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PULS DIN-rail power supply with IO-Link port is Industry 4.0 ready

04 June 2019

PULS Power introduces its first power supply providing systems designers real-time information on power, temperature and status data, supplied directly from the power supply via their proprietary IO-Link port.

“A power supply is situated at a central nodal point in any system,” comments Marco van der Linden, UK Country manager for PULS. “There is more than just output current flowing, a power supply can be used to record a significant amount of real-time information that is of particular interest to the end user as well as the system manufacturer.”

This data can help increase system availability and reduce maintenance and operating costs. An IO-Link connected power supply has the potential – in parallel with its function as a converter – to also act as a sensor node and make a significant contribution to the Industrial Internet of Things (IIoT). 

The DIMENSION QT40.241-B2 from PULS brings to market the first 3-phase DIN rail power supply (24V / 40A) that makes this system data available to users via an I/O port. 

The PULS QT40.241-B2 provides a trusted power supply technology combined with the new IO-Link feature. Key specifications include 3-phase, 960W, 24V @ 40A, 95.3% efficiency, +50% BonusPower for 5s, 100A for 10ms to trip circuit breakers, Active PFC (harmonic correction) and full power over the temperature range -25°C and +60°C in just a 110mm wide DIN-Rail enclosure.

The new PULS IO-Link v1.1 (IEC 61131-9) networking function features a 4-pole M12 plug connector, transmission speed: COM 3, (< 230.4 kBaud) and integrated non-volatile memory.

Marco van der Linden continues, “Our IO-Link device was award-winning even before its market launch. The Manufacturing Leadership Council of consulting firm Frost & Sullivan looks for innovations that contribute to digitalisation in the production industry. We submitted the QT40.241-B2 to the panel in the first quarter of 2018. The panel members conducted intensive tests to examine the added value that the power supply offers production companies and were impressed by the user-oriented strategy of PULS. The result was the QT40.241-B2 being awarded the respected Manufacturing Leadership Award even before its official market launch.”

Typical applications for PULS DIN-Rail power supplies include, industrial and process control, building automation, panel-building, test and measurement, instrumentation and communications systems. Versions are available approved for railway systems and ruggedised for harsh environments.

PULS IO-Link overview

Advantages of IO-Link as a communication protocol


The component requirements for an IO-Link port in the power supply are relatively low when compared to more complex communication protocols. This offers several advantages: thanks to the low number of additional components, the MTBF value (Mean Time Between Failures) of the QT40.241-B2 remains constantly high. The MTBF stands at 678,000 hours and is indicative of the reliability and thus the fault tolerance of the device


IO-Link was designed as a user-friendly plug-and-play solution. Installation and operation are easily and cost-effectively implemented. The port can be cabled using standard, unshielded IO cables. In addition, compatibility with all standard fieldbus and automation systems is provided, ensuring flexible usage options.


IO-Link is very robust and offers a high level of safety. Industrial power supplies are often exposed to the harsh environments of the lower automation level and need to be protected against external manipulation. Data transmission via IO-Link has been field-tested for these applications.

More information on IO-Link

Integration of the QT40 into an existing IO-Link system

IO-Link was designed to retrieve the signals of the sensors and actuators (IO-Link devices) from the field level. Via an IO-Link master, these are fed into the respective fieldbus system and transmitted to the automation system.

The combination of fieldbus and IO-Link thus enables continuous communication across all levels. IO-Link is an open standard that is compatible with all common fieldbus and automation systems. This allows flexible use.

The integration of the QT40.241-B2 into an existing IO-Link system requires only a connection to the IO-Link master. For this purpose, standardized, unshielded IO cables are used. The installation and operation are thus uncomplicated and can be implemented cost-effectively.

Customer benefits at a glance

Save time and costs 

• Demand-oriented, preventative maintenance

• Automated parameterisation when replacing units

• Avoid downtime

• Improved system capacity utilisation

Improve customer service 

• Rapid analysis and troubleshooting in the event of a fault

• Quality analysis of the power grid

Facilitate machine learning 

• Automatic detection of wear via digital load profiles

• Avoid big data problems (incompatibility, inconsistency, etc.) with current as the data source

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