PILZ 541059 Output Point I/O Module

PILZ Contact Expansion Module Overview

PILZ Contact Expansion Modules are safety-rated devices primarily used to extend the output capacity of a base safety relay or a configurable safety system (like Pilz PNOZmulti or PNOZsigma). In safety-related applications, it's often necessary to control multiple safe outputs (e.g., safety gates, emergency stops, light curtains) from a single safety function. These expansion modules provide additional instantaneous or delayed safety contacts, allowing for complex safety architectures while maintaining high safety integrity.

Product Detailed Description

• Function:

• Increases Safety Contacts: The core function is to expand the number of safe normally open (NO) contacts, and sometimes normally closed (NC) auxiliary contacts, available from a safety circuit.

• Maintains Safety Level: They are designed to maintain the safety performance level (PL) or Safety Integrity Level (SIL) of the connected base unit. This means the overall safety function remains reliable even with expanded outputs.

• Monitoring: The output relays of the expansion module are typically monitored via the feedback loop of the base unit, ensuring that safety functions on the existing circuit are reliably transferred and maintained.

• Fault Detection: Many modules feature internal redundancy and self-monitoring to detect internal component failures or earth faults in the input/feedback circuits, leading to a safe state (de-energizing the safety outputs).

• Features:

• Modular Design: Easily connect to a base safety relay or configurable safety system via dedicated connectors or terminals.

• Various Contact Configurations: Available with different numbers of NO safety contacts and sometimes NC auxiliary contacts (e.g., 2 NO, 4 NO, 3 NO, with or without 1 NC).

• Safety Standards Compliance: Designed and certified to international safety standards such as EN ISO 13849-1 (Performance Level e, Category 4), IEC 62061 (SIL CL 3), and EN 60204-1.

• Supply Voltage Options: Commonly 24 V DC, but some models may offer AC/DC versatility.

• Terminal Types: Available with screw terminals or spring-loaded (push-in) terminals for flexible wiring.

• DIN Rail Mounting: Designed for easy and secure mounting on 35 mm DIN rails.

• LED Indicators: Often include LEDs for status indication (e.g., power, channel status) for quick diagnostics.

• Robust Housing: Industrial-grade housing material (e.g., PC) for durability in industrial environments.

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