PILZ PNOZ X11P (777080) – Dual-Channel Safety Relay | PNOZ X Series Platform
Engineering Background
The PNOZ X series is PILZ’s globally proven safety relay platform, deployed across tens of thousands of industrial installations since the 1980s. The PNOZ X11P (order no. 777080) represents the high-output variant of this series, engineered specifically for applications requiring simultaneous control of multiple safety-critical actuators — including emergency stop circuits, safety gates, light curtains, and two-hand control devices.
Product Positioning
Designed for procurement engineers specifying safety components in machinery, robotics, press lines, and automated assembly systems, the PNOZ X11P delivers certified dual-channel monitoring with instantaneous and time-delayed output options in a compact DIN-rail package. It is the preferred choice when a single safety relay must drive multiple downstream contactors or safety-rated outputs simultaneously.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Order Number | 777080 |
| Model | PNOZ X11P |
| Manufacturer | PILZ GmbH & Co. KG |
| Series / Platform | PNOZ X |
| Supply Voltage | 24 VDC |
| Input Channels | Dual-channel (2-channel monitored) |
| Safety Outputs (Instantaneous) | 6 × NO (normally open) |
| Auxiliary Output | 1 × NC (normally closed, feedback/signaling) |
| Safety Integrity Level | SIL 3 (IEC 62061) |
| Performance Level | PLe, Category 4 (EN ISO 13849-1) |
| Response Time | ≤ 20 ms |
| Reset Mode | Manual monitored / Automatic (selectable) |
| Cross-fault Detection | Yes |
| Enclosure Rating | IP40 (housing) / IP20 (terminals) |
| Mounting | DIN rail (EN 60715) |
| Operating Temperature | -10 °C to +55 °C |
| Storage Temperature | -25 °C to +70 °C |
| Weight | 640 g |
| Certifications | CE, TÜV, UL, cUL, BG |
| Applicable Standards | EN ISO 13849-1, IEC 62061, EN 60204-1, IEC 61508 |
Proven Application Environments
- Emergency Stop (E-stop) Circuits — Dual-channel monitoring of mushroom-head E-stop buttons per EN ISO 13850, with cross-fault detection eliminating single-fault bypass risk.
- Safety Gate & Interlocking Systems — Compatible with tongue-operated and solenoid-locked safety switches; supports guard locking feedback via NC auxiliary output.
- Light Curtain & Safety Scanner Integration — OSSD-compatible input monitoring for Type 4 optoelectronic protective devices.
- Two-Hand Control Devices — Simultaneous actuation monitoring per EN 574 Type IIIC.
- Press & Stamping Lines — High-output contact count supports simultaneous de-energization of main drive contactors and brake relays.
- Robotic Work Cells — Perimeter guarding with multiple access points; single relay controls all zone outputs.
- Automated Assembly & Conveyor Systems — Integrated into safety-rated PLC architectures as a hardwired backup layer.
Engineering Advantages
- 6 Instantaneous Safety Outputs — Industry-leading output count for a single-width relay; eliminates the need for output expansion modules in most applications.
- Certified to SIL 3 / PLe Cat.4 — Meets the highest functional safety requirements for machinery directive compliance without additional architecture complexity.
- Cross-Short Detection — Internal monitoring detects wiring faults between input channels before they can mask a hazardous failure.
- Selectable Reset Mode — Manual monitored reset prevents automatic restart after fault clearance; automatic mode available for non-hazardous auxiliary functions.
- Wide Operating Temperature Range — Reliable operation from -10 °C to +55 °C suits foundry, cold-storage, and outdoor-cabinet installations.
- DIN Rail Compact Form Factor — Minimizes control cabinet footprint; compatible with standard 35 mm DIN rail assemblies.
- Global Certification Portfolio — CE, TÜV, UL, cUL, and BG marks satisfy export compliance for EU, North American, and Asian markets.
System Architecture & Signal Flow
The PNOZ X11P operates on a dual-channel, positively guided relay architecture. On power-up or reset, both input channels are monitored simultaneously. A valid safety signal on both channels energizes the internal relay coils, closing all 6 NO safety contacts. Loss of signal on either channel — or detection of a cross-fault — immediately de-energizes all outputs within ≤ 20 ms. The NC auxiliary output simultaneously opens, providing a feedback signal to the machine controller (PLC) for fault logging and HMI annunciation. The monitored manual reset input requires a momentary pulse (not a sustained signal) to prevent reset-switch failure from bypassing the safety function.
Typical wiring topology: E-stop button (2-channel) → PNOZ X11P inputs → 6× NO outputs → Main contactor coils / servo drive enable / brake release → Machine motion.
Sourcing & Quality Verification
- All units supplied by Konmask.com are sourced from authorized PILZ distribution channels or verified OEM surplus with full traceability documentation.
- Each unit undergoes incoming inspection: label verification (order number 777080, date code, CE/TÜV markings), physical integrity check, and terminal continuity test prior to dispatch.
- Original PILZ packaging, datasheet, and certificate of conformity included where available.
- Counterfeit risk mitigation: PILZ holograms, terminal block color coding, and PCB markings verified against OEM reference samples.
Procurement Process
- Step 1 — Confirm Part Number: Verify order number 777080 and supply voltage (24 VDC) match your BOM requirements.
- Step 2 — Request Quote: Contact [email protected] with quantity, required delivery date, and destination country for freight and duty estimation.
- Step 3 — Documentation: Request datasheet, CE declaration of conformity, or test report as required by your quality department.
- Step 4 — Order & Ship: Orders confirmed before 14:00 CST typically dispatched same business day. DHL Express, FedEx IP, and sea freight options available.
- Step 5 — Incoming Inspection: Recommended checklist provided on request — label, hologram, terminal resistance, and functional test procedure.
Technical FAQ
Q: Can the PNOZ X11P replace a PNOZ X7 or PNOZ X9 in an existing installation?
A: The X11P shares the same 24 VDC supply and dual-channel input architecture but provides more output contacts. Terminal assignments differ — always consult the PILZ wiring diagram for the specific model before substitution.
Q: Is the PNOZ X11P suitable for Category 4 / PLe without additional components?
A: Yes, when wired with a dual-channel input device (e.g., dual-contact E-stop) and monitored manual reset, the standalone PNOZ X11P achieves Cat.4 / PLe per EN ISO 13849-1.
Q: What is the expected service life / B10d value?
A: PILZ specifies B10d = 100,000 operating cycles for the safety output contacts under rated load. Refer to the PILZ SISTEMA library file for PNOZ X11P for full PFHd and MTTFd values.
Q: Can I use the NC auxiliary output as a safety output?
A: No. The NC output is a signaling/feedback contact only and is not rated or certified as a safety output. Use only the 6 NO contacts for safety-critical switching.
Q: What is the minimum reset pulse width?
A: PILZ specifies a minimum reset pulse of 100 ms to ensure reliable detection by the internal monitoring circuit.
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