ABB 1MRK000508-BD BINARY INPUT MODULE

ABB 1MRK000508 - BD is a binary input module, commonly used in industrial automation control systems. The following is its relevant information:

Functional use: It is mainly used to connect various devices with switch signal output on site to the control bus, such as smoke exhaust valves, air supply valves, fire dampers and other equipment. By collecting and converting the switch signals of these devices, they are transmitted to the control system to monitor and control the status of on-site equipment.

Working characteristics:

Working voltage: The bus voltage is 24V and the power supply voltage is DC 24V.

Current consumption: In the monitoring state, the bus current is ≤1mA and the power supply current is ≤5mA; when in action, the bus current is ≤3mA and the power supply current is ≤20mA.

Wire system: It is connected to the controller with a non-polarity signal two-bus and connected to the DC 24V power supply with a non-polarity power supply two-bus. This connection method facilitates the wiring and installation of the system and reduces faults caused by incorrect wiring polarity.

Output characteristics: There is a pair of normally open and normally closed contacts in the module. The capacity of the passive output contact is DC 24V/2A. The contact resistance is 100kΩ under normal conditions. It is closed when started and is suitable for 12-48V DC or AC. There are two output control modes: pulse and level. It can be output through the normally open contact of the relay or active output. The relay pull-in time is 10s when the pulse is started, which can meet the control requirements of different field equipment.

Other features: The module uses an electronic encoder for encoding, which is convenient for users to set the address and configure the parameters of the module. At the same time, the module is also equipped with a switch signal input terminal, which can be connected to the switch contact of the field equipment to confirm whether the field equipment is in action. The input and output have a line detection function, which can detect the on-off status of the line in time and improve the reliability and stability of the system.