Description

The Pilz 311041 is a PNOZ s7 Configurable Safety Relay designed for flexible implementation of safety functions up to SIL 3 (IEC 62061) and PLe (ISO 13849-1). Part of Pilz’s renowned PNOZsigma series, this module integrates complex safety logic—including emergency stop monitoring, safety gate control, and two-hand operation—into a single compact device. The Pilz PNOZ s7 311041 features 14 safety inputs (supporting OSSD signals, contacts, and solid-state devices) and 4 safe semiconductor outputs, enabling direct control of safety contactors or valves without additional relays. Its intuitive PNOZmulti Configurator software allows drag-and-drop function block programming, reducing commissioning time by 70% compared to hardwired solutions. Engineered for harsh industrial environments, the module operates at –25°C to +55°C with 100 kV/μs surge immunity, ensuring reliable performance in automotive, packaging, and robotics applications where functional safety is non-negotiable.

Technical Specifications

Main Features and Advantages

Flexible Safety Logic: Configure up to 8 independent safety functions (e.g., E-stop chains, light curtains, muting) via PNOZmulti Configurator without coding. Pre-certified function blocks ensure compliance with global standards.

Integrated Diagnostics: Real-time fault localization via LED indicators and software. Event logging captures last 10 faults with timestamps, accelerating troubleshooting for reduced MTTR.

Seamless Expansion: Connect PNOZ s8 I/O modules (Pilz 311110) via secure FSoE (FailSafe over EtherCAT) for distributed safety systems across large machinery.

Cyber-Resilient Design: Password-protected configurations with audit trails. Firmware signature verification prevents unauthorized updates.

Application Field

The Pilz 311041 safeguards high-risk machinery:

Automotive: Monitors robotic cell access gates and E-stops in welding lines, ensuring SIL 3 compliance for human-robot collaboration.

Packaging: Controls safety interlocks on palletizers and wrapper machines, integrating muting for sensor bypass during material transfer.

Press Brakes: Implements two-hand control (Type III) and footswitch monitoring for metal forming equipment (ANSI B11.3).

Material Handling: Manages AGV safety fields via laser scanner inputs and safe stop outputs.

Related Products

Pilz 311110 (PNOZ s8 8DI): 8-channel safe input module – Expands 311041 capacity.

Pilz 311040 (PNOZ s7 Basic): Entry-level variant – Fewer I/O points.

Pilz 750104 (PITmode): Operator terminal – Configures 311041 parameters locally.

Pilz 301400 (PSENcode): Safety door switch – Integrates with 311041 for access control.

Pilz 104607 (PNOZ X2.8P): Compact safety relay – For simple backup circuits.

Installation and Maintenance

Pre-installation preparation: Verify DIN rail (EN 60715) grounding (<0>PNOZmulti Configurator offline. Assign unique device names for networked systems. Validate voltage stability (24V DC ±10%).<!--0-->

Maintenance recommendations: Quarterly functional testing of all safety chains. Monitor output LEDs for fault indications. Backup configurations after changes. Update firmware during planned shutdowns using Pilz’s PMI tool. Replace every 10 years or per machine risk assessment.