NW-BM85S485 RS-485 Multiplexer Module Quantum Series Schneider

Schneider Electric NW-BM85S485 Modicon Quantum Multiplexer Bridge Module

Communication Protocol & Data Performance

• Manufacturer Schneider Electric equips the NW-BM85S485 with native Modbus RTU protocol over RS-485.
• Data rate reaches 115.2 kbps maximum for fast and deterministic serial communication.
• Four integrated ports allow multiplexing of multiple Modbus RTU devices on one bridge.
• Module supports both Modbus Plus and standard Modbus RTU communication profiles.
• RJ45 connector provides standardized and tool-free field wiring termination.

Electrical Specifications & Isolation

• Operating voltage accepts 12–24V DC with wide tolerance for industrial power supplies.
• Power consumption remains below 1 watt, minimizing heat generation in dense racks.
• Galvanic isolation protects sensitive control circuits from ground loops and voltage transients.
• Shielded twisted pair cable requirement ensures robust noise immunity in electrically noisy environments.
• Module also accepts 115–220V AC supply for installations with available AC power.

Environmental Tolerance & Physical Dimensions

• Operating temperature spans -20°C to +70°C, suitable for unenclosed factory floor placement.
• Storage temperature extends from -40°C to +85°C for safe warehousing in extreme climates.
• Relative humidity tolerance covers 5% to 95% non-condensing, resisting moisture intrusion.
• IP20 enclosure rating protects against solid objects larger than 12 mm.
• Compact form factor measures 100 mm length, 50 mm width, and 25 mm height.
• Net weight equals 2.07 kg (4.56 lbs) with robust metal housing for durability.

Mounting, Installation & Package Details

• Module mounts directly into standard Modicon Quantum racks using integral locking tabs.
• Plug-and-play RJ45 connections eliminate complex wiring and reduce commissioning errors.
• Individual package contains one factory-sealed NW-BM85S485 unit with documentation.
• Package 1 dimensions: 33.5 cm length, 28.5 cm width, 16.3 cm height, weight 2.836 kg.
• Bulk package 2 contains 10 units for large projects, shipping at 40 kg total weight.
• NexAuto maintains ready stock – orders dispatch within five working days.
• We ship worldwide via FedEx, UPS, or DHL with full tracking and insurance.
• Customers enjoy 30-day return privilege on unopened, original packaging items.

Frequently Asked Questions (FAQ)

• Is the NW-BM85S485 brand new and authentic?
  Yes, we supply only 100% original, factory-sealed Schneider Electric NW-BM85S485 modules. No refurbished or counterfeit goods.
• What is the difference between NW-BM85S485 and NW-BM85C485?
  The NW-BM85S485 specifically provides Modbus RTU over RS-485 with RJ45 ports, while other variants may use different physical layers or protocols.
• Can this module convert Modbus Plus to Modbus RTU?
  Yes, the NW-BM85 series performs protocol conversion between Modbus Plus and Modbus RTU/RS-485 networks.
• Do I need special software to configure the NW-BM85S485?
  No software configuration is required. The module operates as a transparent bridge with automatic baud rate detection.
• What cable specification works best with this module?
  Use shielded twisted pair cable with characteristic impedance of 120 ohms, typical for RS-485 installations.
• How does galvanic isolation improve system reliability?
  Isolation breaks ground loops and withstands up to 1500V transient surges, preventing damage to the Quantum backplane.
• Do you have the NW-BM85S485 in stock right now?
  Yes, we maintain real-time inventory. Our sales team confirms availability immediately and ships within five days.
• What is the return policy for this item?
  We accept returns within 30 days of delivery. The module must remain unopened in original anti-static packaging.

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