Pilz PNOZ s7.1 Safety Relay — 750167 | 24VDC 3NO | Genuine New In Box

The Pilz PNOZ s7.1 (part number 750167) is a compact, certified safety relay from Pilz's trusted PNOZsigma series, designed for emergency stop monitoring, guard door interlock control, and two-hand control circuits in industrial machinery. Operating at 24V DC with 3 normally open (NO) safety contacts rated at 6A, it meets EN ISO 13849-1 (up to PLe / Category 4) and IEC 61508 (SIL 3) safety integrity requirements — the highest levels for machinery safety.

✅ 100% genuine Pilz product. Brand new in original packaging. Ready for immediate worldwide shipment.

Safety Relay Selection Is Not Optional — Here's Why Genuine Matters

In safety-critical applications, a counterfeit or non-certified relay is not just an engineering risk — it is a legal and liability risk. Machinery Directive 2006/42/EC and ISO 13849 require that safety function components be certified, traceable, and used within their validated operating parameters.

Using a genuine Pilz PNOZ s7.1 means:

Certified safety integrity — PLe / Category 4 / SIL 3 performance is validated and documented by Pilz
Traceable serial number — meets audit requirements for CE marking technical files
Validated PFHD values — mandatory for ISO 13849-1 safety function calculations
No re-validation required — drop-in genuine replacement maintains existing safety function approval

Full Technical Specifications

Parameter	Specification
Manufacturer	Pilz GmbH & Co. KG
Model	PNOZ s7.1
Part Number	750167
Series	PNOZsigma
Product Type	Safety Relay Module
Supply Voltage	24V DC
Safety Contacts	3 × NO (normally open), 6A per contact
Response Time	≤ 20 ms
Operating Temp	-25°C ~ +55°C
Mounting	DIN rail
LED Indicators	Power and relay status LEDs
Safety Standard	EN ISO 13849-1: PLe, Category 4
Functional Safety	IEC 61508: SIL 3
Approval	CE, TÜV
Condition	New / Genuine

⚠️ Safety-critical note: Always verify the PNOZ s7.1 wiring configuration against your machine's safety function requirements and the Pilz operating manual before installation. Incorrect wiring of safety relays can result in loss of safety function.

Understanding the PNOZ s7.1 Model Designation

PNOZ  s  7  .  1
│     ││    └─ .1: Variant / contact configuration identifier
│     │└─────── 7: Model number within PNOZsigma compact series
│     └────────── s: PNOZsigma compact series (standalone, spring-loaded terminals)
└──────────────── PNOZ: Pilz safety relay product family name

The PNOZsigma "s" series denotes the compact standalone safety relay range with spring-loaded terminals — distinguished from the "m" (modular) and "c" (classic) variants. The s7.1 specifically provides 3 NO safety output contacts for load switching.

PNOZsigma Series — Which Model Do You Need?

Model	Part No.	Supply	Safety Contacts	Additional	Safety Level	Best For
PNOZ s3	750103	24VDC	2 NO	—	PLe / SIL 3	Basic E-stop, 2-channel
PNOZ s4	750104	24VDC	3 NO	—	PLe / SIL 3	E-stop, higher load switching
PNOZ s5	750105	24VDC/AC	2 NO, 1 NC	—	PLe / SIL 3	E-stop with feedback monitoring
PNOZ s6.1	750166	24VDC	3 NO	1 NC	PLe / SIL 3	Guard monitoring with auxiliary
PNOZ s7.1	750167	24VDC	3 NO	—	PLe / SIL 3	⭐ E-stop, guard, two-hand control
PNOZ s9	750169	24VDC	4 NO	—	PLe / SIL 3	High-current or multi-circuit switching

Choosing the right PNOZsigma model — 3 key criteria:

Number of safety output circuits needed → 2, 3, or 4 NO contacts
Auxiliary NC contact required? → Select s5, s6.1, or similar with NC output
Supply voltage → 24V DC only (s7.1) or AC/DC options (s5)

What Safety Functions Can the PNOZ s7.1 Monitor?

