1. Introducing Adaptive 3D Control for Sigma Air Manager™

2. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com What is “3D Control”? 3D Control constantly monitors energy expenditure associated with: 1.Control losses 2.Switching losses 3.Pressure flexibility 3D Control adapts to the system demands proactively: 1.Calculates system buffer volume 2.Monitors the rate of change in pressure 3.No longer reacts at predetermined intervals, but predicts when to turn on additional compressors 2

3. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Continuous Monitoring Satisfy demand Lower pressure to save energy Increase load-time to decrease switching losses Equalizes compressor usage to decrease maintenance costs Choose correct compressor size to match demand Current pressure Current demandResponse times Remaining idle times 3

4. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Types of Losses Representation of a switching cycle Switching losses (1) Motor start (6 – 12 s) (2) Internal pressure build-up (1 – 6 s) (3) Venting (1 – 6 s) (1, 2, 3) Reaction times = Energy Losses Control losses (4) Idling (4 – 15 min) load (1)(2)(3)(4) kW time 4

5. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Handling the Switching Losses (1,2,3) Switching compressors to load Prefer idling compressors Selects most energy efficient compressor Switching compressors to idle Prefer compressor with minimal idling time Switch compressors to Quadro mode to minimize idling time load (1)(2)(3) kW time 5

6. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com load (4) kW time Handling Control Losses (4) Switching compressors to load Prefer idling compressors Prevent short off phases Reduce startup losses Choose compressors based on demand Reduces switching frequency t State t 6

7. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com p t p Req p limit p t p Req p limit p t p Req p limit Low demand Medium demand High demand p unload E loss p unload p Req p limit p unload E loss p Req p limit p unload E loss p Req p limit ∆p Pressure Flexibility 7

8. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Former Algorithm vs. 3D Control Keep pressure within specified boundaries: With minimal energy consumption For any compressed air consumption profile With simple parameterization p t Pressure Band Control3D Control Low Pressure Alarm p u2 ∆p p set p u1 p o1 p o2 p Req ∆pt Pressure Range 8

9. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Algorithm Comparison 98.6 psi 108.8 psi Former Algorithm3D Control Pressure Band Control Adaptive Pressure Variable Range 9

10. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com p t p Req p u1 p u2 Pressure Band Control 3D Control Former Algorithm vs. 3D Control With 3D Control: Compressors switch state just in time Correctly sized compressor is chosen The SAM is adaptive and responds to the changing demands of the system rather than reacting at specified points p set 10

11. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com 1. Base Load Unit Taking Action Just in Time Estimates future pressure behavior Addresses the demand change before it is too late Considers reaction time of compressor Determines optimal moment for proper compressor to load Reaction time of compressors is learned = Adaptive Behavior 11 1. Base Load Unit

12. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Parameterization of 3D Control Minimum required system pressure (p Req ) Maximum permitted system pressure (p Req +∆p) Compressor information (psig, cfm, kW) Pressure is kept within desired limits selecting the most efficient means possible pressure time demand profile pReq ∆p pressure profile flow Low Pressure Alarm 12

13. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Updating the Existing SAM The adaptive 3D Control can be updated for any Sigma Air Manager already having V.23 software installed All Sigma Control™ compressors must be updated to the latest software version to work with 3D Control Sigma Control 2™ compressors can only work with 3D Control The material number of the software upgrade is AN777620 and the fees associated with this new software version can be found on the SAM price list Only the software has changed Hardware and material numbers will remain the same A sticker will be attached to the front of the SAM indicating “Kaeser Efficiency 3D Control” Updates must be reported to KAESER and recorded in the equipment master data. 13

14. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Installation Benefits  Proactive behavior rather than reactive behavior  Reduces overall average system pressure  Improved compressor control  Automatic matching of compressor size to current consumption  Self adjusting  Maximum cost effectiveness  Simple parameterization and commissioning  Reduced installation time  Runs on existing hardware – No additional hardware to purchase SAM Adaptive 3D Features Adaptive 3D control can be retrofitted by update 14

15. “Specifications subject to change without notice”© 2011 Kaeser Compressors, Inc., USA / V1.0 / www.kaeser.com Sigma Air Manager with Adaptive 3D Control 15