1. High-Reliability Hazardous Area Interface with Precision Signal Conditioning
The MTL4514 is a single-channel switch/proximity detector interface engineered for hazardous environments, certified for Zone 0, IIC, and T4-T6 classifications under ATEX/IECEx standards. Designed to bridge explosive zones and safe-area control systems, it enables secure operation of a single load via switches or proximity detectors located in potentially flammable atmospheres. The module features NAMUR-compliant inputs (BS EN 60947-5-6:2001), ensuring seamless compatibility with inductive proximity switches and pressure sensors commonly used in petrochemical and oil & gas applications. Its line fault detection (LFD) mechanism identifies open circuits (≤50 µA) or short circuits (≤100 Ω) in field wiring, triggering LED indicators and de-energizing the output relay to prevent unsafe conditions. With a compact form factor (1.58cm x 10.98cm x 12.36cm) and low power consumption (≤35mA at 24V DC), the MTL4514 optimizes panel space while delivering robust performance in harsh conditions. Unlike competitor solutions like Pepperl+Fuchs’ single-channel isolators, the MTL4514 integrates LFD directly into the module, eliminating the need for external fault detection devices and reducing installation complexity.
2. Functional Safety-Compliant Design for Critical Applications
Featuring SIL2 capability in simplex configurations (HFT=0) and SIL3 readiness in redundant setups (HFT=1), the MTL4514 meets IEC 61508 functional safety requirements, making it ideal for safety-critical processes. Its fail-safe relay outputs (10W, 0.5A, 35V DC) ensure secure load switching, while galvanic isolation between input/output/power channels safeguards against EMI and voltage transients. The module’s adjustable hysteresis of 200 µA (650 Ω) minimizes false triggers by activating outputs at >2.1 mA (<2 kΩ) and deactivating below 1.2 mA (>10 kΩ). This precision is critical for applications like emergency shutdown systems or fire and gas monitoring, where reliability is paramount. Compared to Siemens’ similar interfaces, the MTL4514 offers phase reversal control via side-mounted switches, allowing users to adapt to diverse sensor polarities without rewiring. Additionally, its wide input voltage range (7–9V DC) ensures compatibility with legacy and modern field devices, reducing inventory costs for multi-vendor installations.
3. Versatile Integration and Rugged Performance
The MTL4514 simplifies system integration with its DIN-rail mountable design and compatibility with 主流 DCS platforms like Honeywell C300 and Yokogawa CS3000. Its single-channel architecture provides flexibility for monitoring discrete processes, such as valve positioners or pump status indicators, while changeover relay contacts support both normally open and closed circuit configurations. The unit’s extended operating temperature range (-20°C to +60°C) and vibration/shock resistance (IEC 60068-2-6/29) ensure reliable performance in extreme industrial environments. LED indicators for power, channel status, and faults enable rapid diagnostics, streamlining maintenance workflows. Unlike traditional isolators that require separate power supplies, the MTL4514 draws power directly from the safe area, reducing cabling complexity. This combination of advanced features, rugged construction, and ease of use positions the MTL4514 as a cost-effective solution for industries ranging from pharmaceuticals to offshore oil production, where safety, precision, and scalability are non-negotiable.
| Category | Specification |
| Certifications | - Zone 0, IIC, T6 (ATEX/IECEx)
- Div. 1, Group A (UL/cUL)
- SIL2 (HFT=0) / SIL3 (HFT=1) per IEC 61508:201012
- NAMUR-compliant (BS EN 60947-5-6:2001) |
| Channels | Single-channel design for hazardous-area switch/proximity detector interface. |
| Input Parameters | - Sensor Voltage: 7–9V DC (1 kΩ ±10%)
- Activation Threshold: >2.1 mA (<2 kΩ input resistance)
- Deactivation Threshold: <1.2 mA (>10 kΩ input resistance)
- Hysteresis: 200 µA (650 Ω nominal) |
| Output Parameters | - Relay Contacts: Changeover (NO/NC) with 10W, 0.5A, 35V DC (safe area)
- Load Compatibility: 30V DC / 200 mA (solid-state relay)
- Fail-Safe Operation: Relay de-energizes on fault detection |
| Line Fault Detection (LFD) | - Detects open/short circuits via LED indicators
- Open-Circuit Alarm: Triggers at <50 µA, clears at >250 µA
- Short-Circuit Alarm: Triggers at <100Ω, clears at >360Ω
- Automatic Isolation: Faulty channel relay de-energizes to prevent unsafe conditions |
| Power Requirements | - Supply Voltage: 20–35V DC (field power via backplane or external supply)14
- Power Consumption: ≤35mA at 24V DC (≤0.84W)8
- Galvanic Isolation: 250V AC (input/output/power) |
| Mechanical Specifications | - Mounting: DIN-rail (35mm)
- Dimensions: 1.58cm (W) × 10.98cm (H) × 12.36cm (D) (compatible with MTL4500 series)4
- Weight: <0.2kg (estimated) |
| Environmental Conditions | - Operating Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +80°C
- Humidity: 5–95% RH (non-condensing)
- Vibration/Shock Resistance: Compliant with IEC 60068-2-6/29 standards |
| Interface Compatibility | - Field Sensors: Inductive proximity switches, pressure sensors, and NAMUR-compliant devices
- Control Systems: Compatible with 主流 DCS platforms (e.g., Honeywell C300, Schneider Modicon, Yokogawa CS3000)216 |
| Differentiating Features | - Integrated LFD: Eliminates need for external fault detection devices
- Phase Reversal Control: Selectable via side-mounted switches
- Compact Design: Single-channel module optimized for space-constrained applications |
Packaging & Shipping
Company Information
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