Lenz Elektronik Digital Plus User manual

Silver Direct Locomotive decoder 1
The DIGITAL plus SILVER locomotive decoder has a built in NMRA 8 pin plug and is suitable for
all DC locomotives with continuous current draw of 1.0 Amp. or less. That have a DCC Medium
plug socket. The characteristics of the decoder are:
∗Super smooth and silent high frequency back-emf motor control.
∗Asymmetrical DCC support including directional stopping.
∗Adjustable precision stopping control.
∗Low speed gear for switching operations.
∗Selectable for operation with 14/27, or 28/128 speed steps.
∗Operation on conventional DC layouts is possible or can be disabled.
∗Motor output = 1A continuous, 1.8A max, > 5 A stall.
∗Motor and function outputs protected.
∗Four function outputs rated at 100mA each with advanced function mapping.
∗Directional or independent lighting with dimming and special effects.
∗Support for Advanced Consist Control and Extended Addressing.
∗Support for programming on the mainline (operations mode programming).
∗Support for all form of programming as described in NMRA RP-9.2.3
∗Supports service mode decoder lock.
∗Size: L 0.71" x W 0.50"x H 0.14" L 18mm x W 12.9 mm x H 3.6mm
Silver Direct Silent
Back EMF DCC Decoder
Art. No. 10330
February 2007
Core software based on
NMRA Conforming
Silver MP Decoder

Silver Direct Locomotive decoder 2
2
SILVER Decoder feature set
The following contains a short introduction of the features of the SILVER decoder as
well as information on how to use them.
For more detailed information please refer to the "SILVER decoder" information which
can be downloaded from the Lenz Elektronik GmbH website: www.lenz.com.
Capacity and protection equipment
The motor output has a current-carrying capacity of up to 1A without any concern for
cooling! The short-term maximum current-carrying capacity is 1.8A. The decoder is
protected against overloading, short circuits and overheating. In case of a fault, a bit is
set in CV30 which will state the type of fault which has occurred. This bit can be
cleared via setting this CV to 0. Because of this protection the Silver decoder can work
with motors that have very high stall currents.
Maximum continuous current-
carrying capacity of total decoder
1.1 Amps
Motor output -
Continuous / peak motor / locked
rotor stall
1.0 Amps / 1.8 Amps / > 5 Amps
Function output A, B, C and D 100 mA each
Total current-carrying capacity of
function outputs
400 mA
High Frequency Back EMF Motor control
Silver decoders have a very smooth and quiet high-frequency motor control (23kHz). If
necessary, the performance of the decoder can be optimized to one of 6 specific motor
types in the locomotive using CV50. These motor types include parameter sets which
have been specially adapted to the respective models. In addition, it is possible to
perform additional fine-tuning via CV113 or CV114 when selecting motor types 4 or 5.
If desired you can switch off both the high-frequency drive as well as the control
system itself. You can still use CV9 to adjust the repetition rate.
The minimum (CV2), maximum (CV5) and mid (CV6) speeds can be set; the decoder
automatically adapts these desired speed parameters dynamically to ensure a steady,
smooth curve. It is also possible to program a user defined unique speed curve.
The decoder also has what we refer to as an EMF switch which makes it possible to
further adjust the decoder to different motor types. Depending on the motor type used,
it is possible that a digitally controlled locomotive cannot reach an adequate maximum
speed compared to a locomotive in conventional operation. If this is the case, activate
your EMF switch by setting Bit 6 in CV 50. The locomotive will then reach a higher
maximum speed while the minimum speed is also slightly increased.
Special Features

