Siemens 6ES7321-1FF01-0AA0 SIMATIC S7-300 Digital Input Module
The Siemens 6ES7321-1FF01-0AA0 is a high-reliability digital input module designed for the SIMATIC S7-300 PLC system. This module features 8 digital inputs specifically engineered to handle high-voltage AC signals (120V/230V AC). It is a critical component for industrial plants that require direct monitoring of high-voltage field devices, such as limit switches, sensors, and actuators, without the need for additional signal interposing.
Technical Specifications & Configuration
This SM 321 digital input module is built for seamless integration into the S7-300 backplane bus, providing robust optical isolation for system protection.
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Part Number: 6ES7321-1FF01-0AA0
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Input Type: Digital Input (DI) for AC signals.
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Channels: 8 inputs (galvanically isolated in groups of 2).
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Rated Voltage: 120V / 230V AC.
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Input Current: Typically 6.5 mA (120V) or 11 mA (230V).
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Front Connector: Requires a 20-pin front connector for wiring.
Key Benefits for Industrial Automation
The 6ES7321-1FF01-0AA0 stands out for its durability and ease of installation in standard control cabinets. By supporting direct 230V AC inputs, it simplifies the electrical design of the control system and reduces the number of components needed.
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Galvanic Isolation: High-level protection between the field signals and the PLC’s internal logic.
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Compact Design: Optimized for the S7-300 modular architecture, allowing for high-density I/O configurations.
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Industrial Compliance: Fully certified for use in diverse industrial environments, ensuring long-term operational stability even in high-interference areas.
Expert Commercial Support for Your Sourcing Needs
As a specialized distributor of Siemens industrial components, we focus on providing a reliable and efficient purchasing experience for maintenance and procurement teams.
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100% Genuine Siemens Product: We guarantee that every 6ES7321-1FF01-0AA0 module is an original, brand-new factory part.
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Commercial Guidance: Our sales team is ready to assist you with price quotations, lead times, and verification of the correct front connector accessories.
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Fast Global Shipping: We manage an agile logistics network to ensure your automation components reach your facility anywhere in the world.
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Ready-to-Ship Inventory: We maintain stock of critical S7-300 series components to help you avoid production delays.
