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Hazardous Area Communication Interface | MTL5051

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About the Product

MTL5051 Hazardous Area Communication Interface

Bi-directional RS232/RS422 to Intrinsically Safe Devices

Core Capabilities

  • ✔ Dual-mode operation: Display & Data Communication
  • ✔ Supports MTL640 Series displays & other IS devices
  • ✔ Configurable 5V/12V field power supply
  • ✔ Three communication protocols in one unit

Key Specifications

Baud Rates:
• 1200-9600 baud (MTL643/4)
• Up to 19.2k baud (other modes)

Power Consumption:
• 90mA @24V (25mA load)
• 1.7W max dissipation

Technical Details

Operating Modes
MTL640 Display Mode

To Field: 3V signal on 12V supply
From Field: 5mA signal modulation

Cross-Area Communication

Bi-directional: 10mA current source
Distance: Optimized for long cables

RS232/TTL Mode

Compatibility: Keyboards/Mice
Voltage: Selectable 5V/12V

Terminal Configuration
MTL640 Mode
Comm Mode
Other IS Devices
Terminal Function
1 Common
2 V signal
3 I return

Safety & Certifications

Hazardous Area Ratings

• Zone 0, IIC, T4-T6
• Div 1, Group A

Power Limitations

• 14V, 800mW (Terminals 1-4)
• 20V, 810mW (All terminals)

Typical Applications

Process Displays

MTL643/644/646/647 text displays in explosive areas

Remote Monitoring

Bi-directional data across hazardous boundaries

IS Peripherals

Keyboards, mice and other RS232/TTL devices

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  • Custom Calibration: Provide your specifications, and we’ll handle the rest with precision.
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