Silver Direct Locomotive decoder 3
Function for disabling of acceleration and deceleration delay
Use function F4 (function assignment can be altered in CV59) to disable the
acceleration and braking delay as well as the constant braking distance during
operation. The delays are disabled as long as the function is active.
Switching speed function
The switching speed halves the speed table. This facilitates particularly sensitive
control during the switching process. Use function 3 (function setting, can be altered in
CV58) to enable and disable the switching speed. If the shunting speed is enabled, the
constant braking distance is disabled. The switching speed is enabled as long as the
function is active
Constant braking distance
During the transition from an active speed step to speed step 0 (e.g. moving the speed
control knob to the left limit-stop), the locomotive/train will travel a settable, pre-defined
braking distance. This braking distance does not depend on the speed of the
locomotive/train.
Enable the constant braking distance function (this requires setting Bit 0(1) in CV51. If
this bit is not set, the decoder will use the normal speed-dependent braking delay).
The braking distance is defined by the value set in CV52. Since the motors and gear
ratios of locomotives vary, the braking distance differs from locomotive to locomotive
even if the same value is set in CV52.
Use a short test section to measure how long your locomotive’s braking distance will
be with a given value set in CV52. Start with the default value (100) in CV52.
Accelerate your locomotive until it has reached average speed.
At a chosen point in time, set the speed to 0. This requires moving the speed control to
the stop position, if you are using the LH100, keep pressing the < key until the speed is
set to 0 or until the locomotive address is displayed (if using the LH100, do not press
key ! This result in a locomotive-specific emergency stop and the delays in the
locomotive decoder will not be enabled!).
Measure the covered braking distance.
Increase or decrease the value in CV52, e.g. in steps of 10, and carry out another
measurement. You will thus create a table which will indicate the braking distances in
relation to the values set in CV52.
Important advice: The constant braking distance is only effective if the speed is
changed to 0. If the speed is decreased from e.g. 28 to 10, the speed-dependent delay
from CV4 becomes effective.
The constant braking distance is disabled while the switching speed function is
switched on (default setting F3), or if the function to disable acceleration/deceleration
is activated (default setting F4). Either of these two features can also be used if you
wish to interrupt a constant braking process prematurely.

Silver Direct Locomotive decoder 4
4
The constant braking distance does not function in analogue DC mode.
Mapping function outputs
Using function mapping (CVs 33-46) you can define which functions of the digital
system are used to control the A, B, C and D function outputs. The outputs A, B and C
can be allocated to function F0 (direction-dependent) or functions F1 to F8 as desired.
Output D can be allocated to function F0 (direction-dependent) or functions F1 to F12
as desired.
Lighting effect at function outputs
Special lighting effects can be assigned to each of the function outputs. The lighting
effects for the function outputs A and B are set in CV60 and for the function outputs C
and D in CV62. If you wish to switch the effects with a function of the digital system,
you can make the allocations to functions F1 to F8 in CV61 (for function outputs A and
B) and CV64 (for function outputs C and D). The effects available are shown in the CV
table defined later in this manual.
Asymmetrical DCC = Automatic Braking Control
simple signal stop and slow approach
You can carry out a particularly simple stop at a signal using the ABC braking module.
Depending on the signal position, this module creates an asymmetric track voltage in
the braking section in front of the signal. The decoder reacts to this. Combined with the
constant braking distance, precise on-the-spot stopping in front of red signals is not a
problem. Of course, passage in the opposite direction is also possible. The signal
indication "slow approach/caution" can be set using CV53.
You can operate all functions during the signal stop or slow approach – you can even
reverse away again from the red signal! These special ABC modules can be used to
assemble a very simple block section.
Activate the ABC control by setting Bit 2 (1) in CV51.
Push-pull train control
A push-pull train control can be set if the ABC braking module is used. There are two
different options: push-pull operation with and without intermediate stops. The latter
also takes slow-approach sections into account.
The push-pull train control is activated in CV51, Bit 4 (3) and Bit 5 (4). The stopping
time at the end of the track is set in CV54 (1 to 255 sec).
Preparing to Install the SILVER decoder
A locomotive that runs well under DC will run exceptionally well under DCC. Replace
worn out motor brushes and burned out light bulbs. Clean any dirt or oxidation from the
wheels and pickups, and make sure that electrical contact is good. Now is also a good
time to lubricate your locomotive.

