SD-I-U-PN - PROFINET Industrial Sensor Gateway IP67 - Modular Smart Factory Module

1. Product Overview

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The Schmersal SD-I-U-PN represents a technologically advanced Safety Door Switch engineered for demanding industrial environments requiring robust safety monitoring and seamless integration into modern network architectures. This device is constructed with a durable metal housing, rated at IP67 for exceptional protection against dust ingress and high-pressure water jets, ensuring reliable operation even in washdown areas or harsh factory settings. It incorporates both Normally Closed (NC) and Normally Open (NO) solid-state outputs within a single compact unit, providing versatile switching options essential for complex safety circuits. The defining feature of the SD-I-U-PN is its integrated IO-Link v1.1 communication interface and PROFINET connectivity via the integral PN coupler, enabling bidirectional data exchange, remote configuration, and detailed diagnostics directly onto higher-level control systems. This positions it as a core component for implementing Industry 4.0 concepts within safety functions.

​2. Key Technical Parameters

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The SD-I-U-PN operates within a standard control voltage range of 24V DC (±10%), making it compatible with most industrial control cabinets. Its IO-Link interface complies with v1.1 specification (COM2/3) and adheres to PROFINET standards for industrial Ethernet communication. The switch utilizes PNP solid-state outputs with short-circuit protection, configured as two independent channels (typically 1 NC + 1 NO or 2 NC). A highly visible LED indicator provides clear local status feedback regarding switch actuation and communication activity. Critically, the actuating heads are designed for a long operating life of 5 million cycles, featuring a reliable magnetic actuation principle with a robust switching distance of up to 8mm for the SD-I variant. Its robust design includes a metal actuator head, ensuring resilience against impact and mechanical stress common in manufacturing and material handling environments.

​3. Primary Applications and Use Cases

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The SD-I-U-PN finds essential application wherever safeguarding personnel from hazardous machine movements behind movable guards is a paramount concern. It is widely deployed in automated production lines, robotic cells, press machinery, packaging stations, and automated assembly systems. Its core purpose is to reliably detect the secured closed position of safety doors, access hatches, flaps, and gates. Upon detecting an unsafe opening, it immediately signals the machine's safety control system (via both the safety-rated NC channel and diagnostic data over IO-Link/PROFINET) to initiate a controlled stop or prevent a restart, preventing potentially dangerous machine operation. Its network capabilities are particularly valuable for larger installations or machinery requiring centralized monitoring of numerous access points, enabling quick identification of specific guard statuses and fault locations through the PLC or SCADA system, significantly reducing troubleshooting time.

​4. Product Advantages and Functional Benefits

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The SD-I-U-PN delivers significant competitive advantages by merging high-level safety performance with advanced networking intelligence. Its PROFINET integration eliminates the need for extra gateways or complex wiring for networked diagnostics, streamlining installation and reducing overall system costs associated with discrete wiring runs. The bidirectional IO-Link communication provides invaluable operational transparency, allowing remote reading of switch status, diagnostic messages (actuator presence, circuit faults), and simplified parameterization without needing physical access to the switch. Its robust IP67 housing and metal construction guarantee long-term reliability and minimize downtime in aggressive industrial conditions. The redundant contact configuration enhances safety integrity, enabling easy integration into Category 3 or 4 circuits per ISO 13849-1 for risk reduction. Furthermore, the extended switching distance of up to 8mm offers flexibility in mounting alignment and tolerance compensation, ensuring reliable guard detection despite minor positioning variations or vibrations.

​5. Advanced Functionality and Integration

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Functionally, the SD-I-U-PN operates by detecting the magnetic field from its corresponding actuator (AZ/AZM series) mounted on the movable guard. When the actuator is close enough (within the 8mm range), the switch is "closed," indicating a safe condition. Opening the guard moves the actuator away, causing the switch to transition, signalling the safety controller. Crucially, the IO-Link interface enhances this core safety function by providing rich diagnostic data: beyond just door status ("Open" or "Closed"), it can communicate diagnostic Trouble (D.T.) signals indicating issues like wire breakage, short circuit, or actuator misalignment/absence. This granular diagnostic capability feeds directly into the PROFINET network, enabling proactive maintenance scheduling, centralized monitoring on HMIs, and faster resolution of operational issues, thereby maximizing plant productivity and upholding stringent safety standards effectively.

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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