SIEMENS 6AV6671-5AE10-0AX0

What is 6AV6671-5AE10-0AX0 and where is it used?

The 6AV6671-5AE10-0AX0 is a Siemens DP Plus Connection Box for Mobile Panels (MPI/PROFIBUS). It serves as the fixed interface between the mobile operator device, power supply, process data communication and safety-related signals. As such, it is relevant wherever operators need to work directly at a machine, production line or manufacturing cell rather than solely from a stationary control cabinet, enabling them to commission equipment, perform setup tasks and diagnose faults on site. In installations with multiple connection points, the box is also valuable within zoned machine concepts, as Siemens describes the use of several connection boxes to divide systems into different functional areas. The component is therefore particularly important for maintenance, retrofit projects and spare-parts stockholding in existing MPI/PROFIBUS environments.

Overview of the key technical specifications and what they mean

Technically, the connection box operates on 24 V DC, with a permissible range of 20.4 to 28.8 V DC. Current consumption is 0.5 A, while typical power consumption is 12 W. On the communication side, RS232, RS422 and RS485 interfaces are available, with RS485 supporting up to 12 Mbit/s. In practice, this means that the unit is specifically designed for industrial communication environments and established PROFIBUS/MPI architectures. Additional specifications include IP65 protection, an operating temperature range of 0 to 50 °C, a storage and transport temperature range of -20 to 70 °C, 85% relative humidity, dimensions of 160 × 120 × 70 mm, and a weight of approximately 0.4 kg. For safety-related applications, important features include location identification, emergency-stop monitoring, hot-plugging without interrupting the emergency-stop circuit, and the Siemens-specified maximum cable length of 30 m for the emergency-stop and enabling circuits.

Product status, life-cycle status and obsolescence

For procurement purposes, the product status is particularly important. The EICHLER product page lists the component with EOP status effective from 01 October 2021. Siemens currently continues to classify the 6AV6671-5AE10-0AX0 as a spare part and documents its transition to P.M410 status from 01 October 2021. Current Siemens status documentation additionally indicates a planned transition to P.M490 status on 01 October 2026. For operators, this means the component should clearly form part of an active obsolescence management strategy. Of particular relevance is the fact that Siemens does not identify a verified migration path to the KTP Mobile range within its release documentation. Consequently, no officially confirmed direct successor has been specified. For this reason, repair, exchange services, tested used equipment and strategic stockholding are key measures for ensuring the continued operation of existing installations.

Available EICHLER services and when they are relevant in practice

For industrial users, four service options are particularly relevant for this product: repair, exchange, used equipment and new units on request. For repairs, EICHLER specifically includes technical cleaning, preventive maintenance, comprehensive functional testing and a minimum 24-month warranty. This approach is particularly advantageous when the connection box is already mechanically and electrically integrated into the machine and a rapid return to service is more important than a design modification. Exchange units and tested used devices are especially beneficial where downtime costs are high and a functioning replacement is required quickly. New units may be preferable where documented spare-part quality and a defined equipment condition are the highest priorities. From the perspective of maintenance, procurement and production teams, these options help secure operational reliability despite the product's end-of-production status and minimise unplanned downtime.

Is 6AV6671-5AE10-0AX0 still available as a new product, or only as a spare part?

Siemens currently lists the 6AV6671-5AE10-0AX0 as a spare part, while EICHLER additionally offers repair, exchange, used and new units as procurement or service options. In practice, this means that anyone requiring a replacement at short notice should not focus solely on sourcing a factory-new original unit, but should also consider exchange solutions, tested used components and repair services. Particularly in older Mobile Panel installations, these options are often the faster and more economical way to minimise machine downtime.

Is there a direct Siemens successor for the 6AV6671-5AE10-0AX0?

The Siemens release and migration documentation does not identify a migration path to KTP Mobile devices for this product. Consequently, no verified direct successor has been designated that would allow existing MPI/PROFIBUS-based systems to be replaced without further consideration. For operators, this is an important point: rather than relying on a presumed one-to-one successor, it is generally more effective to secure the availability of the existing installation and only develop a complete migration strategy for HMI, communication and safety functions as part of a larger modernisation project.

What does the Plus version of this Connection Box provide?

The Plus version is intended for applications where, in addition to standard connectivity, safety-related signals are required. Siemens describes a STOP circuit pass-through using four relays, while EICHLER highlights features such as STOP button monitoring and reconnection without interrupting the emergency-stop circuit. For operators, this means that the box is not merely a mechanical connection point but an active component of the machine's safety architecture surrounding the Mobile Panel. This distinction is particularly important during setup operations, maintenance work and zone-based machine concepts, where it offers significant advantages over the simpler Basic variant.

Which power supply and environmental conditions must be considered?

The key requirements are a 24 V DC nominal supply voltage, a permissible range of 20.4 to 28.8 V DC, IP65 protection, an operating temperature range of 0 to 50 °C, and correct equipotential bonding. Siemens also specifies the use of shielded standard cables and defines a connection sequence in which the equipotential bonding conductor is connected first, followed by the power supply. These requirements are more than formalities: even minor deviations in voltage level, wiring or reference potential can result in communication faults, operational failures or, in the worst case, damage to interface components.

When is repair more economical than immediate replacement?

A repair is particularly advantageous when the connection box is already mechanically integrated into the installation, no direct manufacturer successor is available, and the existing machine architecture is intended to remain unchanged. In such cases, the effort required for rewiring, validation and recommissioning is usually lower than that associated with a larger system modification. According to the product information, EICHLER combines its repair service with technical cleaning, preventive maintenance, comprehensive functional testing and a minimum 24-month warranty. However, when every hour of downtime is costly, an exchange unit or a tested used device may be the more suitable option.

Can I use multiple Connection Boxes within the same installation?

Yes. Siemens describes the use of multiple Connection Boxes to divide a machine or production system into different zones or functional areas. At the same time, Siemens specifies that only one type of Connection Box should be used within the monitored system. In practice, this means that multiple boxes are useful for creating a clearly structured operator concept, while the overall system architecture should remain consistent. This is particularly important when enabling functions, STOP-circuit evaluation and clearly defined service procedures must operate reliably across several connection points.