1. Introducció
This instruction manual provides essential information for the safe and efficient installation, operation, and maintenance of the PILZ PNOZ S30 C Safety Relay, model 751330. This device is designed for speed monitoring and standstill monitoring applications within safety-related circuits.
The PNOZ S30 C is a standalone safety relay featuring 2 normally open (N/O) and 2 normally closed (N/C) outputs, compatible with a wide voltage range of 24-240 VAC/DC. It incorporates PNOZSMART technology and plug-in spring terminals for ease of use.
2. Informació de seguretat
Instruccions importants de seguretat:
- Installation, commissioning, and maintenance must only be carried out by qualified and authorized personnel.
- Always disconnect power before performing any installation or maintenance work on the device.
- Adhere to all local and national safety regulations, standards, and directives.
- Ensure proper grounding and wiring according to the provided diagrams and specifications.
- Do not bypass or disable safety functions.
- Protegiu el dispositiu de la humitat, la pols i les temperatures extremes.
Failure to follow these safety instructions can result in serious injury, death, or damage to equipment.
3. Producte acabatview
The PILZ PNOZ S30 C (Model 751330) is a compact safety relay designed for reliable monitoring in industrial applications. Its front panel features clearly labeled terminals, a diagnostic display, and a control element.

Figura 1: Frontal view of the PILZ PNOZ S30 C Safety Relay. The image displays the yellow housing, black plug-in spring terminals at the top and bottom, a green diagnostic display in the center, and a red rotary switch/button. Terminal labels such as IN1, IN2, GND, Y13, Y12, Y11, Y10, Y30, Y35, Y34, Y33, Y32, Y31, A1, Y1, Y2, A2, S11, S21, S34, 13, 14, 23, 24, 21, 22, 11, 12 are visible. The display shows 'Power', 'In1', 'In2', 'Rel1', 'Rel2', and 'Fault' indicators.
4. Configuració
4.1 Muntatge
The PNOZ S30 C is designed for DIN rail mounting. Ensure adequate space for ventilation and wiring connections. Mount the device in a suitable control cabinet or enclosure to protect it from environmental factors.
- Snap the device onto a standard 35mm DIN rail.
- Verify that the device is securely fastened.
4.2 Cablejat
All connections are made via the plug-in spring terminals located at the top and bottom of the device. Refer to Figure 1 for the physical layout of the terminals. Ensure correct polarity and wire gauges are used according to electrical standards.
- Font d'alimentació: Connecteu el vol operatiutage (24-240 VAC/DC) to the designated power terminals (e.g., A1, A2).
- Entrades: Connect safety-related input devices (e.g., emergency stop buttons, safety gates) to input terminals such as IN1, IN2, S11, S21, S34.
- Sortides: The device provides 2 Normally Open (N/O) and 2 Normally Closed (N/C) safety outputs. Connect these to the control circuit of contactors or other safety-related components. Output terminals are typically labeled with numbers like 13, 14 (N/O), 23, 24 (N/O), 11, 12 (N/C), 21, 22 (N/C). Additional auxiliary outputs (e.g., Y13, Y12, Y11, Y10, Y30, Y35, Y34, Y33, Y32, Y31, Y1, Y2) may be available for signaling or non-safety functions.
- Terra: Ensure proper grounding of the device via the GND terminal.
Always consult the detailed wiring diagram provided with the product packaging for specific connection requirements for your application.
4.3 Engegada inicial
After completing all wiring, apply power to the device. Observe the diagnostic display for status indicators. The device will perform an internal self-test upon power-up.
5. Funcionament
The PNOZ S30 C monitors speed and standstill conditions. Its operational status is indicated by the front panel display.
- Indicadors de visualització: The display shows the status of various functions:
- Potència: Indicates that the device is powered.
- In1, In2: Status of input channels.
- Rel1, Rel2: Status of the internal safety relays (outputs).
- Error: Illuminates if an error or fault condition is detected.
- Element de control: The red rotary switch/button is used for configuration, acknowledgment of faults, or other operational adjustments as per the specific application and configuration. Refer to the detailed product documentation for programming and configuration instructions.
The device operates in an automatic mode, continuously monitoring the connected safety functions. Any deviation from safe operating parameters will trigger a safety response, typically opening the safety outputs.
6. Manteniment
The PILZ PNOZ S30 C is designed for minimal maintenance. Regular inspections are recommended to ensure continued safe operation.
- Inspecció visual: Reviseu periòdicament el dispositiu per detectar qualsevol signe de danys, decoloració o connexions soltes.
- Neteja: If necessary, clean the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Prova funcional: Perform periodic functional tests of the safety circuit as required by relevant safety standards and your risk assessment.
There are no user-serviceable parts inside the device. Do not attempt to open or repair the unit. Contact PILZ technical support for any repair or service needs.
7. Solució De Problemes
If the device is not functioning as expected, refer to the following basic troubleshooting steps:
- Sense indicació d'alimentació:
- Check the power supply connections (A1, A2) and ensure the correct voltage s'aplica.
- Verifiqueu que la font d'alimentació estigui activa.
- "Fault" Indicator On:
- Identify the specific fault code or message on the display, if available.
- Check all input signals (IN1, IN2, S11, S21, S34) for proper operation and wiring.
- Inspect output wiring for short circuits or overloads.
- Ensure that all safety devices connected to the inputs are in a safe state.
- Attempt to acknowledge the fault using the control element (red button/switch) after resolving the cause.
- Outputs Not Activating:
- Verify that all input conditions for safe operation are met.
- Check the status of "Rel1" and "Rel2" indicators on the display.
- Ensure that no fault condition is present.
For complex issues or persistent faults, consult the comprehensive PILZ PNOZ S30 C technical documentation or contact PILZ technical support.
8. Especificacions
| Paràmetre | Valor |
|---|---|
| Marca | PILZ |
| Número de model | 751330 |
| Sortides | 2 Normally Open (N/O) + 2 Normally Closed (N/C) |
| Bobina Voltage | 240 Volts |
| Vol. de commutació màximatage | 240 Volts |
| Mode d'operació | Automàtic |
| Dimensions (paquet) | 5 x 4 x 4 polzades |
| Pes (paquet) | 0.8 unces |
9. Garantia i Suport
For information regarding product warranty, technical support, or service, please contact PILZ directly through their official website or authorized distributors. Ensure you have your product model number (751330) and serial number available when seeking support.





