MTL MTL5514 Switch/Proximity Detector Interface

The MTL5514 Proximity Detector Interface is engineered for controlling loads in safe areas within hazardous environments. Its design accommodates proximity detectors or switches located in risk-prone areas, ensuring optimal safety and functionality. With user-selectable line fault detection and status indicators, the MTL5514 provides comprehensive monitoring and reliability. Its compact design allows for easy installation while conforming to industry standards for proximity detectors.

General Info

• Manufacturer: Eaton Electric Limited
• Model Number: MTL5514
• Type: Proximity Detector Interface
• Number of Channels: One
• Output Signal Type: Relay output
• Compatibility: Supports proximity detectors per BS EN60947–5–6:2001 standards (NAMUR)

Features

The MTL5514 boasts several key advantages, such as:

• Single Channel Operation: Enables simple integration into existing systems while controlling loads in hazardous locations.
• User-Selectable Line Fault Detection: Provides enhanced safety by indicating line faults via LED status indicators, ensuring proactive maintenance and reducing downtime.
• Versatile Voltage Range: The device operates with a voltage supply of 7 to 9V DC, compatible with various proximity detectors.
• High Safety Standards: Certified for use in Zone 0, IIC, T4–6 hazardous areas, the MTL5514 meets stringent safety requirements for industrial applications.
• Robust Relay Characteristics: Equipped with a single pole relay featuring changeover contacts, ensuring reliable operation in safe and hazardous areas.

Technical Specifications

General Specifications

• Number of Channels: One
• Voltage Applied to Sensor: 7 to 9V DC from 1kΩ ±10%
• Location of Switch: Zone 0, IIC, T6 hazardous area; Div.1, Group A hazardous location
• Location of Proximity Detector: Zone 0, IIC, T4–6 hazardous area if suitably certified; Div.1, Group A hazardous location

Input Specifications

• Hazardous Area Inputs: Inputs conforming to BS EN60947–5–6:2001 standards for proximity detectors (NAMUR)

Input/Output Characteristics

• Normal Phase:
  • Outputs Closed if Input: > 2.1mA (< 2kΩ in input circuit)
  • Outputs Open if Input: < 1.2mA (> 10kΩ in input circuit)
• Hysteresis: 200µA (650Ω) nominal

Line Fault Detection (LFD)

• User-Selectable: Via switches on the side of the unit
• LED Indicators: Line faults are indicated by an LED

Open-Circuit Alarm

• On: if Iin < 50µA
• Off: if Iin > 250µA

Short-Circuit Alarm

• On: if Rin < 100Ω
• Off: if Rin > 360Ω

Required Resistors for LFD

• Series with Switch: 500Ω to 1kΩ
• Parallel with Switch: 20kΩ to 25kΩ

Output Specifications

• Channel: Single pole relay with changeover contacts

Relay Characteristics

• Response Time: 10ms maximum
• Contact Rating (Safe Area):
  • 10W, 0.5A, 35V DC
  • 250V AC, 2A, cosØ >0.7, 40V DC, 2A resistive load
• Contact Rating (Zone 2):
  • 10W, 0.5A, 35V DC
  • 35V, 2A, 100VA

LED Indicators

• Green: Power indication
• Yellow: Channel status (on when output energized)
• Red: LFD indication (on when line fault detected)

Power Specifications

• Maximum Current Consumption: 25mA at 24V DC
• Power Dissipation Within Unit: 0.6W at 24V

Safety Description

• Safety Parameters:
  • Uo: 10.5V
  • Io: 14mA
  • Po: 37mW
  • Um: 253V RMS or DC

SIL Capability

• SIL2 Capable: for a single device (HFT=0)
• SIL3 Capable: for multiple devices in safety redundant configurations (HFT=1)