ABB TD 951F 3BDH001020R0001 LCD Display

Technical Specifications

Product Overview

The ABB TD 951F (3BDH001020R0001) is a compact backlit LCD display unit engineered for the ABB Freelance DCS. This panel-mount interface provides fast, real-time process visualization and essential diagnostic data directly at the machine level.

Core Technical Advantages

• Dual Serial Ports: Integrated RS-232 and RS-485 interfaces for direct or multi-drop networking.
• Power Protection: Supports 24 V DC input with a wide ± 20% tolerance against grid sags.
• Climate Hardened: Built to operate reliably in ambient temperatures from -20°C to +55°C.
• Space Saving: Slim 22 mm physical depth allows easy installation in shallow enclosures.

Installation Guide

Mount the unit into a standard 58 mm × 110 mm panel cutout and tighten the clamps to secure the IP65 front seal. Use 0.5 mm² (20 AWG) wiring to connect the 24 V DC supply to the screw terminals. Route all RS-232 and RS-485 serial cables away from high-voltage AC lines to prevent signal interference.

Technical FAQs

Q1: Does the unit support RS-232 and RS-485 simultaneously?
A1: No. Select either RS-232 for point-to-point lines or RS-485 for multi-drop networks during physical installation.

Q2: What is the minimum operating voltage threshold?
A2: Due to the ± 20% input tolerance, the hardware functions reliably down to a minimum of 19.2 V DC.

Q3: Is the back of the housing waterproof?
A3: No. Only the front face meets IP65 specifications. Install the unit inside an appropriate enclosure to protect the rear terminals.