Lenz GmbH LR101 DIGITAL plus Feedback Module

DIGITAL plus LR101Feedback Encoder

Please select from the following:

General Information
Programming the LR101
Our recommendation for the selection of addresses
Programming using a jumper
Programming using the Programming Output of the Command Station LZ100
Connecting the LR101
Function of the LR101
Complete Manual in PDF format

General Information for the Feedback Encoder LR101

The LR101 sends information back to the command station LZ100, such as occupancy of a block or activation of a contact.
Information stored in the command station can be accessed by any unit linked to the XpressNet, for example the Hand Held LH100, the Tower Cab LW100 or by software through the Computer Interface LI100F.
The command station polls all connected Feedback Encoder LR101 in series. This process lasts approximately 30 msec. Only the LR101 encoders with a change in status are transmitting information back to the command station.
A transmission from an LR101 needs app. 2 msec, which adds to the polling time. The length of the total cycle is therefore dependent on the number of status changes.

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Programming the LR101

The address of the LR101 has to be programmed before it can be used on the layout.
The LR101 has 8 status lines, the first one is for the 8 status signals on input 1, the second for the status lines on input 2.

Example: The LR101 is programmed to the address 18. The 8 status lines reply to the address 18

Important: Each address can only be used once ! Otherwise, two units will reply to a poll by the command station. If you program the first LR101 to the address , the next LR101 has to be programmed to the address 2.

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Our recommendation for the selection of addresses:

Range of addresses: 1 - 127.
Accessory Decoder (LS100, LS110) and Feedback Encoder use the same address space in the Command Station. It is recommended to start with the address 65 for the Feedback Encoders.
A table is included at the end of this information which shows the connection between turnout addresses and feedback addresses.
You have a choice between two methods for programming, either using the pushbutton or programming using the output of the LZ100 command station.

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Programming using the pushbutton:

If your LR101 is already connected to J and K on a power station, you can program it to another address using the following steps. If you supply power to the LR101 from a separate AC source, then you must remove this connection and make a connection to terminals J and K on a power station (LV090, LV100, LV101 or LV200) for writing the address. See illustration 2.
Make certain that your system is not in “Emergency off” or “Emergency Stop”.
On hand held controller LH100 select the turnout throwing mode, key sequence F, 5. Enter the address that you want to program the LR101 to as the turnout address. If you already have an accessory decoder programmed to that address it does not matter for this operation!
Now press down the button on the LR101 and hold it pressed until the LED lights up.
On LH100 now press either the “+” or “-” key. This sends out a switching command, containing the address. This address is received by LR101 too (it is connected to the same wires as the accessory decoders) and is stored in CV1.
When this procedure is complete, the LED turns off again.
If you selected a turnout address that is outside the allowed LR100 range, then there is no new address entered, the old address remains unchanged. To indicate this, the LED flashes rapidly.

Figure 1: Programming the LR101 using the pushbutton

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Programming using the Programming Track Output of a Command Station

For this method, you will need the command station, a power station and a Hand Held capable of activating turnouts.. At this point, we are assuming that these units are correctly set up and connected.
Please connect one of the terminals with the terminal P and the other with the terminal Q of the LZ100.
As described in the Information for the Hand Held LH100, select the programming modus. (Key sequence F-8-ENTER-ENTER)
Select memory location 1 to be accessed, since the LR101 saves the address at this location. On the LH100, enter the address for input 1 of the LR101. Start the programming sequence by pressing 'Enter'.

Figure 2: Programming the LR101 using the Programming Output of the Command Station.

Important:

The address of an LR101 cannot be read. If, after the address has been set, the search sequence is started by pressing enter, the error message "ERR02" will appear. This error message can be cleared by pressing the key 'Cl'.

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Connecting the LR101

The LR101 can powered by either the Digital track voltage or an AC power supply. (12 - 16 V) In the first case, the terminals on the LR101 are connected to the terminals J and K on the LV100.
The terminals R and S are the connectors for the feedback bus. Please connect these terminals to the same terminals on the LZ100. Several LR101 can be wired in parallel, as shown in figure 3.

Figure 3: Connecting the LR101 to the Feedback Bus of the LZ100.

