First, the question raises
1D from the reason, the observation, the two three desks in the pump in the pump in the pump of the pump from the three three desks Pumping water pump water pump water pumping water pumping water pumping water pumping water. Water water and water pump from the pump water well water well water well rolling unit and roll -up rolls to pick up the area of ??water supply water supply water supply water supply water supply water supply and water supply supply rolls and roll rolls. Volume V101, V103 valve, excess sedimentation pool, production, production continuously, during production, flowing through the V102 valve valve water flowing back to the pool. Essence Essence The instructions of the manifestation of the manifestation of the manifestation of the manifestation of the manifestation of the manifestation of the manifestation of the manifestation in the instructions of the manifestation in the instructions of the manifestation, the instructions of the manifestation of the instructions of the in which the display where the presentation where the presentation showed) 18d power power power power 260kW, the initiative was launched. Starting start, the start of the starting load of the start of the start, which causes the water to walk only, causing the roadside road. Essence So with steel workshop water
Figure 1: Ribbon processing system map
Second, solution
1, overall thinking
The reconstruction system includes the S7-300 PLC, 1D, 2D, 3D, 15/16D 17/18D, 17/18D five-five-five-five-five-five-five-frequency speed adjustment devices and each set of frequency converter configuration. Inverter inverter 1D uses G9-160T3 inverter, 2D, 3D, 15/16D, and 17/18D G9-280T3 inverter, of which 1DRBC-40KW-4Ω 4220 is, 2D, 3D, 15/16D And 17D RBC-40KW-4Ω two manual and segment speed control methods.
figure 2
2. The resistance unit is applied in the system
The shutdown of 1.1D, 2D, 3D and 15/16D, 17/18D water pump water pump is the speed of the reasons for realizing the reasons through the gradual reduction of frequency. Essence The phase phase phase phase phase phase phase phase phase phase phase phase phase phase phase phase -oriented speed changes are changed. The moving torque will drop rapidly, and the electrical energy with the rapid regeneration of the motor is renewed and rectified through the rectification of the two -polar pipe to the DC Circuit circuit. Essence Although absorbing and absorption, although other electrical energy power energy, some consumption of electric energy consumption consumes a short and short period of charge accumulation of charge accumulation, "formation", "pump rise", for. In the power generation brake, the energy consumption comes from this part of the regenerative energy and energy. The method used by energy consumption braking is to add and place component blocking units to brake the renewable energy of the DC side of the inverter DC side.将将再生再生再生再生再生再生能量能量能量能量能量通过通过通过通过专门专门的的能耗能耗能耗制动制动制动制动制动电路电路电路电路电路在电阻电阻，它它单元制Two resistance two. Essence
2.2 braking, braking unit ::
1 (1)) Protective frequency device is harmful to regenerative electrical energy
1D, 2D, 3D and 15/16D, 17/18D water pump pump water pump parts in the medium and medium in the inverter part. Essence Essence , Should be used, protect resistance, protect resistance resistance resistance resistance resistance
2) (2) Ensure to ensure the operation of the network
1D, 1D, 2D, 3D and 15/16D, 17/18D water pump water pump water pump water pumping process The regeneration conversion transformation into the thermal energy thermal energy thermal energy thermal energy thermal thermal thermal thermal thermal thermal thermal thermal heat energy of thermal energy thermal energy thermal energy thermal energy fluctuates to ensure the operation of the network. Essence Essence
Third, concluded
Bring steel control development and application quality, quality, quality, quality, quality, quality, improvement and improvement of quality and cooling have the ability to cool down, reduce the ability to cool down, cool down, cool down, cool down, cool down, cool down, cool down and cool down, cool down and cool down. , Easy to maintain
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