MSW Capacity Panel Data
This panel includes required capacity and capacity information for the selected resource on each day of the schedule horizon, starting with the current day. Also, you can expand and collapse the Capacity Panel to show schedule quantities in weekly and monthly buckets. The weekly and monthly buckets are display only.
Capacity calculations start from the current system date and include the daily capacity. If the capacity results in a negative value, the system attempts to consume the excess capacity available from previous days and continues the consumption until either the available capacity is zero or all previous days’ excess capacity is consumed. The capacity calculation runs from the system date until the last day of the schedule horizon. When past due, the period available capacity is zero minus the past due required capacity.
In the Capacity Panel, you can optionally display the daily delta of required and planned capacity in the MSW. You can set the Consume Prior Remaining Capacity to No; you can see a daily delta calculation in the Remaining Capacity field. For more information, see
MSW Consume Prior Remaining Capacity.
The MSW Capacity Panel includes cumulative capacity calculations as found in capacity requirements planning reports. The Cumulative Capacity row identifies the next available-to-promise date for an order, displays capacity in weekly and monthly buckets, and displays in weekly or monthly capacity buckets. The cumulative capacity uses remaining capacity or planned and required capacity as input.
• Remaining capacity as the input:
[N] = each day. [N “Remaining Capacity" + Prior Day Cumulative Capacity = Cumulative Capacity of [N]
• Using the Required Capacity and Planned Capacity as an input:
[N] = each day. [N "Planned Capacity - Required Capacity" + Prior Day Cumulative Capacity = Cumulative Capacity of [N]
The following figure show how you can see capacity trends across resources—production lines and work centers—at the same time by selecting Site in the resource navigator. Or, you can see capacity trends across only your production lines, only your work centers, or only a particular resource.
Capacity Panel
You can toggle the Capacity Panel to show only remaining capacity. You can optionally hide fields within the grid. When you collapse or hide aspects of the grid, however, you may lose sight of the firm schedule horizon dates that display in the grid. The panel includes the following fields:
Resource ID
The valid system identifier for the resource.
Record Type
The following are the different record types:
• Planned Capacity
This row displays the daily calculated capacity (in hours) based on production line or work center capacity parameters. It does not include past-due capacity; the Past Due column is always set to 0 (zero) and shows no hours.
The workbenches determine the planned capacity of a production line by considering the capacity defined for shifts in Production Line Calendar Maint (18.22.1.22) and the number of production lines/machines available to the shift per the production line. The capacity defined in Production Line Calendar Maint is always defined as the hours of operation for the production line with 24 hours maximum, regardless of the number of lines/machines the production line represents.
Example: You define the production line capacity in terms of the operating hours within a day, maximum 24 hours. You also define the number of lines/machines the production line represents that the system uses to compute the total planned capacity of the production line. The system:
• Calculates the planned capacity on the MSW by taking the capacity defined in Production Line Calendar Maint times the number of production lines, defined on the production line header record.
• Calculates the planned capacity on the PSW by taking the capacity defined in the Production Line Calendar Maint for each shift times the number of production lines defined on the production line header record.
• Adjusts the current computation that calculates the weighted and shift level productivity to consider the number of lines on the production line header record.
For the workbenches, the planned capacity formula is:
Working hours * Number of Lines
Where:
Number of Lines is the number of lines/machines the system uses to process the production order. The system uses the Number Of Lines field also to calculate the production order duration by dividing the production run time/resources.
For standard capacity, the formula is:
Standard capacity = Working hours per week / working days per week
The repetitive formula for planned capacity is as follows:
Planned capacity = shift hours (shift_hour[1-4]) * shift efficiency (shift_load[1-4]) / 100 + shift adjustments (cal_det)
Where:
hd_mstr = holiday master
shft_det =shift detail
cal_det = calendar detail or non-work hours/days
The production order formula is as follows:
capacity = WC capacity + Sum of adjustments (cal_det)
The calculation for a production line is as follows:
Capacity per day = [Repetitive shift hours available - Downtime + /- Holiday Calendar]
The calculation for a work center is as follows:
Capacity per day = [Shop Calendar hours - Holiday Calendar]
The past due calculation is always 0 (zero).
• Remaining Capacity
Identifies the resource required capacity overages and shortages based on a period calculation to help you isolate scheduling issues; see
Consume Prior Remaining Capacity.
• Required Capacity
Identifies the capacity required for this resource (the load for the resource). Capacity shortage is calculated as capacity minus the load.
The repetitive and production order period available capacity is as follows:
If capacity – DailyLoad < 0, then PAC =
(capacity – DailyLoad + previous day capacity if > 0).
Previous day consumption continues until today.
If capacity – DailyLoad > 0 then PAC = (capacity - DailyLoad)
This calculation can be affected by future day consumption.
The past due period available capacity is as follows:
Past due DailyLoad * –1
The value is negative because it represents load that was due in the past. The calculation consumes just enough of the previous days’ available capacity to cover the current day’s gap. Since the calculation consumes previous days’ capacity, both previous and current days’ values are adjusted.
• Scheduled Quantity
Identities the capacity, in terms of quantity, scheduled for this resource.
Horizon End
Displays the date that indicates the end of the schedule horizon.
Past Due
This field displays past due capacity requirements.
