MTL Instruments MTL5051 Hazardous Area Communicator

MTL5051 Serial Data Communication Interface

The MTL5051 from MTL Instruments enables bi-directional serial data communication between safe area computer systems and hazardous area instrumentation. This versatile interface provides floating DC power and serial communications for MTL640 series text displays, keyboards, mice, and other IS instrumentation. 

Key Technical Specifications

• Brand: MTL Instruments
• Model: MTL5051
• Product Type: Serial Data Communication Interface
• Communication: Bi-directional serial data
• Safe Area Protocols: RS232 or RS422
• Baud Rate: Up to 19.2 kbaud
• Power Supply: Floating DC with communications

Hazardous Area Certification

• Equipment Location: Zone 0, IIC, T4-T6 hazardous area
• Division Rating: Division 1, Group A hazardous location
• The MTL5051 maintains intrinsic safety for connected devices
• It enables safe data communication in explosive atmospheres

Communication Modes & Compatibility

• MTL640 Series Mode: 3V signal on 12V supply to hazardous area
• Across Hazardous Area Mode: 10mA current source bidirectional
• IS RS232/TTL Mode: RS232-compatible signal levels
• Supported Devices: MTL643, MTL644, MTL646, MTL647 text displays
• Additional Support: Keyboards, mice, and other IS instrumentation

Hazardous Area Power Supply

• +12V Mode: 12.0V ±5% (load <23mA)
• +12V High Load: 8.0V minimum (load 23-50mA)
• +5V Mode: 5.6V ±5% (load 23-50mA)
• Voltage Selection: Switch on top of unit selects 5V or 12V output

Performance Specifications

• Communication Bandwidth: 1200 to 9600 baud (643/4 mode)
• Maximum Baud Rate: Up to 19.2 kbaud (other modes)
• Power Dissipation: 1.7W at 24V with 25mA load
• Current Consumption: 90mA at 24V with 25mA load

Terminal Configuration & Modes

• Terminal 1: Common for all modes
• Terminal 2: V signal / 5V-12V supply
• Terminal 3: I return / Rx
• Terminal 4: Tx in communications mode
• Terminals 5-6: Tx/Rx for other IS devices
• Switches 1a-1b: Mode selection between MTL640, Comms, and Other IS devices

Safety Parameters

• Multiple Configurations: Various terminal combinations with specific safety ratings
• Maximum Voltage: Up to 20V depending on terminal usage
• Power Limits: Ranging from 70mW to 810mW based on configuration
• Current Limits: From 35mA to 227mA depending on terminal usage

Frequently Asked Questions

• What devices does the MTL5051 support?
  It supports MTL643, MTL644, MTL646, MTL647 text displays, keyboards, mice, and other IS instrumentation.
• What communication protocols are available?
  It supports RS232 and RS422 protocols with baud rates up to 19.2 kbaud.
• Can it communicate across hazardous areas?
  Yes, it can be used in pairs for full-duplex data transmission across hazardous areas.
• What power outputs are available?
  It provides selectable 5V or 12V power for connected hazardous area devices.

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