TREXLHPNAWS1S Emerson Device Communicator PLUS with HART Wireless

The TREXLHPNAWS1S is part of Emerson’s AMS Trex™ Device Communicator series — rugged, handheld communicators designed to interface with smart field instruments using the HART® protocol, including WirelessHART® devices. It combines advanced field communication, diagnostics, device configuration, and operational support tools in one portable unit.

>8 hours

Installation and Safety Notes

Before Installation

• Qualified Personnel Only: Ensure only trained personnel handle installation and setup due to risks in electrical and hazardous environments. 
• Check Certification Ratings: Verify the communicator and field devices meet applicable certifications (i.e., ATEX, CSA, IECEx) and your application’s hazardous area classifications. 
• Power Off Equipment: Remove or de-energize loops before connecting to avoid accidental ignition or sparks.

Safety Precautions

• Explosive Atmospheres: Only use in certified hazardous locations; improper use may cause explosion hazards. 

• Intrinsic Safety: Follow intrinsic safety principles when connecting to live HART loops to prevent ignition sources. 

• Electrical Shock Risk: Exercise extreme caution when touching leads or terminals. Contact with live circuits can cause serious injury.

• Hardware Modifications: Do NOT modify or replace parts unless approved; unauthorized changes may compromise safety approvals.

• General Installation Steps

• Charge Battery: Fully charge the communicator battery before field use.
• Connect Leads: Attach HART communication leads to the appropriate terminals, ensuring proper polarity and loop resistance (e.g., 250 Ω resistors where required).
• Power Up: Power on the communicator and verify screen responsiveness. 
• Network Setup: Configure wireless (Wi-Fi/NFC) if needed and connect to field assets or host systems. 
• Test Communication: Confirm communication with the target device before performing diagnostics or configuration. 

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