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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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Blog Post

2nd October 2018

Multiple X Axis

Looking at a Hardinge 710 Mill with 828D and Sinamics drives today with multiple X axis alarms. After a few tests, a faulty motor was diagnosed, more specifically the SMI 20 unit, which had failed to break the motor encoder communications to drive.

We removed the motor, a new SMI 20 was fitted and the configuration was reloaded. The X axis was then a mile out as it had an absolute encoder on, so after a re-teach of the absolute 0 position, the machine was put back into production.

Another happy customer! If you are having similar issues with your machines, please contact us for further details using the red "Request Booking" at the top of the page.

faulty motor diagnosed
Previous Post

Previous Post

21st August 2018

XYZ CT52 Lathe with Siemens 828DSL and Sinamics drives. A hardware fault in the active encoder on the Z-axis alarm was identified.

damaged diodes

Next Post

26th October 2018

"There's a funny smell coming from the electrical cabinet." The 50A spindle drive on the Siemens 810D went bang. All three phases failed the diode test (no surprise there).

This is a fairly common failure on CCU boxes, specifically on the 50A spindle drive.


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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