PILZ Sicherheitsrelais 750104 PNOZ s4

Independent safety relay of PILZ PNOZsigma series, 24VDC-Stromversorgung, 3NO+1NC+1SO-Ausgang. Entspricht den Sicherheitsstufen PL e / Kat.4 / SIL 3, Geeignet für die Überwachung von Sicherheitsschleifen wie Not-Aus, Sicherheitstür und Sicherheitslichtvorhang.

1. Modellsegmentdefinition

2. Core Specification Parameter Table

3. Zubehörliste & Installationsrichtlinien

3.1 Standard Package Contents

– PNOZ s4 safety relay main unit (750104)

– Plug-in screw terminal module (pre-installed)

– Product manual (including wiring diagram)

– Mounting clip (for DIN rail)

3.2 Optionales Zubehör

3.3 Wichtige Installationspunkte

Montageart: Standard DIN 35mm rail mounting, snap-fit fixation

Verkabelungsmethode: Plug-in spring terminal; wire cross-section 0.5–2.5mm², max. torque 0.8Nm

Spacing Requirement: Reserve ≥5mm left/right, ≥10mm up/down for heat dissipation

Verkabelungsspezifikation: Separate safety loop and power loop wiring to avoid electromagnetic interference

4. Schaltplan (Core Loop)

[24VDC+] ──┬─── [A1] Relay Power Positive

│

[24VDC-] ──┴─── [A2] Relay Power Negative

Emergency Stop Button (NC) ── [S11] ──┬─── [S12]

│

Safety Door Contact (NC) ── [S21] ──┴─── [S22]

Reset Button ──┬─── [S34] Reset Loop

│

[S33] ─────────┘

Sicherheitsausgang:

[13] ── [14] NO Contact 1 (Main Loop)

[23] ── [24] NO Contact 2 (Control Loop)

[33] ── [34] NO Contact 3 (Alarm Loop)

Hilfsausgang:

[41] ── [42] NC Contact (Fault Indication)

Status Feedback:

[Y32] ── PNP Semiconductor Output (PLC Signal Input)

Notiz: Select single/dual-channel mode and short-circuit detection function according to actual safety requirements.

5. Funktionen & Anwendungsszenarien

5.1 Kernfunktionen

1. Dual-channel Redundant Monitoring: Dual-channel input circuit design, safely cutting off output upon fault.
2. Inter-contact Short-circuit Detection: Optional function to prevent safety failure caused by contact adhesion.
3. Forced Guided Contacts: Safety output contacts adopt forced guided structure to ensure reliable disconnection.
4. Self-diagnosis Function: Real-time internal circuit monitoring; cut off output and indicate fault immediately when abnormal.
5. Flexible Reset Mode: Support automatic reset (power-on reset) and manual reset (rising-edge trigger).

5.2 Typische Anwendungsszenarien

6. Cross-brand Alternative Comparison Table

7. Auswahlrichtlinien & Alternative Lösungen

7.1 Selection Mnemonic Rule

Voltage Matching → Contact Quantity → Safety Level → Input Type → Reset Mode → Space Limitation

7.2 Selection Decision Tree

1. Versorgungsspannung: Confirm system is 24VDC (750104) or 48–240V AC/DC (750134 / 751134).
2. Ausgabeanforderung: 3NO+1NC+1SO meets most scenarios; choose PNOZ s5 (4NO+1NC) for more contacts.
3. Sicherheitsniveau: PL e/Cat.4/SIL 3 is mandatory for high-risk scenarios such as heavy machinery and robotics.
4. Eingabetyp: Select IN2- mode if short-circuit detection is required; IN2+ if not needed.
5. Reset-Modus: Automatic reset for unattended occasions; manual reset for manned operation areas.

7.3 Recommended Alternative Solutions

1. Budget Limited: Choose Weidmüller SRB series (kostengünstig) or domestic Chint NJB1 series (basic safety level).
2. System Integration: Siemens 3RK3 series (seamless connection with S7 PLC) or Schneider XPS series (compatible with Modicon PLC).
3. Funktionserweiterung: Match with PNOZ s pIE / nIE pulse extension modules to realize complex safety logic.
4. Platz begrenzt: Keep PNOZ s4 (22.5mm narrow design), avoid wide-body models.
5. Air Freight Compliance & Zertifizierung

CE-Zertifizierung: Compliant with EN ISO 13849-1, IEC 61508, IEC 62061.

Air Freight Judgment: No built-in lithium battery / supercapacitor; belongs to ordinary industrial electronic equipment, no special air freight restrictions.

Packaging Requirement: Anti-static packaging; transport temperature: -40℃ ~ +85℃.

9. Troubleshooting Quick Reference

PNOZsigma Basic Safety Relay Series — Full Model & Bestell-Nr. List