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We provide onsite support to our customers - any machine tool, any age

Experience in all CNC manufacturing industry fields, including automotive, aerospace, textiles, food & beverage, petrochemicals, R&D, science & education

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20th December 2023 to 3rd January 2023

Blog Post

21st November 2019

Resolving a Siemens 611U fault

Today we were looking at a Siemens 611U fault with the alarm E-A608 speed controller output limited.

The fault was diagnosed by swapping the power section (LT module) to another axis and the fault followed, indicating a faulty LT module.

After replacing the 2x15A unit, the machine was back in production.

Although the alarms are displayed on the 611U, a better description of the fault can be found by using SinucomU software, which makes diagnosing the root cause much easier.

At Control CNC Services Ltd., we offer a cost effective CNC machine prevention maintenance service to help keep your business up and running.

Please contact Control CNC using the green button at the top of this page if you think we would be able to help with your machine. We cover the whole of the UK and Ireland. We can help you book a service, quote you for a repair, or help you source and purchase the best quality parts for your business.

Simodrive LT Modul 2 x 15A
Simodrive LT Modul 2 x 15A
Simodrive LT Modul 2 x 15A
Dugard Eco VMC with Siemens 828D control

Previous Post

13th November 2019

This week we have been looking at multiple topology errors on a Dugard Eco VMC with Siemens 828D control and Sinamics drives.

After confirming that all the hardware was OK, we discovered that the control had lost the topology data for drive object 6 which was the 4th axis and all of it's associated hardware (motor, drive, encoder and SMI module).


Next Post

4th December 2019

Today we replaced a 2x15A drive on an XYZ Minimill 560 with Siemens 802D control after the X axis failed with a drive fault.

The next task was to overcome a software glitch on another XYZ, this time a 710VMC with Siemens 828D control. After reloading a fresh NC archive, this resolved the issue caused by a corrupt file, which we suspect occurred after a power cut.


A family business established in 2016, Control CNC Services Ltd. has over 30 years of experience in the CNC machine tool industry. 

Our engineers support all aspects of CNC applications. We provide a total breakdown solutions package; whether the fault is mechanical, electrical, electronic, software, control, or drive, our multi-disciplined engineers will resolve the problem.

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33 Holman Street, Kidderminster, DY11 6QY

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