Motor Control Circuits
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Circuit shown in Figure 3-107. Figure, SBi is running at low speed button, SB2 for the high-speed operation button. ..
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Circuit shown in Figure 3-108. SB3 for the forward button; S Island reverse button; SBi as low start button; SB2 to speed the start button; SBs for the stop button; KMs for the..
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Circuit shown in Figure 3-11. It uses a one-way thyristor control. Adjustment potentiometer RP, continuously changing the motor speed. ..
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Circuit shown in Figure 3-112. Figure, SBi as the first speed operation button, SBz is run by the second speed class. Two speeds in the same direction. ..
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Circuit shown in Figure 3-115. It uses contactors and double buttons, so when converting speed without press stop press ugly, can be directly converted. SBi, SBz button and SB3..
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Circuit shown in Figure 3-12. It has a variable speed and timing control functions. When the switch S placed in the 1 position, press the button SB, the motor starts running, a..
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Circuit shown in Figure 3-120. If the motor capacity is small (less than the rated current 5A), it can use an intermediate relay (contact a few more) instead of the contactor. ..
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Circuit shown in Figure 3-14. SA switch placed in the work position, the motor is transferred; SA placed bit is set, reverse the motor. Drawing, over-voltage protection element..
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Circuit shown in Figure 3-150. When shut down, the contactor KM1 released. KMz pull, 220V AC power supply through the diode VDi, VD2 rectifier, the motor primary and secondary ..
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Circuit shown in Figure 3-151. Figure 3-151 (a) of the capacitor banks connected into shape, it applies to shaped or Y-connected motor; Fig. 3-151 (b) of the Y-connected capaci..
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Circuit shown in Figure 3-16. It uses 555 IC A as the control element; capacitive step-down circuit; bidirectional thyristor V between the motor control intermittent operation...
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Circuit shown in Figure 3-175. Regulator connected between one phase and neutral. It applies to the rated voltage of 380V torque motor. This method than the degree of the imbal..
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Circuit shown in Figure 3-176. This adjustment method, the motor can run at equilibrium, adjustment range and relatively wide. But requires a three-phase voltage regulator, hig..
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Circuit shown in Figure 3-177. It uses two single-phase voltage regulator and connected to a V-shaped, single-phase regulators when two concentric series of time-linked slippag..
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Circuit shown in Figure 3-178. It withered speed torque motor for continuous casting machine, the circuit from the main circuit, trigger circuit, manual and automatic control s..
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Circuit shown in Figure 3-181. Main circuit consists of three thyristor Vi-V3 components. Trigger circuit single-junction transistor relaxation oscillator. Speed circuit has ne..
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Circuit shown in Figure 3-186. Figure, os for the isolation switch; QF vacuum circuit breakers; YR line for the circuit breaker coil; YA circuit breaker closing coil; SAi dashe..
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Circuit shown in Figure 3-189. Figure, SA controls switch; SBi is closing button; SBz to trip button; Yaa de-excitation switch is closing coil; YR3 is off trip coil magnetic sw..
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Circuit shown in Figure 3-190. The line in the armature circuit in series two startup resistor Ri, Rz, through the main switch SA to achieve start, stop and speed control. Duri..
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Circuit shown in Figure 3-191. The line in the DC motor armature circuit in series two-stage startup resistor Ri, Rz, Lee realized using the buttons to start and stop the motor..
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Circuit shown in Figure 3-193. Motor is separately excited DC motor. The brake circuit does not take measures, so the positive reversals alternately using delay action time rel..
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Circuit shown in Figure 3-194. Motor is re-excitation type DC motor. The motor has six terminals, sl, S2 for the armature windings; cl, cz for the series excitation (field) win..
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Circuit shown in Figure 3-196. The circuit has a resistance level start, under voltage relay KAz controlled by the startup resistor removed; shutdown, the use of dynamic brakin..
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Circuit shown in Figure 3-197. Dish adjust rheostat RP, can change the field current to change the motor speed. ..
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Circuit shown in Figure 3-201. The circuit has two starting resistor, starting resistor controlled by the time relay cut; SA by a master switch to control the motor reversing o..
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Circuit shown in Figure 3-41. This circuit Y- transfer process, contact KMi turned off again experienced a process of turning that motor is transitioned in case of power failur..
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Circuit shown in Figure 3-64. When the switch SAi placed in the work position, SA2 placed in the standby position, the motor is running Mi, Mz spare. When downtime occurs when ..
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Circuit shown in Figure 3-72. The circuit uses deformable bistable reversing motor control circuit automatically run and stop there during the time delay (time adjustable), to ..
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Circuit shown in Figure 3-92. It uses dual-phase sequence protection relay sense. When the power positive phase sequence (U, V, w), following the electrical KA pull. If the pow..
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Circuit shown in Figure 3-93. It is coupled with optical phase sequence protection relay. ..
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Circuit shown in Figure 3-96. Figure, SBz is running at low speed button, SBi as the high-speed operation button. SB3 for the stop button. In this circuit, a motor connected in..
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Circuit shown in Figure 3-97. The circuit only two contacts, the circuit is simple, but only applies to the following 2kW dual speed motor. Figure, SBi is running at low speed ..