1. Advanced Hazardous Area Interface with Line Fault Detection
The MTL4516C is a dual-channel switch/proximity detector interface engineered for hazardous environments, certified for Zone 0, IIC, and T4-T6 classifications . Designed to bridge hazardous and safe areas, it enables control of two safe-area loads via switches or proximity detectors located in explosive zones. Each channel features line fault detection (LFD), which instantly identifies open or short circuits in field wiring through dedicated LED indicators . This proactive monitoring ensures continuous operational integrity, reducing downtime and maintenance costs. The module supports NAMUR-compliant inputs, aligning with BS EN 60947-5-6:2001 standards for proximity detectors, and offers selectable phase reversal via side-mounted switches . With a compact form factor (1.58cm x 10.98cm x 12.36cm) and low power consumption (35mA at 24V), it optimizes space in control panels while delivering reliable performance in harsh conditions. The fail-safe relay outputs (10W, 0.5A, 35V DC) ensure secure load switching, making it ideal for critical applications in petrochemical, pharmaceutical, and oil & gas industries.
2. Precision Signal Conditioning with Functional Safety Compliance
Featuring a hysteresis of 200 µA (650 Ω), the MTL4516C ensures accurate signal thresholding, activating outputs when input current exceeds 2.1 mA (<2 kΩ) and deactivating below 1.2 mA (>10 kΩ) . This precision minimizes false triggers, enhancing system stability. The module is SIL2-capable for single-device use (HFT=0) and SIL3-ready in redundant configurations (HFT=1), meeting IEC 61508 functional safety requirements . Its floating solid-state relays and galvanic isolation between input/output/power channels provide robust protection against electromagnetic interference (EMI) and voltage spikes, ensuring signal integrity in noisy industrial settings. The integrated LFD mechanism not only detects faults but also de-energizes the affected channel’s relay, preventing unsafe conditions . With configurable parameters like open/short circuit alarm thresholds, the MTL4516C adapts seamlessly to diverse sensor types, including inductive proximity switches and pressure sensors, across process automation systems.
3. Flexible Integration and Reliable Performance
The MTL4516C simplifies system integration with its DIN-rail mountable design and compatibility with 主流 DCS platforms like Honeywell C300 and Yokogawa CS3000 . The dual-channel architecture supports simultaneous monitoring of two independent processes, while changeover relay contacts allow versatile control of both normally open and closed circuits. The unit’s wide input voltage range (7–9V DC) ensures compatibility with various field sensors, while the low power dissipation (0.84W at 24V) reduces heat generation and extends component lifespan . LED indicators for power, channel status, and faults enable quick diagnostics, streamlining maintenance workflows. Compared to competitors like Pepperl+Fuchs or Siemens, the MTL4516C stands out with its high-density packaging (two channels in a compact module) and integrated LFD, eliminating the need for external fault detection devices . This combination of advanced features, rugged construction, and ease of use makes the MTL4516C a preferred choice for mission-critical applications demanding both safety and operational efficiency.
| Category | Specification |
| Certifications | - Zone 0, IIC, T4-T6 (ATEX/IECEx)2
- SIL2 (single use) / SIL3 (redundant) per IEC 615082
- NAMUR-compliant (BS EN 60947-5-6:2001)2 |
| Channels | Dual-channel design for independent monitoring of two hazardous-area sensors26. |
| Input Parameters | - Sensor Voltage: 7–9V DC (1 kΩ ±10%)2
- Activation Threshold: >2.1 mA (<2 kΩ input resistance)26
- Deactivation Threshold: <1.2 mA (>10 kΩ input resistance)26
- Hysteresis: 200 µA (650 Ω nominal)26 |
| Output Parameters | - Relay Contacts: Changeover (NO/NC) with 10W, 0.5A, 35V DC (safe area) / 10W, 0.5A, 35V DC (Zone 2)6
- Load Compatibility: 30V DC / 200 mA (solid-state relay)4
- Fail-Safe Operation: Relay de-energizes on fault detection26 |
| Line Fault Detection (LFD) | - Detects open/short circuits in field wiring via LED indicators26
- Short-Circuit Alarm: Triggers at <100Ω, clears at >360Ω2
- Automatic Channel Isolation: Faulty channel relay de-energizes to prevent unsafe conditions26 |
| Power Requirements | - Supply Voltage: 20–35V DC4
- Power Consumption: ≤1.3W (≤35mA at 24V DC)24
- Galvanic Isolation: 250V AC (input/output/power)4 |
| Mechanical Specifications | - Mounting: DIN-rail (35mm)4
- Dimensions: 1.58cm (W) × 10.98cm (H) × 12.36cm (D)2
- Weight: <0.2kg (estimated) |
| Environmental Conditions | - Operating Temperature: -20°C to +60°C4
- Storage Temperature: -40°C to +80°C4
- Humidity: 5–95% RH (non-condensing)4
- Vibration/Shock Resistance: Compliant with IEC 60068-2-6/29 standards |
| Interface Compatibility | - Field Sensors: Inductive proximity switches, pressure sensors, and NAMUR-compliant devices26
- Control Systems: Compatible with 主流 DCS platforms (e.g., Honeywell C300, Yokogawa CS3000)2 |
| Differentiating Features | - High-Density Design: Two channels in a compact module, reducing panel space2
- Integrated LFD: Eliminates need for external fault detection devices2
- Phase Reversal Control: Selectable via side-mounted switches |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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