Controller Repair
Allen-Bradley PLC
CompactLogix · ControlLogix · MicroLogix · SLC 500 · PLC-5
Service Rockwell Automation Allen-Bradley controllers — we repair CPU, I/O modules, power supplies and EtherNet/IP, DeviceNet and ControlNet communication cards. Diagnostics included in repair, 12-month warranty.
Diagnostics included in repair
No-obligation quote
12-month warranty
Courier pickup from all of Europe
Program backup before repair
Service Allen-Bradley: full repair MicroLogix, CompactLogix i ControlLogix
CompactLogix
Repair of 1769-L16ER, L24ER, L30ER, L33ER, L36ERM. Service of analog and digital 1769-IM modules, 1769-PB power supplies.
ControlLogix
Repair of 1756-L61, L62, L63, L71, L72, L73. Service of 1756-IA/OA I/O cards, 1756-PB72 power supplies and 1756-RM redundancy modules.
MicroLogix
Repair of MicroLogix 1000, 1100, 1200, 1400. Service of compact CPU, 1762-IQ/OQ expansion modules and communication ports.
SLC 500
Repair of discontinued SLC 5/03, 5/04, 5/05. Service of 1746-IA/OA I/O cards, 1746-P4 power supplies and communication processors.
PLC-5 (EOL)
Repair of discontinued PLC-5/10, PLC-5/20, PLC-5/40, PLC-5/80. Regeneration of I/O cards and power supplies for production lines without manufacturer support.
Communication modules
Repair of 1756-EN2T EtherNet/IP cards, 1756-DNB DeviceNet, 1756-CNB ControlNet. Service of 1747-SDN scanners and communication bridges.
Why EFIXLAB?
Service Allen-Bradley focused on rapid production restoration
- Priority diagnostics — for stopped lines we react immediately, diagnostics result within 24h.
- RSLogix / Studio 5000 program backed up — program and configuration backup before every repair.
- Service of SLC 500 and PLC-5 (EOL) — we repair discontinued platforms no longer supported by Rockwell Automation.
- I/O and EtherNet/IP network testing — verification of every channel and communication correctness after repair.
- Fast turnaround — diagnostics up to 5 business days, repair after approval: 5–7 business days (after receiving necessary components). As a rule — time may be extended depending on component availability and repair complexity; deadlines agreed individually.
- 12-month warranty — on every repair performed, without exceptions.
How does repair work for?
Transparent process — no downtime, no surprises
Request
online or by phone
Shipping
by courier
Program backup
+ diagnostics
Quote
no obligation
Repair
& testing I/O
Return
with warranty
Report fault Allen-Bradley — no-obligation quote
Provide the model controllers Allen-Bradley and fault description. An EFIXLAB specialist will contact you with a diagnosis and quote.
Dziękujemy! We have received your request — our Allen-Bradley specialist will contact you shortly.Frequently asked questions
Yes — we specialize in repairing discontinued Allen-Bradley platforms: PLC-5, SLC 500 and SLC 5. We have components for regenerating these controllers — repair is much faster than replacing the entire control system.
Yes — before repair we create a backup of the program from the controller memory. The program is returned with the device. If program read-back is not possible (damaged memory), we inform you in advance.
The FAULT LED can indicate a configuration error, program error or hardware fault. Diagnostics pinpoints the exact cause. In the case of program errors repair is sometimes free — we charge only for work actually performed.
Diagnostics: up to 5 business days. Repair after approval: 5–7 business days (after receiving necessary components). Express mode available for stopped production lines. As a rule — repair time may be significantly extended depending on component availability and repair complexity. Deadlines are agreed individually with the client.
We return the device; if repair is declined, we charge a diagnostics fee (300 PLN net). We can help find a replacement or advise on migration to a newer Logix platform.
PLC repair — other brands
Allen-Bradley PLC Repair — ControlLogix, CompactLogix, and Legacy Systems
Allen-Bradley (Rockwell Automation) PLCs — ControlLogix 5580/5570, CompactLogix 5380/5370, legacy PLC-5, SLC 500, and MicroLogix — represent the dominant automation platform in North American industry and hold significant market share in Europe. These controllers manage everything from simple standalone machines to enterprise-wide automation networks using EtherNet/IP and ControlNet communication. With decades of Allen-Bradley PLCs installed worldwide, repair demand spans multiple controller generations.
Common Allen-Bradley PLC failures include ControlLogix processor module memory corruption and firmware issues, CompactLogix embedded I/O point failures, PLC-5 processor battery-backed memory loss and power supply degradation, SLC 500 processor communication faults and rack power supply failures, and across all platforms — I/O module output transistor burnout, analog channel drift, and communication module EtherNet/IP PHY damage. Legacy PLC-5 and SLC 500 systems face accelerating component aging challenges.
At EFIXLAB, we repair all generations of Allen-Bradley PLCs. Our service covers processor module board-level diagnostics and repair, power supply rebuild, I/O module output driver replacement and analog calibration, communication module repair (EtherNet/IP, ControlNet, DeviceNet, DH+, DH-485), and legacy serial interface restoration. We test repaired modules with Rockwell RSLogix/Studio 5000 diagnostics and verify proper communication with other system components.
Allen-Bradley PLC repair is especially valuable for legacy PLC-5 and SLC 500 systems where Rockwell discontinuation has dramatically increased prices for remaining new-old-stock modules. Repair costs typically save 40–70%. For current ControlLogix and CompactLogix modules, repair offers 35–55% savings versus new module purchase. All Allen-Bradley repairs include functional testing and our 12-month warranty.