WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Managed Industrial Ethernet Switch |
| Model Designation | SCALANCE X212-2 |
| Copper Ports | 12 x 10/100 Mbps RJ45 (with securing collar) |
| Fiber Ports | 2 x 100 Mbps multimode BFOC/ST (100BaseFX) |
| Transfer Rate | 10 / 100 Mbit/s |
| Power Supply | 24 V DC (18…32 V), redundant capable |
| Power Loss | Approx. 7.92 W |
| Diagnostics | LED diagnostics, error signaling contact |
| Special Features | PROFINET IO device, integrated redundancy manager, network management |
| Mounting | DIN rail / wall |
| Protection Class | IP30 |
| Dimensions (W × H × D) | 120 × 125 × 124 mm |
| Net Weight | Approx. 1.2 kg |
| Ambient Temperature | –40 to +60 °C (operation) |
4. Product Introduction
The Siemens 6GK5212-2BB00-2AA3 is a SCALANCE X212-2 managed Industrial Ethernet switch. It provides 12 copper 10/100 Mbps RJ45 ports and 2 multimode fiber ports (100 Mbps BFOC/ST) for connecting industrial devices in PROFINET and standard Ethernet networks.
This compact managed switch supports network management functions, PROFINET IO device functionality, and an integrated redundancy manager. It is designed for use in control cabinets in manufacturing, process, and infrastructure applications where reliable, diagnosable Ethernet connectivity with fiber uplinks is required. Redundant 24 V DC power supply capability and an error signaling contact support high-availability installations.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No link on copper or fiber ports | Cable fault, wrong fiber type, or port disabled | ✅ High | Check link LEDs and cable/fiber type | Verify media and port configuration |
| Switch not reachable via network | IP configuration or management disabled | ✅ High | Check default IP or use STEP 7 / web interface | Reset or reconfigure management settings |
| Power LED off or fault indicated | Power supply issue or internal fault | ✅ High | Measure 24 V DC at terminals; check redundant feed | Verify power wiring and supply |
| Redundancy not working | Incorrect ring configuration or cable problem | ✅ High | Review redundancy manager status and topology | Correct ring ports and cable connections |
| High error rate or dropped packets | Noise, bad cable, or duplex mismatch | ✅ Medium | Check port statistics and cable quality | Replace suspect cables; force correct duplex |
| Error contact activated | Configured alarm or hardware fault | ✅ Medium | Review diagnostic LEDs and event log | Clear alarms or replace unit if hardware fault |
If problems continue, capture switch diagnostics/logs, photos of the unit and cabling, and contact technical support with the serial number and firmware version.
6GK5212-2BB00-2AA3
6GK5212-2BB00-2AA3
6. Frequently Asked Questions (FAQ)
Q: What is the 6GK5212-2BB00-2AA3?
A: It is a Siemens SCALANCE X212-2 managed Industrial Ethernet switch with 12 × 10/100 Mbps RJ45 ports and 2 × 100 Mbps multimode fiber (BFOC/ST) ports.
Q: Does it support PROFINET?
A: Yes. It functions as a PROFINET IO device and supports configuration via STEP 7 / TIA Portal.
Q: What type of fiber does it use?
A: Multimode fiber with BFOC (ST) connectors at 100 Mbps (100BaseFX).
Q: Can it be used with redundant power?
A: Yes. It supports redundant 24 V DC power supply connections.
Q: Is a C-PLUG required?
A: The C-PLUG is optional. It is used for configuration backup and device replacement without reconfiguration.
Q: Is this model still in active production?
A: The SCALANCE X-200 family has seen successive updates. Confirm current availability and whether a successor model is recommended for new installations. New surplus units remain available for existing systems.
Q: Why is surplus stock often less expensive?
A: New Surplus units are unused OEM material that never entered service—typically excess project inventory. They are functionally new but may lack the latest factory packaging or original manufacturer warranty paperwork. Every unit is tested and carries our warranty.
Q: How do you test these switches before shipping?
A: Each unit receives visual inspection, power-up verification, port link and traffic testing (copper and fiber), management interface check, and a short functional burn-in. Test documentation is available on request.
