140NOM21200 Schneider Electric DIO Head-End Adaptor Modicon Quantum

Schneider Electric 140NOM21200 DIO Head-End Adaptor | Dual Redundant Modbus Plus for Quantum

• Redundant communication ports: The 140NOM21200 features two Modbus Plus RS485 ports over twisted pair copper. These ports support redundant network paths. It also includes one Modbus RS232 port. All Modbus Plus ports run at 1 Mbit/s.
• I/O capacity: It supports 30 input words and 32 output words. This allows efficient data exchange with remote I/O drops in redundant configurations.
• Product compatibility: This adaptor works with 140CRA21220 and 140CRA21210 remote I/O adaptors. These are the redundant-capable remote drops for the Quantum platform.
• Power and reliability: It consumes 4 watts of power. The bus current draw is 780 mA. It performs checksum, RAM, and processor verification for reliable operation.
• Built for demanding environments: It operates from 0 to 60 °C (32 to 140 °F). It holds marine certifications including DNV, GL, RINA, and RMRS. It also meets UL 508, CSA, FM Class 1 Division 2, C-tick, and GOST standards. It withstands 10 V/m electromagnetic fields and 8 kV electrostatic discharge.
• Easy installation: The standard Quantum format fits any rack slot. IP20 protection suits cabinet mounting. It works up to 5000 meters altitude with 95% non-condensing humidity.

Key specifications

• Brand: Schneider Electric
• Model: 140NOM21200
• Type: DIO head-end adaptor with redundant Modbus Plus
• Ports: 2 x Modbus Plus RS485 (twisted pair copper, redundant) + 1 x Modbus RS232
• Transmission rate: 1 Mbit/s (Modbus Plus)
• I/O words: 30 input / 32 output
• Compatible with: 140CRA21220, 140CRA21210
• Power dissipation: 4 W
• Bus current: 780 mA
• Operating temp: 0…60 °C (32…140 °F)
• Storage temp: -40…85 °C (-40…185 °F)
• Humidity: 95% non-condensing
• Altitude: up to 5000 m (16404 ft)
• EMI immunity: 10 V/m (80…2000 MHz)
• ESD immunity: 8 kV air / 4 kV contact

Frequently asked questions

• Q: What is the difference between 140NOM21100 and 140NOM21200?
  A: The 140NOM21200 offers two redundant Modbus Plus RS485 ports for high availability. The 140NOM21100 has a single Modbus Plus port. Both support 30 input and 32 output words.
• Q: Which remote I/O adaptors work with this head-end?
  A: The 140NOM21200 works with 140CRA21220 and 140CRA21210 remote I/O adaptors. These are designed for redundant Modbus Plus networks.
• Q: Can I remove the adaptor while the rack is powered?
  A: No. You must turn off the rack power before installing or removing the adaptor. Hot swapping can cause damage to the module or backplane.
• Q: What is the maximum cable length for Modbus Plus?
  A: Modbus Plus over twisted pair copper supports up to 450 meters per segment with proper termination. Redundant paths should follow the same guidelines.
• Q: Is this adaptor suitable for marine applications?
  A: Yes. The 140NOM21200 holds marine certifications including DNV, GL, RINA, and RMRS. It is approved for shipboard and offshore installations.
• Q: Do you have stock? How fast can you ship?
  A: Yes, we keep new original units in stock. We ship within 5 business days after payment. We use DHL, FedEx, or UPS.
• Q: Can I return it if I change my mind?
  A: Yes. You can return the adaptor within 30 days. It must be unused and in the original box.