Series AC Drives for pumps
* Discontinued series! Ask for new version or replacement!

ABB frequency inverter ACH550 series offers proven reliability, flexibility, and every essential HVAC communication protocol. It is pre-programmed for several applications, including: air handling units, cooling towers, chillers, and more. The intelligent variable speed drive is dedicated to saving energy, producing quality air, and alleviating environmental concerns. Reduce costs by controlling your building’s fans, compressors, and pump motors efficiently, for an energy conscious commercial environment. 

  • Embedded BACnet
  • Interactive startup assistant
  • Tailor made HVAC software
  • Two built-in PID controllers
  • Real time clock and calendar
  • Built-in timers
  • Harmonic mitigation built-in

Additional links:

 Technical documentation and Downloads
 Request additional information and get a price quote

Model range

ACH550 series, voltage 208-240 V (3 phase) * Discontinued series! Ask for new version or replacement!

Model Capacity,
Deceleration time, sec Dimensions
(W x H x D), mm
ACH550-01-04A6-2 0.75 4.6 0,1-1800 125x369x212 reduced!
ACH550-01-06A6-2 1.1 6.6 0,1-1800 125x369x212 reduced!
ACH550-01-012A-2 2.2 11.8 0,1-1800 125x369x212 reduced!
ACH550-01-017A-2 4 16.7 0,1-1800 125x369x212 reduced!
ACH550-01-024A-2 5.5 24.2 0,1-1800 125x469x222 reduced!
ACH550-01-031A-2 7.5 30.8 0,1-1800 125x469x222 reduced!
ACH550-01-046A-2 11 46 0,1-1800 203x583x231 reduced!
ACH550-01-059A-2 15 59 0,1-1800 203x583x231 reduced!
ACH550-01-075A-2 18.5 75 0,1-1800 203x689x262 reduced!
ACH550-01-088A-2 22 88 0,1-1800 203x689x262 reduced!
ACH550-01-114A-2 30 114 0,1-1800 203x689x262 reduced!
ACH550-01-143A-2 37 143 0,1-1800 300x880x400 reduced!
ACH550-01-178A-2 45 178 0,1-1800 300x880x400 reduced!
ACH550-01-221A-2 55 221 0,1-1800 300x880x400 reduced!
ACH550-01-248A-2 75 248 0,1-1800 300x880x400 reduced!

ACH550 series, voltage 380-480 V (3 phase) * Discontinued series! Ask for new version or replacement!

Model Capacity,
Deceleration time, sec Dimensions
(W x H x D), mm
ACH550-01-02A4-4 0.75 2.4 0,1-1800 125x369x212 reduced!
ACH550-01-03A3-4 1.1 3.3 0,1-1800 125x369x212 reduced!
ACH550-01-04A1-4 1.5 4.1 0,1-1800 125x369x212 reduced!
ACH550-01-05A4-4 2.2 5.4 0,1-1800 125x369x212 reduced!
ACH550-01-06A9-4 3 6.9 0,1-1800 125x369x212 reduced!
ACH550-01-08A8-4 4 8.8 0,1-1800 125x369x212 reduced!
ACH550-01-012A-4 5.5 11.9 0,1-1800 125x369x212 reduced!
ACH550-01-015A-4 7.5 15.4 0,1-1800 125x469x222 reduced!
ACH550-01-023A-4 11 23 0,1-1800 125x469x222 reduced!
ACH550-01-031A-4 15 31 0,1-1800 203x583x231 reduced!
ACH550-01-038A-4 18.5 38 0,1-1800 203x583x231 reduced!
ACH550-01-045A-4 22 45 0,1-1800 203x583x231 reduced!
ACH550-01-059A-4 30 59 0,1-1800 203x689x262 reduced!
ACH550-01-072A-4 37 72 0,1-1800 203x689x262 reduced!
ACH550-01-087A-4 45 87 0,1-1800 203x689x262 reduced!
ACH550-01-125A-4 55 125 0,1-1800 265х739х286 reduced!
ACH550-01-157A-4 75 157 0,1-1800 300x880x400 reduced!
ACH550-01-180A-4 90 180 0,1-1800 300x880x400 reduced!
ACH550-01-246A-4 132 246 0,1-1800 300x880x400 reduced!
ACH550-02-368A-4 200 368 0,1-1800 347x2024x617 reduced!
ACH550-02-486A-4 250 486 0,1-1800 347x2024x617 reduced!
ACH550-02-526A-4 280 526 0,1-1800 347x2024x617 reduced!
ACH550-02-602A-4 315 602 0,1-1800 347x2024x617 reduced!
ACH550-02-645A-4 355 645 0,1-1800 347x2024x617 reduced!

