Intermittent one start and stop cycle control circuit
The circuit utilizes two time relays to provide precise control over the motor's operational cycles. Relay KTi is responsible for initiating the motor's operation, while relay KTz is tasked with managing the downtime period. This configuration allows for effective automation of the motor control process, ensuring that the motor runs for a predetermined duration before switching off, thereby preventing overheating and excessive wear.
The time relays can be adjusted to set specific on and off durations, allowing for flexibility in various applications. The relays are typically connected in a manner that ensures the motor receives power only during the active phase dictated by KTi. Once the set time elapses, KTi deactivates, and the circuit transitions to the downtime phase controlled by KTz, ensuring that the motor remains off for the specified period.
This arrangement is particularly useful in applications where motors are required to operate intermittently, such as in conveyor systems, pumps, or HVAC systems. The use of time relays enhances the efficiency of the motor operation, reduces energy consumption, and prolongs the lifespan of the motor by minimizing unnecessary run time.
In summary, the circuit demonstrated in Figure 3-76 effectively employs two time relays to control motor operation and downtime, providing a reliable and efficient solution for automated motor management. Circuit shown in Figure 3-76. It uses two time relay to achieve control. KTi and KTz control the motor running and downtime.
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