Siemens A5E00105203 / A5E00081513 Mainboard | Replacement, Equivalent & Selection Guide
The Siemens A5E00105203 (also referenced as A5E00081513) is the core control mainboard for the SIEMENS MASTERDRIVES series of AC/DC variable-speed drives. This board governs closed-loop vector control, communication interfaces, and I/O coordination — making it the most critical spare part in any MASTERDRIVES-based drive system. Whether you are sourcing an OEM replacement, evaluating a compatible equivalent, or selecting the right board for a retrofit project, this guide provides the technical depth you need.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (Primary) | A5E00105203 |
| Part Number (Alternate) | A5E00081513 |
| Manufacturer | Siemens AG |
| Product Family | MASTERDRIVES MC / VC |
| Board Type | Control Mainboard (CU Board) |
| Applicable Drive Series | 6SE70 MASTERDRIVES |
| Control Mode | Vector Control (VC) / Motion Control (MC) |
| Communication | PROFIBUS DP, USS, Serial |
| I/O | Digital & Analog I/O (drive-dependent) |
| Firmware Compatibility | MASTERDRIVES firmware V3.x / V4.x |
| Weight | approx. 13.6 kg (packaged) |
| Condition Available | New OEM / Tested Refurbished |
Compatible Replacement & Equivalent Models
When the original A5E00105203 is unavailable or discontinued, the following models may serve as functional equivalents depending on your drive variant and firmware version. Always verify hardware revision and firmware compatibility before substitution.
- A5E00081513 — Alternate Siemens part number; functionally identical in most 6SE70 applications
- 6SE7090-0XX84-0AB0 — MASTERDRIVES CU board for VC variant; confirm drive rating before use
- 6SE7090-0XX84-0FF0 — MC variant CU board; suitable for motion-control applications
- A5E00105204 — Revised BOM variant; check PCB revision marking before ordering
- Third-party remanufactured boards — available from certified repair centers; require firmware re-flashing
Note: Cross-referencing must be validated against your drive’s nameplate data and Siemens spare-parts catalog. Contact Konmask for pre-sales compatibility verification.
Why Choose the Original Model
- Guaranteed firmware compatibility — OEM boards ship with factory-validated firmware; no re-flashing required
- Full I/O integrity — All analog/digital channels calibrated to Siemens factory tolerances
- Warranty-backed — Eligible for Siemens service warranty when sourced through authorized channels
- Zero integration risk — Drop-in replacement with no parameter re-mapping or hardware modification
- Long service life — Industrial-grade components rated for continuous 24/7 operation in harsh environments
Typical Applications
- Steel & Metal Processing — Rolling mills, winding/unwinding lines, tension control systems using MASTERDRIVES VC
- Paper & Printing — Web tension control, dryer section drives, register control
- Crane & Hoist Systems — Overhead cranes, port gantry cranes requiring precise torque control
- Plastics Extrusion — Extruder main drives, haul-off units, winder/unwinder stations
- Mining & Bulk Material Handling — Conveyor drives, crusher drives, bucket elevators
- Marine & Offshore — Thruster drives, winch systems, deck machinery
- OEM Machine Builders — Retrofit and spare-part stocking for installed MASTERDRIVES base
System Compatibility
| Drive Series | Compatible | Notes |
|---|---|---|
| 6SE70 MASTERDRIVES VC | ✅ Yes | Primary target platform |
| 6SE70 MASTERDRIVES MC | ✅ Yes (MC variant) | Confirm MC/VC board suffix |
| 6SE70 MASTERDRIVES FC | ⚠️ Partial | FC uses different CU board family |
| SINAMICS G120 / S120 | ❌ No | Different architecture; not interchangeable |
| SIMOREG DC-MASTER | ❌ No | DC drive platform; separate board family |
Selection Guide
Use the following decision tree to select the correct board for your application:
- Identify your drive model — Read the 6SE70-XXXXXXX nameplate on the drive cabinet
- Determine control mode — VC (Vector Control) or MC (Motion Control); check existing CU board label
- Check firmware version — Access via drive keypad (P060 / r069); confirm compatibility with replacement board
- Verify hardware revision — PCB revision is printed on the board edge; A5E00105203 Rev.A/B/C are typically cross-compatible
- Confirm I/O requirements — Count digital inputs/outputs and analog channels needed by your application program
- Contact Konmask — Provide nameplate data for final confirmation before ordering
Quality Assurance & Sourcing
- All boards undergo functional power-on testing prior to shipment
- OEM-new units supplied in original Siemens ESD packaging with traceability documentation
- Refurbished units include 90-day tested warranty with full I/O verification report
- Sourced from authorized Siemens distributors and certified industrial surplus channels
- Export-compliant documentation available for international shipments
How to Order
- Add to cart directly, or contact us for volume pricing and lead-time confirmation
- Provide your drive nameplate data (model number, serial number, firmware version) for compatibility verification
- Specify condition preference: New OEM or Tested Refurbished
- Request datasheet, test report, or certificate of conformity if required
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Is A5E00105203 the same as A5E00081513?
A: They are closely related part numbers within the same MASTERDRIVES CU board family. In most 6SE70 applications they are interchangeable, but hardware revision and firmware version must be verified for your specific drive unit.
Q: Can I use a SINAMICS S120 CU board as a replacement?
A: No. SINAMICS S120 uses a completely different hardware and firmware architecture and is not compatible with MASTERDRIVES 6SE70 drives.
Q: Do I need to re-parameterize after replacing the mainboard?
A: Yes. Drive parameters are stored on the CU board (or optional memory card). Back up parameters via the keypad or DriveMonitor before replacement, then restore after fitting the new board.
Q: What is the lead time for new OEM units?
A: Stock items ship within 1–3 business days. Non-stock OEM orders typically require 2–6 weeks. Contact us for current availability.
Q: Do you provide installation support?
A: Yes. Konmask provides remote technical guidance for board replacement and parameter restoration. Contact our engineering team via email or phone.
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Contact: support@konmask.com | +0086 19859288691
