ABB DI801

Product Features

ABB DI801 features 16 24V DC input channels, supporting current sink signals, with each channel capable of independently monitoring switch status, making it suitable for connecting multiple discrete devices simultaneously.

ABB DI801 supports dry contacts (passive contacts) and wet contacts (active signals), compatible with PNP/NPN type sensors, and allows signal type configuration via DIP switches or software.

ABB DI801 can adapt to complex power supply environments in industrial settings with an 18-30V DC wide voltage input range.

The typical response time is ≤10ms, meeting the real-time monitoring requirements for quickly starting and stopping equipment.

Channel-to-channel isolation voltage is 50V, and system-to-ground isolation voltage is 500V AC, effectively resisting interference and protecting equipment.  

Each channel is equipped with an LED indicator light, displaying the real-time status of signal connection/disconnection. In case of module failure, an alarm signal is sent via the backplane bus.  

ABB DI801 can monitor power supply voltage, channel short circuit/open circuit, support wire break detection, and EMC protection, ensuring long-term stable operation.

ABB DI801 supports online module replacement without downtime, significantly reducing maintenance time and costs while enhancing system availability.  

Product Using Principle

ABB DI801 receives switch signals from field devices through 16 channels. The signals are isolated by current-limiting resistors and optocouplers before entering the module.

ABB DI801 converts the signals into 0/1 digital signals using a level comparator and stores them in internal registers.

ABB DI801 transmits the signals to the controller via Profibus DP or the backplane bus, while the module also feeds back the channel status (normal/fault) to the control system.

ABB DI801 can perform logical operations based on the input signals and output commands to the actuators, forming a complete control loop.

Product Application

In the chemical and pharmaceutical industries, ABB DI801 can monitor the start/stop status of reactor agitators and the position of valve limit switches to ensure the safety of production processes.

In the power industry, ABB DI801 can collect generator circuit breaker status and transformer temperature alarm signals to enable remote monitoring of power equipment.

In the oil and gas industry, ABB DI801 can detect pipeline pressure switch and compressor fault signals, ensuring the stability of oil and gas transportation.

In mechanical manufacturing, ABB DI801 can monitor the input signals from machine tool emergency stop buttons and conveyor belt deviation sensors, enhancing the safety of the manufacturing process.

ABB DI801 can be used for access control system switch status and fire alarm signal collection, optimizing building energy management.

Product Parameter

Here is ABB DI801 Digital Input Module detail.