Control CNC Services Ltd

07469 718828
01562 702 352

07469 718828 or 01562 702 352

  SIEMENS BLACKBELT TRAINED

  OVER 25 YEARS INDUSTRY EXPERIENCE

  HUGE SIEMENS STOCK

  SIEMENS BLACKBELT TRAINED
  OVER 25 YEARS INDUSTRY EXPERIENCE
  HUGE SIEMENS STOCK

Siemens 828D & 840DSL systems with multiple drive errors

Posted on 11th September 2021

This is a fault we see quite regularly on Siemens 828D and 840DSL systems, multiple drive errors including cyclic data transfer alarms and over-temperature alarms.

The common cause of these alarms is the SMI module failure on one of the servo motors.

SMI Module

SMI Module on servo motor

SMI Module

SMI Module

Fortunately we keep these in stock and are able to supply them to our customers fully programmed to their motor’s serial number and ready to go.

They can be fitted in minutes without having to send your motor off to a repairers saving on excessive downtime and costs.


We are Siemens specialists and keep a large stock of hardware and are also invested in repairing Siemens hardware where we can, please contact us for further details.

If you are interested in any of our machines please contact us by using the green "Request Booking" at the top of the page.


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