Lenz Digital Plus LS150 User manual

Accessory decoder LS150 1

The DIGITAL plus LS150 turnout decoder provides cost effective turnout control for

up to 6 independent turnouts.

∗Suitable for twin-coil snap action switch machines

∗Suitable for motorized switch machines

∗High current provision to support Peco and Atlas switch machines

∗The 6 turnout addresses can be sequential or up to 6 user selected

addresses.

∗Control using separate push-buttons possible.

∗Configuring the LS150 does not require a separate programming track and the

parameters can be changed at any time in the future even after installation.

LS150

Turnout Decoder for up to 6

independent turnouts

Art. No. 11150

December 2003

Submitted to the NMRA for

C&I testing

Accessory decoder LS150 2

Contents

LS150 Turnout Decoder for up to 6 independent turnouts ..................................1

Contents...................................................................................................................2

Important advice, please read first! ..........................................................................3

Use of the LS150 .....................................................................................................3

Technical data..........................................................................................................4

Outputs of the LS150...........................................................................................4

Power and DCC signal Inputs of the LS150 ........................................................6

Connecting the LS150..............................................................................................7

Connection to the AC power supply ....................................................................7

Connection to the NMRA DCC digital system .....................................................8

Connecting twin-coil switch machines .................................................................8

Connecting motorized switch machines ..............................................................9

Connecting a separate push-button to the LS150 .............................................10

Controlling the outputs ...........................................................................................11

Setting the address ................................................................................................12

Setting outputs with sequential addresses ........................................................12

Setting individual addresses and pulse durations of outputs.............................13

Resetting the decoder ............................................................................................14

North American Warranty.......................................................................................16

Accessory decoder LS150 3

Important advice, please read first!

The LS150 is a component of the Digital plus by Lenz®system

and was submitted to intensive testing before delivery. Lenz

Elektronik GmbH guarantees fault-free operation provided you

follow the advice given below:

Any use other than that described in this operating manual is not

permitted and all guarantees will become void if the LS150 is used

inappropriately.

Connect the LS150 only to devices which are designated for such

connection. This operating manual will inform you which devices

are suitable.

Observe the technical data contained in this operating manual. Do

not in any case exceed the values stated for voltage and power as

this could damage the LS150.

Do not expose the LS150 to damp locations or direct sunlight.

Use of the LS150

The LS150 is a turnout decoder for use in connection with the

Digital plus by Lenz ®or any other NMRA-DCC compliant system.

Turnout decoders are the connecting link between the digital

system and the turnout switch machine. The LS150 can also be

used to drive other layout devices that are driven by coils (for

example switch machines, relays, uncouplers, semaphore signal

drives etc.) on your model railway layout.

The LS150 was designed specifically for the connection of twin-

coil machines and relays. Here, the AC output of the LS150 is

particularly advantageous for switching twin-coil switch machines

very reliably.

Motorized switch machines can also be connected to the LS150;

this connection requires (depending on the drive used) the use of

an additional 2 simple diodes per turnout.

Accessory decoder LS150 4

Technical data

by Lenz

LS150

Lenz Elektronik GmbH D 35398 Giessen

6 connections for controlling 6 turnouts

LED

Transformer

connection

Push-

button

Connection to track

outputof the

digital system

Range of addresses 1 - 1024

Max. voltage on AC input 16 V

Max. voltage on input J, K 24 V

Output voltage approx. 1 V less than

voltage on AC input

Max. power on outputs:

up to 1 sec pulse duration 3 A

more than 1 sec pulse duration 1 A

Pulse duration of outputs settable from 0.1 to 10 sec

Minimum power consumption of

output

10mA

Dimensions 120 x 60 x 20 mm

Outputs of the LS150

The LS150 has 6 outputs, which means that up to 6 devices

(switch machines and/or semaphore signal drives, uncoupling

Accessory decoder LS150 5

tracks etc.) can be connected to a LS150 and controlled

individually.

Pulse Duration

Having received a turnout command for an output, this output will

be switched on. It will remain so as long as the turnout command

is being sent. Afterwards the output will remain switched on until

the set pulse duration expires.

The pulse duration of the outputs can be set individually from 0.1

seconds to 10 seconds. This makes it possible to adjust the pulse

duration to the needs of the switch machine used. A pulse of 0.1

seconds is adequate for a normal twin-coil snap action switch

machine while a pulse duration of 3-4 seconds is normally needed

for a slow motion switch machine.

Overload protection

The outputs have a joint protection mechanism against overload. If

the permissible maximum power is exceeded, the LS150 will

switch off the terminal ("+" or "-" of an output) which experienced

the short-circuit. You can tell that a blocked status is existent by

the fact that the LED does not shine although a command was

received for this output. The corresponding terminal and all other

outputs still function! The short-circuited terminal can only be

reactivated by switching of the AC power supply.

Voltage on the outputs

AC voltage is applied to the outputs; this is a particularly

advantageous form of voltage for the use of the LS150 with twin-

coil switch machines and semaphore signal drives as well as

relays.

For technical reasons, the device connected to the

output must have a power consumption of at least

10mA.. This is not a problem with almost all customary

switch machines used for model railroads. If in doubt,

please contact the manufacturer.

