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| The compressed air station that has developed over the years generally has compressors of different sizes and different ages from different manufacturers. The pressure level is much higher than is required in production. The high pressure spread responds slowly to pressure variations. Higher pressure means greater energy costs, increases leakage rates and generates artificial consumption. |
25-35% of the load energy is consumed during idle run without producing air. Frequent starts, stops and load change intervals due to rigid time and sequence parameters increase wear on the bearings and components as well as maintenance and service costs. Sequence control and pressure band regulation cut the load costs of the compressors by means of a simple pressure reduction with a common pressure differential for all the compressors. |
As a result of the time-dependent programming of the compressor sequence, the idle power has been decreased slightly. No automatic change to a different profile if the compressed air consumption changes. The result of compressor grouping in conjunction with a lower pressure differential and time-dependent load and unload control leads to significantly higher number of load changes and motor start as well as increased service costs and wear. |
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| has its own separate, relatively high pressure differential for every compressor. As a result, the pressure in the compressed air header is significantly higher than is required. The cascade controller is primarily used for compressors of identical size. | combines a tight pressure differential with time-dependent ON and OFF of the compressors when the given pressure set points are reached. Frequently, more compressors are switched ON and OFF than is required. The sequencer can also be programmed by time intervals. | controls compressors based on the required pressure value within a tight pressure band. The classification of compressors as base, medium and peak load compressors, produces rigid sequences which are accessed via programmed time intervals. A change in compressed air consumption is not detected automatically. The tight pressure band leads to unnecessary high load/no-load changes and motor starts. | ||||
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| Compressed air costs over 10 years | ||||||
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