The Pilz 787303 is a PNOZ X2P C series safety relay manufactured by Pilz GmbH, Germany.
It is primarily used in industrial automation for reliable monitoring of safety devices such as emergency stop buttons, safety doors, and limit switches. It is a compact, easy-to-wire, and extremely high-safety-level industrial safety relay, ideal for automated production lines or machinery where strict requirements for safe shutdown are necessary.
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Core Features
- ✓ Safety Monitoring: Primarily used to monitor emergency stop buttons, safety doors, and limit switches, ensuring that mechanical equipment stops immediately upon triggering a safety event.
- ✓ Fault Detection: Supports single-channel or dual-channel wiring, with inter-contact short-circuit detection, effectively identifying input circuit faults.
- ✓ Reset Mode: Offers both automatic reset and monitorable manual reset modes, allowing users to flexibly choose according to their actual safety needs.
- ✓ Status Display: The device panel features LED indicators that clearly display the power status and the switching status of Channel 1 and Channel 2.
- ✓ Expandability: Supports increasing the number of available safety contacts by connecting expansion modules.
Technical Specifications
| Brand |
Pilz |
| Model / Part Number |
PNOZ X2P C 24VACDC 2n/o |
| Material Number (MNR) |
787303 |
| Product Type |
Safety relay |
| GTIN |
4046548008517 |
| Operating Voltage |
24V AC/DC |
| Wiring Method |
Cage spring clamp terminal |
| Input Channels |
Supports single-channel or dual-channel wiring |
| Reset Mode |
Selectable automatic reset or monitorable manual reset |
| Safety Contacts |
2 normally open instantaneous safety output contacts (2n/o) |
| Product Dimensions |
Height 101.0 mm × Width 22.5 mm × Depth 121.0 mm |
| Mounting Method |
Standard 35mm DIN rail mounting |
| Operating Temperature |
-10°C to 55°C |
Frequently Asked Questions
Q: What are the differences between it and the PNOZ X3 series?
A: Although the Pilz 787303 (i.e., PNOZ X2P C) and the PNOZ X3 series both belong to Pilz's classic PNOZ X safety relay family, they differ significantly in output configuration, physical size, and output type.
Q: What are some common malfunctions of this product?
A: When malfunctions occur, in most cases, they are caused by loose external wiring, faulty external safety devices (emergency stop, contactor, etc.), or improper mode settings. It is recommended to first disconnect the power and check the external wiring and components. Only after confirming that these are not the problem should you consider whether the relay itself is damaged.
Q: How to handle the contact adhesion of this relay?
A: Contact adhesion (also known as contact welding) in safety relays is a very serious safety hazard and must be taken seriously. When handling it, it is necessary to clearly distinguish whether the adhesion is to external contacts (emergency stop buttons, contactors, etc.) or to internal contacts of the relay (damage to the PNOZ X2PC itself).
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