Motor control circuit on-site installation and debugging method
Electric line on-site installation and debugging method
Most of the time, we are repairing the motor, the installation of the motor, the laying of the line and the installation and commissioning of the control cabinet. We are not intervening, but "the art is not pressing people", today we recommend the "installation and debugging method for electrical lines", hoping that every A motor maintenance staff can improve skills and provide value-added services to users.
1. On-site installation and wiring of electrical lines
First, we need to know whether the site is a buried pipe or a bridge. According to the engineer's electrical circuit layout, find the end point of each equipment line on the site, and check whether the position of the buried pipe corresponds to the end point of each line of the equipment.
Second, the electrical cabinet is fixed on the site base, and multiple cabinets are to be connected to the cabinet. The busbar row is installed and the field console is also fixed.
Third, the primary circuit wiring is preferably the same cable specification. General electrician wiring, like to start all the lines from the head of the equipment, so that the multi-winding cable can be disassembled at the same time, and each time a position is changed, several coils of cables are moved together and moved easily. My suggestion is to take a roll of a certain specification cable, and then arrange all the cables from the head end to the end of the whole set to use the same specifications. For example, the same type of motor fan on the site, we can arrange these lines first. Ok, then check to make sure that there is no omission, then check the same set of specifications for the cable layout. Next, we proceed to the next set of cable routing of the same specification, and the layout is also checked in turn. In this way, only one cable of the specification is removed at a time, and after all the wiring of one cable is completed, the remaining cables of this specification can be put into the warehouse and the identification card is attached for identification.
Fourth, to clarify the order of the wiring, the field wiring is preferably to first enlarge the line, then put the small line, first put the line once, then put the second line, first discharge the machine line, then put other load lines, each line is finished. It is necessary to do the signage. The advantage of first amplifying the line and then placing the small line is that in the cable trench or bridge, the large line does not press the small line. The advantage of first placing the line and then placing the second line is that the primary circuit can be completed as soon as possible with a relatively small number of lines, and the interference processing of the secondary line is facilitated.
The first thing we do is the motor wiring, and then the following wiring is started: the wiring of the motor fan, the wiring of the heating resistor wire, the wiring of the button operating point in the control line, the hydraulic circuit, the wiring of the analog line such as the temperature sensor, the encoder circuit Wiring, wiring of communication lines. In this way, we solve the main loop first, and then solve the switching wiring of the control loop. We can find the wiring measures in the next vulnerable line, so that we can avoid the interference problem during the wiring phase.
Fifth, regarding the wiring, first record which color or number corresponds to which terminal in each cable, and then complete one record, and the same specification is best. For example, all the motor wires are preferably unified into yellow, green and red. UVW. All cables and loads should be connected after the completion of one line, and then the secondary lines should be routed. The advantage of this is that it will not be confused, especially if there are many lines on the site. And it can make the scene look fresh, rather than being confused as if all the cables were left and the cables were exposed on the spot. Moreover, the wiring and wiring of one stage can make the installation project progress regularly in one stage and one stage, instead of grabbing the eyebrows and beards.
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