Silver Direct Locomotive decoder 5
Some advice on installing the decoder:
Although the SILVER decoder has many internal safeguards to prevent damage, you
must not allow any metal part of the locomotive to touch the surface components of the
decoder. This could cause a direct internal short circuit and the decoder will be
destroyed. The motor brushes MUST also be completely isolated from the rail
pickup. Achieving isolation may require some different approaches on different
locomotives, perhaps unsoldering wires or placing a thin piece of insulating plastic
between the motor and the locomotive frame. If you have a VOM, check for infinite
resistance between the motor and all the wheels. Take special note that a short might
occur when the loco body is reinstalled.
DO NOT WRAP decoder with electrical tape or shrink wrap!
Doing so will impede air circulation and degrade the performance of the decoder.
Instead, put electrician tape over any part of the locomotive frame or body that might
touch the decoder and use double sided foam mounting tape to mount the decoder.
This will prevent short circuits without 'suffocating' the decoder.
The SILVER decoder can not be set up for simultaneous use for 2-rail pickup and
overhead cantenary or trolley operation. If the locomotive is turned the wrong way, the
decoder could get twice the track voltage, which would destroy it!
Wiring Options
The Silver Direct is designed for locomotives that have an NMRA 8 pin socket. To
install simply remove the dummy plug from the locomotive and plug in the decoder.
Step by Step Installation
To install the decoder simply remove the dummy plug in your locomotive and install the
decoder plug. To ensure the headlights work correctly you must align the plug properly.
Pin 1 of the plug connects to the orange wire. Ensure this is aligned to Pin 1 of the
locomotive. If the plug is installed wrong way round the lights will not work. When
installing the plug ensure that the pins are not bent or broken.
1
Function output D
Function positive common +
View from bottom of decoder
Pin Meaning
1 Motor connection 1
2 Function output B
(rear headlight)

Silver Direct Locomotive decoder 6
6
3 Function output C
4 Left rail pickup
5 Motor connection 2
6 Function output A
(front headlight)
7 Function positive common
8 Right rail pickup
There are two wiring options for installing the function D to the solder pads on the
underside of the decoder depending on how the locomotive is constructed. The
function could be connected to the decoder’s floating positive +common ( Pin 7) or
connected to one rail as a common. A mixture of both options is possible in the same
locomotive.
1
Function D with
rail Comm on
F
1
Function D with Decoder + Common
F
If the bulbs are floating (isolated against wheel pick up and chassis) and connected
according to above figure, they will shine brighter compared to using the rail as a
common.
After installation of the decoder, place the locomotive (without its shell) on the
programming track and read back the locomotive's address from the decoder. If the
decoder is properly installed, you will be able to read back the factory pre-set
address 03. Remove the locomotive from the track, and if necessary correct any
wiring errors.
Configuring the Silver Decoder
The locomotive address, acceleration and deceleration delay, and all other features of
the locomotive decoder can be changed as often as desired by configuring special
features within the decoder. The features are "stored" permanently in special locations
even when the operational voltage is switched off. These locations are called
"configuration variables" or simply "CV". The values are configured electronically,
which means that it is not necessary to open the locomotive again after the decoder
has been installed.

Silver Direct Locomotive decoder 7
You can alter the content of CVs both through "Programming in operational mode
(PoM)" (except for CV1, CV17 and CV18) or "Programming on the programming
track".
For detailed instructions on how to program using the above-mentioned devices,
please refer to the operating manuals which accompany those devices.
The decoder is programmed from the factory for operation with address 3 and 28
speed steps. The decoder can be used with these basic configurations immediately
after purchase. All configurations can, of course, be changed.
Resetting the decoder
If you wish to reset all the decoder CVs to its factory setting, enter value 33 in CV8.
The CVs of a connected S.U.S.I. module are not reset!
Please note: Some CVs (such as CV29) have specific meanings for each bit. The bit
assignments in this table use a bit numbering scheme of 0-7 to correspond the NMRA
convention for universal bit numbering. Many handhelds (such as the DIGITAL plus
LH100 handheld) use a scheme of 1-8 to refer to the individual bits rather than 0-7. (Bit
0 in this table is displayed as a"1" on LH100 handheld, Bit 1 is identified as "2".) The
bit numbers in () within these tables contain the LH100 bit numbers.
**Note: in the range field the numbers in the [ ] are decimal.

