German Bihl+Wiedemann plug Bihl+Wiedemann model Bihl+Wiedemann price

Bihl+Wiedemann plug is a control module that can output signals or provide a switching signal to actuate controlled equipment when control is required, while also receiving feedback signals from the equipment to report to the host. It is an important component of fire alarm linkage systems. Input/output modules available on the market can provide a pair of passive normally open/normally closed contacts to control the equipment. Some manufacturers' modules can be configured via parameters for active output (such as GST GST-LD-8301), and there are corresponding dual input/output modules, multi-input/output modules, etc. In the event of a fire alarm, the alarm controller activates external linked devices such as smoke exhaust valves, air supply valves, fire shutters, fans, and sirens through the output module, and can receive action confirmation from the devices. The output module is connected to the controller's loop bus and can be installed near the controlled equipment or inside the floor terminal module box. Electronic coding allows for on-site addressing. The output control logic of the output module can be programmed according to project requirements. When the controller receives an alarm signal from a detector, it sends linkage control signals to the output module via the bus according to the pre-programmed procedure; the output module then activates the required fire protection equipment, and receives a confirmation signal after the device acts.

Bihl+Wiedemann plug composition

The fieldbus control system consists of three parts: measurement system, control system, and management system, with the hardware and software of the communication part being its most distinctive feature. 1) Fieldbus control system: Its software is an important part of the system. Control system software includes configuration software, maintenance software, simulation software, device software, and monitoring software. First, select development configuration software and human-machine interface software for control operations. Through the configuration software, complete the connections between function blocks, select function block parameters, and perform network configuration. During network operation, the system collects data in real time, processes data, and performs calculations. It optimizes control and logical control alarms, monitoring, display, reports, etc. 2) Fieldbus measurement system: Its characteristics include multi-variable high-performance measurement, enabling measuring instruments to have computing capabilities and other functions. Due to the use of digital signals, it has high resolution, high accuracy, strong anti-interference, and anti-distortion capabilities. It also provides status information of instrument equipment, allowing adjustments to the processing process. 3) Equipment management system: It can provide diagnostic information, management information, equipment operating status information (including smart instruments), and manufacturer-provided equipment manufacturing information for the equipment itself and the process. For example, Fisher—Rosemoune Company launched the AMS management system. Installed in the main computer, it performs management functions and can form a comprehensive management system information database for field devices. Based on this, equipment reliability analysis and predictive maintenance are realized, changing passive management into a predictable management and maintenance mode. The AMS software is based on a T architecture with the field server as the platform, supporting modular, feature-rich application software on the field server to provide users with a graphical interface. 4) Bus system computer service mode: The client/server mode is a popular network computer service mode. The server represents the data source (provider), and the application client represents the data user, which obtains data from the source and further processes it. The client runs on a PC or workstation. The server runs on a minicomputer or mainframe, using the intelligence, resources, and data of both parties to complete tasks. 5) Database: It can organically and dynamically store large amounts of data and applications, achieving full data sharing and cross-access with high independence. Industrial equipment parameters change continuously during operation, resulting in large data volumes and high real-time requirements for operation and control. Therefore, a distributed and real-time database system capable of mutual access and operation is formed. Mature options on the market include relational databases such as Oracle, sybas, Informix, SQL Server; and real-time databases such as Infoplus, PI, ONSPEC. 6) Network system hardware and software: Network system hardware includes system management hosts, servers, gateways, protocol converters, hubs, user computers, and underlying intelligent instruments. Network system software includes network operating software such as NetWarc, LAN Mangger, Vines, server operating software such as Lunix, os/2, Window NT, application software databases, communication protocols, network management protocols, etc.

Bihl+Wiedemann plug classification

1) By shape: circular electrical connectors, rectangular electrical connectors. Circular electrical connectors are used most extensively in military equipment (aviation, aerospace) due to their structural characteristics. Rectangular electrical connectors are more commonly used on printed circuit boards of electronic devices due to their simple structure. 2) By structure: By connection method: threaded connection, bayonet (quick) connection, latch connection, push-pull connection, direct plug-in connection, etc.; By contact termination form: crimping, soldering, wire wrapping; screw (cap) fixation; By environmental protection: environmentally resistant electrical connectors and general electrical connectors. 3) By application: RF electrical connectors, sealed electrical connectors (glass-to-metal seal), high-temperature electrical connectors, automatic disconnect electrical connectors, filter electrical connectors, composite material electrical connectors, airport power electrical connectors, printed circuit board electrical connectors, etc.

Bihl+Wiedemann plug wiring method

1) Apply moderate force when tightening connections to prevent stripping the threads of bolts and nuts due to excessive force. Replace any stripped bolts and nuts immediately; do not continue using them. 2) When using a screwdriver to tighten or loosen screws, ensure the screwdriver fits tightly against the screw head before applying force to prevent slipping, which can damage the screw and make disassembly difficult, especially for common circuit breakers in distribution boxes. 3) If bolts or nuts are difficult to remove, do not act rashly to prevent deformation that makes removal even harder. Tap appropriately or apply screw loosening agents or dilute hydrochloric acid, then attempt removal after a short wait. 4) Do not use pliers to tighten or loosen bolts and nuts to prevent damage. When using an adjustable wrench, adjust the jaw opening properly to prevent damaging or deforming the bolts and nuts, which makes disassembly difficult. 5) A single terminal block allows a maximum of two wires of the same type and specification to be connected. 6) For terminal blocks prone to loosening or poor contact, wire ends must be fastened in a "?" shape to the terminal block to increase contact area and prevent loosening. 7) When connecting wire ends or lugs to each other, it is strictly prohibited to install non-copper or poorly conductive washers in between. 8) When connecting wire ends, the contact surface must be smooth and free of oxidation. When connecting lugs or copper bars, apply conductive paste to the cleaned contact surface before tightening. 9) When connecting temporary lines, single-strand flexible wires should be folded once at the end before connecting to the lower terminal of the circuit breaker; single-core solid wires should be connected to the lower terminal of the circuit breaker in a "?" shape. 10) For motor wiring of 30KW and above, it is required that no poorly conductive washers (such as galvanized nuts, flat washers, spring washers, etc.) be installed between the motor leads and the connecting cables. 11) When wrapping cables or other equipment requiring insulation protection with insulating tape, wrap from one end to the other with a 1/2 overlap ratio, ensuring at least one back-and-forth layer.

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