Description
Product Overview
The 500PB101 1MRB178009R0001 1MRB200064/C is a professional-grade process barrier module, engineered to provide intrinsic safety (IS) protection for field instruments in hazardous areas. It acts as a critical interface between safe-area control systems, such as DCS or PLC racks, and equipment located in potentially explosive atmospheres (Zones 0, 1, 2 or Divisions 1, 2). The module utilizes a passive design with precision resistors and Zener diode barriers to limit the energy (voltage and current) that can reach the hazardous area, preventing the ignition of flammable gases or dust. The 500PB101 1MRB178009R0001 1MRB200064/C is typically used in pairs or groups within a dedicated termination assembly, providing a robust, reliable, and certified method for connecting analog signals like 4-20mA from transmitters or to valve positioners, ensuring compliance with international safety standards.
Technical Specifications
Parameter Value
Product Model: 500PB101 1MRB178009R0001 1MRB200064/C
Brand: ABB
Module Type: Zener Barrier, Intrinsic Safety Isolator
Application: 2-Wire Transmitter (4-20mA)
Hazardous Area Certification: ATEX, IECEx, UL/cUL (Class I, II, III, Div. 1 & 2)
Entity Parameters (Hazardous Side): Ui = 30 V, Ii = 150 mA, Pi = 1.1 W, Ci = 5 nF, Li = 0 mH
Safe Area Voltage (Us): 250 VAC/DC max
Operating Voltage: 24 VDC (typical system supply)
Maximum Output Current (Io): 24 mA (limited)
Internal Resistance: 100 Ω (typical)
Voltage Drop: Approx. 3.5 V @ 20 mA
Accuracy Impact: < 0.1% of span
Operating Temperature: -20°C to +70°C
Storage Temperature: -40°C to +85°C
Connection: Screw terminal, DIN-rail mountable
Housing Material: Flame-retardant polyamide (PA)
Protection Degree: IP20
Color: Blue (commonly for analog input)
Required Ground Connection: Dedicated, high-integrity safety ground (< 1 Ω)
pplication Scenarios
Oil & Gas Production and Refining: Protecting signals from pressure, temperature, and level transmitters located on wellheads, in processing units, or near storage tanks classified as hazardous areas.
Chemical and Pharmaceutical Manufacturing: Providing safe interconnection for analytical sensors and measurement devices installed in areas with potential solvent or powder explosions.
Grain Handling & Food Processing: Safeguarding instrumentation in areas with combustible dust atmospheres, such as silos, mills, and mixers.
Paint & Coating Facilities: Isulating control signals for equipment operating in spray booths or mixing rooms where flammable vapors are present.
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