Safety Gate Monitoring Solution – PILZ PNOZ 11 | PNOZ Classic Series
The PILZ PNOZ 11 is a dedicated safety gate monitor relay from the PNOZ Classic series, engineered to provide reliable dual-channel monitoring of interlocked safety gates, light curtains, and emergency stop circuits in industrial machinery. Trusted by machine builders and safety engineers worldwide, the PNOZ 11 delivers deterministic, fail-safe switching performance in demanding production environments.
Where This Product Is Used
The PNOZ 11 is specified wherever personnel access to hazardous machine zones must be controlled and monitored with certified functional safety:
- Robotic work cells – Monitors interlocked access doors on robot enclosures; cuts power to the robot controller upon gate opening.
- Press and stamping lines – Provides dual-channel gate monitoring to prevent die-area access during the press stroke cycle.
- Conveyor and material handling systems – Monitors maintenance access hatches and perimeter guarding on automated conveyor lines.
- Packaging machinery – Integrates with interlocked guards on form-fill-seal and cartoning equipment.
- CNC machining centers – Monitors enclosure doors to prevent spindle or axis motion while the door is open.
- Palletizing and depalletizing cells – Ensures safe zone entry for operators during pallet change cycles.
- Food and beverage processing – Stainless-compatible panel mounting for washdown-adjacent control cabinets.
- Automotive assembly lines – Widely deployed in Tier 1 and OEM facilities for perimeter guarding of transfer lines.
Technical Specifications
- Model: PNOZ 11
- Manufacturer: PILZ GmbH & Co. KG
- Function: Safety gate monitor, dual-channel
- Supply Voltage: 24 V DC / 24–240 V AC (variant dependent)
- Safety Outputs: 3 NO safety contacts + 1 NC auxiliary contact
- Performance Level: PLe / Category 4 per EN ISO 13849-1
- Safety Integrity Level: SIL 3 per IEC 62061
- Response Time: ≤ 20 ms
- Contact Rating: 6 A / 250 V AC
- Mounting: DIN rail (35 mm)
- Housing Width: 22.5 mm
- Weight: 268 g
- Operating Temperature: −10 °C to +55 °C
- Protection Class: IP40 (terminal area)
- Approvals: CE, UL, cUL, BG, TÜV
Why Engineers Specify This Model
- Proven PLe / Cat.4 architecture – Dual-channel input monitoring with cross-fault detection satisfies the highest performance level required by EN ISO 13849-1 for Category 4 safety functions.
- Manual or automatic reset – Configurable reset mode allows compliance with both supervised manual reset (EN ISO 13849-1 §6.2.10) and automatic restart applications.
- Broad voltage range – Available in 24 V DC and 24–240 V AC variants, simplifying integration into existing panel power architectures.
- Compact 22.5 mm footprint – Minimizes panel real estate without sacrificing contact capacity; three safety outputs support multi-axis or multi-drive disconnection from a single relay.
- Decades of field validation – The PNOZ Classic series has accumulated millions of operating hours across global industrial installations, providing a well-understood failure mode profile for FMEA documentation.
- Direct replacement availability – Pin-compatible with earlier PNOZ generations, enabling like-for-like replacement during maintenance without panel rewiring.
Complete System Bill of Materials
A typical safety gate monitoring circuit using the PNOZ 11 includes the following components:
- PILZ PNOZ 11 – Safety gate monitor relay (this unit)
- Interlocked safety gate switch (e.g., PILZ PSENmech or equivalent IEC 60947-5-1 rated switch)
- 24 V DC PELV power supply (e.g., PILZ PMCprotego or Siemens SITOP)
- Reset pushbutton – momentary NO, IEC 60947-5-1, key-operated or guarded
- Feedback loop contactor(s) – NC auxiliary contacts wired into Y1/Y2 terminals
- Output contactors or safety-rated motor starters (downstream load switching)
- DIN rail, terminal blocks, and cable duct (panel assembly hardware)
- Wiring: 0.75–1.5 mm² flexible copper, rated ≥ 300 V
Compliance & Industry Standards
- EN ISO 13849-1:2015 – Performance Level e (PLe), Category 4
- IEC 62061:2021 – SIL 3 capable
- IEC 60947-5-1 – Low-voltage switchgear and controlgear
- EN 60204-1 – Safety of machinery – electrical equipment
- Machinery Directive 2006/42/EC – CE marked
- UL 508 – Industrial control equipment (UL/cUL listed)
- OSHA 29 CFR 1910.217 – Applicable for US press guarding compliance
Quality Assurance & Sourcing
Konmask.com sources the PILZ PNOZ 11 exclusively through verified industrial distribution channels. Every unit supplied is:
- Inspected for original PILZ factory packaging and holographic authenticity labels
- Verified against PILZ serial number traceability records where applicable
- Stored in ESD-safe, climate-controlled warehousing
- Shipped with original manufacturer documentation and test certificates
- Backed by Konmask’s 12-month supply warranty against manufacturing defects
We do not supply grey-market, refurbished, or counterfeit components. All stock is traceable to authorized distribution.
How to Source This Part
- Confirm your variant – Specify supply voltage (24 V DC or 24–240 V AC) and reset mode requirement before ordering.
- Request a quote – Email support@konmask.com or call +0086 19859288691 with your required quantity and delivery timeline.
- Lead time – In-stock units ship within 1–3 business days. Ex-stock orders for larger quantities are quoted with confirmed lead times.
- Documentation – CE Declaration of Conformity, TÜV certificate, and PILZ SISTEMA library files available upon request.
- Payment & shipping – T/T, PayPal, and trade credit terms available. DHL Express, FedEx, and sea freight options for international orders.
Application-Specific FAQ
Q: Can the PNOZ 11 monitor two independent safety gates simultaneously?
A: No. The PNOZ 11 monitors a single dual-channel safety gate input. For two independent gates requiring independent de-energization, two PNOZ 11 units or a configurable safety relay (e.g., PILZ PNOZmulti 2) should be used.
Q: What is the difference between PNOZ 11 and PNOZ X2.8P?
A: The PNOZ 11 is from the Classic series with fixed function and manual wiring. The PNOZmulti 2 / X-series offers configurable logic via software. For simple single-gate applications, the PNOZ 11 is the cost-effective, proven choice.
Q: Is the PNOZ 11 suitable for light curtain (AOPD) monitoring?
A: Yes, provided the light curtain provides dual-channel OSSD outputs compatible with the PNOZ 11 input circuit. Verify OSSD output type (PNP/NPN) and current sink/source compatibility before wiring.
Q: Can I use the PNOZ 11 in a SIL 2 application?
A: The PNOZ 11 is rated SIL 3 capable per IEC 62061, making it fully suitable for SIL 2 applications with appropriate system-level PFH calculations.
Q: What feedback loop devices are compatible with Y1/Y2 terminals?
A: Any NC auxiliary contact from a contactor, motor starter, or valve solenoid rated for the monitoring circuit voltage. The feedback loop verifies that downstream actuators have de-energized before allowing reset.
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