Drive Repair 1

WE ARE EXPERTS IN DRIVE REPAIR

We guarantee your satisfaction with our work

AC & DC Drives repair has been our core focus since the day our business was founded in 2004. We started with Yaskawa and Magnetek AC/DC drives and have grown our OEM brands to include others like Fanuc, Mitsubishi, Okuma, and many more.

We have over 50 years of combined experience working on industrial electronic repairs and can solve any problems you have with your drives.

We Offer:

  • Free drive evaluation
  • Flat feedback device repair pricing
  • Exchange options
  • Rush service options
  • Competent technical support
  • 1 Year Warranty
Learn more about our repair process

WE CAN HANDLE ANY REPAIR CHALLENGE

Team of experts working at a modern and well-equipped facility

Our modern  and well-equipped facility provides us with all the necessary tools to evaluate and repair your AC or DC drive, from multi-meter and DC power supplies, to extensive soldering equipment and circuit analysis devices. Our large inventory of spare parts guarantees a quick turn-around on repairs. From failed inputs/outputs and your motor not running to over-current alarms and ground faults we have experience in repairing these problems. The products we service daily come from a wide range of applications: from Industrial CNC machines and hospital elevators to factory conveyor and industrial crane systems.

With that diversity in mind, Precision Zone has custom built simulators to fully test your AC or DC drive before the repair to identify the failures, and after repair to ensure the drive is ready for the actual production conditions.

Technician Working on a Test Stand

INDUSTRIAL DRIVE TYPES

We service most of the AC and DC Drives used in industrial applications

  • AC SERVO DRIVES
  • DC SERVO DRIVES
  • AC SPINDLE DRIVES
  • DC SPINDLE DRIVES
  • VFD / INVERTERS
PZ Knowledge Base

What are AC Servo Drives?

Servo drives are electronic devices designed to control the operation of electric servomechanisms, most typically electric motors. Servo drives operate the motors by analyzing the signal from the motor feedback devices and continuously adjusting control signals to ensure desired motor performance within the closed loop system.

AC servo drives are paired with AC Servo motors. AC Servo Drives issue commands to the motor and receive feedback input to ensure the controlled motor performs a desired motion. AC Servo Drives continuously monitor the motor status by reading the feedback or sensor information. Feedback data signals the drive to perform continuous adjustments to achieve the needed velocity, torque, position, stiffness, damping, and feedback gain of the controlled AC servo motor.

You can find more information about AC Servo Drives in this article.

PZ Knowledge Base

What are DC Servo Drives?

Servo drives are electronic devices designed to control the operation of electric servomechanisms, most typically electric motors. Servo drives operate the motors by analyzing the signal from the motor feedback devices and continuously adjusting control signals to ensure desired motor performance within the closed loop system.

Unlike AC servo drives, DC servo drives convert Alternating Current (AC) into Direct Current (DC) to control the DC Servo motors they are paired to. Single-phase DC servo drives operate in half-bridge mode by generating a half cycle of DC output from a single phase of AC input. Three-phase DC servo drives are equipped with 6 SCR’s that allow them to operate in full-bridge mode to generate a DC output from a 3 phase AC input.

PZ Knowledge Base

What are Variable Frequency Drives or Inverters?

A variable frequency drive (VFD) controls a motor’s velocity of rotation by modulating the frequency of the incoming AC voltage between the US standard 60 Hz all the way down to 0 Hz.  Depending on the application, VFDs can perform a continuously variable speed change or by switching between the preset speeds.Within the VFDs, this modulation is occurring in three stages:
  1. The first stage rectifies the incoming Alternating Current;
  2. The second stage charges a DC capacitor bank called the “DC Bus”;
  3. The final third stage, driven by a microprocessor and commonly known as a “power inverter”, modulates the energy stored in the DC Bus in the form of a PRM output (typically a 4 KHz carrier) that allows you to control the motor speed and torque.
It is often due to this last stage that VFDs are referred to as “inverters” which confuses some to believe the VFDs and Inverters are different devices.

FEATURED DRIVE BRANDS WE SERVICE

Just a few of the long list of supported OEMs

  • FANUC
  • HAAS
  • MAGNETEK
  • MITSUBISHI
  • OKUMA
  • YASKAWA

TESTIMONIALS

Check out some of our client reviews

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