The Booster 10765; Terminal Loops In Digital Operation - Roco multiZENTRALEPRO Manuel

5.5 The Booster 10765

You require a booster if the system often switches off without the occurrence of a short circuit, i.e. no locomotive or
carriages have derailed and there are no faults in the wiring. In this case, there is an overload due to too many con-
sumers (locomotives, illuminated carriages etc.). This is indicated by the flashing red LEDs at the multiZENTRALE
The booster connects an additional transformer (e.g. ROCO 10718, 10725 or 10850), provides more energy and thus
clears the overload.
Booster and multiZENTRALE
devices requires its own voltage supply.
5.5.1 Connecting one or more boosters 10765
Divide up the system into separate supply sections so that the number of consumers in each supply section is as
evenly distributed as possible. You calculate the power consumption in a section as follows:
Stationary locomotives with light, approximately 100 mA
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Travelling locomotives from approximately 300 to 600 mA depending on size and load
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Illuminated carriages, approximately 30 mA depending on the bulb
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Digital coupling or smoke generator, approximately 100 mA
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If the power consumption exceeds 2.5 A, the section will be overloaded and will need to be divided up. You must
also make sure there are large tolerances in the current consumption, especially for light bulbs. Use the 42624
digital turnout drive or connect another turnout decoder directly to the drive circuit. You will then have to calculate
approximately 500 mA reserve for the switching current of the turnout.
If you have ensured that the system has a sufficient supply of power, the division of the booster sections is of no
significance to the reliability of commands, for drive operation or for switching turnouts.
Switch off the system before installing a booster. Divide the system into supply sections. Disconnect the tracks
electrically from each other in the respective places (on both sides!) wether using ROCO insulating rail connectors
42611 or 61192, insulated track or by sawing the rail profiles. Install a section of power track (e.g. 61190) in the new
supply section and connect it to the "Track Out" socket on the booster. Connect the booster to its transformer. Now
connect the booster with the included special patch cable and the multiZENTRALE
Out" socket of the multiZENTRALE
complete wiring.
If required, you can connect further boosters to the "Booster Out" socket of the 10765 booster. A maximum of four
10765 boosters can be connected to the multiZENTRALE
However, for large systems more than four 10765 boosters can be connected in conjunction with a 10779 braking
generator. The 10764 amplifier, 10765 booster and braking generator have to be connected in the following sequence:
multiZENTRALE – 3 x 10765 – 10779 – 3 x 10765 – 10779 etc.
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Make sure that the tracks have the same polarity at the change-over turnout so that short circuits are not caused
when a train passes over the separating turnout. If a short circuit occurs, turn the power track plug 180°.
It is imperative that you make sure that the power track does not contain any capacitors.

5.6 Terminal Loops in Digital Operation

Every model railway enthusiast knows the problem of terminal loops from his / her conventional system. In digital
operation too, the left-hand rail profile meets the right-hand rail profile after a terminal loop and would cause a
short circuit without the appropriate wiring.
The ROCO 10769 terminal loop module solves the problems of a terminal loop in digital operation. Isolate the
terminal loop with both poles on both sides by disconnecting the terminal loop completely from the rest of the
system, using either insulated connectors or by sawing the rail profiles (see fig. 6 on page 93). It is imperative that
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or two boosters may not be connected to the same transformer! Each of these
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and into the "Booster In" socket of the booster. Fig. 4 on page 91 shows the
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by plugging into the "Booster
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