ABB 3BDH000730R1 Binary Input Module

ABB's 3BDH000720R1 is a binary input module that belongs to the Symphony Plus system. Here is some information about it:

Functional features

Signal acquisition and conversion: Mainly used to collect binary signals from external devices, such as switch on and off, sensor triggering and other signals, and convert these signals into digital signals that can be recognized and processed by the Symphony Plus system so that the system can perform logical operations, monitoring and control and other operations.

Channel configuration: Usually has multiple input channels, can simultaneously connect the signal output ends of multiple external devices, and realize the simultaneous acquisition and processing of multiple binary signals.

Electrical isolation: In order to ensure the stability and safety of the system, this module generally has an electrical isolation function, which can isolate the electrical signals of external devices from the control system, prevent external interference signals from entering the control system, and also avoid electrical faults of the control system from affecting external devices.

Technical parameters

Input signal type: Supports multiple types of binary input signals, such as DC voltage signals (commonly 24V DC, etc.), dry contact signals, etc.

Input voltage range: For example, for a 24V DC input signal, the allowable voltage range may be ±10% or wider to accommodate different on-site power supply conditions and signal fluctuations.

Input current: The input current of each input channel is usually in the milliampere level, and the specific value depends on the module design and input signal type.

Number of channels: Generally, there are different specifications such as 8 channels and 16 channels to meet the requirements for the number of input signals in different application scenarios.

Response time: The module responds to the input signal quickly, usually in milliseconds, and can transmit the changes of external signals to the control system in a timely manner.

Isolation characteristics: It has a higher isolation voltage, such as 2500V AC or higher, to ensure the effectiveness of electrical isolation.

Application scenarios

Industrial automation production line: used to monitor the operating status of various equipment on the production line, such as motor start/stop, valve opening/closing, limit switch triggering, etc., to provide real-time status information for the automation control system for logical control and process monitoring.

Power system: In substations, distribution rooms and other places, the opening and closing status of switchgear and the action signals of protection devices can be collected to monitor the operation status of the power system and diagnose faults.

Process control system: In chemical, petroleum, metallurgical and other process industries, it is used to collect switch quantity signals of field instruments, such as liquid level switches, pressure switches, temperature switches, etc., and participate in the logical operation and interlocking protection of process control.