QWAdmin Help Files
The Event screen is used to define the parameters for making the application a Event Analysis application. This gives you access to the Event Analysis screens. To make an application a Event Analysis application there are two main requirements.
You must be able to Quantify and Qualify a event.
Quantify the measure of severity
Minutes Down in a downtime application
Pounds/Cases Lost in a process loss application
Pounds/Tons returned in a customer complaint application
Qualify by asking and answering questions
What caused the event?
What product was being made?
What Team was working?
What Shift was it?
What did the event cost?
To make an event analysis application you need a measure of severity and usually a root cause determination question like root cause of the event.
The minimum requirements for a Event Analysis application and use of the Tri-eto, Time Between Events and Reliability Charts are:
- Variable used for Units
- Description of Units
- Description for Frequency
To add a third pareto chart to the Tri-eto Chart:
- Variable used for Weight
- Description for Weight
To automatically account for excluded time and make use of Mean Run Time Between Events instead of Mean Calendar Time Between Events:
- Variable used for Scheduled Downtime
To have access to the Interval Chart:
- Interval Duration
- Beginning Interval Time
- Description for Interval
To have access to Normalized data on the Interval Chart:
- Variable used for Normalization
Variable Used for Units
The variable in your application that is the measure of severity. It is a required field in defining an Event Analysis application. In the example it is V9 - Minutes Down. To select a variable for units press the Enter key while positioned in this field. A popup window of all the variables qualified to be used as Units in the application will be displayed. Use the Up/Down arrow keys to position the highlighted bar on the variable to be selected and press the Enter key.
Description of Units
The description you wish to give to the measure of severity. It is used on the top of the Tri-eto Chart to provide a name for Units.
Examples - Minutes or Pounds.
Description of Frequency
The description of what an event is. It is used on the top of the Tri-eto Chart to provide an application name for Frequency.
Examples - Stop or Complaint.
Variable Used for Weight
An optional setting used it assigns a variable from the QW application to be used as the third pareto chart on the Tri-eto Chart. It is a good idea to create and assign a variable from the
template that will provide the viewer with a different perspective to events. This could be a Calculated variable that provides a $ Cost or a loss of efficiency based on a formula that uses the measure of severity.
In our example it is $ Cost of the event. It is calculated as a fixed cost for an event plus the result of minutes down times a set cost per minute. The calculation can be enhanced by making the fixed cost and cost per minute variables dependent on a Popup Selection like which product was running at the time of event. Popup Fields in the Product Popup could be the Fixed cost and Cost per Minute for that product.
It is highly recommended that this option be used.
To select a variable to use as a weighted value press the Enter key while positioned in this field. A popup window of all the variables qualified to be used a Weighted value in the application will be displayed. Use the Up/Down arrow keys to position the highlighted bar on the variable to be selected and press the Enter key.
Description of Weight
Used in conjunction with Variable Used for Weight allowing you to assign a description of the Weighted value. It is used on the top of the Tri-eto Chart to provide a name for Weighted value.
Example $ Cost or Eff. Loss.
Variable Used for Scheduled Downtime
If you create and assign a variable to this field it will be used to account for time you wish to exclude from the calculation of Mean Time Between Events. Here are the two ways it effects an event analysis application. First, the calculation of time between events on the Tri-eto will be the Mean Run Time Between Events (MRTBE) instead of the Mean Calendar Time Between Events. Refer to QW Definitions and Statistics for information on these terms.
Second, QW will automatically add a record to an application data file for each interval that it has determined has had no entries. This is based on the date and time of the last record in the QW application data file and the current system date and time. The records added this way will only have the number of hours for an interval in the variable assigned to Scheduled Downtime.
An indication that QW is adding scheduled downtime records to an application is when you have pressed the Insert key to save the data on the add screen and the Working box stays on the screen longer than normal.
QW will also add a record to a QW application file if it is determined that you have crossed an Interval boundary. This record is completely blank and is added to provide a place to enter scheduled downtime that you did not record for an interval.
Scheduled Downtime should not be recorded on the same record as an event. QW will assume the record is a scheduled downtime record and ignore the Event information.
The maximum value entered for scheduled downtime should not exceed the interval duration.
Variable Used for Normalization
The Interval Chart has an option to normalize the data displayed. Normalizing data is a method of bringing values that are of unequal terms to a common term so these items can be compared. This is a method that would permit comparing apples to oranges.
For the Interval Chart the method of Normalizing data is to take the Frequency, Units or Weighted value and divide it by a value. That value is defined by the variable you select at this prompt. The value you use for normalizing data on the Interval Chart is typically a value accumulated over an interval like production for the interval.
To select the variable to be used for Normalizing data press the Enter key while positioned in this field. A popup window of all the variables will be displayed. Use the Up/Down arrow keys to position the highlighted bar on the variable to be selected and press the Enter key.
If you do not assign a variable for Normalizing data the N key is disabled on the Interval Chart screen.
Description of Normalization
Used in conjunction with Variable used for Normalization allow you to assign a description of the Normalization value. It is used on the bottom of the Interval Chart.
Example: Cases or Tons/Shift.
Interval Duration (HOURS)
The value indicates the length of an Interval in hours. The value you select should divide evenly into 24 as Intervals are normally a production shift or day.
If an Interval is not provided then the I-Interval key is not active in the Tri-eto Chart.
Beginning Interval Time (HH:MM)
The time, in 24 hour clock format, of the starting Interval time. This is used with the Interval duration to align events within Intervals for display on the Interval chart. The is normally set to the start of the production shift or day.
Description of Interval
Used to assign an up to nine character description of what the Interval Duration represents.
Example Shift or Day.