Configuration of different cycle signal patterns
Cycle signals are used both to capture produced amount, and in cases with shorter cycle times (<60 sec) also to identify uptime/downtime.
This page describes how RS Production can be configured to handle the different types of sequences that a production process can produce units in.
The illustration above shows three different types of cycle time patterns. In the examples the production process is assumed to run 100% optimum speed without any downtime.
The table below explains how to configure Cycle factor, Optimum cycle time and Longest cycle time to get both uptime/downtime, produced amount and OEE correct.
Cycle signal pattern | Description | Cycle factor (used to calculate produced amount from a cycle signal. Can be both < and > then 1). | Optimum cycle time (used to calculate 100% Performance in OEE) | Longest cycle time (used to identify downtime by cycle time signal. Use only if max 60 sec) |
|---|---|---|---|---|
Simple | Consequent cycle times. Produced units are coming one at a time in a steady and repeatable way | Set to describe the produced amount per cycle signal. | Easy. Optimum cycle time is the time between cycle n and cycle n+1. | Rule of thumb is to set Longest cycle time to 1,5x Optimum cycle time but never shorter than 10 seconds |
Grouped | Sequential consequent cycle times. Produced units are coming two or more at a time in a steady and repeatable way | Set to describe the produced amount per cycle signal. | Optimum cycle time is the average time between cycles seen over a longer period of uptime. In the visual example above, it is the length of a cycle pattern diveded by 4 (as there are four cycles in a cycle pattern). | Never shorter than the longest possible time between two cycle signals. |
Scattered | Inconsequent cycle times. Produced units are coming without a given and pattern | Set to describe the produced amount per cycle signal. | Optimum cycle time is the average time between cycles seen over a longer period of time. In the visual example above, it is 60 cycle signals in the 60 minutes. That means 60 seconds optimum cycle time. | Never shorter than the longest possible time between two cycle signals. |