Alsmart® FAQ

Danfoss’ universal programmable controllers serve as the smart, compact, and powerful brain of HVAC units. Equipped with the latest technology, they enable best-in-class application management, support low-GWP natural refrigerants, and feature a high-tech modular design.

Alsmart® Updates

How to update Alsmart® AS-CX06 firmware with Alsmart® Service Tool? (watch video)

One option to update your Alsmart^® controller firmware is by using the Danfoss Alsmart^® Service Tool software. Have a look at the video to learn how to use it.

How to update Alsmart® AS-CX06 firmware with Python? (watch video)

One option to update your Alsmart^® controller firmware is by using Python software. Have a look at the video to learn how to use it.

How to update Alsmart® AS-CX06 firmware with USB-C? (watch video)

One option to update your Alsmart^® controller firmware is by using the USB-C port. Have a look at the video to learn how to use it.

Training: Master Alsmart® Design programming

Become an expert in programming Alsmart^® controllers by joining a practical face-to-face training in Alsmart^® Design. Join us at one of the upcoming sessions:

Nordborg, Denmark – March 4–5 | August 25–26 | October 20–21
Venice, Italy – May 5–6 | September 15–16
Tallahassee, USA – April 14–15 | July 14–15 | October 27–28
Osasco, São Paulo, Brazil – April 7–8 | July 7–8 | October 6–7 (conducted in Portuguese)

More info and sign up

Alsmart® Innovative modular design with intuitive toolchain

Alsmart® Hardware

Is the side connector included with the expansion module, or does it need to be purchased separately?

The side connector is included with each expansion module, so there is no need to purchase it separately. However, it is also available as a spare part with a defined part number.

How many extensions can be connected to the Alsmart® and the power supply AS-PS?

It depends. The model of the main controller (AS-CX06) will have direct influence on the maximum allowed number of extension modules. For more details, take a look at the “Connections” sector here in the data sheet for more information: https://assets.danfoss.com/documents/455390/AI488320847739en-000202.pdf

How to ensure the compatibility of my Alsmart® hardware, Alsmart® Design and the firmware?

Danfoss is constantly improving the features of the Alsmart^® controllers.

Therefore, updates are released from time to time.

The table below displays the compatibility map for the Alsmart^® Design as of April 2025.

How can I assemble a 6-way connection cable myself to connect Alsmart® to a display?

You can assemble a 6-way connection cable by following our step-by-step guide. Click the here for the full instructions

How to connect Danfoss stepper valves to Alsmart®?

Danfoss valve connections must follow the table found on Installation Guide.

Which temperature sensors are compatible with Alsmart®

Standard ones as Pt1000, PTC100, NTC10k and NTC5k. Custom sensors can be also created according to application needs.

Can multiple protocols be used at same on Ethernet ports?

Yes, since they use different ports

What is the max current of DO/AO for PWM signal?

For AO it is 15mA; for SSR it is 0.5A

Is there galvanic isolation between DI and DO outputs?

Yes

What is the main power supply for the controller? The AK-PS from AK2 product line?

There is no specific Power Supply for the Alsmart AS-CX06 main board. A regular transformer can be used (check the datasheet for further informations related to load requirements). The AK-PS power supply can also be used.

About the SSR relays - are they for AC/DC or only AC? Is there any restriction of voltage?

Output 100VDC/240VAC

What is the maximum distance between the Alsmart® controller and the Danfoss stepper valves?

30m. Check the requirements of the cable and impedance for each valve

Do the 3 lights in the Alsmart controller (red, yellow, green) come with any functionality enabled from factory, or is it necessary to assign a function to them using the software?

There are some specific patterns defined by BIOS to provide feedback before the application starts; e.g. to signal boot up, upgrade, errors, expansion running, expansion error. When the application starts it takes control of LED. We provide a library with default usage but it can be changed

When assembling the Alsmart with several expansions, an AS-PS is needed. Can we use the same power supply from the main controller to supply the AS-PS as well?

Yes, power supplies are isolated

If one of the extension modules is defective, is there any warning - such as the LED blinking, or some kind of alarm? This question reflects the AK2 extension modules - they have this feature in case of communication failure

Yes,
Expansion lost connection: green=ON, orange=OFF, red=ON

Can a single power supply be used for I/O expansion modules and power supply module AS-PS20?

Yes, since it meets the sum power of all expansion modules.

Remote expansion

The limitation we have is a few metres, less than 2m

Alsmart® Design Software

Where to find the Alsmart® Design & other tools via Partner Portal?

The Alsmart^® Design is only intended to be used for approved customers, this is to ensure the best-in-class support from the local Danfoss Office.

You can find the Alsmart^® Design, libraries, templates, videos & other tools under the Partner Portal. An approval request will be sent to Danfoss. Steps to be followed in case you would like to sign up for the Partner Portal:

Access https://partner.danfoss.com/
Go to the Knowledge Hub
Alsmart Tab & request the access for the first time

Is the Alsmart® Design based on execution order? Does the order of the networks affect the performance of the algorithm?

Do we have the LogLibrary for Alsmart® Design?

Yes

How to create a logic to show or not a screen according to a parameter or condition in Alsmart® Design?

In case you want a page associated with a parameter to appear/ disappear, you need to use VK_Fxx.
Therefore the virtual button, which opens the page, will be set only if the desired condition is true.

When a new screen is created, what is the pop-up option in the Alsmart® Design?

It is a pop window that you get on top of the current, generally with some quick information. It´s also known as "splash screeen". It typically does not occupy the full screen and you can get back to the previous.

Do the MQTTS have authentication by TLS?

Yes

WEB server: can it be customized?

To date, the web server is inside the aspkg package, so not customizable.

How to manage software that covers several machines and therefore different IOs?

The API allows a library to be developed that enables this