GreenTech EC Technology: Electronic commutation - ebm
Contents
1. AC with phase angle control AC with transformer AC with frequency inverter ebm papst EC 30 qy gt 2000 4000 6000 8000 10000 mh L A Sound pressure level q Air flow Noise profile with various control methods A Phase control hum 300 Hz B Frequency converter whistling motor and device resonance caused by motor with frequency converter The all inclusive package from control to motor protection Plug amp Play Air movement at an all inclusive price Yet another of the major advantages of GreenTech EC technology from ebm papst Our EC products come with everything you may ever need PID control ampli fier interference suppression filter power filter motor protection and even a power supply for external sensors That s how easy it is with Plug amp Play If you do an application check you will soon see how many components are additionally required with conventional AC or rival products By contrast a GreenTech EC fan already contains all the necessary extras as you can see in the list below Example The all inclusive benefits of a GreenTech EC fan Fewer additional peripherals less installation work and all the useful features already installed and fully checked That s how easy it is to put ebm papst GreenTech EC technology to practical use Intelligent electronics intelligent performance Our EC products come with everything later may be needed PI2. Graphical setting of characteristic curve of 0 10 V analogue input thus even permitting implementation of off at 10 V and maximum modulation level at 1 V Resetting of fan to factory settings Direction reversal and 2 sensor contro with MODBUS RTU protocol version System version Fan Control 3 2 Article number 25713 2 0199 Scope of delivery CD ROM with Manual DE and EN in PDF format Installation program for all languages Video set up guide for Bluetooth connection Languages DE EN ES FR IT NL Fl JA ZH simplified traditional RU System requirements ebm papst Bluetooth adapter Art no 21501 1 0174 21503 1 0174 Smartphone PDA with min 240 x 320 pixel resolution Windows Mobile 5 for Pocket PC or Windows Mobile 5 Phone Edition or Windows Mobile 6 Classic or Windows Mobile 6 6 1 Premium A constantly updated list of compatible devices can be found at www ebmpapst com downloads Bluetooth 25 Interface adapter Bluetooth RS485 ebm papst fans equivped with an RS485 interface can communicate with smartphones PDAs by way of the ebm papst Bluetooth adapter for wireless programming and monitoring Diagnosis is also possible in the event of faults For this purpose the Bluetooth adapter creates ui 1 a bidirectional link between RS485 units and Bluetooth compatible computers PDAs and smartphones The adapter is compatible with the F
3. L1 Set value 2x digital Pressure sensor Pl Control device Connection box FA Example terminal assignment for differential pressure regulator Mains supply Output Pressure line connections 5 and 6 mm connection gt 1 10 30 V DC ola ola TS TE Potential free contact for setpoint 1 or 2 31 Pressure sensor for pressure regulated speed control Nominal data Type 40100 4 7380 40101 4 7380 Nominal voltage VDC 10 10 Max input current mA 1 1 Adjustment range Cut off bar 4 12 5 10 21 Factory setting Cut off bar 7 8 155 Test pressure bar 30 36 Max operating pressure bar 21 32 Max media temperature C 70 70 Perm ambient temperature C 20 65 20 65 Weight g 125 125 Control voltage 0 10 VDC Cut off Condensing pressure P bar Material Housing made of PA brass pressure connection Type of protection IP 65 as per EN 60529 IEC 529 Refrigerant Suitable for standard refrigerants R134A R407C R404A R507 Installation Simple installation via pressure connection with 7 16 20 UNF internal thread with Schrader valve opener Power supply Above 10 VDC Speed setting 0 10 VDC actuating output signal for pressure dependent speed setting of fan Delivery Individual pack 38 Pressure sensor Power supply EX Fan connection example PA
4. 50010 1 0174 50011 1 0174 10 12 10 12 1 1 min 9 3 min 9 3 0 1 0 1 1 1 1 1 10 45 30 55 2 2 Output curve Output signal 2 kHz 100 20 30 55 Temp C 50011 1 0174 EX Fan connection example O 10V 0 10V GND Temperature sensor N Power supply EJ Temperature sensor cable assignment 10 V 0 10 V GND 43 ebm papst Mulfingen GmbH amp Co KG Bachm hle 2 74673 Mulfingen Germany Phone 49 7938 81 0 Fax 49 7938 81 110 infol de ebmpapst com ebmpapst The engineer s choice
5. GreenTech EC Technology ebm papst Electronic commutation brings economic benefits The engineer s choice Symbols that define standards Green through and through In order to underline our philosophy efforts and achievements when it comes to environmental protection we have put them all in a nutshell with GreenTech The benefits of GreenTech mesh with one another from the initial development of our products through to their use and they form a circuit that finishes right where it began with the philosophy that we shall soon build another even more eco friendly and economical product Philosophy Each new development must exceed the economic and ecological performance of its predecessor Development Materials products and processes are selected and designed in an environmentally responsible manner using state of the art methods Production State of the art energy air conditioning and ventilation technology provides maximum energy efficiency in our plant Awards Environmental prizes distinctions and energy efficiency that beats even the most stringent limits speak for themselves Application Our high efficiency products use GreenTech EC technology and boast enormous energy savings with top performance GreenTech follows a firm philosophy GreenTech pays off GREEN GreenTech is pro active _ development for our TECH customers GreenTech is eco friendly production GreenT
6. Example Performance comparison for condensers evaporators z 250 The difference between AC and GreenTech EC technology is clearly illustrated by the graph below based on the example of ebm papst size 800 axial fans Our EC technology can be employed throughout the entire blue area What s more it exhibits considerable reserve 150 capacity in the dark blue area as compared to AC technology GreenTech EC technology can thus be used for peak load operation with extremely low running noise 200 100 50 A a lt q gt 5000 10000 15000 20000 25000 m n P Pressure increase q Air flow Performance spectrum AC of AC and EC fans EC EC reserve capacity Just turn down the costs Truly intelligent Here is a practical example of intelligent energy saving condenser In the case of the condenser with AC fans this is often achieved by as used for example in cooling systems can be equipped with using external switching devices to switch individual fans off and on 4 AC fans or alternatively with ebm papst GreenTech EC technology The fans remaining in operation continue to run at full speed The energy saving potential with GreenTech as compared to AC fans is quite considerable as shown by the graphs below The condenser with GreenTech EC fans achieves the same effect by way of infinitely variable speed control All fans thus remain in Example You can co
7. 1 874 2 499 3 123 3 748 11 Minimum noise emissions Sounds good Air conditioning in office buildings domestic heating systems range hoods refrigerators cooling systems in computers ventilation and air conditioning in cars and commercial vehicles are just a few examples of applications where functionality reliability and safety are all important but wherever they are users quite literally do not want to hear anything from them What you will be pleased to hear GreenTech EC fans EC blowers and EC drives made by ebm papst provide not just perfect but also barely audible operation in all applications Example Noise reduction at all speeds ebm papst GreenTech EC technology is music to the ears or rather it isn t as there is no motor noise to be heard over the entire speed range Advantage Extremely low speeds can be set at night for example when little cooling action is required The typical reso nance encountered in frequency converter operation which is sometimes even found in the EC products of our rivals and phase hum are ruled out by the design principle of our products Also the combination of AC motors with a frequency converter without an all pole sine filter can lead to winding and bearing damage dBA u tt A a ON 7245 fii tls ane A EEE ERDAN E u gt a EEE LIA u G m m a a a a SRE
8. 3 dB speed drops by 50 if two fans are switched off The blue curve shows the reduction to half the air flow yields an improvement of 15 dB power consumption with infinitely variable speed control 10 Our example in figures Direct comparison of four conventional AC fans in on off operation with four GreenTech EC fans featuring continuous speed control The table below only reveals the benefits Unrivalled A win win situation for operators and the environment Companies mankind and the environment all benefit from the use of intelligent GreenTech EC technology from ebm papst It is not just in terms of power consumption The consistently higher efficiency levels of our GreenTech EC motors mean that the energy savings in real terms are a lot greater again On off operation To adapt the air performance to differing cooling require ments it is still standard practice to switch individual AC fans off and on Modulating operation All devices and fans remain in operation Optimum cool ing performance is achieved by continu ously regulating the speed of all fans Direct comparison Speed control con siderably reduces power consumption even by as much as 94 given demand based adaptation to a quarter of the rated capacity Potential saving in kWh With the assumed load profile shown on the right modulating operation considerably cuts the amount of energy required Over the course of a year this amounts to a reduct
9. EC fans already surpass the requirements of the ErP directive for 2015 And that s not just talk but a proven fact Example Energy savings in the air conditioning sector And here s another fact Even at varying speeds GreenTech EC fans maintain their extremely high efficiency levels whereas there is a sharp drop in the already inferior efficiency of AC motors In the case of condensers evaporators operating with our EC fans for example energy savings of more than 10 can be achieved even just at nominal speed The relative and absolute savings become yet more apparent with infinitely variable control As compared to GreenTech EC technology conventional phase control may require more than twice as much energy depending on the operating point N f Fi co H 1800 ZA Fa 1 y e 4 eo 7 1600 AC with phase angle control TT EEE AC with transformer x A o AC with frequency inverter i an ES 1400 _____ ebm papst EC ww F e if pis P Pd ld 4 1200 A aa WTA F y 0 4 a Pi IT PA FA P a rs ai gf Pa Ps LA LA 800 FF Bee oo _ 200W a e 7 36 600 PA 400 200 A a q gt 7000 9000 11 000 13000 15000 17 000 m h Power Sansum ption for P Inputpower q Air flow various control methods 29 savings E g A3G800 axial fan A heat exchanger operates with 6 fans Given an
10. Fans ebm papst Bluetooth Adapter Art No 21503 1 0174 EX Example of fan terminal assignment KL3 KL2 PE KL a 2e al a os al ga RSB Aini U Ain2 U 10 V Aini Din1 ah H Eel The Bluetooth adapter operates on the same licence free 2 4 GHz frequency band as wireless LAN networks The frequency hopping method used here guarantees interference immunity Note Just one single Bluetooth adapter is required for communica tion with any size of system External sensor Pressure sensor Temperature sensor MODBUS RSA RSB PDA Smartphone Bluetooth EJ Bluetooth adapter connection Q Q QO RSA RSB GND 20 V 27 Nominal data Typ Power supply Current supply Dimensions Operating mode RS485 connection Data rate Insulation Status display Housing Type of protection Scope of delivery 28 USB Adapter RS485 The ebm papst USB RS485 adapter is used to connect RS485 devices to a PC ebm papst EC Control software as of version 2 0 is required for this purpose The software also contains the USB drivers needed for operation of the adapter 21490 1 0174 VDC 5 via USB mA 100 via USB mm 56 0 x 31 2 x 24 5 RS485 2 wire operation without echo internal termination with terminating resistor pre configured 2 wire Max cable length 1 200 m 9 600 bits s 1 000 m 19 200 bits s Up to 3 Mbits s 2 500
11. Pressure sensor connector assignment Signal 0 10 V Control Power 10V 0 10VDC GND Tacho L N PE GND 10V Connection line available as accessory 39 Temperature sensors control modules Nominal data Type Nominal voltage VDC Current input mA Output voltage VDC Output current mA Output impedance kQ Temperature control range C Weight g Output voltage as a function of temperature Temp C 50002 1 0174 Output voltage as a function of temperature Temp C 50005 1 0174 40 50002 1 0174 18 60 10 2 10 0 1 6 8 30 2 50003 1 0174 50005 1 0174 18 60 15 30 10 10 0 10 0 10 0 1 1 0 6 8 1 1 99 10 45 20 80 2 2 UN 10 Tolerance 3 K Temp C 50003 1 0174 Tolerance 3 K Temperature sensor Power suppl w a EX Example of fan terminal assignment EJ Temperature sensor cable assignment KL3 KL2 PE KL 2 2 JIE allg lt QO gt 18 60 VDC 0 10 VDC GND 21 2 53 5 MIN ee 18 60 VDC 0 10 VDC GND 15 30 VDC 0 10 VDC GND 41 Temperature sensors control modules Nominal data Type Nominal voltage VDC Input current mA PWM VDC Output current mA Output impedance kQ Temperature control range 2G Weight g Output curve Output signal 2 kHz 100 6 10 45 Temp C 50010 1 0174 42
12. V overvoltage protection Via LED Green Rx receive Red Tx transmit Yellow Power ON Plastic housing IP 10 Adapter Plug in screw terminal USB cable Connection of USB RS485 adapter based on the example of a MODBUS RTU compatible fan The device is connected by means of the USB connecting cable pro vided to a USB port of the PC The yellow LED lights after connection Power supply Fans Interface converter Art No 21490 1 0174 EX Example of fan terminal assignment KL3 KL2 PE KLI 2 gt S22 sisigys S S S 3 Fai lt a gt 2 lt a Q 7 nn ZI ce 9 Oo M IN oO eels ETE aS Note Install the USB drivers prior to connection to the USB port The drivers are included with the EC Control Art no 25714 2 0199 and EC Clone Art no 25716 2 0199 software Connection to RS485 bus Connect the A and B cables of the RS485 bus to the screw terminal and insert this in the adapter External sensor Pressure sensor temperature sensor EJ Interface converter connection A RSA B RSB 29 Operating mode Safety Electrical isolation Ethernet connection RS485 connection Protocols used Status display Housing Type of protection Installation Scope of delivery 30 Ethernet interface conve
13. and a good selling point Intelligent electronics help to make savings One of the greatest strengths of EC technology is the fact that it permits regulation based on demand Optimum results can however only be achieved if this is put to the best possible use Here again ebm papst leads the way Firstly by integrating a wide range of func tions into all GreenTech motors and fans and secondly by providing numerous connections and interfaces offering virtually unlimited control and networking potential But that s a whole new story starting on the next page 19 Intelligent electronics with a wide range of funcions The systematic approach GreenTech EC fan networks are employed in refrigeration and air MODBUS RTU the reliable standard protocol conditioning systems for building ventilation in clean rooms and many other areas of application For communication with the bus systems Interface RS485 the ebm papst product range can offer various interfaces and soft Baud rate 19 200 bits s ware solutions to suit each field and provide optimum support for Protocol frame 8E 1 setting up and monitoring installations Data exchange To ebm papst MODBUS RTU parameter specification Measurement control regulation automation Number of nodes up to 247 Intelligent control and regulation functions are alongside outstanding Devices on BUS all MODBUS RTU compatible devices energy efficiency some of the great benefits off
14. but rather look at every product as a whole with a view to exploiting all possible potential for increasing efficiency whether this is to be found in materials electronic control or aerodynamics A few examples We have not finished yet Without doubt Our EC technology forms the hub of GreenTech around which everything revolves And we intend to keep it that way Even so there is no let up in our constant research and development activities in all areas of fan and drive technology Innovations which keep on setting new standards are the outcome Revolutionary materials HyBlade and RadiCal The way in which innovative motor and ventilation technology can ideally complement one another is perfectly illustrated by our fans with a hybrid materialstructure HyBlade and RadiCal A combination of metal and plastic elements in the axial and centrifugal impellers makes them particularly light and offers potential for optimum aero dynamic design culminating in a previously unattained level of energy efficiency in conjunction with near silent running The future belongs to biomaterials Increasing efficiency whilst conserving resources the comprehen sive GreenTech approach starts with the development and production of our motors and fans We are already in the process of developing materials incorporating regenerative raw materials with a view to replacing certain oil based plastics in the future Good for the environ ment
15. C200 EP1000 DPC200 EP2000 DPC200 EP4000 Nominal voltage VDC 10 mA 10 30 10 30 10 30 10 30 10 30 Current input at 10 VDC mA 7 ip 7 7 7 Current input mA 12 12 12 12 12 alternative at 24 VDC Measuring ranges available Pa 0 50 0 500 0 1 000 0 2 000 0 4 000 Perm ambient temperature C 0 50 0 50 0 50 0 50 0 50 Weight approx g 90 90 90 90 90 Functions Selection of control or measurement mode Analogue output 0 10 V with adjustable limitation in control mode 2 set values can be set in the device Pl algorithm with separate input of P and parameters and control response as for ebm papst products Switchable measurement quantities differential pressure or air flow Switchable units metric or imperial Standard or Inverse control response Air flow calculation following input of k factor Pressure sensor For non corrosive gaseous media Smallest span 0 50 Pa Largest span 0 6 000 Pa Overload safety 0 2 bar Cable entry M16 x 1 5 screw terminals Type of protection IP 54 Inlet nozzles Suitable inlet nozzles for determining air flow can be found in our product documentation 36 EX Example of fan terminal assignment Din2 Din3 GND Ain2 U 20 V Ain2 Aout KL2 PE KL1 RSA RSB GND Aini U 10 V Ain Din NO COM NC PE
16. D control amplifier Power factor controller power filter Interference suppression filter Motor protection Sensor power supply Shielded wiring RS485 MODBUS RTU Excess temperature protection not necessary ON OO OF FP N Motor current limitation Alarm relay Soft start Connection options DER SR EEE N The features in detail 1 PID control amplifier A corresponding sensor with standard analogue output 0 10 V or 4 20 mA is all that is required for pressure or temperature regulation Set value control range direction of action and control parameters are all adjustable 2 PFC power filter reduces circuit feedback At rated power the power factor is typically greater than 0 9 3 The interference suppression filter reduces the emission of conducted and radiated interference voltages and guarantees immunity to interference in rough industrial environments 4 Motor protection prevents overloading of the motor in all operating condition 5 The power supply for external sensors is provided via the fan 6 The integration of the commutation electronics into the motor avoids the need for shielded wiring 7 The open protocol standard RS485 MODBUS RTU provides numerous setting options for functions parameter adjustment options and integration of the fan into higher level systems 8 Excess temperature protection prevents damage to the motor and electronics in the event of overload 9 Motor current limit
17. Nominal voltage alternative VDC 50 mA 20 Pressure control range PA 50 500 Perm ambient temperature C 25 60 Functions Integrated PID controller Day night linear preset target value Integrated set value potentiometers for day and night External preset target value with potentiometer Pressure sensor 0 500 Pa Burst pressure 200 mbar For non corrosive gaseous media Type of protection IP 55 Inlet nozzles Suitable inlet nozzles for determining air flow can be found in our product documentation 34 Potentiometer Selector switch Pressure regulator Set value device Pressure sensor Connection box I ION P ower suppl w a EX Example of fan terminal assignment FA Example of terminal assignment for pressure controller with potentiometer Mains connection KL3 KL2 PE KLI olz lols w ale i 5 5 5 7 5 a gt l 28 8 alls gs AJAS Z y lt Control connection gt mm gt gt a ao Qa O 2 2 gt o a 218181221212 21812 8 s AE 8 81821219 18142 SIE me Sl Se ze S Fa oe Eos eo 35 Differential pressure controller With integrated pressure sensor Nominal data Type DPC200 EP50 DPC200 EP500 DP
18. ak detection Parameter set source parameter set Motor stop enable Analogue input curves Direction of rotation source Preferred direction of rotation direction of rotation Sensor actual value source Motor derating parameter as of MODBUS 5 00 Limit speed for run monitoring Communication parameters baud rate and parity Shake loose function as of MODBUS 5 00 Relay drop out delay as of MODBUS 5 00 ebmBUS MODBUS RTU 24 Program version EC Clone 1 10 Article number 25716 2 0199 Scope of delivery CD ROM with Manual EN in PDF format Installation program Quick video guide Driver for USB interface converter Adobe Reader Language EN System requirements Windows XP Service Pack 3 Windows 7 Service Pack 1 or Windows 8 Approx 20 MB space on hard disk Monitor with a resolution of at least 1024 x 768 pixels One of the following types of interface converter e USB Art no 21490 1 0174 e Bluetooth adapter Art no 21503 1 0174 and 21501 1 0174 e Ethernet Art no 21488 1 0174 21489 1 0174 Control software for smartphones The perfect mobile solution ebm papst fans equivped with an RS485 interface can communicate with smartphones PDAs by way of the ebm papst Bluetooth adapter for wireless programming and monitoring Diagnosis is also possible in the event of faults For this purpose the Bluet
19. an Control EC Clone and EC Control 2 1 programs Bluetooth Nominal data Type 21503 1 0174 Power supply VDC reversible 15 28 Integrated Li IO battery VDC mAh 212200 Transmission power mW 1 Class Il Range depending on ambient conditions m 10 20 Dimensions mm 120 x 65 x 40 Battery operation h gt 24 Operating mode RS485 2 wire operation without echo automatic switching between transmit and receive RS485 connection Molex Micro Fit 4 pole socket matching connector Molex Art no 43025 0400 with 43030 0001 Frequency band ISM band 2402 2480 MHz Status display By way of 3 LEDs Duo LED green top Voltage OK device switched on Green yellow flashing Bluetooth link established Red centre Tx data communication PDA smartphone fan Red bottom Rx data communication Fan PDA smartphone Housing Plastic housing Type of protection IP 20 Scope of delivery Bluetooth adapter and 4 wire connecting cable with corresponding Molex connector and core end sleeves Integrated battery 3 7 V plug in power supply for worldwide use for battery charging even without fan connection Product description 26 Connection of Bluetooth adapter based on the example of a MODBUS RTU compatible fan The Bluetooth adapter is connected directly to the fan The fan voltage of 15 or 20 V is used to supply the adapter Note Voltage reversal does not represent a problem for the Bluetooth adapter Power supply
20. as one of the first manufacturers to recognise the economic and ecological advantages offered by EC technology and was instrumental in promoting its development We launched the world s first EC DC compact fan on the market right back in 1965 30 years before any other manufac turer And so GreenTech EC technology made by ebm papst is the outstanding product of a consistent efficiency strategy in other words it is the most authentic EC technology The EC technology pioneer ebm papst Without doubt the development and advancement of EC technology represented one of our most significant challenges Today the largest range of EC fans and motors in the world is evidence of our success For more than 13 years mains powered GreenTech EC technology used for example in clean room applications has represented the global standard guaranteeing reliable operation 24 hours a day every day of the year The outstanding ecological and economic advantages offered by GreenTech EC technology make it the ideal choice both for new users and anyone wishing to convert from AC to EC The topic of sustain ability has long since become a crucial purchasing criterion not just for our customers but for their customers as well It goes without saying that we intend to carry on developing and perfecting GreenTech EC technology to make sure we are able to satisfy all the future demands of our customers the market and society in general and no
21. ation provides additional safety 10 Any faults occurring are immediately signalled by the integrated alarm relay 11 A soft start function and electronic power limitation on motor starting ensure gentle fan start up 12 Numerous connection options e g for external sensors we provide many connection possibilities for maximum flexibility 13 Fewer types Simplified logistics Start saving even before installation Our Hollenbach factory is not only a centre of expertise but also reflects our GreenTech philosophy The outcome 90 less energy consumption in production A shining example of our comprehensive approach in theory and in practice GreenTech EC technology the ideal substitute for AC technology In addition to being far superior in terms of energy efficiency noise minimisation and intelligence it helps to simplify logistics Just a few GreenTech EC axial fans are enough to replace up to 8 different AC axial fans with different blade angles on a more or less 1 to 1 basis This ensures the maximum possible application flexibility all around the world The combination of fewer types simpler warehousing and less complicated logistics all adds up to a greatly reduced finan cial outlay One takes the place of many When using GreenTech EC instead of AC Assuming optimum efficiency and an ideal choice of motor size for the application concerned it is always possible to replace 8 fans of AC type with just 4 Gree
22. average utilisation rate of 75 there is potential for saving more than 24 MWh per year That corresponds to roughly 14 4 t of CO and represents a saving of 2 814 euro 67 savings E g W1G200 axial fan 40 fans operate in refrigerated display cases in a small supermarket On account of the lower level of heat generated by the energy saving motor the operating time is 30 shorter This translates into a potential annual saving of more than 9 4 MWh and 5 6 t of CO Cost saving 1 080 euro 22 savings E g R3G500 centrifugal fan 6 precision air conditioning units each equipped with 3 GreenTech EC fans operate in the IT rooms of a computer centre Given a 100 duty cycle it is possible to save up to 50 MWh of electricity That corresponds to around 30 t of CO and 5 898 euro per year Based on CO emissions of 600 kg MWh German energy mix and 11 69 cents kWh average price paid by industry for electricity in Germany as at January 2010 source VEA BDEW Higher Tech GreenTech EC technology surpasses standards Natural resources do not last for ever so certain materials are becoming ever scarcer and more expensive Consequently there is a growing demand for energy saving products not just on the part of consumers but also in the light of new legislation to limit energy consumption and protect the climate In adopting the Kyoto protocol the European Union has committed itself to reducing CO emissions b
23. ce converter e Bluetooth adapter Art no 21501 1 0174 e USB Art no 21490 1 0174 e Ethernet Art no 21488 1 0174 21489 1 0174 UL EC Clone commissioning software for Windows EC Clone provides efficient programming for fans manufactured in small series with customer specific configuration Following readout of the fan configuration from the fan or from a file the configuration is transmitted to other fans with or without alteration of the device address of the target fan EC Clone is also capable of identifying fans with an unknown fan address The touch screen friendly design of the software means there is no need for a mouse or keypad at the workplace Functions The software enables the following parameters to be copied onto other fans Mode of operation speed control sensor control PWM control Saving of set value in EEPROM Set value source bus versus analogue input Controller function heating cooling Default set value for both parameter sets P I D controller with D 0 as fixed setting Maximum speed Min Max PWM Set value 0 and 1 active with digital interpretation of analogue input Reduction factor Sensor parameters Run up and run down time Control function source bus versus external terminal switch Qutput function of analogue output Qutput curve of analogue output Emergency operation function cable bre
24. ct match for our EC fans but we work together with specialists in this field Our ebm papst They can be divided into two groups programmable logic controllers approved controller range forms the perfect link between our products PLC and application controllers Whereas a PLC is programmable an and those offered by the automation experts We do not just sell fans application controller is pre programmed and programmed for specific we help to provide the complete package applications We work with specialists for all types of system The advantages of ebm papst approved SMS Database controllers EJ E Mail Server Extremely simple programming through Ethernet amp FIP access to libraries Link with the modern IT world iPad apps SMS e mail FTP or hardware such as touch panels smartphones Integrated file server evaluation options Air handling unit AHU 1 Condenser 1 using office applications all ln Integrated web server control with web browser possible PLC PLC Guaranteed tailor made solutions for PLC only AHU 1 Condenser For detailed information on the ebm papst approved controller range visit www ebmpapst com controller Pressure sensor Pressure sensor GreenTech ee GreenTech EC fan EC fan Temperature Temperature sensor sensor GreenTech GreenTech EC fan EC fan MODBUS RTU 19 Software and interfaces at a glance The right combination Which control software is suitabl
25. e for which input device and what differences are there between the functions This double sheet provides a clear overview for easy reference What goes with what Interfaces and protocols supported Software EC Control EC Clone Fan Control EC Controller Page 22 Page 24 Page 25 Page 32 Applications Service purposes Production Service purposes and Stand alone control unit and stationery copying and archiving mobile use for refrigeration and system monitoring of settings air conditioning Hardware PC Laptop PC Laptop PDA Smartphone Bluetooth adapter Page 26 USB adapter Page 28 Ethernet RS485 interface converter Page 30 RS485 MODBUS RTU Page 32 20 Characteristic features of control software for PCs and PDAs EC Control Fan Control EC Controller Interrogation and modification of parameters of one fan e e Modification of parameters for group entire system e Group view floors e Detailed fault history with long software run time e _ Mapping of system layout room plan Search for fan with unknown address e Graphical setting of parameters E mail in the event of faults u Multiple language support e Support for RS485 ebmBUS e a Support for RS485 MODBUS RTU e Support for Ethernet and various sub nets Modulation level display on fan symbol Display of information under fan symbol _ Representation o
26. each application and for every power range required Intelligent electronics provide compen sation for synchronisation tolerances leaving our customers to enjoy only the positive aspects Designed for the future ErP2015 ready More than 40 years of experience in EC technology Intelligent electronics for numerous control functions Simple direct swap from AC to GreenTech EC technology gt GreenTech as a tangible selling point What s more GreenTech EC motors and fans can be used absolutely anywhere They are suitable for operation in both DC and AC systems single and 3 phase Size is now no longer a problem either By com pletely integrating the electronics into the motor the dimensions of many of our EC fans are exactly the same as those of their AC equiv alents So there is no longer any advantage to using conventional AC fans And this is not just the case for new applications Changing from AC to EC is well worthwhile in view of the far superior efficiency and could not be easier thanks to plug amp play 30 savings on average A proud claim Whether we are talking about ventilation air conditioning refrigeration information technology heating systems building systems industrial automation automotive engineering or telecommunications there is aneed to save as much energy as possible wherever motors are employed in drive systems or for ventilation GreenTech EC technology leads by example All our
27. ech is acknowledged and certified Contents In our role as development specialists the economic success of your Background 415 products is just as important to us as it is to you After all maximum Efficiency 6 7 efficiency is always a top priority when we develop fans blowers ErP 819 and drive concepts for use in a wide variety of applications Cost Intelligence 10 11 efficiency is the aim and energy efficiency is one of the most direct Comfort 12 1 13 ways of getting there This approach also involves accepting respon Comprehensive concept 14 1 15 sibility for environmental issues We are sure this brochure will Communication 16 19 convince you of how ebm papst GreenTech EC technology can Software 20 21 contribute to both economic success and environmental protection EC Control 22 23 to everybody s advantage EC Clone Fan Control 24 25 Bluetooth 26 27 USB adapter 28 29 Ethernet 30 31 EC controller 32 33 Pressure controller 34 35 Pressure sensor controller 36 37 Pressure sensors 38 39 Temperature sensors temperature modules 40 43 GreenTech means ecologically improving _ lt every I new product GreenTech EC technology The original EC technology can mean a lot of different things These days the term is broadly used to refer to a variety of drive concepts such as permanent magnet motor ECM electronically commutated motor and BLDC brushless DC motor ebm papst w
28. er GreenTech EC technology is the right answer for motors as well The situation for electric motors is basically the same as for fans Since June 2011 they have been required by the EU ErP executive order no 2009 640 EC to at least satisfy efficiency class IE2 Otherwise these motors can no longer be operated in Europe The directive does not however apply to all of today s commonly used motors EC external rotor motors used for example to drive energy efficient fans are not subject to this ruling Comparison of their efficiency levels with the values demanded by this directive does however quite clearly reveal Innovative GreenTech EC motors from ebm papst already easily sur pass the required efficiency standard ErFP2015 EXCEEDS THE NORM Top performance under all conditions Guaranteed Just one example of flexible fan operation Air conditioning and refrigeration in a supermarket This application demands full speed and capacity in summer at peak load reduced capacity in the winter months and quiet running at low speed during the night GreenTech EC technology from ebm papst is the ideal answer under these theoretical but nonetheless realistic conditions Intelligent control functions make it possible to quite simply adapt air conditioning and cooling to all the requirements of manufacturers operators consumers and the general public whilst guaranteeing considerable savings in terms of both energy and costs
29. ered by ebm papst Fault detection CRC16 GreenTech EC technology From simple read out of the current speed Software support EC Control to the configuration of a sensor control system the electronics EC Clone integrated into our GreenTech EC fans provide plenty of options for Fan Control achieving the demand based efficient operation of installations Other values also possible as of ebm papst MODBUS specification 4 0 ug For installations with more than 31 fans use may have to be made of RS485 repeaters Based on the type of use application working environment and equip depending on the type of fan ment concerned various concepts ensure reliable actuation with GreenTech EC fans These include analogue actuation options such as 0 10 V and 4 20 mA for sensor connection and a set value gen erator connection Digital control functions and complex regulation GreenTech EC technology and MODBUS RTU the benefits concepts can however also be implemented by way of a digital bus system MODBUS RTU Remote interrogation of external sensors Open globally recognised communication standard connected to our fans is a further possibility non proprietary Suitable for integration into a central energy and The next few pages outline the combination options available with our data management system software and peripheral equipment packages such as the Bluetooth Interrogation of operating statuses wireless standard for sett
30. f the system in a tree structure Support for multiple configurations in one installation e User manual PDF e DE EN FR JA e DE EN e DE EN Timer Z Integrated help system English Extended functions for clean rooms _ Key e Feature provided e Partly not fully available Not provided Supported languages vary depending on product Please request white paper 21 EC Control our high performance control program Keeps everything in check The ebm papst control program EC Control provides detailed control and monitoring of fan groups in ebmBUS and MODBUS RTU networks There is nothing complicated about the multi lingual intuitive user interface in a familiar Windows system environment The positions of fans can easily be determined in the layout plan of the storey con cerned for instance So you can always keep an eye on all fans even if there are thousands of them in a network Version 2 0 saw the introduction of lots of new features such as extra languages extended help functions a set up wizard and a revised Tan setting dialogue arranged in self explanatory categories This makes setting up the system the Ethernet RS485 interface converter and the fan parameters easy and convenient EC Control software for EC systems EC control permits the visualisation and programming of ebmBUS and MODBUS RTU fan networks and can be configured for USB as well as serial and Ether
31. fan computer or other software supported input devices Integrated keypad control with an LCD is available for the programming of new The EC controller operates in combination with external sensors as a applications and for monitoring stand alone control unit for fan networks Factory default applications make commissioning easy there is no need for connection of a EX Example of fan terminal assignment External sensor Pressure sensor temperature sensor e Power supply O EC Controller i pen lo oe a wif a D L FE F a EI a TH T 5 F FA Example of EC controller terminal assignment KL1 1 2 8 gaja KL3 KL2 PE KL KL2 KL3 N lt lt gt D Elle alla al o a x lt x EVES ZS sila al 2 2 cc 2 222 2 51 IA ISlaliaiaiziz2 alas gyal alal sis a Ro 55 5 c so cc cc ie N malz g D gt 2 2 gt gt H lt ao lt A l T N 2 gt gt gt 0 2 2 2 a m din 2115 191619 IN sl E Else 222200 amp zes 2 7 2 3 lt Ss gt 5 ey SS St S Sl ce cc oc dd dd 33 Pressure controller with integrated pressure sensor Nominal data Type CCC 000 AC04 01 Nominal voltage range VAC 1 100 277 Frequency Hz 50 60
32. ing and operating our fans as well as the Networking with other bus systems e g via BAC Net various communication standards KNX LON Works and enOcean Remote interrogation and automation in conjunction with other MODBUS RTU compatible devices actuators and sensors Use of existing function libraries High system and transmission reliability For further information on MODBUS RTU visit www modbus org tech php Bluetooth 16 Intelligent networking and reliable control To keep everything in check There are hardly any fan applications in which the numerous commu nication options provided by our GreenTech EC technology do not work to your benefit In the form of remote monitoring via internet SMS e mail or Bluetooth for example All the necessary information from speed to motor temperature and operating or fault messages is available at all times and if required all around the world Remote monitoring made easy With a modern IT infrastructure the functions are monitored by way of MODBUS RTU The information can be processed and evaluated using MODBUS standardsoftware for example or by means of ebm papst EC Control or Fan Control or with customer software There are basically two remote monitoring options One alternative is to use ebm papst s own EC Control software on a host PC with an interface converter The host PC can then be accessed by way of remote desktop software e g VNC Team Vie
33. ion of 56 Potential saving in euro The use of innovative GreenTech EC technology is always a good deal for the operator to the financial advantage of all users it also more importantly helps to conserve valuable resources But that s not all On top of the saving effect you can also expect far lower noise emission levels GreenTech EC fans run even more quietly at low speed and are thus hardly noticeable AC On off operation of AC fans Air performance Number of fans in operation Speed Power consumption in kW 100 4 100 7 40 75 3 100 555 50 2 100 3 70 25 1 100 1 85 EC Modulated operation Speed control of GreenTech EC fans Air performance Number of fans in operation Speed Power consumption in kW 100 4 100 6 68 75 4 75 2 84 50 4 50 0 84 25 4 25 0 11 Air performance Reduction in power consumption with EC 100 10 75 49 50 77 25 94 Specimen calculation Time at load level Hours per year at load level AC Power requirement for EC Power requirement for mod on off operation kWh per year ulating operation kWh per year 10 at 100 876 6 482 5 852 30 at 75 2 628 14 585 7 464 40 at 50 3 904 12 965 2 943 20 at 25 1 752 3 241 193 8 760 37 274 16 451 With this load profile the annual reduction in energy consumption is 56 Saving with EC Saving with EC Saving with EC Saving with EC per year 0 09 euro kWh per year 0 12 euro KWh per year 0 15 euro kWh per year 0 18 euro kWh
34. nTech EC models The graph says it all 4 EC models are enough to cover the entire blue area whereas without additional speed control AC can only be used on the black curves 14 Suitable for use worldwide ebm papst GreenTech EC fans are designed for a wide input voltage range Consequently the characteristic curve hardly changes over the entire voltage and frequency spectrum thus ensuring that our fans can be used all over the world whatever the voltage and frequency e 3 phase 200 240 VAC 50 60 Hz e 3 phase 380 480 VAC 50 60 Hz e 1 phase 200 277 VAC 50 60 Hz e 1 phase 115 VAC 50 60 Hz Each can be regulated to the required operating point 200 150 100 AP gt q gt 5000 10000 15000 20000 25 000 m n Py Pressure increase q Air flow AC with various blade angles EC GreenTech innovations That s where the future lies The ErP directive for 2015 quite clearly shows EC technology from ebm papst is years ahead of its time Not surprisingly as we were one of the first technology companies to recognise the potential of electronic commutation and systematically promote its advancement To stop now and rest on our laurels would not do justice to our claim to be the leading innovative company in the field of fans and drive systems And so we continue to pursue our research and development work We do not just concentrate on the actual motor
35. net interface converters Starting with version 2 0 EC Control also supports the Bluetooth adapter Several interface converters can be connected for shorter latency The software supports the maximum number of devices permitted by the bus system concerned up to 7 905 fans with ebmBUS and 247 with MODBUS RTU This can however be extended by employing additional sub net addressing It is then possible to use each fan address not just once per system but once per interface converter As a result up to 4 x 247 fans are then supported if using the MODBUS RTU protocol and 4 x 7 905 fans with the ebmBUS protocol The variable EC Control user interface makes it easy to distinguish between the various interface converters if so required It then just Shows the entries of relevance to the particular system Further functions include support for asecond monitor amanagement tree structure to enable specific fans to be located in complex systems and online help 22 Functions Setting of more than 40 fan parameters e g mode of operation set value and control parameters Changing of fan address also using MODBUS 5 0 auto addressing Readout of fan parameters such as actual speed serial number and production date Readout of fault status and fault memory Saving of various configurations as exportable and editable profile Monitoring of installations including the possibility of reporting faults by e mail Manageme
36. nt of several systems within one program installation Support for Ethernet RS485 interface converters as well as USB and Bluetooth RS485 Simultaneous monitoring of ebmBUS and MODBUS RTU based system components requires several interface converters Output of status messages via USB relay box Art no 10450 1 0174 with the option of triggering external action e g indicator lamp Monitoring of up to 4 x 247 fans with MODBUS RTU systems and 4 x 7 905 fans with ebmBUS systems Extended export and import of attachments in CSV format with all the relevant information also for exchange between operating systems with different language versions rk USB relay box Art no 10450 1 0174 for processing various fan status messages System version EC Control 2 1 Article number 25714 2 0199 Scope of delivery CD ROM with Software in DE EN ES FR IT NL Fl PT BR JA ZH simplified traditional RU Operating instructions in DE EN JA FR Application manual in DE EN JA FR RU Quick video guides System requirements Windows XP Service Pack 3 Windows 7 Service Pack 1 or Windows 8 Approx 60 MB available space on hard disk extra space is required for the driver if using the USB relay box Monitor with a resolution of at least 1024 x 768 pixels and 16 bit colour depth CD ROM drive only required during installation At least one of the following types of interfa
37. ooth adapter creates a bidirectional link between RS485 units and Bluetooth compatible computers PDAs and smartphones The adapter is compatible with the Fan Control EC Clone and EC Control 2 1 programs Fan Control software for smartphone PDA Fan Control can be used with both ebmBUS and MODBUS RTU devices For MODBUS RTU use the software is provided with graphical and numeric setting options and permits internal fan back up of the current settings as well as the storage of two parameter sets e g for daytime and night time operation The emergency operation function permits the specification of a set value which the fan adopts auto matically if no bus communication has taken place for a set period of time Functions Monitoring of fan groups Status display for connected fans Programming of individual fans e g alteration of fan address Alteration of fan operating mode speed control PWM control sensor control Alteration of set values speed direction of rotation etc Setting of control parameters also graphically Alteration of min max values Graphical setting of min and max PWM and set value as well as control range for sensor control P controller only Readout of fault status Search for unknown device addresses Setting of sensor characteristic for sensor control Setting of run up and run down ramp soft start Readout of a wide range of fan parameters MODBUS RTU only
38. plementing complex automation tasks typical applications include shopping centres schools office blocks swimming baths bakeries and butchers shops The diagram below shows how the individual components can be ideally linked Three levels of communication MODBUS RTU is the ideal basis for data transfer for incorporating EC technology into control and regulation processes This example shows the form of networking which could be employed in a large building complex The network hierarchy is arranged on three levels The coordinating level is the level on which all information is collated The monitoring centre is the building control system where all data are recorded and analysed for general management tasks and system optimisation With the help of the stored data it is also possible to analyse usage patterns over a lengthy period and use this as a basis for planning the future utilisation of equipment Numerous different bus systems can be employed to link the coordi nating and automation levels The process data of the higher ranking coordinating level e g a BACnet system are made available by way of the bus systems The field level is where the actual actuators operate such as the ebm papst GreenTech EC fans and motors There are also numerous sensors for measuring the ambient temperature or the pressure in the coolant pipes for example Building e g BACnet 3 A control Building Automation Cont
39. rol mm System Es oO E D Input Output Input Output Kb Lights Window blinds The automation level contains the control centres for the various application areas e g lights window blinds air handling units condenser units etc Each of these installations has its own control 5 PLC PLC unit PLC programmable logic controller The PLC is a popular type lt Knie ner DCE of controller programmed to suit the application concerned Alterna tively use can be made of application controllers which are specially designed and programmed for a particular automation task Light sensor Wind sensor 1 Light 1 Window blind 1 D gt V D iL Motion sensor Wind sensor 2 Light 2 Window blind 2 18 ebm papst approved controller Just right The controllers responsible for controlling a MODBUS RTU system ebm papst approved controllers have to satisfy exacting demands On the one hand they have to GreenTech EC technology offers a wide range of control automation master the control tasks associated with the application which may and monitoring options Approved controllers make the best possible vary considerably At the same time they have to be familiar with all use of these and are available from our automation partners the functions used by the connected actuators to ensure optimum utilisation There is no universal solution for complex automation tasks ebm papst approved controllers are the perfe
40. rter RS485 Nominal data Nominal voltage plug in power supply provided VAC Power supply VDC Current input mA Frequency plug in power supply provided Hz Ambient temperature arranged in series C Ambient temperature not arranged in series C Dimensions mm Interface converter for bidirectional connection of RS485 units and Ethernet compatible PCs or Notebooks using EC Control Art no 25714 2 0199 or EC Clone Art no 25716 2 0199 software 100 240 12 48 85 50 60 0 50 0 60 105 x 75 x 22 RS485 2 wire operation without echo automatic switching between transmit and receive Electrical isolation between Ethernet and RS485 min 500 V 8 pole RJ45 socket 10 100 Mbit autosensing 9 pin SUB D connector TCP Telnet for configuration only By way of LEDs Green left Power supply Green right Data communication Red Fault Plastic housing IP 10 Standard rail mounting as per DIN EN 50022 35 Interface converter Plug in power supply RS485 cable D Sub to screw terminal Network cable crossover Cat 5 Product description DE and EN Connection of interface converter Ethernet based on the example of a MODBUS RTU compatible fan The Ethernet interface converter is used to incorporate bus compati ble EC fans into existing computer networks This permits greater flexibility with regard to the locations of the control centre and fans Apart from a power suppl
41. several levels Nominal data Type CCC000 AD06 02 Nominal voltage V 1 200 480 Frequency Hz 50 60 Power consumption W 15 Sensor power supply VDC 24 Output current mA 120 Perm ambient temperature C 0 60 Perm storage temperature C 20 60 Dimensions mm 200 x 167 x 76 Inputs outputs 24 V power supply for sensors Analogue inputs for connection of up to 2 sensors per type digital inputs 2 programmable relay outputs voltage output 0 10 V RS485 MODBUS RTU Applications Standard temperature regulation Pressure control for ventilation systems condensers 2 circuit condensers Pressure control with outside temperature compensation These applications are the factory default settings Other applications can be programmed individually Sensors Temperature sensor KTY 10 6 R25 2 KQ NTC 103AT R25 10 KQ Pressure sensor 0 100 200 500 1000 Pa output 0 10 V 0 30 bar output 4 20 mA ebm papst temperature sensors Art no 50003 1 0174 and 50005 1 0174 Other sensors can be programmed individually DE SV DA EN factory setting Plastic housing CE IP 54 as per DIN EN 60529 As per EN 61000 6 3 and EN 61000 6 2 Vertical wall mounting not permitted Exposure to direct sunlight and installation on a vibrating surface are not permissible Electrical connection by way of terminal strip Connection of EC controller based on the example of a MODBUS RTU compatible
42. t least to live up to our own expectations Motors with a built in saving effect The most significant advantage of fans and motors employing GreenTech EC technology as opposed to conventional asynchronous motors is that their efficiency level of up to 90 is substantially higher than the 70 80 achieved by AC motors This means not only better utilisation of primary energy but also reduced heat loss and hence a longer service life The benefits in terms of efficiency are even more apparent in part load operation as the integrated electronics of EC motors permit in finitely variable control In this way the speed can always be adapted to the particular requirements This feature offers added scope for potential savings in a variety of applications whilst creating a more pleasant atmosphere thanks to the greatly reduced noise levels for example Great energy savings of 30 on average Hardware and software from a single supplier Wide input voltage range for global use lt gt GreenTech EC the technology combining the best of all technological worlds In technical terms GreenTech EC technology can be referred to as soft commutation representing as it does a combination of commutation strategy and motor design The tangible result for cus tomers is low noise operation with no structure borne noise In other words we employ various designs of permanent magnet motor to obtain the best possible performance for
43. unt on considerable savings potential operation and far less power is consumed as a result A comparison is made between two condensers each equipped with four size 800 axial fans one condenser with conventional AC tech The graphs below illustrate the possible energy savings and noise nology and the other with innovative GreenTech EC technology The reduction in a direct comparison between on off operation and air performance of the fans is adapted so that optimum cooling infinitely variable speed control performance is always attained whatever the cooling requirements 100 dB A Ess Power consumption of AC fans on off operation Power consumption of EC fans continuous Savings from continuous speed adjustment 3 6 9 Benefit of contin speed adjustm f continuous adjustment um Sound pressure level of AC fans on off operation 21 Sound pressure level of EC fans continuous ____ Noise reduction from continuous speed adjustment A m _ q gt 25 50 75 100 qd gt 25 50 75 100 P Input power q Air flow L A Sound pressure level q Air flow Lower energy consumption The bars show the power consumption of Less noise generation Whereas switching off half the fans halving fans which are switched in gradually as required The air performance the air flow only reduces noise generation by approx
44. wer The other alter native is to use a laptop to access a PLC or a controller Host computer Remote desktop software Ethernet Approved controller RS485 MODBUS RTU Interface converter Art No 21488 1 0174 Art No 21489 1 0174 UL The following are some of the parameters available for remote energy utilisation optimisation load management preventive maintenance control commands fault rectification and re programming Operating hours Speed Current DC link Voltage DC link Power consumption can be calculated from current input and voltage Emergency operation function Temperature of motor Temperature of electronics Temperature of power section Mode of operation control of temperature pressure and air flow actuator controller set value actual value cooling heating Operation and alarm display alarm signal It is also possible to interrogate external sensors connected to the terminal strip of the fans Master 17 Communication via MODBUS RTU The ideal connection Thanks to its open and simple protocol MODBUS RTU has become established as a worldwide standard for the control of actuators and sensors We can offer a wide range of GreenTech EC fans and motors which support this interface as standard Numerous programmable logic controllers also feature a MODBUS RTU interface This provides an extremely uncomplicated way of im
45. y all that is required is a fixed IP address Power supply Fans Interface converter Ethernet Art No 21488 1 0174 Art No 21489 1 0174 EX Example of fan terminal assignment KL3 KL2 PE KL gt gt 2 2 2 s lt 8 3 AJAS 3 lt lt 2 lt a 2 Se SSS ee S RS which can easily be issued by means of the EC Control software The use of several Ethernet interface converters is no problem It is then possible to split up larger installations to shorten latency for example Note on large installations As of 31 fans an additional repeater is required to which a further 31 fans can be connected External sensor Pressure sensor temperature sensor lt SSSSS eg EJ Interface converter connection A RSA B RSB 31 ue Menu languages Housing Standard conformity Type of protection EMC Installation 32 EC controller Stand alone control unit for refrigeration and air conditioning applications in conjunction with the corresponding sensors ebm papst fans with the appropriate input can be actuated by way of the controlled 0 10 VDC output or the RS485 MODBUS RTU link The features include multi functional pressure and temperature regulation as well as i the display and input of various parameters The integrated LCD ensures ease of operation over
46. y at least 20 per cent by the year 2020 In an effort to achieve this climate goal minimum requirements were drawn up for energy consuming products In June 2010 binding limit values were intro duced for fans regardless of whether these are used as stand alone units or as component parts of a device or installation This affects many different sectors from refrigeration and air conditioning systems right through to machinery and IT applications New limit values highlight the limitations of conventional fans Starting in 2013 and with effect from 2015 two stage implementation of the ErP directive will enforce more stringent efficiency require ments for fans in the power range between 125 W and 500 kW The corresponding minimum efficiency values for the various types of fan are stipulated in the EU directive no 327 2011 The future belongs to GreenTech EC technology In the light of these developments the strengths of the innovative GreenTech EC technology created by ebm papst for electrically driven fans really come to the fore In contrast to fans employing AC tech nology GreenTech EC motors from ebm papst achieve efficiency levels in excess of 90 per cent thus permitting substantial energy savings as compared to conventional AC designs Added to this the speed of GreenTech EC fans can be regulated to adapt the air volume to the specific requirements This has the positive effect of considerably reducing energy consumption still furth
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