MTL5546 MTL Isolating Driver For 4–20mA HART® Valve Positioners With Line Fault Detection

The MTL5546 accepts a 4/20mA floating signal from a safe-area controller to drive a current/pressure converter (or any other load up to 800Ω) in a hazardous area. For smart valve positioners, the module also permits bi-directional transmission of digital communication
signals so that the device can be interrogated either from the operator station or by a hand-held communicator. Process controllers with a readback facility can detect open or short circuits in the field wiring: if these occur, the current taken into the terminals drops to a presetlevel.
See also common specification
• Number of channels
One
• Location of I/P converter
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A, hazardous location
• Working range
4 to 20mA
• Digital signal bandwidth
500Hz to 10kHz
• Maximum load resistance
800Ω (16V at 20mA)
• Minimum load resistance
90Ω (short-circuit detection at < 50Ω)
• Output resistance
> 1MΩ
• Under/over range capability
Under range = 1mA
Over range = 24mA (load ≤ 520Ω)
• Input and output circuit ripple
< 40µA peak-to-peak
• Transfer accuracy at 20°C
Better than 20µA
• Temperature drift
< 1.0µA/°C
• Input characteristics
< 6.0V with the field wiring intact
< 0.9mA with the field wiring open or short-circuit
• Response time
Settles within 200µA of final value within 100ms
• Communications supported
HART®
• LED indicator
Green: power indication
• Maximum current consumption (with 20mA signals into 250Ω load)
35mA at 24V dc
• Power dissipation within unit (with 20mA signals into 250Ω load)
0.8W at 24V
• Safety description
V_o=28V I_o=93mA P_o=651mW U_m = 253V rms or dc

Achievers Automation Limited

We are a global supplier of quality automation and control components, dedicated to meeting the industrial control needs of businesses worldwide.

• Over12 years of industry experience.
• Operates a full range of industrial automation components and instruments, cooperating with more than 20 brands,ALLEN BRADLEY,Bently Nevada,MTL,E+H,SICK,P+F,IFM and  more.
• These customers hail from over 45 countries across the globe, spanning different continents and diverse industrial landscapes.

Products cover oil development, natural gas development and refining, power plants, new energy, pharmaceutical plants and other industrial fields. Included flow meter,pressure tester,safety barriers,auto mation,valve control and Programmable Logic Controllers (PLC), Distributed Control Systems (DCS), Human Machine Interfaces (HMI), Measuring Instruments and other field instruments are part of the comprehensive product portfolio offered by Achievers Automation Limited to its customers.

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