I/O module repair: analog and digital input and output cards
Dead channels, drifting analog readings, failed optocouplers, blown input protection and worn relay contacts, repaired and calibrated.
- Free diagnosis
- Quote before any work
- 6-month warranty
- India and worldwide
What we repair
One dead channel can stop a process. We repair input and output modules at component level and check every channel, not only the one that failed.
Analog channels are checked for accuracy on 4 to 20 mA and 0 to 10 V, and temperature inputs against reference sources.
Common brands and models
How we test it
- Analog accuracy. 4 to 20 mA and 0 to 10 V checked at several points.
- RTD and thermocouple. PT100 and K/J inputs checked with a simulator.
- Isolation. Channel-to-channel isolation tested.
- Relay outputs. Switching tested under inductive load.
Common faults we fix
Symptoms engineers send us most often, and what we do about them.
One or more channels dead
Failed optocouplers, input protection or output drivers replaced.
Analog reading drifts or is wrong
Reference, ADC/DAC and calibration parts repaired and checked against a reference.
RTD or thermocouple input faulty
PT100 and K/J input circuits repaired and verified.
Relay outputs not switching
Relays and contacts replaced and tested under inductive load.
Module fault LED or not seen on the bus
Bus interface and module supply repaired.
Isolation failure between channels
Isolation parts replaced and channel-to-channel isolation verified.
How the repair works
1. Send the unit
Courier it to our Vadodara lab from anywhere in India or abroad, with a note of the fault.
2. Free diagnosis
We find the failed components and send you the exact price and turnaround.
3. Repair and test
After your approval we repair at component level and test under real operating conditions.
4. Back with warranty
The unit returns to you with a 6-month warranty on the repair.
Frequently asked questions
Do you test every channel?
Yes. All channels are tested, and analog channels are checked for accuracy.
Which I/O brands do you repair?
Siemens ET 200S and ET 200SP, Rockwell POINT I/O, Beckhoff, WAGO 750, Bachmann, GE Fanuc and others.
Can you repair safety I/O modules?
Send us the model number and we will tell you if we can repair and test it properly.
How long does an I/O module repair take?
Standard turnaround is 3 to 4 working days from receipt of your PO, when components and schematic are available with us. Priority (24 to 48 hours) and breakdown service are available on request.
Send us your faulty unit for a free evaluation
Tell us the make, model and fault. We reply with a diagnosis plan and a clear quote, and every repair carries a 6-month warranty.
- Call or WhatsApp+91 95108 31507
- Lab addressB/203, 2nd Floor, The Empire, Undera-Koyali Road, Undera, Vadodara, Gujarat 391330, India
- Lab hours (IST)Monday to Friday, 9:00 to 17:00; Saturday, 10:00 to 15:00; Sunday closed