PLC Off-Delay Timer Instruction

  1. Write a ladder program, to switch off the motor after 30 second delay when the input condition to the rung has failed.
  2. Explain the working of off-delay timer instruction along with its timing diagram.
  3. List at least 10 application of PLC off-delay timer.
  4. How do we decide to choose PLC or a separate timer module for a particular application, which needs a timer?