NOTE: Detailed information on the PIKO SmartDecoder 4.1 G is available as a PDF fi le on our Webshop
under the respective item number. The fi le contains a full description of all functions and operating
possibilities for the new SmartDecoder 4.1 G.
Description
The PIKO SmartDecoder 4.1 G decoder is a powerful and compact multiprotocol decoder for G scale locos, that can be
used with standard DCC, Selectrix, and Motorola digital systems as well as in DC or AC analog mode. It automatically
detects the operating system in use.
This load regulated decoder operates on an 18.75 kHz frequency and are designed for standard DC motors as well
as bell-shaped armature motors (i.e. Faulhaber, Maxon, Escap) that draw up to 1.2 A. Temporarily higher current levels
up to 2 A are easily tolerated.
The decoder is both RailCom
®
and RailCom Plus
®
-ready and recognizes ABC automatic stop sections and ABC
reduced speed sections.
The motor voltage can be controlled either by a simple three-step motor speed curve, with minimum, midpoint
and maximum voltage settings, or by a user-loadable speed curve, with 28 individually-set speed steps.
The decoder provides two directional lighting outputs, as well as seven additional special funtion outputs. Slow-speed
switching mode, with extended slow-speed range, along with three accelleration and braking rates, can be controlled
via function keys.
Installing the G PIKO SmartDecoder 4.1 G
The decoder may be mounted with the screws provided.
Make sure that there is no short circuit caused by the mounting screws. When you install the decoder, make sure that
there are no conductive connections anywhere inside the vehicle.
Connection of the G PIKO SmartDecoder 4.1 G
Install the decoder carefully according to the connection plan in this manual and the separate special wiring scheme.
Use an ohmmeter to check whether the installation is correct. Check for crossed wires and short circuits before and after
reinstalling the shell.
The decoder is protected against shorts and overload. However, if during the installation cables are reversed or if shorts
occur between functions (e.g. wheel set and motor), the protection will not work anymore and the decoder will be damaged.
We disclaim all responsibility and guarantee in case of misuse or damage of the decoder.
Place the model on your programming track with programming mode activated on your DCC system. During programming
or when reading the model’s DCC address, a small amount of current will fl ow through the model, which does not affect
the decoder; even in the event of a short circuit.
Input 3
Motor 1
Motor 2
Licht H
Licht V
U +
Input 1
GND
Rad li.
Rad re.
Input 2
U +
Lauts. A
Lauts. B
Aux 1
Aux 2
Aux 3
Aux 4
Aux 5
Aux 6
Aux 7
Aux 8
Servo 1
GND
GND
GND
GND
Servo 2
Servo 3
Servo 4
SUSI
M
black
red
black
red
red
white
yellow
Image 1: Connections of motor, lighting front and rear, wheel set
light
front
light
rear
motor
wheel set
Special functions A1 bis A8
The special function outputs A1 to A8 of the decoder are placed on the right screw terminal of the decoder (Image 1).
The power consumers connected to this terminal will be provided with current by the U+ terminal. You can fi nd detailed
information about all connections in the detailed instructin manual.
A short circuit in the area of the motor, lighting, pick-up wiper, or wheelsets can
destroy the decoder and electronics of the model!
SUSI interface
At the SUSI interface of the PIKO SmartDecoder 4.1 G you can either use a PIKO sound module with SUSI or a
suitable single-function decoder.
You can fi nd which CV should be programmed for its respective function output in the operating instructions.
The decoder is factory set to send data to the PIKO sound module via the SUSI interface.
#36123 PIKO SmartDecoder 4.1 G,
Multiprotocol loco decoder
for G scale locomotives
36123-90-7001_2019
* factory set values
PIKO Spielwaren GmbH
Lutherstr. 30
96515 Sonneberg
GERMANY
SmartDecoder 4.1
CV
Description
Area
Value*
1
Locomotive address
DCC: 1 - 127
Motorola: 1 - 80
3
2
Minimum speed (the speed from 0 until the locomotive is running at speed step 1)
1 - 63
1
3
Acceleration delay
1 means every 5 milliseconds the actual motor speed is increased by 1. If the maximum
motor speed is 200 (CV 5 = 50 or CV 94 = 200), then the acceleration rate from 0 to
maximum speed is 1 second
0-255
5
4
Braking rate (time factor like CV 3)
0-255
5
5
Maximum speed (must be greater than CV 2)
1 - 63
48
6
Average speed (must be greater than CV 2 and less than CV 5)
1 - 63
24
7
Software version (The processor can be updated)
-
differently
8
Manufacturer identifi cation decoder reset, values like CV 59
different
162
17
18
Long locomotive address
17 = higher value Byte
18 = lower value Byte
1 - 9999
192 - 231
0 - 255
2000
199
208
29
DCC standard confi guration
Bit 0=0 Normal direction of travel
Bit 0=1 Opposite direction of travel
Bit 1=0 14 Speed steps
Bit 1=1 28 Speed steps
Bit 2=0 DCC-only mode
Bit 2=1 Automatic analog/digital recognition
Bit 3=0 RailCom
®
turned off
Bit 3=1 RailCom
®
turned on
Bit 4=0 Speed steps over CV 2, 5, and 6
Bit 4=1 Use the characteristic curve from CV 67 - 94
Bit 5=0 Short address (CV1)
Bit 5=1 Long address (CV 17/18)
0-63
14
30 Error codes for function outputs, motor, and temperature monitoring:
1 = fault function outputs, 2 = fault motor, 4 = overheating
0-7
0
33-46
Easy function mapping
Assignment of function outputs to CVs
CV 33 Lighting function key (F0) when moving forward
CV 34 Light function key (F0) when in reverse
CV 35 Function key F1
CV 36 Function key F2
CV 37 Function key F3
CV 38 Function key F4
CV 39 Function key F5
CV 40 Function key F6
CV 41 Function key F7
CV 42 Function key F8
CV 43 Function key F9
CV 44 Function key F10
CV 45 Function key F11
CV 46 Function key F12
Assignment of individual bits (with CV100 / 101 bit x = 0, standard)
Bit 0 Front light output
Bit 1 Rear light output
Bit 2 Function output A1
Bit 3 Function output A2
Bit 4 Function output A3
Bit 5 Function output A4
Bit 6 Switching (Shunting)
Bit 7 Acceleration / deceleration
0-255
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
0
0
0
0
0
0
59
Resetting to factory settings (also possible via CV8)
1 = CV 0 - 256, as well as CV257 - 512 (RailCom
®
Bank 7)
2 = CV 257 - 512 (RailCom Plus
®
Banks 5 & 6)
3 = CV 257 - 512 (extended function mapping banks 1 & 2)
4 = CV 257 - 512 (modulation function outputs banks 3 & 4)
0 - 4
0
Value
0
1
0
2*
0
4*
0
8*
0
16
0
32
