The DigitalPlus locomotive decoder
LE110/111 is suitable for all DC motors with continuous current draw of 1.0 Amp. or less.
These decoders have three outputs which can be used for directional lighting and one
additional function or as 3 independent functions. The LE111 comes with an NMRA RP-9.1.1
Medium Plug while the LE110 comes with normal wires.
Please select from the following
LE110/111 Index | Lenz GmbH Home Page
The locomotive must be tested for excellent operation on normal DC power before installing the decoder. Clean any dirt or oxidation from the wheels and pickups, and make sure that electrical contact is smooth. Install extra pickup wipers if necessary. The decoder cannot correct for electrical pickup flaws! Take note which motor brush is connected to the right rail and which to the left; this information should be saved as it will be needed later on the installation process.
Make Sure Locomotive does not exceed decoder current Capability.
All of the decoder outputs are protected by internal current limiting circuitry, up to a maximum 1.2A permitted. It is never permitted for the total of the motor load plus all function outputs to exceed 1.2A. Of course, each individual load must be less than the total. For example- suppose the motor may require as much as 1.0A continuously. Then the function outputs combined must not exceed 0.2A. If the directional headlights each require 50mA, then function one (F1) load must not exceed 150mA.
After disconnecting the wiring to the motor brushes, the brushes MUST be isolated from the rail pickup. Achieving isolation may require some different approaches on different locos, perhaps unsoldering wires, placing a thin piece of insulation plastic between brush terminal and contact spring, or whatever. In other words, after isolation there must be NO electrical contact between the motor and the rail pickup. If you have a VOM, check for infinite resistance between the motor and all the wheels.
LE110/111 Index | Lenz GmbH Home Page
With the LE111 you simply install the
plug in the locomotives socket. The direction of the locomotive under digital control can
be reversed by plugging in the plug in the other direction.
There are two important wiring options with the LE110, depending on how the locomotive is constructed. If the lamps are grounded to the frame, follow diagram 1. If the lamps are isolated from the frame (or you make them isolated) then follow diagram 2 which is the preferred installation approach.
Step by Step Installation
The following example show the directional headlight option being used)
LE110/111 Index | Lenz GmbH Home Page
Place the loco on the programming track, with out the body, and read back the loco address from the decoder. If the decoder is properly installed, you will be able to read back the factory-set address 03. If you cannot read back the address then you will have to double-check the wiring.
With the LE110/LE111 and the LE130/131 (and only these decoders) you can use the self-diagnostic feature of the decoder. Do not attempt this with any other type of decoder! If no rear headlight is installed, temporarily solder a lamp to the yellow and blue wires. Place the loco on the running track and turn on the power. Select loco 03 with the LH100 and make sure the headlight is turned off (no headlight* on the LCD). compare the lamp behavior to the following table:
Take the loco off the track, correct the indicated problem, and re-test.
When the loco passes the test, you can connect the extra function, viz.:
Now you are ready to program the loco address and begin test running.
LE110/111 Index | Lenz GmbH Home Page
(programming the LE110 and the LE111 is identical)
To program the decoder you will need the LH100 and the LZ100 properly wired to a programming track. The program values installed by the user are stored in "positions" internal to the decoder and will be saves even when the layout is switched off or the loco taken off the tracks. It is never necessary to take the loco apart to program or re-program it.
The LE110 has 128 storage positions. The higher positions can only be accessed by use of position 6 as a "gate" or "key". In fact, position 6 is a pointer register.
Each of the positions has number, known as its address. For example, the position which holds the loco address is known as position 1, while the brake momentum is position 4. Now the pointer register behaves something like a treasure hunt!
Suppose on some occasion you came home, hoping to have coffee with your wife (or husband, or whoever puts up with your model railroad hobby). But you arrive home, and you wife (or husband , whatever...) is not there. Instead you find a note on the kitchen table which read "At Mom's, come have coffee there". This note points to where you can go to have your coffee.
Similarly, the pointer register in position 6 signifies a position where the desired thing can be found, just as the note does. In the decoder, it will point to the position of the speed table.
In the following descriptions, the position numbers is shown on the left and the allowable values are shown on the right followed by an explanation of the purpose of the position.
The LE110 is shipped from the factory with the following values set in the various positions.
Notice that the values 1-15 in position 2 indicate that the standard speed curve will be used. This standard curve cannot be changed. This has the advantage that there will always be "fallback" in case of error or confusion. Simply place a value 1-15 in positions 2 to fallback to the standard speed curve.
LE110/111 Index | Lenz GmbH Home Page
All Lenz Digital locomotives decoders have 64 internal speed values to control the actual loco speed. The LH100 (version 1.5) provides 14 speed steps for control. A speed curve (internal to every decoder) defines what locomotive speed will be used for each speed step. In contrast to other decoders the LE110 allows the user to determine the speed curve that works best for a particular locomotive. Consider the chart shown:
The dotted line speed curve spreads the speed values evenly over the 14 speed steps; the solid line shows a speed curve that allows a wider range of slow speed values suitable for a switching locomotive for example.
The speed curve is really a table of values stored internally which specifies for every speed step, 1-14, what the associated loco speed should be. So, for example, step 7 on the dotted line specifies speed value 32, while the step on the solid line calls for speed value 10. When changing speed steps with the LH100, the decoder's momentum feature will automatically make the transitions through all the intermediate speed values, yielding smooth operation. Thus any jerky operation is prevented.
Write, for working purposes, a speed table similar to the example shown below which you would like to install in your decoder. The table is merely for illustrative purposes and is probably not "ideal "for any locomotive.
The decoder must be properly installed and tested, and the loco must be on the programming track with the power on. We assume you are familiar with the general process of programming. Items in Bold are LH100 key strokes.
Important
After you have written, or read back, the speed curve values, program the value 0 or 1 into position 6 so that in the future you will not accidentally program some unwanted values into the speed curve table (Esc 6 Enter 0 Enter)!
LE110/111 Index | Lenz GmbH Home Page
Footnotes:
(1) Digitrax command stations can not currently program the speed curves or other advanced features of this decoder. Contact your dealer for assistance.
Copyright 1995-2001 by Lenz Elektronik, GmbH. All Rights Reserved
This page was designed by Debbie Ames, owner tttrains
