Pilz 750177 PNOZ s7.2 Contact Expansion Module
A 24 V DC PNOZ s7.2 expansion block with four instantaneous safety contacts and one auxiliary contact.
Overview
750177 is the Pilz PNOZ s7.2 contact expansion module with plug-in screw terminals. It extends the contact capacity of a compatible safety-related control component while preserving the documented safety function architecture.
The module provides four normally open safety contacts and one normally closed auxiliary contact in a 17.5 mm housing.
Specs
| Manufacturer | Pilz |
|---|---|
| Product ID | 750177 |
| GTIN | 4046548052527 |
| Product Family | PNOZsigma |
| Model | PNOZ s7.2 |
| Supply | 24 V DC |
| Safety Contacts | 4 N/O instantaneous |
| Auxiliary Contacts | 1 N/C |
| Terminals | Plug-in screw terminals |
| Width | 17.5 mm |
| Power Consumption | 2 W |
| Duty Cycle | 100% |
| Safety Contacts, AC1 | Up to 240 V / 6 A |
| Safety Contacts, DC1 | Up to 24 V / 6 A |
Features
- Four instantaneous normally open safety contacts for contact multiplication.
- One normally closed auxiliary contact for status use.
- Plug-in screw terminals for serviceable panel wiring.
- Additional contact blocks can be mounted to the right within the documented PNOZsigma arrangement.
Applications
- Contact expansion behind a compatible Pilz safety relay or safety controller output.
- Machine safety circuits that need additional positively guided switching contacts.
- Panel upgrades where the 17.5 mm screw-terminal version is required.
Lifecycle
- Confirm the complete safety-function calculation before modifying contact expansion.
- Use the required PNOZsigma connector and terminating components for the chosen arrangement.
- Record contact loads, external protection and test intervals.
- Function-test every safety path and auxiliary indication after installation.
FAQ
Does 750177 provide independent safety logic?
No. 750177 is a contact expansion block and works with a compatible safety-related control component.
What distinguishes 750177 from 751177?
750177 uses plug-in screw terminals; 751177 is the spring-loaded terminal version.
How many safety outputs does 750177 add?
750177 provides four instantaneous normally open safety contacts plus one normally closed auxiliary contact.
Can more contact blocks be mounted after 750177?
Pilz permits additional blocks to the right when the complete PNOZsigma arrangement follows the operating manual.
What must be validated after replacing 750177?
Test the complete safety function, reset behavior, contact loads, feedback loop and fault response.
Is the SIL or PL of 750177 automatically the SIL or PL of the machine?
No. The complete safety function must be calculated and validated using all participating components.
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