The newplcdcs EMERSON SMART WIRELESS GATEWAY 1420A2A3A2 is a high-performance industrial wireless network controller engineered to connect self-organizing WirelessHART field devices with host automation systems. It provides secure, reliable real-time process data aggregation and seamless integration into plant-wide infrastructure.
M J Wilson Group
- ๐ Product Name: Emerson Smart Wireless Gateway
- ๐ Part Number (P/N): 1420A2A3A2 (1420 Series)
- ๐ Manufacturer: Emerson Electric / Rosemount
- ๐ Operating Voltage: 10.5V to 30V DC or Power over Ethernet (PoE)
- ๐ Current Draw: 1.2A nominal
- ๐ Dimensions: Approx. 240 mm x 180 mm x 90 mm
- ๐ Weight: 4.54 kg
Instrumart
- ๐ Country of Origin: United States / Singapore
- ๐ Power Rating: 25.5W maximum (PoE IEEE 802.3at)
Instrumart
- ๐ Installation Type: DIN rail mounting / Wall or pipe bracket enclosure integration
Emerson Electric

Application Fields
This wireless gateway is deployed extensively across oil and gas refineries, chemical processing plants, power generation stations, and remote water treatment facilities. It functions as the core central hub for bridging wireless pressure transmitters, temperature sensors, vibration monitors, and flow meters directly to distributed control systems (DCS) and asset management software without the expense of physical cabling.
Product Usage Precautions
Ensure that electrostatic discharge (ESD) safety protocols are strictly observed when handling the engineered polymer or aluminum enclosure in explosive atmospheres. Verify that the incoming power supply complies with the specified DC voltage limits or PoE IEEE standards to prevent internal component damage. All physical wiring, antenna positioning, and network provisioning must be executed by certified instrumentation personnel.
Emerson Electric
Parameter Settings & Modification Methods
Device configuration, network routing tables, and security keys are managed through the gateway’s built-in web server interface accessible via an encrypted Ethernet connection or secure browser link. Technicians can configure Modbus mapping, IP addressing, user accounts, and device provisioning lists. Settings are saved directly to non-volatile memory during configuration updates.
M J Wilson Group+ 1
Manual / Automatic Mode Switching
Operational states, shifting between network commissioning mode, active self-organizing data routing, and diagnostic testing, are managed dynamically through the gateway firmware. The system automatically optimizes wireless data paths and handles node integration without requiring manual path routing.
Instrumart
Emergency Stop Operation
In the event of a critical communication failure or security event, the wireless gateway executes robust layered security protections, including encryption and key verification, while maintaining fail-safe data buffering to prevent corrupted command propagation across connected host control systems.
Emerson Electric
Frequently Asked Questions (Q&A)
- Q: What indicates a network communication loss with field transmitters? A: Missing heartbeat updates on the web interface or an increase in dropped data packets typically points to physical obstructions, antenna misalignment, or excessive radio interference.
- Q: Can this gateway integrate with non-Emerson control systems? A: Yes, the unit supports standard industrial protocols including Modbus RTU, Modbus TCP, EtherNet/IP, and OPC, enabling straightforward connection to legacy host systems.
M J Wilson Group
- Q: How many wireless field devices can a single 1420 gateway support? A: Depending on the specific hardware capacity configuration ordered, models support up to 100 WirelessHART field devices.
S&V Samford Instruments Ltd.
Industry News & Development
Industrial automation sectors continue to embrace wireless mesh networking to cut installation costs and expand diagnostic coverage into previously inaccessible areas of the plant. Upgrading to advanced WirelessHART gateways allows facilities to enhance safety monitoring, improve predictive maintenance capabilities, and streamline data collection across sprawling industrial infrastructures.
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Emerson Electric
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M J Wilson Group
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