German BOSCH plug BOSCH model BOSCH price

BOSCH plug is a control module that can output signals or provide a discrete 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). Corresponding products include dual input/output modules and multi-input/output modules. During a fire alarm, the alarm controller activates external devices requiring linkage via output modules, such as smoke exhaust valves, air supply valves, fire shutters, fans, and alarm bells, 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 in the floor terminal block box. It uses electronic coding 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 transmits the linkage control signal to the output module via the bus according to the pre-programmed procedure. The output module then activates the linked fire protection equipment, and receives a confirmation signal after the device acts.

BOSCH plug introduction

Fieldbus is an open interconnection network that can interconnect with networks at the same layer or different layers, and can also enable sharing of network databases. Fieldbus embodies the characteristics of distribution, openness, interconnection, and high reliability, which are precisely the shortcomings of DCS systems. DCS typically transmits signals one-to-one; the analog signals used have low precision and are susceptible to interference. Operators in the control room often find it difficult to adjust parameters and predict faults for analog instruments, leaving them in an "out-of-control" state. Many instrument manufacturers define their own standards, resulting in poor interchangeability. The functions of these instruments are relatively single-purpose, making it difficult to meet modern requirements, and almost all control functions are located in the control station. In contrast, FCS adopts one-to-many bidirectional signal transmission. The digital signals used offer high precision and strong reliability, keeping equipment under the remote monitoring and controllable status of operators at all times. Users can freely select and interconnect devices of different brands and types according to their needs. Smart instruments possess rich functions such as communication, control, and computation, and control functions are distributed among various smart instruments. Thus, we can see the significant progress of FCS compared to DCS. It is precisely due to the above characteristics of FCS that it offers considerable advantages from design and installation through commissioning to normal production: First, since intelligent devices at the front end can perform relatively complex tasks, separate controllers and computing units are no longer required, saving on hardware investment and floor space. The wiring for FCS is relatively simple, and a single transmission line can connect multiple devices, greatly reducing installation costs. Since field control devices often have self-diagnostic capabilities and can send fault information to the control room, maintenance workload is reduced. Meanwhile, because users have a high degree of autonomy in system integration, they can flexibly choose suitable products from different manufacturers. The reliability and accuracy of the overall system are also significantly improved. All of this helps users reduce installation, operation, and maintenance costs, ultimately achieving the goal of increasing profits.

BOSCH plug advantages

1) The memory-oriented dual-bus structure offers high information transfer efficiency, which is its main advantage. However, conflicts still occur when both CPU and I/O interfaces access memory. 2) CPU connects to high-speed local memory and local I/O interfaces via a high-transfer-rate local bus, while slower global memory and global I/O interfaces connect to a slower global bus. This balances high-speed and slow-speed devices, preventing mutual interference. 3) Simplifies hardware design. It facilitates modular structural design methods. Microcomputer designs oriented toward the bus only need to manufacture cpu plugins, memory plugins, and I/O plugins according to these specifications. Connecting them to the bus allows them to operate without considering detailed bus operations. 4) Simplifies system structure. The entire system structure is clear. There are fewer connections, and backplane wiring can be printed. 5) Good system expandability. One aspect is scale expansion, which only requires inserting more plugins of the same type. The other is function expansion, which only requires designing new plugins according to bus standards. The insertion positions for plugins in the machine often have no strict limitations. 6) Good system update performance. Because cpu, memory, I/O interfaces, etc., are connected to the bus according to bus protocols, new plugins can be designed at any time following advancements in processor chips and other related chips, provided the bus design is appropriate. Inserting new plugins into the backplane updates the system, and other plugins and backplane wiring generally do not need modification. 7) Facilitates fault diagnosis and maintenance. Motherboard test cards can conveniently locate faulty parts and identify bus types.

BOSCH plug wiring method

1) Apply moderate force when tightening wiring connections to prevent stripping the threads of bolts and nuts due to excessive force. Replace any stripped bolts and nuts immediately; do not proceed with compromised components. 2) When using a screwdriver to tighten or loosen screws, ensure the screwdriver tip 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 them 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 avoid damage. When using an adjustable wrench, adjust the jaw opening properly to prevent damaging or deforming the bolts and nuts, which would make disassembly difficult. 5) A single terminal block allows connection of up to two wires of the same type and specification. 6) For terminal blocks prone to loosening or poor contact, wire ends must be secured in a '?' shape on 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 washers or washers with poor conductivity in between. 8) When connecting wire ends, the contact surfaces must be smooth and free of oxidation. When connecting lugs or copper bars, clean the contact surfaces, apply conductive paste, and then tighten. 9) When connecting temporary lines, soft single-strand wires should be folded once at the end before connecting to the lower terminal of the circuit breaker. Single-core hard 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 washers with poor conductivity, such as galvanized nuts, flat washers, or spring washers, be interposed between the motor leads and the cables connecting to the motor. 11) When wrapping cables or other equipment requiring insulation protection with insulating tape, the insulation layer should be wrapped from one end to the other with a 1/2 overlap ratio, making at least one round trip.

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