ACH550 series, voltage 380-480 V (3 phase) IP 54 * Discontinued series! Ask for new version or replacement!

Model Capacity,
Deceleration time, sec Dimensions
(W x H x D), mm
ACH550-01-02A4-4+B055 0.75 2.4 0,1-1800 125x369x212 reduced!
ACH550-01-017A-2+B055 4 17 0,1-1800 300x545x420 reduced!
ACH550-01-024A-2+B055 5.5 24 0,1-1800 240x485x400 reduced!
ACH550-01-03A3-4+B055 1.1 3.3 0,1-1800 240x485x400 reduced!
ACH550-01-04A1-4+B055 1.5 4.1 0,1-1800 240x485x400 reduced!
ACH550-01-05A4-4+B055 2.2 5.4 0,1-1800 240x485x400 reduced!
ACH550-01-06A9-4+B055 3 6,9 0,1-1800 125x369x212 reduced!
ACH550-01-08A8-4+B055 4 8.8 0,1-1800 240x485x400 reduced!
ACH550-01-012A-4+B055 5.5 11.9 0,1-1800 240x585x400 reduced!
ACH550-01-015A-4+B055 7.5 15.4 0,1-1800 240x585x400 reduced!
ACH550-01-023A-4+B055 11 23 0,1-1800 240x585x400 reduced!
ACH550-01-031A-4+B055 15 31 0,1-1800 300x700x415 reduced!
ACH550-01-038A-4+B055 18.5 38 0,1-1800 300x700x415 reduced!
ACH550-01-045A-4+B055 22 45 0,1-1800 300x700x415 reduced!
ACH550-01-059A-4+B055 30 59 0,1-1800 300x800x415 reduced!
ACH550-01-072A-4+B055 37 72 0,1-1800 300x800x415 reduced!
ACH550-01-087A-4+B055 45 87 0,1-1800 300x800x415 reduced!
ACH550-01-125A-4+B055 55 125 0,1-1800 369x309x776 reduced!
ACH550-01-157A-4+B055 75 157 0,1-1800 550x1090x410 reduced!
ACH550-01-180A-4+B055 90 180 0,1-1800 550x1090x410 reduced!
ACH550-01-195A-4+B055 110 195 0,1-1800 550x1090x410 reduced!
ACH550-01-246A-4+B055 132 246 0,1-1800 550x1090x410 reduced!

Peace of mind with ABB Drives ACH550 series

Keeps you out of trouble 
− EMC fi lters for building sector, class C2 (1st environment). 
− Meets mandatory harmonic current standard EN 61000-3-12. 
− Coated electronic boards improve reliability and extend the life-time of the drive. 
− Ambient temperature up to 50 ˚C.

Override can be used, for example, during a fire for extracting fumes rapidly and efficiently from a building. When override is activated the drive operates in a predefined direction at a preset speed while ignoring the drive’s other control commands and internal protective functions. 
Real-time clock and calendar 
The built-in real-time clock and calendar function provides true time and date stamps to drive events and enables the use of timers. Information is displayed clearly on the control panel. Further, daylight saving times can be easily selected according to different time zones.

Built-in timers 
External timer circuits are no longer needed. Built-in timers - utilizing the real-time clock - allow starting and stopping the drive or changing the speed, according to the time of day or night. Relay outputs can be operated with timers to control any auxiliary equipment on site.

Makes your life comfortable 
− Multilingual control panel with HELP button 
− 14 HVAC application macros are preprogrammed and selectable without programming. 
− A printed user’s manual is delivered with each drive. 
− Miniature circuit breakers can be used instead of fuses.

Swinging choke - up to 25% less harmonics 
ABB’s swinging choke lets the drive for HVAC deliver up to 25% less harmonics at partial loads, compared to a conventional choke of equal size.

Main switch as option for local safety 
Integrated drive specific disconnect solution for 
− easy installation 
− easy serviceability 
− space savings

Interactive startup assistants 
Startup assistants help to commission the drive. Easy step-by-step assistants show how to use the PID controllers, timer functions and serial communications settings.

Tailor-made HVAC software 
The ABB drive for HVAC delivers a complete solution with a tailor-made configuration that will save you time and money. For example, actual process values like differential pressure signals can be converted inside the drive and displayed in engineering units like bar, l/s and °C.