The PNOZ s7.1 is a multi-function safety relay that can be wired for:

Emergency stop (E-stop) monitoring — Single or dual-channel E-stop button circuits
Guard door / interlocking device monitoring — Position switch and safety door contacts
Two-hand control — Simultaneous dual-hand operation circuits
Light curtain / safety mat output — OSSD output monitoring (verify compatibility)
Safety gate monitoring — Solenoid-operated interlocks and electro-mechanical guard locks

All functions achieve PLe / Category 4 when wired in the approved dual-channel configuration per the Pilz installation manual.

Typical Machine Applications

The PNOZ s7.1 is found in safety circuits across virtually every industrial machine category:

Industrial robots — E-stop circuits, teach pendant interlocks, safety fence monitoring
Hydraulic and pneumatic presses — Guard door and two-hand control safety
CNC machine tools — Door interlock, spindle guard, and E-stop monitoring
Conveyor and material handling — E-stop zones and safety barrier monitoring
Packaging machinery — Guard door monitoring and E-stop safety circuits
Automated assembly cells — Perimeter fencing and light curtain OSSD integration

Shipping & Quality Guarantee

🔒 100% genuine Pilz product — factory sealed with TÜV certification markings
🔍 Pre-shipment inspection on every unit
📦 Original Pilz packaging maintained for full traceability
🌍 Worldwide express shipping available
⚡ In-stock orders dispatched within 1–2 business days

FAQ — Pilz PNOZ s7.1 Safety Relay (750167)

Q1: Is this a genuine Pilz PNOZ s7.1 or a compatible alternative? This is a 100% original Pilz PNOZ s7.1 (750167) — factory new and sealed. We supply only genuine Pilz components. Using non-certified safety relays in safety functions invalidates CE marking, voids machinery compliance, and creates serious liability exposure in the event of a machine-related injury.

Q2: What safety integrity level does the PNOZ s7.1 achieve? The PNOZ s7.1 achieves Performance Level e (PLe) / Category 4 per EN ISO 13849-1 and Safety Integrity Level 3 (SIL 3) per IEC 61508 when wired in the approved dual-channel configuration. This is the highest achievable safety level for machinery safety functions. Specific PFHD values for safety function calculations are available in the Pilz SISTEMA library.

Q3: What is the difference between PNOZ s7.1 and PNOZ s6.1? The primary difference is the auxiliary contact: the PNOZ s6.1 (750166) includes 3 NO safety contacts plus 1 NC auxiliary contact, while the PNOZ s7.1 (750167) provides 3 NO safety contacts only. The NC auxiliary contact on the s6.1 is used for feedback monitoring (contactor monitoring circuits). If your safety circuit requires a feedback loop, specify the s6.1. If 3 NO outputs are sufficient, the s7.1 is the correct choice.

Q4: Can the PNOZ s7.1 monitor light curtains with OSSD outputs? Standard PNOZ safety relays are designed for passive dry contact inputs (E-stop buttons, position switches). For OSSD (Output Signal Switching Device) light curtains, you typically need a relay model specifically rated for OSSD compatibility. Verify the PNOZ s7.1 input circuit specification against your light curtain's output type. For OSSD integration, Pilz also offers the PSEN series safety light curtains with matched relay modules.

Q5: Does the PNOZ s7.1 require manual or automatic restart after a safety event? The restart mode (manual monitored reset vs. automatic reset) is determined by the external wiring configuration, not a fixed hardware setting. The Pilz wiring diagram for the PNOZ s7.1 shows both configurations — manual monitored restart (recommended for most machinery) requires a dedicated reset button wired into the circuit. Refer to the Pilz operating manual for the correct wiring schematic for your application.

Q6: Can this relay be used as a direct drop-in replacement? Yes — it is a direct replacement for any existing PNOZ s7.1 (750167) installation. Before replacement, photograph the existing wiring, confirm the wiring matches the approved schematic, and perform a full functional safety test after installation to verify the safety function is restored correctly. Document the replacement in your machine's technical file.

Q7: Do you provide certificates of conformance or TÜV documentation? The genuine Pilz product includes standard manufacturer markings and CE/TÜV compliance. A certificate of conformance (CoC) can be provided upon request for quality records and CE technical file documentation. Contact us via WhatsApp or the Enquiry button to arrange documentation with your order.

Designing a safety circuit and need help selecting the right PNOZ model for your specific safety function? Our team can help with contact configuration, safety level requirements, and Pilz product selection.

750167 Pilz PNOZ s7.1 24VDC 3n/o Safety Relay 24VDC 750167 Genuine New