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

PZE 9 24VDC 8N/O 1N/C PILZ Safety Relays

Brand：PILZ Model number：PZE 9 24VDC 8N/O 1N/C

Country of origin: Germany Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

The PZE 9 is not a standalone safety relay but an expansion module that is driven by a primary (base) safety relay or a programmable safety system (like PNOZmulti) that includes a feedback loop. Its primary function is to multiply the safe switching capacity of the base unit to control multiple actuators, contactors, or other loads in the safety circuit.

Function: Contact Expansion and Amplification.
Input Operation: Supports 1-channel or 2-channel wiring with the ability to detect shorts across contacts when connected to a compatible base unit.
Outputs: It provides eight Normally Open (N/O) safety contacts for switching off power to machinery and one Normally Closed (N/C) auxiliary contact typically used for non-safety-related status monitoring (e.g., signaling to a standard PLC).
Base Unit Requirement: It must be used in connection with a safety-related control component (base unit) that monitors a safety function (like E-STOP or safety gate) and includes a feedback loop.

Product Specifications

Model Number: PZE 9 24VDC 8N/O 1N/C (Pilz Part Number: 774150)
Supply Voltage (UB): $24 \text{ VDC}$
Power Consumption: Typically $3.5 \text{ W}$ DC
Safety Contacts: 8 N/O (Normally Open)
Auxiliary Contacts: 1 N/C (Normally Closed)
Contact Rating (Safety Contacts): Max. current up to $8 \text{ A}$ at $240 \text{ V AC}$ (AC1) / $8 \text{ A}$ at $24 \text{ V DC}$ (DC1)
Terminal Type: Screw terminals (fixed style)
Dimensions (W x H x D): $90 \text{ mm} \times 87 \text{ mm} \times 121 \text{ mm}$
Approvals: Meets international safety standards including CE, cULus Listed, TÜV, and EN/IEC standards (e.g., EN 60204-1, EN ISO 13849-1, EN 62061).
Climatic Suitability: Ambient temperature range of $-10 \text{ to } 55 \text{ °C}$ .

Product Advantages

Increased Flexibility and Capacity: It dramatically increases the number of available safety outputs from a single base unit, allowing one safety function (like pressing an E-STOP) to safely disconnect power to many different final elements or control zones.
High Reliability: As a component of the Pilz PNOZ X family, it incorporates reliable safety relay technology with internal monitoring capabilities, helping to ensure the safety function remains effective even in the event of component failure.
Diagnostics: Features LED indicators for power and channel status, aiding in quick diagnosis of operational status or faults in the safety circuit.
Safety Integrity: The design ensures that if a fault occurs (such as an earth fault in the input circuit or short across contacts), the module will de-energise the relays, opening the safety contacts and maintaining the machine's safe state.

Important Considerations (Precautions)

Not a Base Unit: The PZE 9 is an expansion module and cannot be used alone to monitor a safety function. It must be connected to a qualified base unit (safety relay or controller) with a monitored feedback loop.
Commissioning Check: After initial commissioning and after any changes to the machine's safety circuit, a check must be performed by qualified personnel to ensure the safety contacts open correctly.
Environmental Limits: The module must be installed in an environment that complies with the specified temperature and humidity limits (e.g., condensation is not permitted) and is typically mounted inside a protective enclosure.
Wiring Integrity: All wiring must comply with electrical codes and the module's specifications, paying careful attention to proper routing and securing of all safety circuit wires.
Manual Testing: To meet high safety integrity levels (like PL e/SIL CL 3), the base unit's output, and therefore the expansion module's contacts, must be opened and checked at specified intervals (e.g., at least once per month for PL e/SIL CL 3).

Product Applications

The PZE 9 24VDC 8N/O 1N/C is primarily used in industrial automation and machinery to amplify and distribute the safety signal from a single point of monitoring across a complex machine or system.

Emergency Stop Systems: Used when an E-STOP button needs to simultaneously switch off power to multiple motors, drive systems, and control circuits spread across a large machine.
Safety Gate Monitoring: Expanding the output of a safety gate monitoring relay to reliably isolate power to all potentially hazardous movements when the gate is opened.
Safety Light Curtain/ESPE Applications: Used with light curtain or other Electro-Sensitive Protective Equipment (ESPE) relays to control a large number of final switching elements (contactors) that are responsible for removing hazardous energy.
General Safety Circuit Expansion: In any application where the number of safety outputs provided by the base safety device is insufficient for the machine's complexity.

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