Skip to content

Engineering Service

Industrial Controller Repair

Repair of servo and stepper drives, inverters and VFDs, PLC modules, HMIs and touch panels, and temperature and process controllers.

Request a QuotationAsk our team

Overview

Service introduction

Drives, inverters, PLC modules, operator panels and process controllers keep production equipment moving. When one of them fails, the whole machine usually stops.

We troubleshoot and repair the electronics inside these units — from gate-drive circuits and power modules to displays, touch assemblies and relay contacts — and carry out the power-on and functional checks that suit each unit.

Technical capabilities

  • AC servo drive, servo pack and micro-step board repair, including feedback-wiring checks
  • Inverter, VFD, spindle inverter and soft-starter diagnosis: control boards, gate-drive circuits and power modules
  • Capacitor, panel and cooling-fan replacement with agreed power-on checks
  • PLC module, I/O and interface circuitry repair, including power-rail checks
  • HMI and touch panel repair: replacement displays, touch assemblies, fuses and regulators
  • Temperature, oven and batch controller, chart recorder and weighing indicator repair

Capability areas covered

Servo & stepper drive electronics

Troubleshooting and repair of AC servo drives, servo packs, micro-step boards and motion-control electronics, including regulator and component replacement, interface repair and feedback-wiring checks.

See it in 3D →

Inverter, VFD & soft-starter repair

Diagnosis of control boards, gate-drive circuits, power modules and display electronics. Includes power-circuit checks, capacitor and panel replacement, cooling-fan servicing and agreed power-on checks.

See it in 3D →

HMI, touch panels & displays

Diagnosis of no-display, blurred-image and touch-panel faults. Replacement displays, touch assemblies, fuses and regulators, followed by display, keypad or touch-response checks appropriate to the unit.

See it in 3D →

PLC & automation modules

Electronic diagnosis and repair of PLC modules, I/O and interface circuitry, including power-rail checks and replacement of degraded components. Program or memory recovery depends on accessible backups and device information.

See it in 3D →

Temperature & process controllers

Repair work on temperature and oven controllers, batch controllers, chart recorders and weighing indicators — component and button-panel replacement, relay-contact repair and applicable functional checks.

See it in 3D →

In 3D

The equipment behind this service

Controllers from our repair records

Eight controllers from our repair records ride an indexing conveyor. Under the gantry each one is repaired the way its record says, then tested the same way: a drive talking again with its program kept, motors running, a display and keys, relay and I/O tests and a recorder carriage running across the chart.

Controllers we have repaired

  • Servo driveElmo Harmonica HAR-1/200Programmed board moved to a 2nd drive · comms OK, program kept
  • InverterToshiba VF-AS1Dust cleared · STO 24 V checked · motor run at 15 Hz
  • InverterSchneider Altivar ATV212HD22N4Burnt PCB treated · MOSFETs, resistors, fan new · load run OK
  • Text HMIESA VT300Blurred display replaced · display and keys OK
  • Touchscreen3.92.100.145/0020-181.2 V rail at 0.388 V · regulator replaced · screen, touch OK
  • Compact PLCFuji Electric FUJILOG T40-1A1RSupply capacitors replaced · PLC function OK
  • Oven temperature controller9564962 (3 units)PCB cleaned · capacitors, diodes new · K-type relay test OK
  • Chart recorderFuji Electric PHACarriage drive cable replaced and tensioned · runs smoothly
  • InverterYaskawa A1000 CIMR-AA4A0208AKATested with a compatible control board · load run OK
  • TouchscreenWELL 150CPower IC, Zener diodes and fuse replaced · 110/220 VAC test OK
  • TouchscreenSAVEOMAT TRM/57V-INOScreen and FFC cable replaced · colour and touch OK
  • Stepping motor driverPack Driver D2590Capacitors, IC, resistor, connectors replaced · run test OK
  • Temperature controllerWEINREICHNo board fault found · PT100 test OK
  • DC motor speed controlKBPB-125Capacitor replaced · 90 V output
  • HMISiemens 6AV6 643-0CD01-1AX1Screen replaced · display and PLC link OK
  • Touch panelsPro-face 3580403-02 · 3180021-04SMD fuse replaced · display OK
  • Batch controllerYokogawa RFC414Operation panel or capacitor replaced · test OK
  • Soft starterDELIXI CDJ1-132Power stage checked · start and bypass test OK
  • Stepper driverConvex CSDM4-A4TP0-M2Diodes, resistors and SMD capacitors replaced
  • Weighing indicatorsUWE 17088-300K · SHICOD25/1078Switch, or capacitors, battery and LEDs replaced · display OK

Manufacturer and model names only identify equipment that has come to our bench. All trademarks belong to their owners; X TRONIC AUTOMATION is an independent repair service, not affiliated with or endorsed by these manufacturers.

Inverter / VFD, inside view

Cover, control board, power board, IGBT modules and heatsink: the stages we check when a drive trips or will not start.

AC servo motor & drive

Power and encoder feedback running between the drive and the motor through a speed profile.

PLC rack & I/O modules

Power supply, CPU and I/O modules on a DIN rail, with LEDs following the scan cycle.

Models drawn in code from the units in our repair records and published dimensions, without logos or name plates; the touchscreen and oven controller are representative. Not photographs. Checks shown are only those in each record.

Applicable equipment and common faults

Applicable equipment

What we work on

  • AC servo drives & servo packs
  • Micro-step / stepper boards
  • VFDs & spindle inverters
  • Soft starters
  • PLC & I/O modules
  • HMIs, touch screens & LCD displays
  • Temperature & oven controllers
  • Batch controllers, recorders & indicators

Send the brand, model and part number with photographs, and we will review whether the unit is within our repair scope.

Typical faults

Symptoms we assess

  • Drive or inverter not powering up or tripping
  • Damaged gate-drive or power-module circuits
  • No display or blurred image on an operator panel
  • Touch panel not responding
  • PLC module power-rail or I/O channel failure
  • Controller buttons, relays or display not working

Engineering process

Our workflow for this service

Start an inquiry
  1. STEP 01

    Understand

    Share the unit model, alarm codes, symptoms and the outcome you need.

  2. STEP 02

    Diagnose

    The unit is opened, inspected and the fault assessed.

  3. STEP 03

    Agree

    Scope and quotation are confirmed with you before repair.

  4. STEP 04

    Repair

    The approved repair work is carried out.

  5. STEP 05

    Verify

    Applicable power-on, display, keypad or functional checks are recorded before handover.

Verification depends on the equipment and available test conditions. Workshop checks are distinguished from testing that requires your machine, program or production setup.

Request for Quotation

Request a quotation: Industrial Controller Repair

Share the manufacturer, model or part number, quantity and the fault you are seeing. Photos or documents help us assess the job faster.

Submit an RFQView our services