Absolute vs Incremental Encoders

In the world of feedback, AC motors will typically utilize one of an optical absolute encoder, an optical incremental encoder or a resolver. This article will focus on the primary differences between the absolute and incremental encoders. Read More

Tags : encoder, incremental, absolute

Series Overview:

Yaskawa offers many different types of AC servo drive units and the CACR-SR_BB1 is one of the more common drives we work on and see often at our facility. This series is offered in a few different output ratings, starting at 0.3kW (300W) and leading up to 6.0kW. The model number includes characters to represent the applicable motor series as well as the pulse count the encoder will need to have. Encoder pulse options vary by application and there are options for 1000, 1500, 2500, 4000, 5000, and 6000 pulses per revolution. Read More

Tags : Yaskawa, AC Servo, CACR-SR_BB

Here at Precision Zone, we use specialized testing equipment for full evaluation of motors and their performance. With these tools we are able to obtain a complete analysis of the motor’s health.  With just a quality multimeter, a reduced test can be performed to try and identify any major issues with the motor’s windings. Typically, a milliohm and megohm meter are the recommended tools of choice for field evaluations but a multimeter can work as well. Read More

Over time, bearing housings on a motor can wear down and cause extra friction with the bearings. As this gets worse, it allows extra play for the bearings where there normally should not be any free space.

Once this occurs, that extra play in the rotation of the bearing can lead to some major issues. One of the common issues that we see rise from this is extra current load, which can lead to insulation damage on the motor or even drive damage with the output sections. Read More

Tags : Motor bearing, Housing Repair, CNC, Electric Motor