The Danfoss Solar Inverters have been designed to save time and costs on installation and offer optimal inverter sizing for PV installations.
Establishing the correct ratio between PV module power capacity and inverter power capacity is one of the key criteria for optimised PV power plant design. Under-sizing the inverter can lead to frequent “derating” of the PV power plant where, for example, the inverter moves the operating point away from MPP. This results in less PV powerplant yield than is actually possible. On the other hand, over-sizing the inverter leads to unnecessary costs.and use multiple individually regulated MPP trackers in the ULX (single phase) and TLX (3 phase) range.
Now it’s possible to design systems with different angles, orientation or different numbers of modules per string, using just one inverter. You can realise any system from 1 kW to 17 kWp.

Danfoss is a global leader within energy-efficient solutions that help save energy and meet the challenge of climate change. The key competencies are cooling of food, air conditioning, control of electrical motors and heating in buildings – as well as solutions for renewable energy such as solar power

Company:    Data IQ

Problem:      Mains Voltage Generator suspected of     damaging inverter when connected

Mains voltage measured at Isolator to Danfoss VLT5202 from 540KVA Generator

An 8 minute sample was taken over the 3 phases from the 540KVA generator with the pneumatic crusher running, using the Fluke 484 the off load incoming voltage was approx. 448V across all 3 phases. However under load, the mains voltage dropped as low as 186V before recovering.

L1 phase in more detail

Zoom in

In our opinion this level of mains perturbation is unacceptable for the incoming supply to this inverter, and is without doubt the cause for the initial failure of the unit. Adding filtration to the mains circuit will have no effect on this level of disturbance.

(The bolt on the mains L3 incoming isolator was also loose – this would cause an imbalance under load at the inverter, causing further problems)

The Generator appears to be the main cause of the failure and will need to be checked, serviced or replaced in order to rectify the problem.

We have a 42″ presentation screen and and a private room with 3 phase 415V for up to 8 people.

Please call us for more information – 01457837145

Danfoss continues to innovate with its VLT drives range updating and changing product codes to reflect new ranges.  Below is a handy guide to previous model numbers and their current range ‘equivalent’. 

VLT 3000 / VLT5000 / FC302 Drive Conversion IP20 / 21

Drive Conversion IP20 / 21

Drive Conversion IP21

Drive Conversion IP54

Drive Conversion IP54

Drive Conversion IP54 WITH BRAKE

The PnP UDT load rig consists of   75Kw 55Kw 37Kw 22Kw 15Kw 11Kw 7.5Kw 5.5Kw 2.2Kw and 1.5Kw AC motors which can be parralled in any combination to provide the correct load conditions for the inverter under test. Each AC motor is coupled to a DC motor which can then be  used to load the shaft.

Danfoss have installed 2 VLT Inverters which are controlling screw jacks that can raise and lower a section of seating. This can provide access into the centre part of the stadium for HGV acticulated vehicles when events are being staged.

One Danfoss inverter is performing the positioning movements – the other inverter on the opposite side is perfectly syncronised to it using Danfoss Sync Pos Option technology.

This gives a perfectly balanced operation of the nicknamed “Dragons Mouth”.

PnP have setup and commissioned this system for Danfoss.

VLT^® drives provide very fast accelerations even with high load in wrapping machines and robots. With built-in synchronising and positioning control the VLT^® drives make wrapping machines extremely efficient and flexible.
Equipped with VLT^® drives, expensive servo systems are saved.

Replace mechanical systems and add flexibility
Wrapping requires precise positioning and synchronising. VLT^® operated motors replace mechanical systems and add flexibility.
Dynamic braking of the vertical operation with heavy load optimises the process and reduces mechanical wear.
Positioning, synchronising, and load estimation are features that make wrapping faster and more flexible.

Palletiser

VLT^® drives provide very fast accelerations even with high load in palletisers. With built-in synchronising and positioning control, the VLT^® drives make packing/unpacking machines extremely efficient and flexible.
Equipped with VLT^® drives, expensive servo systems are saved.

To move goods, for example from a pallet to a conveyor, requires precise stopping.
Dynamic braking of the vertical operation with heavy load optimises the process and reduces mechanical wear. Positioning, synchronising, and load estimation are features that make palletiser operation faster and more flexible.

Filler/capper

Filler
VLT^® drives provide accurate and precise dosing of bottles, flasks, cartons, cans, tubes, and containers. This goes for a wide variety of liquid products that are warm, hot, molten, cold, semi-frozen, viscous, abrasive, particulated, chunky or free flowing. Also acidic or alkaline bases are treated.

Safe blending of propellants
The propellants (CO2, N2 O3) require safe blending of the viscous, abrasive or free flowing liquid and propellant without leaks.
Synchronisation and positioning
With VLT^® drives’ wide range of motion control options they allow positioning, synchronising and cam control with almost any motor and feed-back system. Regardless of whether you need an absolute or an incremental feedback system, VLT^® drives offers innovative and easy to use motion control solutions.

Capper
Traditionally, the rotating motion necessary to seal the bottles was realized with mechanical components. Rising requirements of flexibility in operation have led to the introduction of servo-drives. Due to the increasing use of cold aseptic filling, it is critical to avoid germ formation in assigned machine components. Special servo-drives are necessary for this.

Overall VLT^® benefits are:

• Rapid changeovers
• Aseptic/sanitary
• Easily cleaned
• Reduced maintenance
• Ease of operation
• Connectivity
• Load sharing
• Kinetic backup
• Bus communication