Hornby R8249 DCC Loco Train Decoder 4 Function 8 Pin. Digital Chip.

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Seller: timetunnelmodels ✉️ (50,343) 100%, Location: Fenton Barns, Scotland, GB, Ships to: GB, Item: 360566383670 Hornby R8249 DCC Loco Train Decoder 4 Function 8 Pin. Digital Chip..
Diecast, Kits, Railway, Slot Racing and RC Specialists Over 25 years in the model trade Hornby R8249 DCC Decoder Chip POSTAGE IN THE UK IS A FLAT RATE PER ORDER REGARDLESS OF NUMBER PURCHASED.   The Hornby locomotive decoders may be used with all standard digital control equipment that conforms to the NMRA standards. HARD WIRING NOTE:  If your loco does not have an 8 pin socket, please purchase and fit one.  Removing the plug from any brand of decoder voids the warranty and invariably results in decoder failure as the heat generated during soldering is transferred to the delicate components on the decoder board.  8 pin sockets with leads attached can be purchased online for only a few pounds and avoid both these issues.  In line with all other brands, Hornby have stated that as of 1st September '19, any decoder returned with the cabling cut is ineligible for warranty replacement or refund. - Control of the motor’s rotational speed (load compensation) - Acceleration and deceleration separately adjustable - Selectable for operation with 14, 28, 128 speed steps - Programming on main track - Four On/Off function outputs.Two of the function outputs are dedicated for the head / tail lights. - Motor overload current protection - With NMRA RP-9.1.1 / NEW652 medium plug Technical Specification
Maximum current 1A  
Rated continuous current output  500mA  
Continuous motor output current 500mA  
Function output current 100mA each  
Address CV 1 CV 17-18 1-127 1-9999
Speed Steps (Selectable) 14, 28, 128  
Dimensions 17 x 10 x 3.5mm  
List of supported CVs
CV Name CV Default Description
Primary Address 1 3 Bits 0-6 contain an address with a value between 1 and 127. Bit seven must have a value of "0". If the value of Configuration Variable #1 is "00000000" then the decoder will go out of NMRA digital mode and convert to the alternate power source as defined by Configuration Variable #12.
Acceleration Rate 3 5 Determines the decoder's acceleration rate.The formula for the acceleration rate shall be equal to (the contents of CV#3*.896) /(number of speed steps in use).
Deceleration Rate 4 5 Determines a decoders braking rate.
Manufacturer Version No. 7 13 Manufacturer defined version info
Manufacturers ID 8 48 Values assigned by NMRA
EMF Feedback Cutout 10 128 Contains a value between 1 and 128 that indicates the speed step above which the back EMF motor control cuts off.
Extended Address 17-18   The Extended Address is the locomotives address when the decoder is set up for extended addressing (indicated by a value of "1" in bit location 5 of CV#29). CV#17 contains the most significant bits of the two byte address and must have a value between 11000000 and 11100111, inclusive, in order for this two byte address to be valid. CV 18 contains the least significant bits of the address and may contain any value.
Configuration Data #1 29   Decoder Configuration byte 1 Bit 0 = Locomotive Direction: "0" = normal, "1" = reversed.This bit controls the locomotive's forward and backward direction in digital mode only. Directional sensitive functions, such as headlights (FL and FR), will also be reversed so that they line up with the locomotive's new forward direction. Bit 1 = FL location: "0" = bit 4 in Speed and Direction instructions control FL, "1" = bit 4 in function group one instruction controls FL. Bit 2 = Power Source Conversion: "0" = NMRA Digital Only, "1" = Power Source Conversion Enabled. Bit 5 = "0" = one byte addressing, "1" = two byte addressing (also known as extended addressing).
All the CVs shown can be programmed in Operating Mode, Register CV Mode, Paged CV Mode and Direct CV Mode. All the CVs shown can be interrogated in all service modes. The Hornby Decoder supports programming on the Main. Some advice on the current draw of the decoder output: The current for all the decoder outputs is supplied by an internal rectifier with a maximum current of 1 Amp and the rated continuous current is 500mA.The sum of all currents to the motor and the function outputs should not exceed 500mA at normal continuous operation and cannot exceed 1 Amp. If the motor current exceeds 500mA the decoder will automatically cut off power to the motor. Function outputs are not protected. Each individual output can only draw up to it’s limit. For example if a motor requires as much as 400mA continuously then the function outputs combined should not exceed 100mA. Therefore, if the directional headlights require 50mA then the load Function 1 and Function 2 should not exceed 50mA.  
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Deliveries: We offer Economy and Express delivery options, and on smaller items postal delivery options. Economy Delivery is generally using a point to point courier - typically DPD Homecall, Royal Mail Eco Bulk or Hermes Parcelnet. These services take 3 to 5 working days (not including weekends) to deliver. On some products we offer a choice of 1st Class post - this typically takes 1 to 2 days but is not a time guaranteed service. On all products we offer the choice of Express Courier - this will be DPD, Fedex or, in limited areas, Royal Mail Express, and aims for delivery the day after dispatch. Orders have to be placed by 9am for us to guarantee dispatch that day by Express. Express to Northern Ireland, Scottish Highlands, Channel Islands and all off-shore locations takes 2 working days. All non-Express orders are dispatched in order of receipt. Combined Postage: Please use the ADD TO BASKET option to combine postage as we are unable to manually combine if you choose to make multiple payments. If you are buying more than one item, always use Add To Basket as clicking Buy It Now will result in eBay taking you straight to checkout without the option to add further items. Payment: We only accept Paypal for eBay orders. If you don't have Paypal, eBay will give you the option to pay by Credit or Debit card at checkout.
Waste Electrical and Electronic Equipment Regulations 2006: We are registered under the Valpac DTS WEEE scheme, member number 400017. Please dispose of your used electrical items at an authorised recycling centre - if you do not know where your local centre is, please contact the Recycle More scheme for further information.
International Orders: If an item does not offer you a postage choice to your country, we are unable to send it abroad. Some products are restricted (for example because they contain batteries) whereas others are prohibitively expensive to ship or subject to restrictions on sale. VAT: All prices include VAT at the current rate. We operate under a point of sale system and do not issue VAT receipts with every sale. If you need an itemised VAT receipt, please indicate on your payment. Returns: If your item is faulty (or appears to be) please contact us for advice, as most issues can be resolved without return or by exchanging components. In many cases, we find that items returned as faulty prove to be perfect and simply require adjustment or advice due to their complexity. We accept returns for change of mind - please notify us within 30 days of receiving your item and return it within 60 days of purchase - items must be unused and with all packaging intact. A free return service is provided only for faulty goods - in the event of non-faulty items being claimed as faulty in order to obtain a free return, a deduction as shown on our return label will be made from any refund. For all orders placed from 1st November, the 30 days starts 26th December rather than the date of delivery.
All Contents Copyright 1997 to 2023 Time Tunnel Models. Supplier text and images used with UK distributor's permission where appropriate.
  • Condition: New
  • Control System: Digital
  • MPN: HOR8249UK
  • Modified Item: No
  • Compatible Control System: DCC
  • Brand: Hornby
  • Type: 8 Pin Decoder

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