13
Functions
●
For optional operation with a conventional
DC power pack, Trix Selectrix, or Digital systems
conforming with the NMRA standards (DCC).
●
The mode of operation is automatically recognized.
●
Particularly smooth control of running charac-
teristics.
●
Particularly quite motor operation.
●
Different control variables for optimal adaptation
to the motor.
●
127 speed levels internally.
●
Block operation with simple diodes in Selectrix
operation.
●
Short circuit protection for the motor outputs.
●
Overload protection for lights and auxiliary function.
●
Electronic interchangeability of the connections.
●
NEM 650 connector.
●
4-Pole SUSI connector for hooking up to
3 expansion modules in DCC operation.
Technical Specifications
●
Dimensions (L x B, without connections)
24.2 x 15.4 mm / 19/20” x 3/5”
●
Max. load at the motor outputs
≤
2.0 amp
●
Max. load at the light outputs
≤
300 milliamps
●
Max. load for auxiliary function
≤
50 milliamps
●
Max. total load
≤
1.0 amp
●
Function output, lights
≤
300 milliamps
●
Function output, horn
≤
50 milliamps
●
Total load, including
SUSI connector
≤
2.0 amp
Care and Maintenance
The 66837 decoder does not require any special
care and maintenance. Controlling the motor with
pulse width electronics will however create a higher
load for the windings and the brushes for the motor
than with normal DC power operation. For this reason
regular care and maintenance of the motor is a must.
After no more than 50 hours of operation, the entire
locomotive frame including the decoder should be
cleaned. A thorough cleaning should also be done
before the usual lubrication work.
