ABB 3BHT300002R1 DI620 Digital Input 32ch 24VDC

ABB 3BHT300002R1 DI620 Digital Input 32ch 24VDC

Core technical parameters

1. Electrical parameters

Working voltage: 24VDC DC power supply, this standard voltage matches the output voltage of a large number of sensors, 

switches and other devices in the industrial field, which ensures the compatibility of the module in various industrial environments. 

Whether it is 2-wire proximity switches, 3-wire photoelectric sensors, or other devices outputting 24VDC signals, 

all of them can be stably connected with DI620 module to achieve signal transmission. 

Input Signal Characteristics: With the de-jitter function, it effectively eliminates the signal jitter caused by mechanical vibration, 

electromagnetic interference and other factors, ensuring that the collected signals are true and reliable. 

The signal type is unipolar and compatible with 5V TTL signals, which can be adapted to a variety of different types of digital signal sources, 

thus widening the application range of the module. 

Current output: each channel can provide 8.3mA digital input signal, the current strength can ensure the stability of the signal in the transmission process, 

but will not cause excessive load on the front-end equipment, to ensure the accuracy of signal transmission. 

Signal Acquisition Time: The signal acquisition speed is extremely fast, usually less than 1ms. 

in industrial application scenarios that require high real-time performance, 

such as equipment status monitoring in high-speed production lines and rapid response safety interlocking systems, 

the DI620 module is able to quickly capture signal changes and transmit them to the control system in a timely manner, 

thus ensuring a fast response from the system. 

2. Physical Parameters

Dimensions: The module dimensions have been carefully designed, and the reasonable external dimensions enable it to effectively save space 

when installed in the control cabinet, facilitating compact layout with other equipment and enhancing the utilisation of space inside the control cabinet. 

Weight: light weight, whether in the initial installation process, or later maintenance and replacement, 

it is easy for operators to carry and install, reducing the difficulty and labour intensity of manual operation. 

3. Connection and communication parameters

Connection type: Terminal row connection is adopted, which has the advantages of solid connection, 

high reliability and easy maintenance. On-site wiring, the operator can use a screwdriver and other simple tools 

to quickly connect the external cable to the module terminal row; later line maintenance or replacement, plugging and unplugging 

the cable operation is also very convenient, effectively improving the maintenance efficiency. 

Communication interface: Built-in RS-485 interface, RS-485 is a kind of half-duplex communication interface,

 which has the characteristics of long transmission distance and strong anti-interference ability. 

Through this interface, DI620 module can communicate efficiently with other devices with the same interface to achieve data sharing and interaction; 

at the same time, it can be conveniently integrated into industrial networks based on RS-485 bus to transmit data stably with PLC, 

DCS and other control systems to ensure stable communication and consistent data of the whole automation system. 

4. Environmental parameters

Operating temperature range: It can work stably in the temperature range of - 25°C to + 60°C. 

This wide operating temperature range makes it suitable for various harsh industrial environments. 

Whether it is a high-temperature steel smelting workshop, chemical production equipment, 

or a low-temperature cold storage and refrigeration logistics equipment, the DI620 module can operate reliably 

and continue to collect digital signals for industrial automation systems. 

Storage temperature range: The module's performance and internal electronics remain undamaged in storage temperatures from - 40°C to + 70°C, 

guaranteeing reliability and availability of the product during transport, long term stocking and other phases.

Functional Features

1. High Reliability Design

High-quality materials and processes: As a leading global manufacturer of electrical equipment, 

ABB uses high-quality electronic components and advanced manufacturing processes in the production of DI620 modules. 

The internal circuit board of the module uses multi-layer wiring technology to effectively reduce interference between signals; 

the electronic components undergo strict screening and aging tests to ensure stability and reliability during long-term use. 

Strong anti-interference ability: In addition to the jitter function, DI620 module adopts multiple anti-interference measures at the hardware and software levels. 

On the hardware side, filtering circuits are set on the power input and signal input to suppress electromagnetic interference from the power supply 

and external environment; on the software side, advanced digital signal processing algorithms are applied to analyse 

and process the collected signals in real time to further improve signal accuracy and reliability. 

Fault diagnosis and self-protection: The module has a built-in perfect fault diagnosis function, which can monitor its own working status in real time. 

Once over-voltage, over-current, short-circuit and other abnormalities are detected, 

the self-protection mechanism is immediately activated to cut off the relevant channel signal inputs to prevent the expansion of the fault; 

at the same time, it sends fault alarm information to the upper control system, which is convenient for operators to overhaul in time. 

2. High-speed data transmission

Supporting high-speed data transmission rate, it can completely and accurately transmit the collected 32 digital signals to the control system in 

a very short time. In the industrial automation production line, the equipment running state is changing rapidly, 

the high speed data transmission capability of DI620 module enables the control system to obtain the latest state information of the equipment in real time, 

make control decisions in time, and ensure the continuous stability of the production process. 

For example, in the automated assembly line of automobile manufacturing, the robot arm movement needs to 

be accurately matched with the speed of parts delivery, DI620 module can quickly transmit the position signals of the parts detected by sensors, 

which helps the control system accurately control the movement of the robot arm and realise efficient and accurate assembly. 

3. Rich Diagnostic Functions

Signal processing and analysis: With powerful signal processing functions, it not only collects and transmits digital signals, 

but also conducts in-depth analysis of the signals. By analysing the trend of sensor signal changes, 

it can predict potential equipment failures, issue early warnings, and help operators take maintenance measures to 

avoid production interruptions caused by sudden equipment failures. 

Comprehensive diagnostic function: It can carry out comprehensive diagnosis on its own hardware status, communication status and signal input status. 

Through the diagnostic information, the operator can quickly locate the fault point and judge whether it is a problem of the module itself or 

a fault of the external line or equipment. For example, when a channel signal is abnormal, 

the diagnostic function can clearly indicate whether the channel input circuit is faulty or the connected sensor is damaged, 

which greatly shortens the fault investigation time and improves the efficiency of equipment maintenance. 

Predictive maintenance support: Based on the analysis and accumulation of a large amount of equipment operation data, 

the DI620 module provides powerful support for predictive maintenance. 

Through real-time monitoring of equipment operating parameters and comparison and analysis with historical data, 

it predicts the probability and time nodes of possible equipment failures in the future, assists enterprises in formulating scientific maintenance plans, 

prepares maintenance spare parts in advance, reduces equipment maintenance costs and extends the overall service life of the equipment. 

4. Easy to integrate and expand

Seamless compatibility with ABB systems: As a member of ABB automation product family, 

DI620 module is seamlessly compatible with various control systems of ABB, such as PLC, DCS and so on. During system integration, 

the module can easily achieve communication and data interaction with the control system without complex hardware configuration and software debugging, 

which reduces the difficulty and cost of system integration and improves the stability and reliability of the whole automation system. 

Flexible expandability: When the industrial automation system is upgraded or expanded, 

DI620 module can be easily combined with other ABB I/O modules. 

By increasing or decreasing the number of modules, 

the number of system inputs and outputs can be flexibly adjusted to meet the needs of industrial applications of different scales and complexity. 

For example, in a new factory automation project, with the expansion of the production scale, 

if you need to increase the monitoring and control functions of the equipment at a later stage, 

you only need to add DI620 modules or other related I/O modules to the original control system 

to achieve the system expansion without the need for a large-scale re-design and transformation of the entire control system.

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