MTL 4549Y Dual-Output Intrinsically Safe Isolator with Fault Detection - Image 1

MTL 4549Y Dual-Output Intrinsically Safe Isolator with Fault Detection - Image 2

MTL 4549Y Dual-Output Intrinsically Safe Isolator with Fault Detection

Technical Specifications

Signal Parameters
- The input signal is a 4 – 20mA floating signal from the safe-area controller. The digital signal bandwidth ranges from 500Hz to 10kHz, which can meet the transmission needs of most industrial digital communication signals.
- The maximum load resistance reaches 800Ω at 16V and 20mA, and the minimum load resistance is 90Ω, with short-circuit detection activated when the resistance is less than 50Ω. The output resistance exceeds 1MΩ, ensuring stable signal output.
Accuracy and Stability
- The transfer accuracy is better than 20μA at 20°C, and the temperature drift is less than 1.0μA/°C, which minimizes signal distortion caused by temperature changes.
- The ripple of input and output circuits is less than 40μA peak, and the module settles to the final value within 100ms, ensuring rapid response to signal changes and stable transmission.
Safety and Functional Parameters
- It has an under-range capability within 1mA and an over-range capability of up to 24mA when the load is 520Ω or less. When a line fault occurs, the current entering the terminals drops to a preset level to protect the circuit.
- It achieves 253V AC or DC isolation between circuits, which can effectively prevent electrical interference between different circuits and ensure the safety of the system.

Category: Others

Description

- General Parameters
  - It adopts backplane mounting. Although specific power supply voltage parameters are not separately listed, it is consistent with the general 24V DC power supply standard of the same series.
  - The overall structure is compact, which is in line with the size characteristics of the MTL 4500 series modules and is convenient for intensive installation in control cabinets.
Functional Features
- Dual-Output Driving Capability
  - The module can drive two pieces of equipment in hazardous areas at the same time through one input signal. This dual-output design improves the efficiency of equipment deployment, reduces the number of modules needed in the system, and saves installation space and costs.
- Comprehensive Fault Detection Function
  - It is equipped with open-circuit and short-circuit detection functions for on-site lines. When such faults occur, the current in the terminals will drop to a preset level, which can be quickly identified by the process controller with readback function, helping maintenance personnel deal with faults in a timely manner.
- Bidirectional Digital Communication Support
  - It supports bidirectional transmission of digital communication signals for smart valve positioners. This function enables operators to remotely configure and monitor smart equipment in hazardous areas from the safe area without on-site operation, improving work efficiency.
- Reliable Functional Safety Performance
  - It meets the requirements of IEC 61508:2010 functional safety standards. It can achieve SIL2 for instrument loops in simplex architecture, and higher safety integrity levels can be obtained by adopting a voting architecture, which can meet the safety needs of most industrial control loops.
Application Scenarios
- Petrochemical Industry
  - It is installed in chemical production workshops and oil refining plants to connect safe-area controllers with electro-pneumatic converters and smart valve positioners on pipelines and reaction kettles in Zone 0 hazardous areas. It realizes precise control of valves and timely detection of line faults, avoiding safety accidents caused by equipment failure or signal interruption.
- Oil and Gas Extraction
  - On offshore oil platforms and onshore oil wells, it drives multiple actuators and converters in hazardous areas. Its intrinsic safety performance prevents ignition risks in explosive gas environments, and the dual-output function simplifies the system layout, ensuring the smooth progress of oil and gas extraction operations.
- Pharmaceutical and Chemical Industry
  - In pharmaceutical production lines involving flammable solvents and chemical reaction processes, it connects the central controller with the control components of the production equipment. The stable signal transmission ensures the accuracy of process parameters such as temperature and pressure, and the fault detection function avoids production accidents caused by signal line failures.
- Power Generation Industry
  - In coal-fired power plant boiler rooms and gas turbine rooms, it is used to connect the control system with the electro-pneumatic converters of gas and steam pipelines. It ensures the reliable transmission of control signals in high-temperature and potentially explosive environments, and its safety performance and fault detection function help maintain the stable operation of power generation equipment.
- Automated Manufacturing Workshops
  - In workshops with flammable dust or gas generated during the production process, it drives multiple actuators and positioners on the automated production line. The dual-output design adapts to the multi-equipment control needs of the production line, and the intrinsic safety characteristics eliminate safety hazards, ensuring the continuous operation of the automated production line.

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