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Safety Relay Evaluation Unit RLY3-EMSS300 | SIL 3 Certified | Category 4 Compliance | by SICK
The Safety Relay Evaluation Unit RLY3-EMSS300 is designed for high-integrity safety monitoring in industrial applications. With SIL 3 certification and Category 4 compliance, it ensures reliable operation with features like discrepancy monitoring and a response time of just 12 ms. Ideal for safety sensors with potential-free outputs, this unit is built for professionals seeking robust safety solutions.
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Technical Specifications
- Safety integrity level: SIL 3 (IEC 61508)
- Category: Category 4 (ISO 13849-1)
- Performance level: PL e (ISO 13849-1)
- Mean probability of dangerous failure per hour (PFHD): 1.0 x 10^-9
- Mission time: 20 years (ISO 13849-1)
- Stop category: 0 (IEC 60204-1)
- Inputs: 2 safety inputs, 1 input for reset pushbutton or EDM
- Outputs: 3 enabling current paths (safe), 2 application diagnostic outputs (not safe), 3 test pulse outputs (not safe)
- Voltage supply: PELV or SELV, 24 V DC (16.8 V to 30 V)
- Power consumption: ≤ 2.5 W
- Response time (enabling current paths): 12 ms
- Contact material: Silver alloy, gold flashed
- Switching voltage: 10 V AC to 230 V AC / 10 V DC to 230 V DC
- Switching current: 10 mA to 6 A
- Total current: 12 A
- Mechanical life: 10 million switching cycles
- Enclosure rating: IP20 (IEC 60529)
- Operating temperature: -25 °C to +55 °C
- Storage temperature: -25 °C to +70 °C
- Air humidity: ≤ 95%, non-condensing
- Dimensions (H x L x W): 124.6mm x 85.5mm x 18mm
- Weight: 0.15 kg
Key Features
- Compatible with safety sensors with potential-free outputs
- Safety integrity level SIL 3 (IEC 61508)
- Category 4 (ISO 13849-1) safety standard
- Performance level PL e (ISO 13849-1)
- Discrepancy monitoring and cross-circuit detection
- Restart interlock and automatic/manual reset
- External device monitoring (EDM)
- Front connector with spring terminals
- 3 enabling current paths (safe) and multiple diagnostic outputs
- LED display elements for status indication
- Hard wired configuration method
- 24 V DC supply voltage with low power consumption (≤ 2.5 W)
- Response time for enabling current paths: 12 ms
- Silver alloy, gold flashed contacts with high mechanical life
- IP20 enclosure rating suitable for industrial environments
- Wide ambient operating temperature range from -25 °C to +55 °C
Professional Installation Requirements
- Installation should be performed by a qualified professional familiar with safety relay systems and relevant safety standards.
Applications
- Evaluation unit for safety sensors with potential-free outputs
Standards & Compliance
- AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
- Low power consumption reduces energy usage
- Long mechanical life minimizes waste and replacement frequency
Warranty Information
Standard manufacturer warranty applies; please refer to SICK for detailed warranty terms.
Available Now
The SICK RLY3-EMSS300 Safety Relay Evaluation Unit is available for immediate purchase, ideal for industrial safety applications requiring high integrity safety monitoring.
