ABB DI620 3BHT300002R1 Digital Input Modules

The ABB DI620 3BHT300002R1 is a digital input module designed for use in ABB Freelance DCS and compatible control systems. This module provides 32 channels of 24 V DC digital input capability, allowing seamless monitoring of field signals such as switch positions, sensor states, and binary process statuses. With its modular design and robust industrial-grade construction, the DI620 enables high-density digital signal acquisition and is ideal for applications demanding reliability, precision, and compact system architecture.

Key Features

• 32-channel 24 V DC digital input module

• Fast signal scanning for time-critical applications

• Status indication via channel-specific LEDs

• Suitable for sink/source signal types

• Integrated overvoltage protection for industrial use

• Easy configuration using ABB Freelance engineering tools

• Hot-swap support with controller power on

• Compact form factor for high-density installations

Technical Specifications

Industry Applications

The ABB DI620 module is suitable for various industrial sectors where reliable digital signal acquisition is essential:

• Power Generation – Monitoring of breakers, relays, and interlocks

• Water Treatment – Signal capture from pumps, valves, and switches

• Oil & Gas – Remote signal interfacing in pipeline SCADA systems

• Pharmaceuticals – Cleanroom automation and process interlock monitoring

• Manufacturing – Conveyor control, robotic station feedback

• Metals and Mining – Harsh environment digital signal monitoring

Product Advantages

• High-density Input Capability – 32 channels reduce cabinet footprint

• Reliable Input Capture – Fast response time ensures accurate state detection

• Flexible Wiring Options – Supports both sourcing and sinking configurations

• Rugged Design – Withstands industrial noise, voltage surges, and harsh conditions

• Ease of Maintenance – Hot-swap capability reduces system downtime

• Lifecycle Support – Backed by ABB’s long-term product service and supply chain

Frequently Asked Questions (FAQ)

1. What does the DI620 module do?

   It reads 32 digital input signals from field devices and transfers them to the controller.

2. What voltage does it support?

   It supports a nominal 24 V DC input voltage, with a working range of 18–30 V DC.

3. Is the module isolated?

   Yes, channels are galvanically isolated from the system bus and each other.

4. What systems is the DI620 compatible with?

   It works with ABB Freelance DCS and Symphony Plus platforms.

5. Can I use both sink and source inputs?

   Yes, the module supports both wiring types depending on the external wiring configuration.

6. Does the DI620 have LEDs for diagnostics?

   Yes, each input channel has a dedicated LED to show signal status.

7. Is hot-swapping supported?

   Yes, the DI620 can be replaced without shutting down the system.

8. What is the typical response time?

   The input scanning response is typically under 5 milliseconds.

9. What certifications does it carry?

   It is CE marked and compliant with RoHS and IEC 61131-2.

10. Where is the DI620 typically installed?

    It is DIN rail or backplane mounted inside an automation cabinet.