MTL 4516 : 20G Shock & IP69K Sensor for Mining Conveyor Systems

The MTL4516 is a dual-channel safety barrier engineered for critical applications in Zone 0/1/2 hazardous environments, certified to ATEX/IECEx standards. Designed to interface with NAMUR-compliant sensors (e.g., inductive proximity switches, pressure sensors), it converts binary signals from explosive zones into safe-area outputs while ensuring galvanic isolation.

Each channel features line fault detection (LFD) that monitors field wiring for open circuits (<50µA) or short circuits (<100Ω), triggering LED indicators and de-energizing relays to prevent unsafe conditions. The module's compact dual-channel design (16mm width) reduces panel space by 50%, making it ideal for high-density installations in petrochemical plants.

Featuring SIL2 certification (IEC 61508) with hardware fault tolerance (HFT=0), the MTL4516 ensures reliable operation in safety instrumented systems (SIS). Its fail-safe relays (10W, 0.5A, 35V DC) switch to a predefined state during faults, while galvanic isolation (250V AC) protects against voltage transients.

The module's hysteresis of 200µA minimizes false triggers by activating outputs at >2.1mA (<2kΩ) and deactivating below 1.2mA (>10kΩ). For applications requiring redundant configurations, the MTL4516 supports SIL3 readiness when paired with redundant sensors.

The MTL4516 streamlines system integration with DIN-rail mounting and compatibility with major DCS platforms like Emerson DeltaV and Schneider Modicon. Its screwless terminals reduce wiring time by 30% compared to traditional screw terminals, while plug-and-play compatibility with MTL4000-series backplanes enables seamless upgrades.

The module's LED status indicators provide real-time visibility into channel health, simplifying troubleshooting. Unlike legacy isolators requiring separate power supplies, the MTL4516 draws power from the safe area (<0.84W per channel), lowering energy costs.

• Product Type: Dual-channel switch/proximity detector interface for hazardous areas
• Certifications: ATEX/IECEx: Zone 0/1/2 (IIC, T4-6) for explosive gas environments
• Channels: Two independent channels with line fault detection (LFD)
• Input Parameters: Signal Range: 4-20mA (NAMUR-compliant) with 200µA hysteresis
• Output Parameters: Relay Contacts: Changeover (CO) relays with 250V AC/1A
• Isolation Features: Galvanic Isolation: 250V AC between input/output circuits
• Power Requirements: Supply Voltage: 20-35V DC (loop-powered)
• Mechanical Specifications: Dimensions: 114mm (H) × 17.5mm (W) × 119mm (D)
• Environmental Conditions: Operating Temperature: -20°C to +70°C