MTL MTL5523 Solenoid Driver with Line Fault Detection

Product Overview

The MTL MTL5523 provides reliable interface control between safe and hazardous areas. This robust module enables volt-free contacts or logic signals to safely control on/off devices in explosive atmospheres. 

Key Features

• The MTL MTL5523 controls hazardous area devices from safe area signals
• It features automatic line fault detection (LFD) for open or short circuits
• The interface drives solenoids and other loads with 48mA current limit
• Three LED indicators show power, output status, and fault conditions
• Earth fault detection is available using MTL4220 accessory
• Fast response time ensures output stability within 100ms

Technical Specifications

• Brand: MTL
• Model: MTL5523
• Hazardous Area Certification: Zone 0, IIC, T4-6 / Div 1, Group A
• Output Voltage Range: 13.6V to 24V
• Current Limit: 48mA minimum
• Output Ripple: < 0.5% peak to peak
• Response Time: Within 100ms to 10% of final value
• Power Consumption: 100mA at 24V DC
• Power Dissipation: 1.2W typical, 2.0W maximum

Control Input Characteristics

• Accepts switch contacts, open collector transistors, or logic signals
• Internal contact wetting voltage: 12V at 0.2mA
• Output turns on when input voltage < 1.4V
• Output turns off when input voltage > 4.5V
• Not suitable for voltage control via series diode
• Provides reliable switching for various control sources

Line Fault Detection

• Detects open or short circuits in field cabling
• LFD transistor switches on when circuit impedance is 55Ω to 4kΩ
• Maximum off-state voltage: 35V
• Maximum off-state leakage current: 10μA
• Maximum on-state voltage drop: 2V
• Maximum on-state current: 50mA
• Solid-state switch signals fault conditions

Safety Specifications

• Uo: 25V
• Io: 147mA
• Po: 0.92W
• Um: 253V RMS or DC
• Designed for maximum safety in hazardous locations
• Complies with international safety standards