Application Scenarios
On a high-throughput automotive body shop line in Stuttgart, operators previously struggled with a familiar pain point: every time a mobile HMI panel was unplugged from one station and reconnected at another, the emergency-stop circuit had to be physically interrupted, triggering a brief but costly line hold. After deploying the 6AV2125-2AE23-0AX0 at each hand-off point, the facility leveraged its “reconnection without E-STOP circuit interruption” feature—available in both hardwired safety-relay mode and PROFIsafe-over-PROFINET mode. The box’s terminal-detection logic confirmed the panel was securely latched before releasing safety authority, while the integrated MRP client ensured the PROFINET ring reconfigured in milliseconds if a cable was pulled. Line supervisors reported zero nuisance trips during shift changes and a measurable improvement in OEE, since operators could roam freely between stations without ever compromising SIL 3 safety integrity.
h2 Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 6AV2125-2AE23-0AX0 |
| Manufacturer | Siemens (SIMATIC HMI) |
| Product Category | Advanced Connection Box for Mobile Panels (2nd Gen) |
| Supply Voltage | 24 V DC (19.2–28.8 V range) |
| Rated Current / Power | 95 mA / ~2.3 W typical |
| Industrial Ethernet Ports | 3 × PROFINET (integrated switch, IRT-capable) |
| Supported Protocols | PROFINET, PROFIsafe, TCP/IP, MODBUS, EtherNet/IP, IRT, MRP, DHCP, SNMP, DCP, LLDP |
| Safety Rating | SIL 3 (IEC 61508) / PLe (ISO 13849-1) |
| Protection / Mounting | IP65 all-round / Wall mounting (cabinet mount not supported) |
| Operating Temp / Humidity | 0 °C to +55 °C / max. 90 % RH |
| Dimensions (W × H × D) | 230 × 151.3 × 75.4 mm |
| Weight | 0.72 kg (without packaging) |
| Included Accessory | 2 GB Key-PLUG USB stick (enables SmartServer / Sm@rtClient on compatible panels) |
h2 Technical Principles and Innovative Values
Innovation Point 1: Active 3-Port Switch with IRT and MRP Client. Unlike a passive patch panel, the 6AV2125-2AE23-0AX0 integrates a managed Industrial Ethernet switch that supports IRT (Isochronous Real-Time) for motion-grade timing and acts as an MRP client for media-redundancy rings. If a PROFINET cable is damaged or unplugged during a panel handover, the ring reconverges automatically—critical for lines where even a few hundred milliseconds of network loss triggers a safety stop.
Innovation Point 2: Dual-Mode Safety Evaluation (Hardwired + PROFIsafe). The box can evaluate safety signals in two ways simultaneously: by direct wiring to a conventional safety relay (with E-STOP-circuit bridging logic), or purely over PROFINET via PROFIsafe telegrams. Both paths support reconnection without breaking the emergency-stop loop, and the 6AV2125-2AE23-0AX0 monitors STOP button, E-STOP button, and acknowledgment button states continuously, achieving SIL 3 / PLe without extra marshalling hardware.
Innovation Point 3: Key-PLUG Enabler and Web-Based Management. The shipped 2 GB Key-PLUG does more than store recipes—it unlocks the SmartServer and Sm@rtClient functions on a connected Comfort Panel, giving remote-maintenance access without separate licensing. Pair that with the box’s built-in web management interface (DHCP/DCP/LLDP/SNMP supported), and commissioning engineers can identify connection points, monitor port health, and diagnose topology right from a browser.
h2 Application Cases and Industry Value
A German system integrator retrofitting a series of batch-reactor skids for a specialty-chemical client chose the 6AV2125-2AE23-0AX0 to centralize three mobile KTP900F panels that roamed across six reactor zones. Before the upgrade, each zone had its own hardwired E-STOP daisy chain and a separate unmanaged 4-port switch—cabling alone consumed two full cable trays. By replacing the tangle with 6AV2125-2AE23-0AX0 units at each wall-mount point, the integrator cut field-wiring length by roughly 40 %, reused the existing PROFINET ring thanks to MRP client support, and pushed safety validation to SIL 3 via PROFIsafe. During FAT the client specifically praised the “terminal detection” LED logic—operators now see at a glance whether a panel is mechanically seated before the safety relay releases control authority. Post-go-live, the plant reported a 25 % reduction in panel-related troubleshooting tickets compared with the previous generation.
h2 Related Product Combination Solutions
To build a complete mobile-panel workstation around the 6AV2125-2AE23-0AX0, consider these Siemens companions:
- 6AV2124-0QC24-0AX0 – KTP1200F Mobile Panel (the most common F-series mobile HMI paired with this box).
- 6AV2124-0JC24-0AX0 – KTP900F Mobile Panel, compact form factor for tighter stations.
- 6AV2124-0GC24-0AX0 – KTP700F Mobile Panel, mid-size option for multi-skids.
- 6AV2181-4XP00-0AX0 – Standard (non-Advanced) Connection Box for Mobile Panels – choose this if PROFIsafe / IRT / MRP are not required and cost is the driver.
- 6AV2181-4XA00-0AX0 – Key-PLUG 2 GB (spare/replacement for the one included in the box).
- 6AV2125-2AE13-0AX0 – Earlier-gen Advanced Connection Box (V1); the 6AV2125-2AE23-0AX0 is its direct successor with expanded protocol support.
- 6GK5216-0BA00-2AC2 – SCALANCE X216 managed switch, often used upstream of the 6AV2125-2AE23-0AX0 in larger PROFINET topologies.
Reviews
There are no reviews yet.