Calculating Resource Utilization

Resource utilization criteria can be set in the Utilization tab in Tools > Options > Manufacturing Planning.

The ranges of percentage values and color coding for each range can be defined (see Utilization).

Up to four ranges between 0% and greater than 100% are available. For each range a color is assigned. Based on colors it can be seen how well or badly a resource is utilized.

For example, if the cycle time is 60 sec and the range goes from 50% to 75% then corresponding time range is 60*50%=30 sec to 60*75%=45 sec.

If the resource is utilized from 30 to 45 sec or 50% to 75%, it is marked in the defined color of this range.

Resource utilization is the coefficient of resource busy time/system cycle time expressed as a percentage. It is calculated for working resources only.

Resource utilization[%] = (resource busy time/cycle time)*100

The resource busy time is the duration of operations with respect to the defined control flow, parallel activities and times when the resource is not busy.

The cycle time is the cycle time of the system, propagated in the cycle time attribute of the resource itself or its parent. If no valid cycle time can be retrieved, utilization is 0. Resource utilization is not persistent, it is available in the session only.

In the example below, the busy time of resource Workplace 1 is 30 sec and the cycle time is 60 sec. The resulting utilization is 50%.

In the example below, the busy time of resource Workplace 1 is 20 sec and the cycle time is 60 sec. The resulting utilization is 33.33%.

In the example below, the busy time of resource Workplace 1 is 30 sec (20 sec + 10 sec) and the cycle time is 60 sec. The resulting utilization is 50%.