Repair
Siemens Simoreg
Simoreg 6RA70 (EOL) · 6RA80 · DC Drives
Repair of Siemens Simoreg DC drives — 6RA70 (EOL), 6RA80. Thyristor replacement, capacitors, CUD/CUA board repair.
Diagnostics included in repair
No-obligation quote
12-month warranty
Courier pickup from all of Europe
Post-repair testing
Service Siemens Simoreg — repair scope
Power section
IGBT, capacitor, rectifier, and power module replacement.
Control boards
CPU, flash memory, and communication circuit repair.
Interfaces and communication
Profibus, Profinet, EtherCAT, CAN port repair.
power supplies
Power supply circuit, DC/DC converter, and voltage regulator repair.
Mechanics and cooling
Fan, thermal paste, and gasket replacement.
Functional testing
Load testing, parameter verification, and test protocols.
Why EFIXLAB for repair of Siemens Simoreg?
- Experience — years of practice servicing Siemens Simoreg.
- EOL Devices — we repair discontinued devices.
- Load testing — every device is bench-tested before shipping.
- Fast turnaround — diagnostics up to 5 business days, repair 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 all performed work.
- Courier shipping — pickup and delivery from all of Europe.
Repair Siemens Simoreg: from request to collection
Request
online or by phone
Shipping
by courier
Diagnostics
included in repair
Quote
& approval
Repair
& testing
Return
with warranty
Report fault Siemens Simoreg — no-obligation quote
Provide the device model Siemens Simoreg and fault description.
Dziękujemy! We have received your request — we will get back to you shortly with a quote and timeline.Frequently asked questions
Repair cost is typically 20–60% of the price of a new device. We send a quote within 24h.
Diagnostics: up to 5 business days. Repair: 5–7 business days after quote approval and receiving necessary components. As a rule — repair time may be significantly extended depending on component availability and repair complexity. Deadlines are agreed individually with the client.
Yes — we specialize in repairing devices no longer available from the manufacturer.
By courier to our Warsaw address. Secure packaging required.
Siemens SIMOREG DC Drive Repair — 6RA70 and 6RA80 Series
Siemens SIMOREG DC drives — 6RA70 (SIMOREG DC Master) and 6RA80 (SIMOREG DC Master Series) — control DC motors in applications requiring precise speed and torque regulation: steel rolling mills, paper machines, wire drawing, printing presses, and winding systems. DC drive technology remains relevant for these applications due to the excellent torque characteristics of DC motors and the enormous installed base of DC motor driven machinery that would be extremely costly to convert to AC drive systems.
Common SIMOREG failures include thyristor (SCR) degradation in the power converter bridge, firing pulse circuit failures, current transformer drift affecting speed regulation, control board (CUD1/CUD2) processor and memory faults, communication module failures (CBP2 PROFIBUS, CBE20 Ethernet), and DC bus monitoring circuit issues. The 6RA70 series, being older, faces more component aging challenges including electrolytic capacitor dry-out and snubber circuit component failures. The 6RA80 series is more modern but still develops thyristor and control board issues over time.
At EFIXLAB, we repair both SIMOREG series at the component level. Our service covers thyristor testing and replacement, firing circuit diagnostics and repair, current transformer calibration, CUD board component-level repair, communication module restoration, and complete DC drive testing. We verify proper speed regulation, current limiting, and field weakening operation under motor load conditions.
SIMOREG repair is essential for process industries running DC motor applications — converting to AC drive systems would require new motors, drives, and extensive mechanical modifications. Repair saves 40–60% versus replacement pricing. All SIMOREG repairs include motor load testing and our 12-month warranty.