Industrial Controller Repair
Elmo HAR-1/200 servo drive: programmed board moved to keep the customer's program
The customer needed to keep the program stored in one Elmo HAR-1/200 drive. Each drive is a stack of three boards soldered together, so we desoldered both units in stages, moved the programmed middle board into the second drive and soldered it back exactly as it came apart. It started with its program and parameters intact.
Elmo HAR-1/200 · Three-board stack desoldered in stages · Program and parameters retained
- Engineering category
- Industrial Controller Repair
- Equipment model
- Elmo HAR-1/200 servo drive
- Service
- Industrial Controller Repair
- Repair date
- October 2026
The repair, step by step
Illustrative 3D model drawn in code to explain the repair. Not a photograph of the customer's equipment.
1Three soldered boards
Each drive is a stack of three boards; the program is on the first drive's middle board.
2Desoldered in stages
On both drives the top board is desoldered and lifted off, then the middle board.
3Program board moved
The programmed middle board goes into the second drive.
4Soldered back
The middle board, then the top board, are soldered back as they came apart.
5Power-on test
It starts normally, communication is restored, and the program and parameters are kept.
01
Problem description
The customer wanted to keep the application program stored in one drive.
02
Confirmed findings
- Inside, each drive is a stack of three boards (top, middle and bottom) joined by soldered headers; the program is on the middle board.
- The boards cannot simply be unplugged: they have to be desoldered apart in several stages.
03
Repair / engineering method
- Desoldered both drives in stages: the top board first, then the middle board.
- Moved the programmed middle board from the first drive into the second.
- Soldered the second drive back together exactly as it was taken apart, then closed it up.
04
Tests performed
- Power-on test: the drive started normally and communication was restored.
05
Images
The drive, front connectors
06
Final result
The drive runs with the customer's program and parameters retained.
Manufacturer and model names are used only to identify the equipment we repaired. All trademarks belong to their owners; X TRONIC AUTOMATION is an independent repair service and is not affiliated with or endorsed by the manufacturer.
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