PILZ A.F.051.501 08.04 Security extension module
Specific Parameters
Electrical Parameters
Power Supply: 24V DC (±10% fluctuation tolerance), powered by the PNOZ host via a dedicated interface, no independent power supply requiredSafety Input Channels: 8 safety inputs (dry contacts, compatible with passive safety sensors)Safety Output Channels: 4 safety outputs (dual-loop redundant design, contact type SPDT, contact rating 250V AC/6A)Response Time: Total safety loop response time ≤10ms, ensuring rapid shutdown of the control loop under hazardous conditionsDiagnostic Functions: Supports input loop open/short circuit detection, fault signals fed back to status indicators via the hostInsulation Class: Withstand voltage ≥2500V AC (1 minute) between power and signal terminals, insulation resistance ≥100MΩSafety Certifications: Complies with IEC 61508 SIL 3, EN 954-1 Cat.4 safety standards
Mechanical Parameters
Overall Dimensions: 70mm (L) × 17.5mm (W) × 120mm (H), complying with PNOZ series module standard dimensionsHousing Material: Flame-retardant engineering plastic (UL94 V-0 grade), anti-static coating on surfaceWeight: Approximately 0.2kgMounting Method: 35mm DIN rail mounting, supporting dense arrangement, occupying 1 standard rail unitConnection Method: Plug-in spring terminals, wire gauge 0.5-1.5mm², supporting quick wiring and replacementStatus Indication: 8 input channel LED indicators (green: channel active), 2 system LED indicators (yellow: module ready; red: fault alarm)
Environmental Parameters
Operating Temperature: -10℃ to +60℃ (non-condensing environment, suitable for high and low temperature working conditions in industrial workshops)Storage Temperature: -25℃ to +85℃Relative Humidity: 5% to 95% (non-condensing, compliant with IEC 60068-2-3 standard)Vibration Resistance: 10-500Hz frequency range, 1g acceleration (sine wave), 30 minutes of continuous testing per axisEMC Compliance: Meets EN 55022 Class A (emission limits) and EN 55024 (immunity) standards, electromagnetic interference resistance meets industrial on-site requirements
Product Performance
High safety reliability: Complies with the highest safety level of SIL 3/EN 954-1 Cat.4, dual-loop redundant output design avoids single-point failures, ensuring 100% reliable shutdown of the safety loop under hazardous conditions.
Strong expansion capability: A single module provides 8 inputs/4 outputs, and multiple modules can be cascaded via the host, supporting up to 32 safety inputs and 16 safety outputs, adapting to complex safety control needs.
Convenient wiring and maintenance: Plug-in spring terminals allow wiring without tools, channel-level LED indicators intuitively display working status, and fault diagnosis functions can quickly locate open/short circuits, with maintenance time ≤10 minutes.
High system compatibility: Directly compatible with PNOZ s, PNOZ X and other full-series safety relay hosts, no custom adapters required, ready for use after wiring, and supports seamless matching with PILZ safety sensors (such as PSEN safety door switches).
Excellent operational stability: Industrial-grade components and wide-voltage power supply design ensure a mean time between failures (MTBF) of ≥300,000 hours, enabling stable operation in harsh industrial environments such as dust and oil pollution.
















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