Siemens 6ES74921AL001AB0

Technical Parameters

Signal Rate Adaptability

Supports 9.6 kbps to 12 Mbps PROFIBUS DP communication rates, auto-adapting to cable length limitations (up to 1,200m at 93.75 kbps).

Repeater Function Integration

Built-in signal amplification for daisy-chained networks exceeding32 devices, compensating for signal attenuation without external repeaters.

Fire Safety Compliance

Constructed withUL 94 V-0 flame-retardant housing, preventing combustion propagation in high-risk industrial settings.

Plug-and-Play Addressing

Supports automatic node addressing via DIP switch configuration, simplifying network expansion in modular systems.

Voltage Surge Protection

Integrated 4 kV surge suppression(IEC 61000-4-5) for data lines, protecting against lightning-induced transients.

Corrosion Resistance

Gold-plated contacts and nickel-plated housing resist oxidation in pH 2–12 chemical exposure environments.

Protocol-Specific Filtering

Embedded FDL (Fieldbus Data Link) filters to block non-PROFIBUS traffic, ensuring deterministic cycle times.

Key Features

Versatility and rugged design are also features of the Siemens 6ES74921AL001AB0:

Maximizes plaCE in control cabinets, reduCes wiring outlay 48-pole Screw Terminals: up to 84 signal modules/packaging unit The connector allows a high-density deployMENT of signal modules and keeps wiring effoRT low.

Rugged Construction: Designed for industrial usage, the connector is made from corrosion-resistant materials and secure clamping actions for long reliable use even in rough environment such as dusty or moisture facilities.

Plug-and-Play Ability: Quickly connect to Siemens SIMATIC S7-400 PLCs, streamlining setup so a new system can be up and running in no time.

Compatible Devices

The Siemens 6ES74921AL001AB0 interacts perfectly with Siemens automation components:

SIMATIC S7-400 PLCs: A dedicated front connector that mates to S7-400 CPU racks and digital/analog I/O modules, and the foundation for scalable automation systems.

HMI Panels and Drives: Interface with Siemens HMI Comfort Panels (TP1200, KTP900) and drives (e.g., PowerFlex 525) for live monitoring and control. This unification means that the second element systems are seamlessly in sync in terms of communication with all Siemens systems.

TIA Portal Software: Set-up and troubleshoot Siemens 6ES7492-1AL00-1AB0 using Siemens’ TIA Portal, the software that shortens time to market, offers new machine integrations, and opens up access to an entirely new level of productivity in industrial automation.

Practical Use Cases

The 6ES74921AL001AB0 Siemens for your automation needs:

Automotive Manufacturing: In automotive body assembly lines, sensors and actuators are connected to S7-400 PLCs through this connector to control robotic arms and conveyor systems accurately. The AccuCUT provides maximum reliability and eliminates downtime in 24/7 production environments.

Energy Management Systems: Installed in substations, the Siemens 6ES74921AL001AB0 allows data communication between power meters, circuit breakers, and SCADA, so as to enable stable grid and fault diagnosis.