Silver Direct Locomotive decoder 8
8
Table of supported CVs
CV Meaning Range Factory
setting
1 Basic locomotive address. This number is the short address
used to control the locomotive. When writing this CV, CV19
(consist address) is automatically cleared and CV29 Bit 6
(use of extended address) is deleted is set to 0.
1-127 3
2 Minimum starting voltage 0-255 0
3 Starting delay 0-255 6
4 Braking delay 0-255 5
5 Maximum speed 0-255 255
6 Mid speed Vmid (a value of 60 will give a linear curve) 0-255 48
7 Version number - 78
8 Manufacturer’s ID - 99
9 Back EMF Repetition Rate 0-63 15
17 Extended locomotive address, high-order byte 192-231 192
18 Extended locomotive address, low-order byte 0-255 100
19 Consist address 1-99 0
29 Decoder Configuration, Byte 1: 6 (dec)
bit 0
(1)
Locomotive direction of travel:
0 = locomotive’s direction is normal
1 = locomotive’s direction is reversed
0,1
[1]
0
bit 1
(2)
Headlight mode:
0 = Operation with 14 or 27 speed step systems..
1 = Operation with 28, 55 or 128 speed steps.
Note: your system must be set to the same mode.
0,1
[2]
1
bit 2
(3)
Usage on conventional DC layouts:
0 = locomotive operates in digital mode only
1 = locomotive can operate on either conventional DC
and on DCC
0,1
[4]
1
bit 3
(4)
Not Used 0 0
bit 4
(5)
Speed Curve Selection:
0 = factory pre-set speed curve is used
1 = user defined speed curve is used. Please enter the
appropriate values into CV 67 to 94 before setting this
bit.
0,1
[16]
0
bit 5
(6)
Extended Addressing
0= Normal addressing
1= Four digit extended addressing
0-1
[32]
0
bit 6 bit 7 always 0 0 0

Silver Direct Locomotive decoder 9
CV Meaning Range Factory
setting
30 Fault indication 0 (dec)
bit 0 (1) = 1 Light short-circuit 0,1 [1] 0
bit 1 (2) = 1 Overheating 0,1 [2] 0
bit 2 (3) = 1 Motor short-circuit 0,1 [4] 0
CV
33
–
46
Function mapping for function outputs:
In order to allocate a function of the digital system to a function
output, look for the section where the row of the desired function
meets the column of the desired function output. Enter the number
found in the respective CV. For the purpose of clarification, factory
settings are shown in bold print.
Factory
setting
CV Function
output:
A B C D
33 F0 forward 8 16 32 64 8
34 F0 backward 8 16 32 64 16
35 Function 1 8 16 32 64 32
36 Function 2 8 16 32 64 64
37 Function 3 8 16 32 64 128 (*)
38 Function 4 1 2 4 8 32 (*)
39 Function 5 1 2 4 8 64 (*)
40 Function 6 1 2 4 8 128 (*)
41 Function 7 1 2 4 8 0
42 Function 8 1 2 4 8 0
43 Function 9 1 0
44 Function 10 1 0
45 Function 11 1 0
46 Function 12
This range does not allow
mapping of functions
1 0
(*)-These values are not significant for SILVER 10432 and 10433.
50 Motor configuration 0 (dec)
bits 0-3
(1-4) Select motor type 0-5, enter as decimal number 0,1 [0-5]
0
Bit 5 (6) =0 EMF switch inactive
=1 EMF switch active
0,1
[32]
0
Bit 6 (7) =0 Control switched on
=1 Control switched off
0,1
[64]
0
Bit 7 (8) =0 High-frequency motor control (approx. 23 kHz)
=1 Low-frequency motor control (approx. 19 Hz)
0,1
[128]
0
51 Braking configuration 0 (dec)
bit 0 (1) = 1 Constant braking distance activated 0,1 [1] 0
bit 1 (2)) = 1 ABC activated 0,1 [2] 0
bit 2 (3) = 1 ABC direction-dependency deactivated 0,1 [4] 0
bit 3 (4) = 1 Activate push-pull operation without
intermediate stop
0,1 [8] 0
bit 4 (5) = 1 Activate push-pull operation with intermediate
stop
0,1 [16] 0

