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Industrial switch hardware failure mainly refers to the switch power, backplane, module, port and other components of the fault, can be divided into the following categories:
Backplane failure
Industrial switches are plugged in the backplane if the environment is wet, the circuit board damp short circuit, or components due to high temperature, lightning and other factors will cause damage to the circuit board can not work such as:. Poor heat dissipation or environmental temperature is too high lead to machine temperature rise, resulting in components burned.
In the case of normal power supply to the external power supply, if the various internal modules of the industrial switch can not work properly, it may be a bad backplane, and even if this is an electrical maintenance engineer, I am afraid that the only way is to replace Backplane.
electricity failure
Due to external power supply instability, power line aging or lightning and other reasons leading to power damage or fan stop, so that can not work properly. Or because the power supply causes other parts of the machine damage will make the industrial switch problems.
If the power switch on the panel of the industrial switch is green, it means that it is normal; if the indicator is off, it means that the industrial switch does not have the normal power supply. The problem is easy to find and easy to solve. of.
For this type of failure, the first external power supply should be done, generally through the introduction of independent power lines to provide independent power supply, and add a regulator to avoid instantaneous high voltage or low voltage phenomenon. If the conditions permit, you can add UPS (uninterruptible power supply) to ensure the normal power supply of industrial switches, and some UPS to provide voltage regulator, and some do not, choose to pay attention. In the engine room set up professional lightning protection measures to avoid lightning on the industrial switch damage. There are many professional companies to do lightning protection projects, the implementation of network cabling can be considered.
Port failure
This is the most common hardware failure, whether it is fiber port or twisted pair RJ-45 port, in the plug connector must be careful. If you accidentally dirty the fiber plug, it may cause the fiber port to pollute and not communicate properly. We often see a lot of people like to plug the plug, theoretically it is possible, but this also inadvertently increased the port failure rate. Do not care when handling, may also cause physical damage to the port. If you buy the crystal head size is too large, insert the industrial switch, it is also easy to destroy the port. In addition, if the twisted pair on the port has a section exposed to the outside, if the cable was lightning hit, it will lead to even the industrial switch port was damaged, or cause more unpredictable damage.
Under normal circumstances, the port failure is one or several ports damaged. Therefore, after excluding the failure of the computer connected to the port, you can replace the port, to determine whether it is damaged. Encountered such a failure, you can turn off the power, with alcohol cotton ball cleaning port. If the port is indeed damaged, it can only replace the port.
Module failure
Industrial switches are made up of many modules, such as:. Stacking modules, management modules (also known as control modules), expansion modules, etc. The probability of failure of these modules is small, but in the event of problems, it will suffer a huge economic loss if the module is not careful when the module, or handling industrial switches Collision, or power supply instability, etc., may lead to the occurrence of such failures.
Of course, the above mentioned three modules have external interface, relatively easy to identify, and some can also identify the module through the light to identify the fault such as: stacking module has a flat trapezoidal port, or some industrial switches A USB-like interface. Governance module has a CONSOLE port, and the network management computer to establish a connection to facilitate governance. If the expansion module is a fiber connection, there will be a pair of fiber interfaces.
In the exclusion of such failures, first of all to ensure that the industrial switches and modules of the normal supply of power, and then check whether the module is inserted in the correct position, and finally check the connection module cable is normal. When connecting the governance module, consider whether it uses the specified connection rate, whether there is parity, whether there is data flow control and other factors connected to the expansion module, you need to check whether to match the communication mode, such as:. Use full-duplex mode or half-duplex mode Of course, if the module is confirmed to be faulty, there is only one solution, that is, should immediately contact the supplier to replace.
Cable failure
In fact, such failure in theory, does not belong to the fault of the industrial switch itself, but in actual use, the cable failure often leads to industrial switch system or port can not work, so here also classified this failure into the industrial switch hardware failure. Such as connector plug is not tight, the cable is arranged in the order of the wrong or not standardized, the cable connection should be used cross-line but the use of direct connection, the cable in the two optical fiber staggered connection, the wrong line connection leads to network loop Wait.
From the above several hardware failure point of view, the engine room environment can easily lead to a variety of hardware failure, so we in the construction of the engine room, you must first do lightning protection and power supply, indoor temperature, indoor humidity, anti- Anti-static and other environmental construction, network equipment for the normal work to provide a good environment.

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