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March 17, 2016

3 Synchronous servo drives you need to know 

The drives for synchronous (brushless) motors produced by ALTER Elettronica were created to meet the needs of installers and end users to have flexible products which can be interfaced with the largest possible number of electrical motor brands and models. [read more]

Tags: #Synchronous #ServoDrive

September 21, 2015

Success Stories: Converting Signals from Linear EnDat Encoder to TTL Incremental Encoder with Hall Sensors

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Success stories: ALTER's solutions for demanding customers

A customer wants to replace the old linear position sensors on the axes of a machine tool with new linear scales with linear EnDat absolute encoders but the existing numerical control only accepts input signals from TTL incremental encoders... [read more]

July 15, 2015

Repair: How we fix and refurbish your old

ALTER servo drive

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Today I'll tell you how we, al ALTER, manage repairs; it is worth pointing out that we repair only our products and which we carry out repairs also on those models of servo drives which are now out of production. 

An initial contact is essential to know the date of arrival of the goods and to plan the repair process, but above all, to understand the problem type and operating conditions in which it occurs. [read more]

April 27th, 2015

Inductosyn®: is there a need for a converter?

We at ALTER Elettronica are evaluating the opportunity of developing a module to convert a signal of a linear or rotative Inductosyn® into a signal of a TTL incremental encoder.


The ABC of Inductosyn®

Inductosyn® is a registered trademark by Farrand Controls (today a division of Ruhle Companies Inc.) and it refers to...  [read more]

Tags: #Inductosyn, #Converter, #Opinion, #Questionnaire

April 8th, 2015

How to choose the accessories for your

Servo Drive – part 2

In this second part of the post about accessories we'll focus on two pieces of equipment often required by ALTER's customers:

  • EMC Filters and shielded cables

  • Transformers

[read more]

Tags: #EMC Filters, #Transformers, #ServoDrive

November 17th, 2014

How to choose the accessories for your

Servo Drive – part 1

Having the right accessories to complete your servo drive is essential for its correct operation and to comply with regulations such as the Electromagnetic Compatibility standards. In these posts we will talk about:


  • Inductors (three-phase chokes, smoothing inductors)

  • Resistors for motor braking energy dissipation

  • Power-supply units capable to recover motor braking energy to mains

  • EMC filters

  • Transformers

[read more]

Tags: #Inductors, #Resistors, #Power-supply, #ServoDrive

October 24th, 2014

How to choose a Servo Drive for your retrofit

ALTER servo drive family
Man with a question mark

After having examined, in the previous post, how to figure out what servomotor we are using, what kind of data we need and where to find them, we are now looking at how to use that information to choose the right servo drive.


The essential parameters needed to choose a new servo drive are... [read more]

Tags: #Retrofit, #Revamping, #ServoDrive

October 16th, 2014

What servo motor do I have? The perfect retrofit

starts here

Motor plate

Let's start! When a customer asks us what drive he should choose to replace a damaged one, the first question we ask is always the same: what kind motor does the converter control?


The motor data needed are... [read more]

Tags: #Retrofit, #Revamping, #Motor, #Drive

October 6th, 2014

The Blog of ALTER Elettronica: here we go!

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Hello World!

This blog was created as a virtual meeting point for professionals in the field of industrial automation. Each week we will publish a short post about not only our products and offers... [read more]

Tags: #ALTER, #Blog

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