Process Defaults and Thresholds
Plant variables control several aspects of PCBA costing. Any PCBA entry can be adjusted as necessary for your local installation. Follow these steps to access plant variables for a given VPE and process:
3 Select Tools > VPE Toolset, and then click the VPE Manager button in the VPE Toolset window.
4 Double click the PCB Assembly VPE in the Select VPE window.
5 In the VPE Manager, click + to expand the Assembly and User Guided process groups.
6 Under these groups, click Variables.
7 Review the adjustment factor variables in the User Guided Process Group:
cycleTimeAdjustmentFactor
laborRateAdjustmentFactor
overheadRateAdjustmentFactor
purchaseVariance
8 Many PCBA variables are available in the Assembly Process Group, and are well documented in the comments columns. The following table lists these PCBA variables as of this writing. Use the procedure above to list the most up-to-date variables. The values in this table have been compiled from various industrial sources or from time studies in industrial applications, to provide reasonable defaults. You can adjust them if necessary to reflect your specific installation.
Variable Name | String Value | Unit Type Name | Notes |
connectorQuantity | 1 | Quantity of connectors to be mated for software load. | |
cycleTimeAdjustmentFactor | 1 | Factor used to globally increase or decrease cycle time evaluations per process. | |
monitorPercentage | 25 | Default percentage of time the operator monitors full immersion Ion Chromatography. | |
numAutoPreformedParts | 0 | Quantity of different part types to be auto preformed. Used to determine how many times the batch setup must be performed per PCB Assembly. | |
panelizationHorizontalBuffer | 5 | Length | Distance between PCBs in Panel. |
panelizationVerticalBuffer | 5 | Length | Distance between PCBs in Panel. |
reflowBuffer | 150 | Length | Distance between PCBs required in Reflow process. |
softwareLoad Time | 90 | Time | Time to load software onto component. |
softwareRevisionLabelQuantity | 1 | Software Revision Label Quantity for each component to have software loaded. | |
solderPasteCost | 150 | Currency | Cost of a tube of solder used for Solder Printing and Solder Jetting in PCB Assembly. |
stencilQuantity | 2 | Quantity of stencils per PCB that need to be applied. |
