Power Supply From The Digital System; Separate Power Supply; Wiring Of The Switchpilot Extension - Esu SwitchPilot User Manual

6.4. Power supply from the digital system

For smaller layouts with only a few devices to be switched
simultaneously the power supply of the digital system may be
used.
The screw terminals Pw A and Pw B are wired in parallel to the
Connect to track output of
a digital system
Figure 3: SwitchPilot uses digital system for power supply
terminal Trk A and Trk B.
Depending on the used solenoid devices the digital control unit
might not be able to supply enough current for a safe operation.
In this case an external transformer which can supply enough
current for these solenoid devices needs to be connected to the
Depending on the used solenoid devices the digital control unit
might not be able to supply enough current for a safe operation.
In this case an external transformer which can supply enough
current for these solenoid devices needs to be connected to the
SwitchPilot (see 6.5). When using certain solenoid devices (i.e.
Märklin® K track turnouts or PECO® motors) you should consider
an external supply of powerSwitchPilot (see 6.5).

6.5 Separate power supply

For larger layouts with many devices controlled by SwitchPilots
and simultaneously active we recommend to utilise a separate
power supply; in this manner the power for switching the devices
is not drawn from the track and thus reduces the load on the
digital system.
Only use commercially available equipment designed for model
trains and also take note of the maximum voltage as stated in
chapter 16 in order to avoid any potential damage.
This way of connecting cannot be used for programming on
the programming track, compare chapter 7.2.2.1
connect to track output
of digital system
Figure 4: separate power supply for SwitchPilot
6.6. Wiring the SwitchPilot Extension
The SwitchPilot Extension module is connected by inserting it
into the multi-pin connectors on the side of the SwitchPilot; push
until the retaining clips make positive contact.
Please also refer to figure 1.
The internal logic and relays of the SwitchPilot Extension module
receive power from the SwitchPilot.
connect to
transformer
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