Under the OFF-Delay Relay operation, what occurs when S2 is pushed after M has been stopped by S1?

In OFF-Delay Relay operation, pressing S2 after the motor M has been stopped by S1 activates a timer associated with the relay. When S1 is pressed, it stops the motor, but pressing S2 initiates a delay before the motor can restart. This delay allows the motor to remain off for a predetermined period, which in this case is specified as 2 minutes.

The primary purpose of an OFF-delay relay is to ensure that equipment does not restart immediately after being shut down, providing a buffer time for safety and operational efficiency. In some applications, this delay allows for cooldown periods, prevents damage from sudden restarts, or allows other mechanical components to stabilize before re-energizing the system.

Thus, the motor indeed restarts after the specified delay of 2 minutes once S2 is activated. This behavior is a key characteristic of how OFF-delay relays function.