Productivity Diagnosis 3Ch

The Productivity Diagnosis 3Ch algorithm calculates the productivity of the process during a production interval. The diagram below schematically illustrates the relationship between the production process and the individual production cycles.

The production interval can be started and stopped via the input Is Producing. During the execution of the production interval, the production cycles are counted. Each production cycle corresponds to one piece produced. A production cycle starts with an edge at Start Cycle and stops with an edge at Stop Cycle. The productivity over the entire production interval (Productivity) is calculated after stopping the interval when the signal Is Producing no longer meets the condition for Threshold Level Producing. The completed production cycles and therefore all finished pieces are taken into account. Productivity is calculated as the ratio of pieces actually produced per time and the target value of pieces to be produced in a given time. The output Productivity Last Cycle is calculated from the time required for the last production cycle in relation to the configured time for a piece. Any break times between cycles are not taken into account. The output Expected Productivity estimates the total productivity during the production interval. For this purpose, the previous production time is extrapolated to the total productivity for the target value of the pieces to be produced. The algorithm can be configured with the target value for the Produced Pieces within a configured interval (Production Time), e.g. 1 piece in 30 seconds or 50 pieces per hour.

Optionally, a Boolean signal can be selected for the Enable Execution input so that the algorithm is only active if the value of the selected signal is TRUE.

Configuration options

• Type of the Edge: Specifies whether the algorithm should respond to a rising or falling edge. Can be configured individually for each threshold.
• Threshold Level Producing: Threshold of Input Producing at the respective edge. The Production Time Interval starts when the signal passes this threshold.
• Threshold Edge Start Cycle: Threshold of Input Start Cycle at the respective edge. The production cycle starts when the signal passes this threshold.
• Threshold Edge Stop Cycle: Threshold of Input Stop Cycle at the respective edge. The production cycle stops when the signal passes this threshold.
• Produced Pieces: Target value for pieces produced during the configured time interval (Production Time).
• Production Time: Time interval of the production time. It can be configured in days, hours, minutes or seconds.
• Tolerance (optional): Tolerance value for the Equal / NotEqual comparisons.

Output values

• Producing: Indicates whether the production interval is active.
• Productivity: Productivity of the entire production interval in percent.
• Productivity Last Cycle: Productivity of the last production cycle in percent.
• Expected Productivity: Estimates the productivity of the production interval. Specified in percent.
• Elapsed Time: Timespan since the start of the production interval.
• Production Cycles: Number of complete production cycles in the current production interval.

Standard HMI Controls

For the Productivity Diagnosis 3Ch algorithm, the following HMI controls are available for generating an Analytics Dashboard:

1. The ProductivityDiagnosis control visualizes the output values Productivity and Productivity Last Cycle.

2. The Table Control or Multivalue Control visualizes all output values: New Result, Producing, Cycle Finished, Productivity, Productivity Last Cycle.

Alternatively, customer-specific HMI controls can be mapped in the Productivity Diagnosis 3Ch algorithm using the Mapping Wizard.