Description
MTL4514: Safe Area Relay Control with Line Fault Detection
The MTL4514 safely connects hazardous area sensors to safe area relays. It works with proximity detectors and switches in explosive areas. This module features built-in line fault detection and phase reversal selection. Perfect for critical applications requiring wiring integrity monitoring.
Technical Specifications
Brand: MTL
Model: 4514
Input Type: NAMUR proximity or dry contact
Sensor Voltage: 7-9V DC from 1kΩ
Output Relays: 2 changeover contacts (control + LFD)
Contact Rating: 10W, 0.5A, 35V DC
Response Time: 10ms maximum
Hazardous Rating: Zone 0, IIC, T6 / Div 1, Group A
Line Fault Detection: Open-circuit <50μA, Short-circuit <100Ω
Hysteresis: 200μA typical
Current Consumption: 25mA at 24V
Power Dissipation: 0.6W at 24V
Safety Parameters: Uo=10.5V, Io=14mA, Po=37mW
LED Indicators: Green (power), Yellow (output), Red (LFD)
Operating Temperature: -20°C to +60°C
Termination: Screw terminals
Mounting: DIN rail compatible
Certification: BS EN60947-5-6:2001 compliant
Warranty Protection
12-month warranty against defects. Reliable performance guaranteed.
Frequently Asked Questions
- What types of faults does it detect?
It detects both open-circuit (wire breaks) and short-circuit (wire shorts) conditions. - How are faults indicated?
Faults trigger the red LED and activate the separate LFD relay output. - Can I disable the line fault detection?
Yes, LFD can be enabled or disabled using the side switches. - What resistors are needed for switch inputs?
For contact inputs with LFD: 500Ω-1kΩ in series, 20kΩ-25kΩ in parallel. - What is the purpose of phase reversal?
It allows you to choose whether the sensor’s open or closed state triggers an alarm.
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