Pilz 750104 PNOZ s4 Safety Relay 24VDC 3NO 1NC Light Curtain Guard

Description

The Pilz 750104 PNOZ s4 is a high-performance, compact safety relay from the renowned PNOZsigma series. Operating on a 24 V DC control voltage, it features 3 safety output contacts (Normally Open) and 1 auxiliary feedback contact (Normally Closed) with secure screw terminal connections. It is engineered specifically for evaluating input signals from light curtains, emergency stop buttons, and safety gate interlocks.

Safety relays act as the core decision-making element between hazard-detecting sensors and power-isolating actuators. Upon sensing an emergency stop signal or light curtain beam interruption, the PNOZ s4 immediately cuts control power to hazardous actuators. For safety engineers, control panel builders, and maintenance managers across Bangladesh, this German-engineered Pilz module delivers certified operator protection and international safety compliance.

Key Features

• PNOZsigma Compact Housing: Ultra-slim 22.5 mm width saves valuable space on standard 35 mm DIN rails inside electrical panels.
• Screw Terminal Connection: Heavy-duty screw terminal blocks ensure secure, vibration-proof wiring retention.
• Dual-Channel Input Evaluation: Supports single-channel or dual-channel safety wiring configurations with cross-circuit detection.
• Optimized for Light Curtains: Built-in evaluation routines handle semiconductor outputs (OSSDs) from optical light curtains and safety grids.
• Comprehensive LED Diagnostics: Clear front LEDs provide real-time status indication for power supply, input channels, and relay contact states.

Technical Advantages

• High Safety Level Rating: Complies with up to PL e / Category 4 (EN ISO 13849-1) and SIL CL 3 (EN IEC 62061) standards.
• Durable Industrial Construction: Enclosed in a rugged polycarbonate housing engineered to withstand mechanical vibration and panel heat.
• Advanced Safety Protection: Internal electronic logic prevents relay contact welding, cross-faults, and short-circuit line faults.
• Energy-Efficient Operation: Low thermal dissipation limits control cabinet heat buildup and lowers auxiliary power draw.
• Easy Maintenance: Plug-in screw terminal blocks allow fast module replacement without disconnecting individual wire leads.

Applications

• Residential: Custom safety interlocking for automated residential lifts and specialized elevator panels.
• Commercial: Escalator safety control circuits and commercial facility automated barrier gates.
• Industrial: Light curtain monitoring, E-stop monitoring, safety gate interlocks, and two-hand control circuits.
• Factory: Garment cutting machines, textile machinery, packaging lines, and metal stamping presses.
• Office: Security barrier emergency shutoff controllers in corporate facilities.
• Project Installation: Machine safety compliance retrofits, OEM panel integration, and production line safety upgrades.

Why Choose This Product?

• Pilz Safety Benchmark: Manufactured by Pilz, the globally recognized benchmark brand in industrial machine safety technology.
• Fast Response Time: Rapid safety contact opening minimizes hazardous machine overrun distances.
• Cost Effectiveness: Prevents costly operator injury liabilities, guards high-value machinery, and reduces unplanned downtime.
• After-Sales Value: Supported by loopshop.com.bd with dedicated technical assistance and prompt nationwide delivery across Bangladesh.

Technical Specification Table

Features List

• ✓ 24 V DC supply voltage operation
• ✓ 3 Safety contacts (NO) + 1 Auxiliary contact (NC)
• ✓ Optimized for light curtain (OSSD) safety applications
• ✓ Certified up to SIL CL 3 and PL e safety level compliance
• ✓ Compact 22.5 mm DIN-rail mounting profile with screw terminals

Benefits For Customers

• Reduces Electricity Cost: Efficient electronic circuitry limits utility power draw and panel thermal stress.
• Improves Operational Reliability: Prevents false trips while guaranteeing instant emergency shutoff during actual light curtain beam breaks.
• Saves Maintenance Cost: Plug-in terminal design simplifies troubleshooting and lowers maintenance replacement time.
• Suitable for Bangladesh Environment: Performs reliably in high ambient temperatures (up to +55 °C) inside factory control panels across Bangladesh.

Installation & Maintenance Guide

Installation Requirements:

• Mount the module vertically onto a standard 35 mm DIN rail inside an IP54-rated protective control enclosure.
• Wire light curtain outputs (OSSDs), E-stop switches, or safety gate contacts to screw terminals using specified wire gauges.
• Select the desired operating mode (Manual/Automatic reset) via front selector switches prior to powering on.
• Wire NO safety outputs in series with main motor contactors or drive enable inputs according to Pilz wiring schematics.

Maintenance Tips:

• Conduct routine safety functional testing at least annually by interrupting the light curtain beam and triggering E-stops.
• Keep top and bottom ventilation grilles free of industrial dust, oil film, or textile lint buildup.
• Monitor front diagnostic LEDs during routine panel audits to verify switching channel status.

Safety Instructions:

• Installation and wiring must be performed exclusively by qualified automation safety technicians.
• Always isolate control and main power feeds before performing wiring modifications or terminal adjustments.
• Never short-circuit or bypass safety relay output contacts under any circumstances.

Frequently Asked Questions (FAQ)

Q: What is the price of Pilz 750104 PNOZ S4 Safety Relay 24VDC 3no 1nc in Bangladesh?

A: You can check the latest updated price for the Pilz 750104 PNOZ s4 safety relay directly on loopshop.com.bd or contact our customer support for bulk price quotes.

Q: Where can I buy Pilz 750104 PNOZ S4 Safety Relay 24VDC 3no 1nc in Bangladesh?

A: You can purchase genuine Pilz 750104 safety relays online directly from loopshop.com.bd with fast delivery across Bangladesh.

Q: What warranty does this product have?

A: Warranty specifications depend on current manufacturer stocking and distribution terms. Please verify details on loopshop.com.bd or contact sales before ordering.

Q: Is this suitable for Bangladesh climate?

A: Yes, with an operating temperature rating from -10 °C to +55 °C, it is engineered to function reliably inside industrial control cabinets in Bangladesh.

Q: How to install this product?

A: Snap the module onto a 35 mm DIN rail, wire input light curtains and output contact circuits to the screw terminals, configure reset modes, and apply 24 V DC power.

Q: What is the primary application for the Pilz 750104 PNOZ s4?

A: It is primarily designed for evaluating signals from optical light curtains, emergency stop buttons, and safety gate interlocks.

Q: What output contact configuration does the Pilz 750104 have?

A: It features 3 Normally Open (NO) safety contacts and 1 Normally Closed (NC) auxiliary feedback contact.

Q: Does the 750104 model use screw or spring terminals?

A: The model 750104 features screw terminal blocks (model 751104 uses spring push-in terminals).

Q: What safety performance level can the PNOZ s4 achieve?

A: It complies with up to PL e / Category 4 (EN ISO 13849-1) and SIL CL 3 (EN IEC 62061) when correctly wired.

Q: Is loopshop.com.bd a trusted seller for Pilz automation safety components in BD?

A: Yes, loopshop.com.bd is a leading online store in Bangladesh supplying authentic industrial automation and machine safety components.