Basic Switches

Basic Switches

  1. The wires between switches are called Travellers
  2. 3-Way switches are SPDT
  3. 4-Way switches are DPDT
  4. Additional switches can be added by more 4-Way switches
  5. A 3-Way circuit has 2 switches - 2 SPDT
  6. A 4-Way circuit has 3 switches - 2 SPDT and 1 DPDT
  7. A 99-Way circuit has 98 switches - 2 SPDT and 96 DPDT

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CSR Motor

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CSR Motor Definition and Characteristics CSR means Capacitor Start Capacitor Run (CSCR), typically shortened to CSR High starting torque Can handle high-demand loads 1-10 HP Can be designed for lower full-load currents and higher efficiency Operates at lower temperature than other single-phase motor types of comparable horsepower Only disadvantage to a CSR motor is its higher price - mostly the result of more capacitors, plus a starting switch Able to handle applications too demanding for any other kind of single-phase motor A CSR motor uses a potential relay or start relay (see Discussion below) Discussion Potential or "voltage" starting relays are used with single-phase capacitor-start/capacitor-run motors, which need relatively high starting torque. Their main function is to assist in starting the motor. These starting relays consist of a high-resistance coil and a set of normally closed contacts. The coil is wired between terminals 2 and 5, with the con...
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Electrical Control Circuit Schematic Diagram of Permanent Split Capacitor Motor

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Electrical Control Circuit Schematic Diagram of Permanent Split Capacitor Motor PERMANENT SPLIT  CAPACITOR  MOTOR Figure 1: A permanent-split capacitor-run motor with the capacitor mounted on the motor Figure 2: An externally reversible permanent-split capacitor motor. To reverse, interchange   leads  T5 and T8 Figure 3: A two-voltage permanent-split capacitor motor connected for 115 volt operation Figure 4: A single-value three-lead reversible permanent-split capacitor motor Figure 5: A two-speed single-value capacitor-run motor Figure 6: A  schematic diagram  of a three-speed single-voltage capacitor-run motor
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Electrical Wiring Diagram Star Delta Control and Power Circuit Using Mitsubishi PLC Program

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This article is intended to diagrammatically demonstrate the concept of the wiring principle of a star delta (wye delta) motor control and power circuit when using a PLC (Programmable Logic Controller) ladder program to control the switching of a 440 volts induction motor. The electrical components comprising the hardware parts of the circuit includes: 1.) 440 volts to 220 volts step-down transformer - 1 piece 2.) 220 volts to 24 volts step-down transformer - 1 piece 3.) 24VAC to 24VDC power supply converter - 1 piece 4.) Normally-open push  button  switch -  2 pieces 5.) Mitsubishi PLC (Programmable Logic Controller) Type FX2N-16MR-ES - 1 unit 6.)  Auxiliary  relay with 24VDC coil and minimum 1 Normally-open contact - 3 pieces 7.) 3 phase 440 volts AC NFB (No-fuse Breaker) circuit breaker (ampere rating depends on motor capacity) - 1 piece 8.) 3 phase 440 volts AC magnectic contactor with 220 VAC coil (ampere rating depends on motor capaci...
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