Product Short Description
Product Name: PNOZ sigma Series Safety Relay
Product Introduction: The 311041 is a compact safety relay from the PILZ PNOZ sigma series, monitoring emergency stop circuits, safety gates and light curtains, and providing force-guided safe disconnection of hazardous machine functions.
Technical Specifications:
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Supply Voltage: 24 VDC
Description
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Current Consumption: ≤ 50 mA (no load)
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Safety Inputs: 2 semiconductor inputs (S11/S12, S21/S22)
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Safety Outputs: 2 change-over (N/O) relay contacts, 1 PNP semiconductor output
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Max. Switching Voltage: 230 VAC/DC
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Max. Switching Current: 6 A
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Response Time: ≤ 15 ms (typical)
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Safety Level: Category 4 (EN ISO 13849-1), PL e, SIL 3 (IEC 61508 / IEC 62061)
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MTTTFd: 100 years (per EN ISO 13849-1)
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Dimensions: 22.5 mm × 99 mm × 114 mm
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Protection Class: IP20
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Operating Temperature: -25°C to +55°C
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Mounting: 35 mm DIN rail
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Indicators: LEDs for power, fault, channel 1, channel 2
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Certifications: CE, UL, CSA, TÜV, RoHS
Functional Features:
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Dual redundant safe outputs for reliable machine shut-down
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Flexible input configuration for E-stop, safety gates, light curtains
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Compact space-saving design for crowded control cabinets
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Integrated diagnostics via LEDs
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Low power consumption
Application Scenarios: Emergency stop circuits, safety gate monitoring, light curtain integration, two-hand control on presses and robot cells, packaging machines, conveyors, automation lines.
Installation & Notes: DIN-rail mount in a control cabinet (IP20 – not for direct exposure). Wire safety inputs per the PNOZ sigma manual; ensure the supplied voltage is within 24 VDC nominal. Perform periodic functional testing. Replacement requires matching the exact input/output configuration.
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