Item 36-553
Bachmann Branchline
Please read this sheet before installing the decoder in your locomotive
5
6
7
8
Pin
1
2
3
4
Introduction
Thank you for your choice of the Bachmann EZ Command
36-553 decoder. This item is a high quality DCC decoder incorporating back EMF monitoring for fine control of the motor at low speed.
The decoder is supplied fitted with a harness and 8-pin
NEM/NMRA plug intended to be used in conjunction with a
compatible socket on a locomotive.
Features
► High frequency 31.25Khz pulse power for quiet operation
► User configurable Back EMF control
► 3 function outputs to control functions on the locomotive (eg lighting)
► Function button controlled reduced shunting speed
► Function button selectable inertia
► NMRA DCC with 14, 28, 128 speed steps
► short or long addresses
► Overload protection on outputs
► Accepts all programming methods
► Operable on DC controlled layouts
► Supports Lenz® brake sections
► Dimensions:
► Motor Output:
► Function outputs:
25.5 x 15.5 x 4.5 mm
700mA
180mA each – total 350mA
Important default values
Address 03, 28 speed steps
Important:
•The decoder is designed for use in model railways only
•Avoid mechanical force and impact on the decoder
•Do not expose to wet and humid conditions
•Do not remove the heat shrink sleeve around the decoder
•Never solder on the circuit board, extend cables if necessary
•Never wrap the decoder in insulation tape, since this may cause overheating
•Always remove the locomotive from the track when installing the decoder
•Make sure that no wires are squeezed or cut when reassembling the locomotive.
Aligning decoder
Plug the decoder into the socket aligning pin 1 (orange) to the mark on the loco PCB. The plug is arranged so that there will be no damage if plugged in reversed, although the loco will run backwards and the lights will not work.
Harness colour coding
Purpose motor right rear light function F1 left rail pickup
Wire colour orange yellow green black motor left front light function common positive right rail pickup grey white blue red
EZ COMMAND
3 Function Decoder with 8-wire harness and plug
Functions
F0
F1
F3
Locomotive directional lighting
180mA auxiliary output
Shunting speed reduction selection
F4 Inertia on/off
Prior to installation
The locomotive must be in perfect technical condition prior to installation. Only a locomotive with a trouble free mechanism and smooth running properties in analogue mode should be converted for digital mode. Inspect the model and clean and lubricate if necessary. All work should be carried out with the locomotive placed on a suitable base (not the track) without power. Make sure there can never be any electrical power applied to the loco during the conversion – even inadvertently.
Long addresses
Refer to the instructions with your DCC equipments regarding the procedure for entering long addresses
IMPORTANT – Back EMF motor control
The default CV values are suitable for many motors. However, there may be instability in motor performance when the back
EMF control is not matched to the requirements of the motor. If this is found to be the case CVs 54 and 55 should be adjusted to alter the back EMF to suit the motor.
For smaller, lighter motors use a lower value for CV54 and a higher value for CV 55.
In the event of difficulty please contact your retailer or
Bachmann Europe Plc for more advice.
Guarantee
This product is guaranteed for 12 months from the date of purchase against faulty materials or workmanship. During this period it will be repaired or have parts replaced free of charge provided that:-
1 the product is returned to Bachmann Europe plc with evidence of purchase date in accordance with the claims procedure outlined below;
2 this product has not been misused or handled carelessly or used on a voltage supply other than that stamped on the product; and
3 repairs have not been attempted other than by our service staff
Claims procedure:-
Any claim made under this guarantee should be made directly to the manufacturer. The claim itself should be made in a letter setting out the date and place of purchase, and giving a brief explanation of the problem which has led to the claim. This letter should then be sent, together with the product itself and proof of the purchase date (preferably a receipt) to the address below:
PLEASE NOTE that it is essential that the letter of claim reaches the above address on the last day of this Guarantee at the latest.
Late claims will not be considered.
This Guarantee applies to all goods purchased from an authorised retailer of Bachmann Europe plc within the United
Kingdom of Great Britain and Northern Ireland. This Guarantee does not confer any rights other than those expressly set out above and does not cover any claims for consequential loss or damage. This Guarantee is offered as an extra benefit and does not affect your statutory rights as a consumer
Item 36-553
CV Programming
The Configuration Variables - CVs - hold values within the processor of the decoder which control its performance characteristics. They can be changed as many times as required using an appropriate DCC command unit or standalone programmer. The table below shows the purpose of and the default value for each CV that is available on this decoder and the range of values each may hold. Some CVs can contain a
Table of CV Values
4
5
7
8
17
18
CV Description
1
2
3
Primary Address
Start voltage
Acceleration rate
Deceleration rate
Max voltage
Version number
Manufacturer ID
Extended address
ESU
(Select either CV 1 or CV 17/18 as address using CV29 bit 5 – add 32 to existing value in CV29) value from a range (eg start voltage) whilst others use the individual ‘bits’ of the CV to act as on/off switches for features (eg direction of operation). Inappropriate CV values may cause the decoder to operate incorrectly: if in doubt please take advice
from your retailer or Bachmann Europe plc.
Range
1-127
1-63
0-63
0-63
0-63
0
128 - 9999
Decimal value when set
Default
3
3
8
6
42
0
151
192
6
Effect when
Bit value 0
Effect when
Bit value 1
29 Decoder configuration data
Bit 0
Bit 1
Bit 2
Bits 3 and 4
Bit 5
Direction of operation
Speed steps
Operation on DC
Not used
Selection of short or long address
1
2
4
32
0
1
1
0
Normal
14
Disabled
Short
Uses CV1
Bits 6 and 7
49 Back EMF
Bit 0
Bits 1 to 7
51 DC Brake Control
Bit 0
Bits 1 to 7
54 Feedback Parameter
K
55 Feedback parameter
I
63 Function brightness
Not used
Back EMF Selector
Not used
Lenz DC brake mode
Not used
Determines the load control effect. Use a lower value for a small. light motor.
Determines the momentum of the motor.
Motors with large flywheels of large diameter require a smaller value.
Applies to both F0 and F1
0-63
0-63
0-7
1
1
1
1
32
24
7
Disabled
Disabled
Reversed
28/128
Enabled
Long
Uses
CV17/18
Enabled
Enabled
Decoder reset
The values can be reset to the defaults as above by writing value 08 to CV 8
Locomotive lights
Bachmann Europe plc
Moat Way, Barwell, Leicestershire, LE9 8EY
01455 841756 www.bachmann.co.uk v2 11/07
Your DCC equipment instructions will tell you how to turn the lights on and off – usually F0 (or F10 on EZ Command). If this does not turn them on check the alignment of the decoder and reverse if necessary
