Pilz PZE 9 24VDC 8N/O 1N/C Safety relay

Product Dimensions：

The Pilz PZE 9 24VDC 8 N/O 1 N/C (Part Number 774150) is a specific configuration of a safety relay expansion module from the PNOZ X series. Its primary function is to increase the number of available safety contacts for a primary safety-related control component (like a safety relay, safety light curtain, or safety controller).

Key Features

• Function: Contact expansion and amplification in connection with safety-related control components.

• Safety Category: The device itself is an expansion block, and its safety level is dependent on the base unit it is connected to.

• Inputs: Supports 1-channel or 2-channel wiring, with or without the capability to detect shorts across contacts in the input circuit.

• Housing: Compact, rail-mountable unit.

📋 Product Specifications (Technical Data)

✅ Product Advantages (Benefits)

• High Contact Capacity: The primary advantage is the expansion of safety outputs. With 8 N/O safety contacts, it can safely control a large number of downstream devices (e.g., contactors, valves) from a single base safety function.

• System Integration: Designed to work seamlessly with various Pilz safety base units (like PNOZ X, PNOZsigma, or safety controllers) via the feedback loop.

• Safety Reliability: As a component of a safety circuit, it is built to the high standards required for safety-related applications, ensuring reliable switching of safety loads.

• Short Detection: The input circuitry is capable of detecting short circuits across contacts, which is a crucial diagnostic feature for maintaining safety integrity.

• Versatile Input Wiring: Offers flexibility with both 1-channel and 2-channel input configurations to suit different safety requirement levels.

⚠️ Important Considerations (Notes)

• Installation/Wiring: Must be installed and wired strictly according to the official Pilz operating manual and relevant national/international safety standards (e.g., EN ISO 13849-1). Incorrect wiring can compromise the entire safety function.

• Base Unit Required: This is an expansion module, meaning it must be connected to a primary safety control component (the base unit) that handles the core safety function (e.g., E-STOP monitoring, safety gate monitoring). It does not perform the primary monitoring function itself.

• Feedback Loop: The base unit's safety function must monitor the PZE 9's contacts through a feedback loop (often monitored via the N/C auxiliary contact or a separate monitoring circuit) to ensure the contacts have opened correctly when required.

• Load Rating: Always ensure that the current and voltage of the devices being switched (the load) do not exceed the maximum ratings specified for the PZE 9's relay contacts.

⚙️ Product Applications

The Pilz PZE 9 expansion module is used in virtually all areas of industrial automation where a base safety function needs to switch multiple loads simultaneously.

• Safety Gate Circuits: To distribute the safety signal from a safety gate monitor (base unit) to several contactors or motor control circuits in a complex machine cell.

• E-STOP Circuits: When an Emergency Stop is triggered, the module provides enough contacts to simultaneously de-energize multiple drives, hydraulic valves, and other power sources.

• Light Curtain/Scanner Integration: Used to amplify the safe output signal from a safety light curtain or laser scanner to control multiple downstream safety outputs.

• Hydraulic/Pneumatic Control: To safely cut off the air or hydraulic supply to multiple moving parts or actuators after a safety command is initiated.

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