Description

ABB DO820 S800 I/O system Digital output module

Characteristics
Electrical characteristics: The output is 230V AC/DC, the signal specification is between 5 and 250V AC/DC, the maximum continuous output current is 3A, the power factor is greater than 0.4, and the DC is 42W.
Channel configuration: It features 8 digital output channels, which are isolated from each other. Each channel is composed of a light isolation barrier, an output status indicator LED, a relay driver, a relay, and an EMC protection component.
Functional features: The relay power supply voltage monitoring function can obtain 24V voltage through the module bus. When the voltage disappears, an error signal will be given and the warning LED will light up. This monitoring function can be enabled or disabled through parameters.
Applicable scenarios: It is suitable for industrial automation control systems and can control on-site devices such as relays and solenoid valves. When paired with different module terminal units, such as TU811, TU813, TU831, etc., it can meet various application requirements.
Other features: It has the function of setting the output to a preset state during fault detection, which helps ensure the stability and security of the system.

Application field
Manufacturing industry
Production equipment control: It is used to control various equipment on the production line, such as the start and stop of conveyor belts, the movement of mechanical arms, and the clamping and releasing of fixtures, etc. For instance, in an automotive manufacturing workshop, the DO820 can precisely control the movements of welding robots to ensure the accurate progress of welding work.
Quality inspection equipment: In automated inspection equipment, it controls the start, stop and signal output of inspection instruments to achieve rapid detection and judgment of product quality. For instance, in the production of electronic products, control the light source switch and camera trigger of automatic optical inspection (AOI) equipment, etc.

Petrochemical industry
Process control: In the chemical production process, it controls the opening and closing of various valves to regulate parameters such as the flow rate, pressure and temperature of materials. For example, in the process of petroleum refining, precisely control the feed and discharge valves of the distillation column to ensure the stability of product quality.
Safety System: As part of the Safety Instrumentation System (SIS), when dangerous situations occur, such as excessively high temperature or excessive pressure, the DO820 can promptly trigger safety interlock devices, such as emergency shut-off valves and fire sprinkler systems, to ensure production safety.