| # Calculating man/machine hours The man hours and machine hours that are required to carry out an operation are calculated from the data in the Routing module. The most important factors are: Batch size, or input quantity of the operation (quantity of items that must be processed). Average setup time [minutes]. Cycle time [minutes]. Routing unit. Fixed duration. These factors are defined in the following sessions: Tasks (tirou0103m000) Routing Operations (tirou1102m000) Task Relationships (tirou0104m000) Production Planning (tisfc0110m000) Man hours The number of man hours that are required to carry out an operation are calculated as follows:
    man hours =
    (setup time * man occupation for setup) + input quantity of operation *
    cycle time/routing unit * man occupation for production
If the operation has a fixed duration, then the man hours are independent of the batch size. The man hours are then calculated as follows:
    man hours =
    (setup time * man occupation for setup) + cycle time/routing unit *
    man occupation for production
A fixed duration can be defined in the following sessions: Routing Operations (tirou1102m000) Tasks (tirou0103m000) Generic Routing (tipcf3120m000) (for operations in a generic routing). Task Relationships (tirou0104m000) Production Planning (tisfc0110m000) Machine hours The number of machine hours that are required to carry out an operation are calculated as follows:
    machine hours =
    (setup time + input quantity of operation * cycle time/routing unit) *
    machine occupation
If the operation has a fixed duration, then the machine hours are independent of the input quantity of the operation and the routing unit. The machine hours are then calculated as follows:
    machine hours =
    (setup time + cycle time/routing unit) * machine occupation
A fixed duration can be defined in the following sessions: Routing Operations (tirou1102m000) Tasks (tirou0103m000) Generic Routing (tipcf3120m000) (for operations in a generic routing). Task Relationships (tirou0104m000) Production Planning (tisfc0110m000) Related topics To calculate production times of operations |