Silver Direct Locomotive decoder 10
10
bit 5 (6) = 1 Stopping with DC independent of the polarity
(only if Bit 3 is deleted in CV29).
0,1 [32]
bits 6-7 (7-8) Not used 0
CV Meaning Range Factory
setting
52 Braking distance with activated constant braking
distance
0-255 50
53 Slow approach with ABC 0-255 48
54 Stopping time in push-pull operation, 1 to 256 sec 0-255 4
55 Sets brightness at function outputs A and C, 255=max 0-255 255
56 Sets brightness at function outputs B and D, 255=max 0-255 255
57
-
59
Function mapping:
Each bit of the CV stands for a function of the digital
system: Bit 0(1) for function 1, Bit 1(2) for function 2
and so on up to Bit 7(8) for function 8. If you wish to
allocate a function for dimming, the respective bit in
CV 57 must be set.
57 Dimming function (no factory setting) 0-255 0
58 Switching speed function (factory setting F3) 0-255 4
59 acceleration and deceleration delay function (factory
setting F4)
0-255 8
60 Lighting effect at function outputs A and B. The units
digit of the value stands for function output A, the tens
digit for function output B:
0 No effect
1 Marslight
2 Gyrolight
3 Strobe
4 Double strobe
0-255 0
61 Function mapping: lighting effect at function outputs A
and B
0-255 0
62 Lighting effect at function outputs C and D. 0-255 0
The tens digit of the value stands
for function output D:
0 No effect
1 Flashing at same time as
function output C
2 Flashing alternately to function
output C
3 Flickering type 2 (less smooth)
4 Flickering type 3 (excitedly)
5 Dimming with value from CV56
The units digit of the value stands for
function output C:
0 No effect
1 Flashing
2 Flickering type 1 (smooth)
3 Dimming with value from CV55
63 Flashing frequency for function outputs C and D:
default approx. 1 sec, f = 1 / ( 0.03 * (1 + CV63))
32
64 Function mapping: lighting effect at function outputs C and
D
0
67..
94
Values for user defined speed table, default = factory
speed curve
0-255
105 User Identification #1 0-255 255

Silver Direct Locomotive decoder 11
106 User Identification #2 0-255 255
113 Minimum PWM value, control for motor types 4 or 5 0-255 40
114 Change duty cycle for motor type 4 or 5 0-255 10
128 Decoder Software Version – read only 3

Silver Direct Locomotive decoder 12
12

Silver Direct Locomotive decoder 13
North American Warranty
Lenz GmbH does everything it can do to ensure that its products are free from defects and will
operate for the life of your model railroad equipment. From time to time even the best engineered
products fail either due to a faulty part or from accidental mistakes in installation. To protect your
investment in Digital plus products, Lenz GmbH offers a very aggressive 10 year Limited
Warranty.
This warranty is not valid if the user has altered, intentionally misused the Digital Plus product, or
removed the product's protection, for example the heat shrink from decoders and other devices.
In this case a service charge will be applied for all repairs or replacements. Should the user
desire to alter a Digital Plus Product, they should contact Lenz GmbH for prior authorization.
Year One: A full repair or replacement will be provided to the original purchaser for any item that
that has failed due to manufacturer defects or failures caused by accidental user installation
problems. Should the item no longer be produced and the item is not repairable, a similar item
will be substituted at the manufacturer’s discretion. The user must pay for shipping to an
authorized Lenz GmbH warranty center.
Year 2 and 3: A full replacement for any item will be provided that has failed due to manufacturer
defects. If the failure was caused by accidental user installation or use, a minimal service charge
may be imposed. Should the item no longer be produced and the item is not repairable, a similar
item will be substituted at the manufacturer’s discretion. The user must pay shipping to and from
the authorized Lenz GmbH warranty center during this portion of the warranty period.
Year 4-10: A minimal service charge will be placed on each item that has failed due to
manufacturer defects and/or accidental user installation problems. Should the item no longer be
produced and the item is not repairable, a similar item will be substituted at the manufacturer’s
discretion. The user must pay shipping to and from the authorized Lenz GmbH warranty center
during this portion of the warranty period.
Please contact your dealer or authorized Lenz GmbH warranty center for specific instructions and
current service charges prior to returning any equipment for repair.
Hüttenbergstraße 29
35398 Gießen, Germany
Hotline: [phone]
Fax: [phone]
[email protected] http://www.lenz.com
Lenz Agency of North America
PO Box 143
Chelmsford, MA 01824
ph: 978 250 1494
fax: 978 455 LENZ
[email protected]
This equipment complies with Part 15 of FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Please save this manual for future reference!
© 2007 Lenz GmbH, All Rights Reserved