Intelligent and intuitive ABB inverter ACH550 series for improved energy efficiency

Smaller carbon footprint through improved energy efficiency
One of the biggest benefits of using ABB drives for HVAC applications is the energy saving opportunity over fixed speed motors or conventional flow control methods. Rather than have an electric motor running continuously at full speed, an AC drive allows the user to steplessly control the motor speed, depending on the demand. In HVAC applications, the most of which being pumps and fans, AC drives can cut energy bill as much as 70 percent. As such ABB is a world leader in assessing the energy saving potential within the HVAC sector. ABB offers energy appraisals coupled with a series of energy saving tools and calculators built-in within drives. Energy appraisals can rapidly determine just where and how much energy can be saved. By reducing the motor speed by 20 percent, power required can be lowered by up to 50 percent. In addition, ABB drives for HVAC offer a return on investment usually within months on the basis of energy savings alone. For over 45 years ABB has delivered millions of AC drives worldwide. In 2013 these drives cut electricity consumption by 400 TWh (400 000 000 000 kWh). This is equivalent to the average annual consumption of electricity of more than 100 million European households. This corresponds to an average CO2 emission reduction of 340 million tonne.

A clean standard against dirty electricity - IEC/EN 61000-3-12
The ABB drive for HVAC fulfils IEC/EN 61000-3-12 and carries manufacturer’s written statement of compliance. This means security and simplicity for specifying engineers and facility managers. This European standard sets strict limits for harmonic currents produced by products connected to the electrical network. Harmonic currents are forms of pollution on the electrical network. The harmonics can cause several undesired effects - flickering lights, failing computers and overheating of electrical equipment.

Ambient temperature up to 50 °C in 24/7/365
Ambient temperatures affect the output performance of each drive. The hotter it is outside - or inside the cabinet in which the drive is installed - the less current the drive can deliver. This means that the designer has to select the drive according to the peak tem per a ture. To make the selection easier, the identical output current values for both IP21 and IP54 units are available at different ambient temperatures.

Interactive maintenance assistant
Maintenance scheduling no longer requires guesswork.
The drive alerts you when maintenance is required based on your individual requirements.

Interactive maintenance assistant
Maintenance scheduling no longer requires guesswork. The drive alerts you when maintenance is required based on your individual requirements.

Fault logger
The fault logger of the ABB drive for HVAC is especially useful in tracking down drive failures through its use of the real-time clock.
In addition to recording both time and date, the fault logger also takes a snapshot of 7 diagnostic values - like motor speed and output current. You know what happened and when.

Tools for
− calculating energy savings and payback times
− commissioning
− remote access and diagnostics

Noise smoothing
Software function to reduce the audible noise.

Tailor-made control panel for HVAC applications
− Interactive assistants advise on the use of PID (incl. air flow calculation), timers, fieldbus and facilitate commissioning
− HELP button always available
− Up- and downloading of parameters from one drive to another
− Easily detachable by hand (both IP21 and IP54)
− Built-in real-time clock
− 18 languages available in one single panel, including Russian, Turkish, Czech, Polish and Chinese

Energy efficiency
− Advanced motor control features, such as flux optimization, help lower energy use. With flux optimization, the magnitude of the flux is controlled according to the actual load. This results in reduced energy consumption and lower noise.
− Built-in calculators monitor energy used and saved in kilowatt-hours and megawatt-hours, as well as show the saving as a monetary value in local currency and as reduced carbon dioxide (CO2) emissions.

Flange mounting
The drive can be flange-mounted to the side of an air duct or integrated with an air handling unit (AHU). By placing the heat sink of the drive in the air flow, additional cooling is achieved efficiently.

Two PID controllers as standard
The ABB drive for HVAC has two independent PID controllers built in. As an example: one PID controller works with the drive to maintain the duct static pressure. Simultaneously, the other PID controller can be used to control a separate external device, eg, a chilled water valve. All of this can, of course, be monitored and controlled through serial communications.

Mounting side by side
The ABB drive for HVAC is optimized for installing into cabinets: no space is needed between the units, whether IP21 or IP54, even with the covers on.

Motor protection with PTC or PT 100                                     Options


Inputs and outputs
The diagram below shows the inputs and outputs of the ABB drive for HVAC. The sample connections are suitable for a number of HVAC applications like supply and return fans, condensers and booster pumps.

− All inputs and outputs are short-circuit protected.
− All connectors are individually numbered, re duc ing possible causes of misunderstandings and errors

Technical data for ABB frequency inverter ACH550 series

Download manuals (all parameters)

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