh

Max. differential pressure for hydrogen venting line 5 mbar

0.0725 psi

Fuel cell data

DC continuous output power 4 kW Maximum output current 82 A System voltage 48 - 56 V DC System efficiency up to 47 %

Other output data

Hydrogen ventilation < 10 Nm³/h

< 357.14 cfh Hydrogen venting connection 2 * 1/4 in. NPT Hydrogen ventilation line PN 16 / 231.98 psi.

10 m / DN 15 (max.)

32 ft. 9.7 in. / 0.59 in. Concentration of hydrogen in the outgoing air (average over one minute) < 25 % LEL Cooling air outlet 1000 Nm³/h

35714 cfh

Reaction chamber outgoing pipe DN 50

1.97 in.

< 65 Nm³/h

< 2321 cfh

Pressure loss from the line: max. 0.7 mbar

max. 10.15 psi.

Reaction condensate (purified water, fully desalinated) < 3 l/h

< 0.79 gal/h

Diameter of reaction condensate drainage pipe 6 mm Swagelok

0.24 in.

Page 67

Fronius Energy Cell 50F

(continued)

General data

Data interface RS 485, USB, CAN Degree of protection IP 20 Marks of conformity CE, TÜV Süd Fuel Cell Safety Safety standard EN 62282-5-1:2007 Dimensions l x w x h 850 x 470 x 850 mm

33.46 x 18.5 x 33.46 in.

Weight 132 kg

291.01 lb.

Permissible ambient temperature +3 °C - +40 °C (with 85 % rel. humidity) 37.4 °F - 104 °F

Permitted storage temperature +3 °C - +50 °C (with 85 % rel. humidity) 37.4 °F - 122 °F

Altitude above sea level max. 2000 m

6500 ft.

Must be set up horizontally

Page 68

Page 69

Fronius International GmbH

4600 Wels-Thalheim, Günter-Fronius-Straße 1, Austria E-Mail: energycell@fronius.com http://www.fronius.com

Fronius Worldwide - www.fronius.com/addresses

Under http://www.fronius.com/addresses you will find all addresses of our sales branches and partner firms!

Fronius 25F, 50F Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual