KTM BUI215 Скачать руководство пользователя

Страница: 1 / 74

supplementing
the ORIGINAL

OPERATING

INSTRUCTIONS

EPAC
ENGLISH

Содержание BUI215

Страница 1: ...supplementing the ORIGINAL OPERATING INSTRUCTIONS EPAC ENGLISH ...

Страница 2: ......

Страница 3: ...bly damaging situation Your bicycle or its surroundings may be damaged if the situation is not averted Make sure that your new EPAC Electrically Power Assisted Cycle was fully assembled adjusted and handed over to you by KTM with all necessary descriptions This Supplement to the Original Operating Instructions adds to the Original Operating Instructions and contains informa tion relating specifica...

Страница 4: ...ver 23 Sprocket 30 Seat post 37 Head light 3 Stem 10 Rim 17 Pedal 24 Derailleur hanger 31 Saddle 38 Tail light 4 On board computer 11 Tyre 18 Cotterless right crank 25 Back brake 32 Battery 39 Racks 5 Handlebars 12 Valve 19 Bottom bracket 26 Seat stay 33 Battery lock 40 Stand 6 Brake lever 13 Front brake 20 Chain 27 Speed sensor 34 Shocks 7 Head tube 14 Down tube 21 Chain stay 28 Seat post 35 Rock...

Страница 5: ...g to the drive system Under no circumstances may EPACs with fully integrated down tube batteries be operated without the battery cover closed Legal bases The mandatory conditions that must be adhered to are inferred from the following standards regulations DIN EN 15194 Bicycles electrically power assisted cycles EPAC bicycles Machinery Directive 2006 42 EC DIN EN ISO 4210 2 Cycles Safety requireme...

Страница 6: ...asures that are intended to increase performance or to exceed the speed limits of pedal assistance delivered by the individual drive system This is achieved by changing the parameters or using retrofit tuning kits Modifications of this kind are neither permitted nor recommended due to the strict legal conditions These laws are in place to prevent dangerous situations These modifications may also c...

Страница 7: ...st ride and Before every ride Make certain that the frame size and operating elements are adjusted to the size of your child An incorrect frame size may negatively affect the operability and controllability of the EPAC for instance the rider may be unable to operate the brakes properly Compared to a conventional EPAC the following aspects were limited on the child EPAC to make sure that the safety...

Страница 8: ...d to breakage or failure that can cause accidents or falls with injuries The use of third party or unsuitable drive components and batteries can cause the battery to overheat ignite or even explode This would void all warranty and guarantee claims relating to the drive system Contact your KTM dealer to select the right replacement components Bring your EPAC for its first inspection after 200 km Sc...

Страница 9: ... battery Transporting an EPAC battery may be legally classified as a transport of hazardous goods Familiarise yourself with the applicable regulations on hazardous goods before transporting the EPAC battery Any violation of these regulations is an administrative offence and can lead to fines Exclusively use suitable bike carriers roof or tail racks to transport your EPAC by car Not all bicycle bik...

Страница 10: ...ach use 4 Weight and load The more weight that the bicycle carries rider and luggage the shorter the range 5 Air pressure in the tyres The tyres offer significant potential Insufficient pressure causes higher rolling resistance and therefore requires an extremely high energy input The maximum permissible air pressure is printed directly on the sidewalls of the tyres Tyres with rough heavy tread re...

Страница 11: ...English Page 9 KTM Declaration of Conformity ...

Страница 12: ...U365 s 1 1 Drive unit 2 8 m m 5 17mm Perform BD Active Line Plus BDU350 Active Line BDU310 1 2 3 A 1 4 5 2 2 8 m m 5 17mm Performance Line BDU365 Active Line Plus BDU350 Active Line BDU310 1 2 3 A 1 1 4 5 2 2 8 m m Active Line BDU310 A Performance Line CX BDU450 CX ...

Страница 13: ...ng it with a car or aeroplane or storing it Unintentional ac tivation of the eBike system poses a risk of injury u The push assistance function must only be used when pushing the eBike There is a risk of injury if the wheels of the eBike are not in contact with the ground while using the push assistance u When the push assistance is activated the pedals may turn at the same time When the push assi...

Страница 14: ...r eBike Antrieb ar beitet im Notlaufprogramm Lösen Sie in diesem Fall die Schraube des Speichenmagne ten 3 und befestigen Sie den Speichenmagnet so an der Speiche dass er in der richtigen Entfernung an der Markie rung des Geschwindigkeitssensors vorbeiläuft Erscheint auch danach keine Geschwindigkeit in der Tachometeranzei ge wenden Sie sich bitte an einen autorisierten Fahrrad händler D3 19 03 20...

Страница 15: ... below 25 45 km h The following options are available for switching off the eBike system Press the on off button of the on board computer Switch off the eBike battery using its on off button bi cycle manufacturer specific solutions are possible when there is no access to the battery on off button see the bi cycle manufacturer operating instructions Remove the on board computer from its holder If t...

Страница 16: ...ere a ten planen Einflüsse auf die Reichweite Die Reichweite wird von vielen Faktoren zum Beispiel Unterstützungslevel Geschwindigkeit 0 275 007 XD4 18 03 2020 English 4 Assistance level Assistance factor A Performance Line BDU490P Performance Line CX BDU450 CX Cargo Line ECO 60 60 60 TOUR 140 140 140 SPORT eMTB 240 240 140 340 B 240 TURBO 340 340 400 A The assistance factor may vary in some model...

Страница 17: ...atible with the Bosch eBike system ask your bicycle dealer and are suitable for the specified voltage Bulbs must only be re placed with bulbs of the same voltage Do not immerse any components including the drive unit in water or clean them with pressurised water Have your eBike system checked by an expert at least once a year including mechanical parts up to dateness of system software Please have...

Страница 18: ...LK ALK K ALK ALK K K K K ALK ALK ALK ALK ALK K K ALK LK ALK K K K LK LK LK K K LK LK K LK LK LK 7 6 5 j i a b c d e h g f 8 9 1 2 3 4 1 207 020 XBP 11 03 2020 Bosch eBike Systems 3 WALK WALK WALK WALK W W W WA W WA A WAL A ALK LK ALK K ALK K LK W W W W W W W WA W W W W WA WA WA W W W W W W W W W W W W W W WA A WA WA W WA WA WA WA A W W W WA WA WA A WA WA WA WA WA WA WAL WAL WAL WA WA A A WAL WAL W...

Страница 19: ... troubleshooting and functional modifications may be introduced at any time Product features The numbering of the components shown refers to the illus trations on the graphics pages at the beginning of the manual Individual illustrations in these operating instructions may differ slightly from the actual conditions depending on the equipment of your eBike 1 On off button for on board computer 2 Pu...

Страница 20: ...ly of the on board computer The on board computer is supplied with voltage by two CR2016 button cells Changing the batteries see figure A If the on board computer shows LOW BAT on the display remove the on board computer from the handlebars by un screwing the fastening screw 3 of the on board computer Open the battery compartment cover 10 using a suitable coin remove the used batteries and insert ...

Страница 21: ... re quired assistance level appears on the indicator i To de crease the assistance level briefly press the button 5 If the display is set to TRIP TOTAL or RANGE the selected assistance level will only be superimposed briefly for ap prox one second on the display when switching over Switching bicycle lights on off For the model which has the bike lights powered by the eBike system a medium length p...

Страница 22: ...to press both buttons the trip distance TRIP will be set to 0 To reset the range of the battery RANGE select the battery range RANGE and simultaneously press and hold the but tons and The display will initially show RESET If you continue to press both buttons the trip distance TRIP will be set to 0 You can switch the displayed values from kilometres to miles by holding down the button and briefly ...

Страница 23: ...KM H RESET TURBO SPORT SPOR TOUR ECO OFF M PH KM H Reichweite AMM PMW H MIN MPH KM H TURBO SPORT TOUR ECO OFF MPH KM H Reichweite AMM PMWH MIN MPH KM H a b c d i h g f e 7 8 1 2 3 6 5 4 1 270 020 XBI 11 03 2020 Bosch eBike Systems 3 EC O M P H K M H Reichweite KM H RESET EC O M P H K M H Reichweite KM H A 13 12 9 11 3 15 14 10 4 ...

Страница 24: ...English Page 22 3 ECO M P H K M H Reichweite KM H RESET ECO M P H K M H Reichweite KM H A 1 13 3 1 12 2 9 9 1 11 1 3 3 1 15 5 1 14 4 1 10 0 4 4 Bosch eBike Systems 1 270 020 XBI 11 03 2020 ...

Страница 25: ...the corresponding holders are a schematic representa tion and may differ on your eBike 1 Display function button i 2 Bike light button 3 On board computer 4 Holder for on board computer 5 On off button for on board computer 6 RESET button 7 USB port 8 Protective cover for the USB port 9 Operating unit 10 Display function button i on the operating unit 11 Decrease assistance level scroll down butto...

Страница 26: ...ating instructions Remove the on board computer from its holder If no power is drawn from the eBike drive for about 10 minutes e g because the eBike is not moving and no button is pressed on the on board computer or the operating unit of the eBike the eBike system and therefore also the battery will switch off automatically to save energy eShift optional eShift is the integration of electronic gea...

Страница 27: ...0 CX and BDU480 CX A software update may be required TURBO Maximum assistance even at high pedalling speeds for sport cycling To increase the assistance level press the button 12 on the operating unit repeatedly until the required assistance level appears on indicator b To decrease the assistance level press the button 11 The requested motor output is displayed in the indicator a The maximum motor...

Страница 28: ...equired function is dis played To reset the Trip distance Trip time and Avg speed switch to one of these three functions and then press the RESET button 6 until the indicator is set to zero This will also reset the values of the other two functions To reset the Max speed switch to this function and then press the RESET button 6 until the indicator is set to zero To reset the Range switch to this f...

Страница 29: ...attery part number This menu item is displayed only when the on board computer is in the holder and the eBike battery provides a part num ber When using two batteries the software versions of both batteries are displayed successively Cha vx x x x Software version of the charger used to charge the eBike battery This is displayed only if the charger provides the software version If the eBike is equi...

Страница 30: ...English Page 28 2 1 2 3 4 5 17 6 Kiox on board computer ...

Страница 31: ...English Page 29 3 8 9 10 11 12 13 7 19 1 2 A 1 5 14 16 15 18 Bosch eBike Systems 1 270 020 XBK 17 03 2020 ...

Страница 32: ...iate vicinity cannot be excluded en tirely Do not use the on board computer with Bluetooth in the vicinity of medical devices petrol stations chem ical plants areas with a potentially explosive atmosphere or on blast sites Do not use the on board computer with Bluetooth in aeroplanes Avoid using the on board com puter near your body for extended periods u The Bluetooth word mark and logos are regi...

Страница 33: ...with the manufacturer s specifications Operation Before initial commissioning The Kiox is supplied with a partially charged battery Before using it for the first time this battery must be charged for at least one hour via the USB port see Power supply of the on board computer page English 3 or via the eBike sys tem The control unit should be attached such that the buttons are almost perpendicular ...

Страница 34: ...max 5 V charging voltage max 500 mA charging current If the on board computer is removed from the holder 5 all values for the functions are saved and can still be scrolled through If the Kiox battery is not recharged the date and time will be retained for up to 6 months When the on board computer is switched on again the date and time will be reset if a Bluetooth connection to the app has been est...

Страница 35: ...s of the eBike are not in contact with the ground while using the push assistance To activate the push assistance briefly press the WALK button on your on board computer After activation press the button within 3 s and keep it pressed The eBike drive is switched on Note The push assistance cannot be activated at assistance level OFF The push assistance is switched off as soon as one of the followi...

Страница 36: ...s please refer to the ABS operating instructions Lock premium function The Lock function is available to purchase from the Shop in the eBike Connect app Once the Lock function is switched on by disconnecting the on board computer the eBike drive unit assistance is deactivated It can only then be activated using the on board computer belonging to the eBike Detailed operating instructions can be fou...

Страница 37: ...peed 6 Distance range power and heart rate 7 Heart rate 8 Calories burnt and total distance 9 Status page Start page When you insert the on board computer into the holder while it is switched on it will display the start page 24 3 c d e f h i j a b g k a Time speed indicator b Assistance level indicator c Lighting indicator d Battery charge indicator of the eBike battery e Unit of speed indicatorA...

Страница 38: ... configure your eShift system here The bicycle manufacturer or dealer may base the service date on the distance travelled and or a period of time The due date for the service is displayed under Next Service DD Mon YYYY or at xxxxx km The bike component page displays the serial number and hardware and software versions for each component in addition to other key data which is relevant for the com p...

Страница 39: ...English Page 37 2 7 6 5 4 9 3 2 1 8 1 270 020 BN2 18 03 2020 Bosch eBike Systems Nyon on board computer ...

Страница 40: ...English Page 38 3 10 11 12 13 14 17 16 15 Bosch eBike Systems 1 270 020 BN2 18 03 2020 4 1 2 3 5 4 18 20 1 2 20 19 9 A B ...

Страница 41: ...sing the on board computer with Bluetooth and or WiFi interference can occur with other devices and equipment aircraft and medical devices e g pacemakers hearing aids Likewise injury to people and animals in the immediate vicinity cannot be excluded en tirely Do not use the on board computer with Bluetooth in the vicinity of medical devices petrol stations chem ical plants areas with a potentially...

Страница 42: ...ng unit 14 Previous page button 15 Increase assistance level button 16 Operating unit 17 Start assistance push assistance WALK button 18 Locking screw for on board computer 19 Drive unit contacts 20 Operating unit contacts A For mounting on the handlebars custom solutions are possible even without the use of the handlebar clamps Technical data On board computer Nyon Product code BUI350 Total inter...

Страница 43: ...oon you start pedalling again and the speed is below 25 45 km h The following options are available for switching off the eBike system Press and hold the on off button 3 on the on board computer for at least 3 seconds Switch off the eBike battery using its on off button bi cycle manufacturer specific solutions are possible when there is no access to the battery on off button see the bi cycle manuf...

Страница 44: ...f the on board computer If the protective film remains on the display this can impair the functionality performance of the on board computer u The full functionality of the on board computer cannot be guaranteed if the protective display film is used Nyon is supplied with a partially charged battery Before first use the Nyon battery must be fully charged via the USB port or the eBike system When y...

Страница 45: ...pressed The eBike drive is switched on Note The push assistance cannot be activated at assistance level OFF The push assistance is switched off as soon as one of the following occurs You release the button The wheels of the eBike are locked e g by applying the brakes or hitting an obstacle The speed exceeds 6 km h The push assistance function is subject to local regulations the way it works may th...

Страница 46: ...pp 3 The online portal at www eBike Connect com Many configurations and features can be managed and used on all components Some configurations and features can be accessed or operated only via certain components Data is synchronised automatically when a Bluetooth Internet con nection is available The following table provides an over view of the available features Functions of the on board computer...

Страница 47: ...o the time zone selected It is set automatically via GPS d Assistance level The colour of the screen changes depending on the assistance level e Connection to heart rate monitor Is also a placeholder for further events The indicator is shown when the event occurs e g connection to smartphone f Lighting The symbol is displayed if the lighting is switched on g eBike battery charge h Range informatio...

Страница 48: ...e the service date on the distance travelled and or on a period of time The bike component page displays the serial number and hard ware and software versions for each component in addi tion to other key data which is relevant for the compon ents Screen Management This menu item can be used to adapt the screen and tile contents to suit your personal requirements Connections This is where you can s...

Страница 49: ...ithin 100 km n4 Button Home Selecting this button guides you to your home ad dress A n5 Button Work Selecting this button guides you to your work ad dress A n6 Button Locations Selecting this button means you can find your saved locations that have been synchronised by the app or the portal n7 Button Routes This displays the routes that have been saved in the portal followed by the synchronised ro...

Страница 50: ...llowing figure shows an example active navigation with explanations of the symbols depicted n12 n11 n13 n14 n15 n16 n19 n18 n17 n11 Distance to destination n12 Time of arrival n13 Destination n14 Current position n15 Battery range indicator n16 End active navigation n17 Open and close panel back to search n18 Switch between 2D and 3D view n19 Centre view back to current position Trip Data Screen i...

Страница 51: ...e available Move screens Create new screens Delete screens Add preset screens Fitness Screen preset screen u t r v t My Power Your power indicator u Cadence Cadence indicator r Heart Rate Heart rate indicator v Calories Calories burned indicator eMTB Screen preset screen r o w x y r Slope Ascent indicator o Altitude Altitude above sea level indicator w Altitude Graph Altitude graph indicator x Max...

Страница 52: ...lows you to reset all data on the journey so far to zero Select Destination This submenu allows you to save your current position or be navigated home Map Zoom This submenu allows you to increase or decrease the size of the map section Brightness This submenu allows you to select from the following brightness levels 25 50 75 100 Auto Design This submenu allows you to select a light or dark back gr...

Страница 53: ... 5 6 7 24KM H 5 74 KM 35 d a b c e j h f g i 1 270 020 XBC 22 04 2020 Bosch eBike Systems 3 8 9 10 11 14 13 15 12 1 17 19 18 16 5 A Bosch eBike Systems 1 270 020 XBC 22 04 2020 4 3 2 4 18 19 18 B 1 270 020 XBC 22 04 2020 Bosch eBike Systems ...

Страница 54: ...e diverted from sur rounding traffic when using COBI Bike products Al ways observe the applicable legal provisions in your country for the permitted use of your bicycle in road traffic In particular note that it is prohibited to pick up or hold your smartphone in your hand in road traffic u Consult a doctor before using fitness app programs Fitness apps may cause people to overexert themselves phy...

Страница 55: ...normal operation or as soon as you have reached a speed of 25 km h the eBike drive switches off the assistance The drive is automatically reactivated as soon you start pedalling again and the speed is below 25 km h The following options are available for switching off the eBike system Press the on off button 2 of the on board computer Switch off the eBike battery using its on off button bi cycle m...

Страница 56: ...en pushing the eBike There is a risk of injury if the wheels of the eBike are not in contact with the ground while using the push assistance To activate the push assistance briefly press the WALK button on your operating unit Once it is activated press and hold the button within three seconds The eBike drive is now switched on Note The push assistance cannot be activated at assistance level OFF Th...

Страница 57: ...efault setting is km h g Indicator for second battery If the eBike is equipped with 2 batteries the 2 batter ies are shown here in succession h Battery charge indicator Each segment corresponds to approx 20 of the battery capacity The battery is empty or not inserted i State of charge of the battery in per cent j Range of the eBike battery Depending on the state of charge of the battery the maximu...

Страница 58: ...of the recovery opera tion is indicated by a tick CHECK APP Your operating system is non func tional for the following reasons 1 One or more incompatible com ponents have been detected In this case the components require a software update that can only be implemented by a Bosch eBike dealer Following this notification the eBike system switches off 2 An out of date version of the soft ware has been...

Страница 59: ...apply to BUI350 Charge the on board computer in the holder or via the USB port 431 Software version error Restart the system If the problem persists contact your Bosch eBike dealer 440 Internal drive unit fault Restart the system If the problem persists contact your Bosch eBike dealer 450 Internal software error Restart the system If the problem persists contact your Bosch eBike dealer 460 Error a...

Страница 60: ...w the battery to either cool down or heat up to the permissible temperature range Restart the system If the problem persists contact your Bosch eBike dealer 606 External battery fault Check the wiring Restart the system If the problem persists con tact your Bosch eBike dealer 610 Battery voltage error Restart the system If the problem persists contact your Bosch eBike dealer 620 Charger fault Repl...

Страница 61: ... cleaning Do not immerse any components including the drive unit in water or clean them with pressurised water Clean your on board computer using a soft cloth dampened only with water Do not use any detergents Have your eBike system checked by an expert at least once a year including mechanical parts up to dateness of system software The bicycle manufacturer or dealer can also store a distance tra...

Страница 62: ...osch eBike Systems 4 7 B A 8 8 9 9 5 5 1 1 6 6 5 5 7 7 2 2 6 6 1 10 0 1 10 0 0 275 007 XPX 01 04 2020 Bosch eBike Systems 3 1 16 6 1 14 4 1 12 2 1 13 3 1 11 1 4 4 3 3 1 14 4 6 6 5 5 4 4 1 15 5 Bosch eBike Systems 0 275 007 XPX 01 04 2020 5 1 2 1 2 4 3 5 5 1 14 4 6 6 1 15 5 6 6 5 5 1 14 4 1 15 5 1 15 5 C D Bosch eBike Systems 0 275 007 XPX 01 04 2020 ...

Страница 63: ...e is a risk of the battery being damaged u The battery may give off fumes if it becomes damaged or is used incorrectly Ensure the area is well ventil ated and seek medical attention should you experi ence any adverse effects The fumes may irritate the respiratory system u Only charge the battery using original Bosch chargers When using chargers that are not made by Bosch the risk of fire cannot be...

Страница 64: ...sh proof IP 54 dust and splash proof IP 54 dust and splash proof A Standard battery B Cannot be used in combination with other batteries in systems with two batteries C Rack mounted battery Li ion battery PowerTube 400 PowerTube 500 PowerTube 625 Product code BBP282 horizontal A BBP283 vertical A BBP280 horizontal BBP281 vertical BBP291 horizontal BBP290 vertical Rated voltage V 36 36 36 Nominal c...

Страница 65: ... two batteries with only one battery cover the contacts of the unused socket using the cover 10 provided Otherwise there is a risk that the exposed contacts will cause a short circuit see figures A and B Charging process for two batteries If two batteries are fitted to an eBike both batteries can be charged using the uncovered connection To begin with both batteries are charged one after the other...

Страница 66: ...s than 5 none of the LEDs on the battery charge indicator 3 will light up Whether the eBike system is switched on is only visible on the on board computer To switch off the battery press the on off button 4 again The LEDs on the indicator 3 will go out This will also switch the eBike system off If no power is drawn from the eBike drive for about 10 minutes e g because the eBike is not moving and n...

Страница 67: ...e subject to legislation on the transport of dangerous goods Private users can transport undamaged batteries by road without having to comply with additional requirements When batteries are transported by commercial users or third parties e g air transport or forwarding agency special re quirements on packaging and labelling e g ADR regula tions must be met When preparing items for shipping a dang...

Страница 68: ...BCS250 eBike Battery Charger 36 4 230 0 275 007 907 Li Ion Use ONLY with BOSCH Li Ion batteries Input 230V 50Hz 1 5A Output 36V 4A Made in PRC Robert Bosch GmbH 72757 Reutlingen Germany Standard Charger BCS220 Robert Bosch GmbH 72757 Reutlingen Germany Standard Charger Fast Charger 2 3 1 5 4 0 275 007 XCX 13 03 2020 Bosch eBike Systems 3 BCS230 Compact Charger 2 2 5 5 1 1 3 3 4 4 ...

Страница 69: ... 0 2 2 2 2 3 3 1 11 1 8 8 6 6 6 6 5 5 A B 0 275 007 XCX 13 03 2020 Bosch eBike Systems 5 8 8 5 5 6 6 7 7 7 7 5 5 6 6 1 11 1 C Bosch eBike Systems 0 275 007 XCX 13 03 2020 6 5 5 6 6 D 0 275 007 XCX 13 03 2020 Bosch eBike Systems ...

Страница 70: ...eBike battery must not be left unattended while charging u Supervise children during use cleaning and mainten ance This will ensure that children do not play with the charger u Children or persons who owing to their physical sensory or mental limitations or to their lack of experi ence or knowledge are not capable of safely operat ing the charger may only use this charger under super vision or aft...

Страница 71: ...arging socket 7 Avoid getting dirt e g sand or soil in the char ging socket and contacts in particular Lift the cover of the charging socket 7 and plug the charging connector 5 into the charging socket 6 u There is a risk of fire due to the charger heating up during charging Ensure the battery on the bike is completely dry and placed on a fireproof surface be fore charging If this is not possible ...

Страница 72: ...reconnect the battery to the charger until it has reached the correct charging temperature The charger is not charging No LEDs flashing one or more LEDs will remain perman ently lit depending on the state of charge of the eBike bat tery Contact an authorised bike dealership Charging not possible no indicator on battery Connector not attached properly Check all connections Battery contacts dirty Ca...

Страница 73: ...KTMBIKESOFFICIAL KTMBIKEINDUSTRIES webleedoRANGE ...

Страница 74: ...uli 2020 Specifications are subject to change without notice For errors technical mistakes and misprints no liability is assumed Version July 2020 ART NO 00012021012 KTM FAHRRAD GMBH Harlochnerstraße 13 5230 Mattighofen Austria KTM FAHRRAD DEUTSCHLAND GMBH Adolf Kolping Straße 34 D 84359 Simbach am Inn Germany ...

Результаты поиска

Содержание BUI215

Отзывы:

Похожие инструкции для BUI215

Бренды по названию

Популярные бренды

KTM BUI215, Руководство по эксплуатации

Результаты поиска

Содержание BUI215

Отзывы:

Похожие инструкции для BUI215

Бренды по названию

Популярные бренды