Bachmann 21-Pin DCC Decoder with Back EMF and 3 Function Outputs (36-554) Designed for use with the 21-pin connectors fitted to many of the most recent models
this three function decoder offers several advanced features including configurable back
EMF high-frequency pulse width motor speed control. A shunting speed function control is
provided, allowing finer control for slow speed operations.
Decoder measures 24mm long, 15mm wide with socket at one end.
The back EMF control used on this decoder will give superb results at slow speed when correctly set. 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 to 55 should be adjusted to alter the back EMF settings to suit the motor. In case of difficulty contact Bachmann Europe for more advice.
Motor output 700mA with 31.25KHz pulse frequency for smooth and quiet slow speed running.
Default function control settings
Supported CVs and default values/settings
CV
Definition
Min-Max
Default
1
Locomotive Address
1-127
3
2
Start Voltage
1-63
3
3
Acceleration
0-63
8
4
Deceleration
0-63
6
5
Max Voltage
0-63
63
7
Version
0
8
Manufacturer ID
ESU
151
17
Extended Address
128 -
0
18
Extended Address
9999
0
29
Decoder Configuration
Consult decoder data sheet
49
Back EMF Selector
Bit 0
1/enable
51
Lenz DC Brake Mode
Bit 0
1/enable
54
Feedback Parameter K
0-63
32
55
Feedback Parameter I
0-63
24
63
Lighting Function Brightness
0-7
7
Please note that this decoder does not support CV 19 advanced consisting, if you wish to use this function, eg. to operate pairs of class 20 locomotive, it is supported by Bachmanns' 36-552 decoder. Universal consisting using your DCC controller to operate two or more individual locomotives as set is supported.
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