To give further clarity, Let go through an example of a production house. The planned production time is an actual time planned to operate the machine. If a factory is operating 8 hours per shift with 30 mins break time, the actual planned production time in minute is 450 (by subtracting 30 mins from 480 minutes).
The actual hours operated by the machine operator might vary depending on the various conditions during the production. The material loading, refilling, part changes, maintenance check and many other activities might impact the production time.