CAN/DeviceNet explosion-proof remote EEX m
A CAN bus and encapsulation technology, which is applied in the field of bus encapsulation modules, can solve the problems of inconvenient installation, inconvenient construction, and many cables in industrial sites where explosion hazards cannot be directly installed, so as to save cables and aluminum materials, save cables, and reduce engineering costs. The effect of fees
Active Publication Date: 2008-02-13
SHANGHAI IS INSTR & SYST CO LTD
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Problems solved by technology
[0002] At present, the intrinsically safe equipment on the primary side of the site, such as transmitters, proximity switches, thermal resistors, thermocouples, etc., must be connected to the machine room tens of meters or even hundreds of meters away with wires, and connected to the traditional isolation barrier. Traditional isolation barriers only have IP20-level enclosure protection capabilities, and cannot be directly installed in industrial sites with explosion hazards
If it is to be used, it must be installed in a bulky explosion-proof box, and there are many cables, so the construction is extremely inconvenient
Method used
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] As shown in Figure 1, a CAN / DeviceNet explosion-proof remote sealing module is divided into an analog input type sealing module and a dual switch input type sealing module. The sealing module includes a plastic case 1 and a sealing module printing plate Component 6, intrinsically safe terminal pin 5, CAN bus terminal pin 8, one end of the sealing module printed board component 6 is provided with intrinsically safe terminal pin 5, and the other end is provided with CAN bus terminal pin 8, the sealing module prints The plate assembly 6 is placed upside down on the bottom plate of the plastic case 1, the two ends of the plastic case 1 are fixed by the connectors 2, and a layer of potting layer 7 is placed in the inner layer of the plastic case.
[0020] Design the double-row 2×3 pins 5 on the intrinsically safe side and the 2×4 double-row pins 8 on ...
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The invention discloses a CAN / DeviceNet explosion-proof remote encapsulation module, comprising a plastic-case, a printing plate assemble of encapsulation module, a pin of intrinsic safe end, and a CAN bus pin. One end of the printing plate assemble of encapsulation module is provided with a pin of intrinsic safe end, and the other end of the printing plate assemble of encapsulation module is provided with the CAN bus pin. The printing plate assemble of encapsulation module is arranged on the plastic case with the upside down. Both ends of the plastic case are fixed by fasteners. An encapsulation layer is arranged inside the plastic case. The printing plate assemble of encapsulation module consists of XOY area of feed circuit, YOZ area of CAN bus connection and XOZ area of Zener guard grating with module function. The invention can safely realize the design target of the highest explosion-proof level ExIIC by the simplest way. The invention can enter in to No.1 area or No.2 area in the hazardous area in an increased safety explosion-proof tank that is provided with a single way or multiple ways. Compared with traditional methods, the invention can improve explosion-proof level, save a large quantity of cable and aluminum materials (compared with a heavy flameproof box) and reduce cost on project.
Description
technical field [0001] The invention relates to an electrical explosion-proof device, in particular to a bus casting module used for leading to explosive hazardous places. Background technique [0002] At present, the intrinsically safe equipment on the primary side of the site, such as transmitters, proximity switches, thermal resistors, thermocouples, etc., must be connected to the machine room tens of meters or even hundreds of meters away with wires, and connected to the traditional isolation barrier. Traditional isolation barriers only have IP20-level enclosure protection capabilities, and cannot be directly installed in industrial sites with explosion hazards. If it is to be used, it must be installed in a heavy explosion-proof box, and there are many cables, so the construction is extremely inconvenient. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a CAN / DeviceNet explosion-proof re...
Claims
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Login to View More IPC IPC(8): G05B19/418G06F13/40G08C19/00H05K5/06
CPCY02P90/02
Inventor 沈磊沈正沈锦仁
Owner SHANGHAI IS INSTR & SYST CO LTD