Planning in production systems PPS systems – production planning and control systems Slovak University of Technology Faculty of Material Science and Technology in Trnava

Production planning and control systems are in literature presented under the name : Production Planning System (PPS) Production Planning and Control (PPC) Manufacturing Resource Planning (MRP II) Production Management System (PMS)

Tasks of PPS systems to secure scheduling of customer’s order by production to coordinate ordering process by production, in a way to fulfil its realization in optimal relations

PPS structure Production planning  define assortment and quantity of production orders, that should be released – place an order into production  to secure their term layout for available production facilities

PPS structure Production controlling  connects on tasks of production planning  coordinates reciprocal action for basic elements of production process  coordinates reciprocal action of main and helping production processes

Basic structure of PPS system

Data administration common for both areas of PPS collection, processing, administration of all basic data needed for PPS system basic data:  information about suppliers  information about customers  information about products and orders  bills of materials  information about production structure  technological process  information about production tools

Production program planning realization and creation of gross production program ( production quantity, amounts and terms)- activities:  demand requests  planning of customer orders  gross terming of customer orders  informative calculation of capacities  gross calculation of material usage

Planning of quantity arrangements that are needed for security of material production, in regard of product type, quantity and terms entrance bases – production documentation, size of reserves specific activities  planning material requests  calculation of reserves  calculation amount ordered  material ordering

Term and capacity planning designates capacity demands and time schedule of production, occupied capacities are taking into consideration during calculation technological processes consist of :  time schedule of production orders  calculation of capacities  harmonization of capacities  planning continuity of production

Controlling of production orders characteristic activities:  releasing of orders into production  preparation of production documentation  control of the production safety  short term schedule of production

Monitoring of production orders control the making progress of production order activities  control time keeping of schedule in short term production  control of quantity  control the fulfillment terms of production orders  control of machine capacity usage

Requests on PPS ability to respond quickly on customer’s demands from the view of size, terms and properties of products ability to introduce new products into going production keeping beneficial production costs accurate forecast of material demands

Requests on PPS possibility of early recognition and mastering the capacity differences unloading from routine activities support the production control, which is oriented on material flow stabilization of production program

Choice and application of PPS application of PPS system into company = high costs PPS system needs to be adapted on real company conditions, that are the most modified by:  company profile  actual company’s organizational structure  actual structure of production  progress of material flows  existent structure of system collecting and data processing