Model: PNOZ S3 24VDC (750103)
Brand: PILZ
This manual provides essential information for the safe and effective use of the PILZ PNOZ S3 safety relay. The PNOZsigma safety relay is designed for monitoring safety functions in industrial applications, ensuring reliable operation of emergency stop buttons, safety gates, and light curtains.
Please read this manual thoroughly before installation, operation, or maintenance to ensure proper functionality and to prevent potential hazards.
AVÈTISMAN: This device must be installed and maintained by qualified personnel only. Failure to follow these instructions can result in serious injury or death.

Figure 1: PILZ PNOZ S3 Safety Relay
The PILZ PNOZ S3 is a compact safety relay designed for monitoring safety functions. Its narrow 17.5 mm width allows for space-saving installation in control cabinets.
Karakteristik kle:
Deskripsyon imaj: Yon bò view of the PILZ PNOZ S3 safety relay, showcasing its distinctive yellow and black housing. The top section features two sets of terminals, labeled 'EX' and 'LX', indicating expansion and input connections. Below these, a row of terminals is visible, marked 'A1', '13', '23', 'S12', 'S22', and 'S34', which are typically used for power supply and safety inputs. The side panel of the unit clearly displays the product name 'PILZ PNOZ S3' and a vertical array of indicator lights. These lights are labeled 'Power', 'In1', 'In2', 'Out', 'Start', and 'Fault', providing visual feedback on the relay's operational status. At the bottom, another set of terminals is present, labeled 'S11', 'S21', 'Y32', 'A2', '14', and '24', which are typically for safety outputs and auxiliary connections. The overall design emphasizes a compact, industrial-grade construction with clear labeling for ease of installation and monitoring.
The PNOZ S3 is designed for DIN rail mounting. Ensure the mounting surface is stable and free from excessive vibration. Mount the device vertically to ensure proper heat dissipation.
Use appropriate wire gauges for all connections. The device features plug-in screw-type terminals for secure wiring. Refer to the terminal designations on the device for correct connections.
Ensure all connections are tight and secure to prevent intermittent operation or safety hazards.
After completing all wiring and verifying connections, apply power to the device. The "Power" indicator light should illuminate.
| Endikatè | Estati | Deskripsyon |
|---|---|---|
| Pouvwa | Vèt (ON) | Aparèy limen. |
| In1, In2 | Vèt (ON) | Safety inputs are closed (e.g., E-STOP released, safety gate closed). |
| Soti | Vèt (ON) | Safety outputs are active (relay contacts closed). |
| Kòmanse | Vèt (ON) | Start condition met (e.g., start button pressed, automatic start enabled). |
| Fòt | Red (ON/Flashing) | Indicates an internal fault or wiring error. Refer to troubleshooting. |
Once all safety inputs are closed (In1, In2 lights are green), the device is ready to be started. Depending on the configuration:
To stop the safety function, activate a safety input (e.g., press E-STOP, open safety gate). The "Out" light will extinguish, and the safety outputs will de-energize.
The PILZ PNOZ S3 safety relay is designed for minimal maintenance. However, regular inspections are recommended to ensure continued safe operation.
All maintenance and testing should be performed by qualified personnel.
This section provides guidance for common issues. For complex problems, contact PILZ technical support.
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| "Power" light is off. | Pa gen ekipman pou kouran oswa vòltaj ki pa kòrèktage. | Check 24 V DC power supply to terminals A1/A2. Verify voltage. |
| "In1" or "In2" light is off when inputs should be closed. | Open safety input circuit (e.g., E-STOP pressed, safety gate open, wiring error). | Check continuity of safety input devices and wiring to S12, S22, S34. Ensure all safety devices are in their safe (closed) state. |
| "Out" light does not illuminate after start attempt. | Safety inputs not closed, start condition not met, or internal fault. | Verify "In1" and "In2" lights are green. If manual start, ensure start button is pressed and "Start" light illuminates. Check "Fault" light. |
| "Fault" light is red. | Internal device fault, short circuit in input wiring, or incorrect wiring. | Disconnect power, re-check all wiring according to the manual. If fault persists, the device may be defective. |
| Paramèt | Valè |
|---|---|
| Modèl | PNOZ S3 24VDC (750103) |
| Antre | 1/2-channel wiring with/without detection of shorts across contacts |
| Kòmanse Opsyon | Manyèl / Otomatik |
| Sorti Sekirite | 2 N/O (Normally Open) |
| Rezilta oksilyè | 1 SC (Signaling Contact) |
| Pwovizyon pou Voltage | 24 V DC |
| Lajè | 17.5 mm |
| Tèminal yo | Plug-in screw type |
| Fonksyon Siveyans | E-STOP, pòtay sekirite, gad limyè |
| Pwa atik | 0.01 ons |
| Kalite Connector | Plug-In |
| Kontakte Materyèl | Nikèl |
| Kalite kontak | Nòmalman Louvri |
| Kalite aliye | Ploge nan mòn |
Specific warranty terms for the PILZ PNOZ S3 safety relay are provided by the manufacturer, PILZ. Please refer to the warranty documentation included with your purchase or visit the official PILZ website for detailed information regarding warranty coverage, duration, and conditions.
Kenbe prèv acha ou pou nenpòt reklamasyon garanti.
For technical assistance, product inquiries, or support regarding the PILZ PNOZ S3 safety relay, please contact PILZ directly.
When contacting support, please have your product model (PNOZ S3 24VDC) and any relevant error messages or observations ready.
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