Schneider Electric AS-B872-002 Modicon 984 Analog Output Module

Schneider Electric AS-B872-002 Modicon 984 Analog Output Module

Key technical specifications

• Manufacturer: Schneider Electric from the Modicon 800 Series I/O family.
• Model number: AS-B872-002 – dedicated analog output module with four points.
• Output type: analog current, 4 to 20 mA per channel, suitable for actuators and transducers.
• Number of outputs: four individually isolated channels, each with its own signal path.
• Electrical isolation: outputs fully isolated from the controller logic for noise immunity.
• Status indicators: front‑panel LEDs show channel activity and module health at a glance.
• Module handle: built‑in handle simplifies insertion and removal from the I/O rack.
• Front panel: non‑conductive protective cover adds safety during maintenance.
• Net weight: 0.60 kg (1.31 lb) – robust construction for industrial longevity.

Environmental ruggedness and compliance

• Operating environment: designed for harsh plant‑floor conditions with dust, humidity, and temperature variations.
• Surge withstand capability: meets IEEE and ANSI standards, protecting against transient overvoltages.
• Temperature range: operates from 0 °C to 60 °C; storage from -40 °C to 85 °C.
• Humidity tolerance: 5 % to 95 % non‑condensing, ensuring reliability in damp locations.
• Vibration and shock: tested to industrial standards for continuous operation in machinery.

Frequently asked questions

• Can I use the AS-B872-002 with Modicon Quantum or Momentum controllers?
  The AS-B872-002 is specifically designed for the Modicon 984 Series with 800 Series I/O; other families require different modules.
• What is the maximum load resistance for the 4‑20 mA output?
  Each channel can drive loads up to 600 Ω at 20 mA, typical for most analog actuators.
• Does the module provide loop power for two‑wire transmitters?
  No, the AS-B872-002 is an output module; it does not supply loop power for field devices.
• How do I interpret the LED status indicators?
  A steady green LED indicates the channel is active and within range; off means no output or a fault condition.
• Is the module hot‑swappable in a live system?
  Schneider Electric recommends powering down the rack before inserting or removing the module to avoid damage.
• What certifications does this output module hold?
  It meets IEEE and ANSI surge standards and is UL/CSA recognized for industrial control equipment.

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