Apart from the occupancy detector LB100, any potential free switch can be connected to the LR101. Figure 4 demonstrates connecting devices to the LR101. For clarity, only the wires between the primary detectors and the LR101 are shown. All other connections are not shown, but are important for the proper function of the LR101. Please consult the manual of the occupancy detector LB100 for a complete description of its set up.

Warning:

Do not use track contacts that connect the track voltage to the LR101 ! You will destroy the LR101 !

Figure 4: Connecting different feedback devices to the LR101.

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Function of the LR101

As mentioned in the introductory chapter, the function of the LR101 is to send status information to the LZ100.

In detail, the process works as follows:

If a connection between one of the status lines and one of the terminals is made or severed, the LZ100 is informed about it on the next polling.
Such a connection can be made in several ways, the use of a Reed switch is demonstrated in figure 4.
The occupancy detector represents a similar connection, if there is a current draw in the connected track.

Example: Reading the occupancy detector with the LH100

Following, we will explain how the readout on the LH100 changes, if the status of one of the lines on the input of the LR101 is changed. The following procedure assumes a Hand Held with software revision 1.5 or higher. Please check your Hand Held for the correct software revision (key sequence F, 9, 9).
For this example, the circuit shown in figure 5 is used. If you want to try the following steps yourself, set up the circuit as shown.
In this example, the input 1 of the LR101 is programmed to the address 39.

Figure 5: Example

Please follow with these steps:

Press	The displayn shows:

Since the push button in Figure 5 is shown in the open position, none of the status lines shows on the display. By closing and opening this push button, the display changes as follows:

Contact is	The display shows
closed
open

As you can see, the function "Read Feedback" (Rückmeldungen Auslesen) on the LH100 is well suited to test the correct set up of the LR101.

Table: Feedback addresses / turnout address

F-Feedback address; T-turnout address, FP-Feedback position

F	FP	T		F	FP	T	F	FP	T
1	1 to 8		1 to 4	23	177 to 184	89 to 92	44	345 to 352	173 to 176
2	9 to 16		5 to 8	24	185 to 192	93 to 96	45	353 to 360	177 to 180
3	17 to 24		9 to 12	25	193 to 200	97 to 100	46	361 to 368	181 to 184
4	25 to 32		13 to 16	26	201 to 208	101 to 104	47	369 to 376	185 to 188
5	33 to 40		17 to 20	27	209 to 216	105 to 108	48	377 to 384	189 to 192
6	41 to 48		21 to 24	28	217 to 224	109 to 112	49	385 to 392	193 to 196
7	49 to 56		25 to 28	29	225 to 232	113 to 116	50	393 to 400	197 to 200
8	57 to 64		29 to 32	30	233 to 240	117 to 120	51	401 to 408	201 to 204
9	65 to 72		33 to 36	31	241 to 248	121 to 124	52	409 to 416	205 to 208
10	73 to 80		37 to 40	32	249 to 256	125 to 128	53	417 to 424	209 to 212
11	81 to 88		41 to 44	33	257 to 264	129 to 132	54	425 to 432	213 to 216
12	89 to 96		45 to 48	34	265 to 272	133 to 136	55	433 to 440	217 to 220
13	97 to 104		49 to 52	35	273 to 280	137 to 140	56	441 to 448	221 to 224
14	105 to 112		53 to 56	36	281 to 288	141 to 144	57	449 to 456	225 to 228
15	113 to 120		57 to 60	37	289 to 296	145 to 148	58	457 to 464	229 to 232
16	121 to 128		61 to 64	38	297 to 304	149 to 152	59	465 to 472	233 to 236
17	129 to 136		65 to 68	39	305 to 312	153 to 156	60	473 to 480	237 to 240
18	137 to 144		69 to 72	40	313 to 320	157 to 160	61	481 to 488	241 to 244
19	145 to 152		73 to 76	41	321 to 328	161 to 164	62	489 to 496	245 to 248
20	153 to 160		77 to 80	42	329 to 336	165 to 168	63	497 to 504	249 to 252
21	161 to 168		81 to 84	43	337 to 344	169 to 172	64	505 to 512	253 to 256
22	169 to 176		85 to 88

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