Accessory decoder LS150 6

Power and DCC signal Inputs of the LS150

The LS150 is supplied with power via the AC input (≈). Use a

suitable transformer – we recommend the Atlas Generator.

Warning: AC voltage must be used to supply power to

the LS150. Do not use a DC supply as this can damage

the LS150.

The power of the transformer used must not exceed

45VA in order to guarantee the proper operation of the

short circuit load protection.

If you desire to use a transformer with a higher

amperage you must protect the LS150s with a 10 ohm

resistor (Radio shack part #271-1101)

The track outputs of a digital system (J,K for

Digital plus by Lenz ® systems) must not be used to

supply the LS150 with power!

The LS150 receives its commands to activate a turnout from the

NMRA-DCC digital system track outputs connected to the LS150’s

Jand Kinputs.

Accessory decoder LS150 7

Connecting the LS150

by Lenz

LS150

Lenz Elektronik GmbH D 35398 Giessen

123

Coil 1 Coil 2

Twin-coil switch

machine

Motorized switch

machine

AC transformer

co n nec ti o n to the track output of

the digital system

Figure 1

Connection to the AC power supply

Please see Figure 1 (Page 7), bottom left:

Connect the terminals (≈) to the terminals of an AC transformer.

Observe the maximum permissible voltage (see Technical data).

The power of the transformer must not exceed 45VA in order to

guarantee a functioning load protection. We recommend the use

of the Atlas Generator.

If you desire to use a transformer with a amperage that

is greater then 45VA, you must protect the LS150s with

a 10 ohm resistor current limiting resistor.

(Radio shack part #271-1101).

Accessory decoder LS150 8

Connection to the NMRA DCC digital system

Please see Figure 1 (Page 7), bottom right:

Connect the terminals J, K with the track output of the digital

system. In the Digital plus by Lenz ®system the track output is

also marked with J and K.

Connecting twin-coil switch machines

Please see Figure 1 (Page 7), top left:

Twin-coil switch machines have three connections. The common

connection of the two coils (2) is connected to terminal 'C'. The

cable of coil 1 (1) is connected to terminal '+'; the cable of coil 2

(3) to terminal '-'.

Depending on the switch machine used, when the output '+' is

activated this results in the switch is set to the ’branch’ or for

“straight”. If the action is opposite to what you desire, simply swap

the connections at the terminals '+' and '-'.

The following table contains common colour coding of some

manufacturers, with reference to the numbering of the cables in

Figure 1. Please use the operating manual of the drive used to

verify whether cable colours have been changed!

Cable no.: 1 2 3

ROCO red black green

Arnold blue grey purple

Fleischmann beige black brown

Trix yellow black green

Märklin blue yellow blue

Viessmann semaphore signal green brown red

When using twin-coil switch machines without auto-shutoff,

extending the pulse duration (see Section "Setting individual

addresses and pulse duration") beyond the factory default setting

is only necessary if the drive does not throw the turnout

completely despite functioning properly. Keep in mind that an

extension of the pulse duration can lead to the switch machine

warming up and is set excessively long, a twin-coil switch machine

can be damaged.

Accessory decoder LS150 9

Connecting motorized switch machines

Please see Figure 1 (Page 7), top right:

Motorized drives (such as Kato Unitrak, and Circuitron Tortoise)

normally require DC voltage for operation. By reversing this DC

voltage, the direction of rotation of the motor is changed and thus

the turnout is set to a different position.

In order to be able to turnout drives like those described with the

LS150, you need to add 2 simple rectifier diodes. Connect the

switch machine as shown in Figure 1 (Page 7).

The type of diodes you can use depends on the

power consumption of the switch machine.

Normally diodes of the type 1N4001 should be

sufficient. (Radio Shack part # 276-1101)

The position of the cathode can be seen by the

ring on the diode.

You may have to extend the pulse duration of the output used for

motorized switch machines to fully move the points to the

respective end position, For more detailed information, please

refer to the Section "Setting individual addresses and pulse

duration".

The use of the LA010 adapter is not required for the

operation of motorized drives. Moreover, this adapter

must not be connected to the LS150!

The motorized point drive from the company Pilz is connected

exactly like a double-coil point drive; no additional diodes are

required:

Connection to LS150: + C -

Cable colours Pilz drive: pink red yellow

Accessory decoder LS150 10

Connecting a separate push-button to the LS150

It is possible to control the turnouts connected to the LS150 via

separate push-buttons (or REED contacts). The point or signal

drive used should have auto-shutoff to avoid damage to the switch

machine should the push button be held down for two long a time.

Wire the push-buttons and/or Reed contacts in accordance with

Figure 2:

123

Coil 1 Coil 2

Twin-coil

switch

machine

tr ansf orm e r

connection

LS150

Lenz Elektronik Gmb

Figure 2

The figure shows a typical twin-coil switch machine. The two coils

are connected to the terminals + and - of an output of the LS150.

Two push-buttons K1 and K2 are connected as shown. When

connecting the push-buttons, make sure that the common

connection of the push-buttons is connected to the AC terminal on

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