Mounting The Carriage Lighting - tams elektronik WIB-31 Manual

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6. Mounting the carriage lighting

Shortening the carriage lighting
You can saw through the PCB at the places shown in fig. 1.
Pay attention not to damage the connection pads or the parts on
!
the PCB when sawing.
After shortening the PCB you get :

Section 1 with integrated function decoder, with integrated
smoothing capacitor, with connecting points for external bridging
capacitors and light dependent resistor (LDR).

Section 2 without integrated function decoder, without integrated
smoothing capacitor, without connecting points for external
bridging capacitors and light dependent resistor (LDR).
Connection to the power supply
Solder the connecting wires for the power supply to the connecting
points P1, P3 or P5 (from the left rail) and the connecting points P2, P4
or P6 (from the right rail). Follow the connection diagram fig. 2.
You can loop through the power supply from one PCB to the next and
thus supply several carriage lighting from one current source. Follow
the connection diagram fig. 3.
When using power transmissing couplings pay attention not to
!
exceed the maximum current of the couplings!
Connecting bridging capacitors
In order to bridge currentless sections you can connect external
bridging capacitors to the PCB (section 1).
For the supply of

the LEDs: an electrolytic capacitor with a voltage sustaining
capability of > 16 V or two goldcaps with a voltage sustaining
capability of > 5,5 V. Solder them according to fig. 6 to the
connecting points E1(+) and E1(-).

Loads connected to the outputs of the integrated function decoder:
an electrolytic capacitor with a voltage sustaining capability of
> 25 V or, when connecting it to analogue a.c. voltage, > 35 V.
Solder it according to fig. 6 to the connecting points E2(+) and
E2(-).
Choose an electrolytic capacitor or a goldcap with a capacity as high as
possible. As the housings of electrolytic capacitors and goldcaps are
bigger when the capacity is higher, the maximum capacity is limited by
the space available to mount the capacitor.
Connecting a light depending resistor
You can switch on and off the LEDs and the decoder´s function outputs
automatically depending on the surrounding lighting when mounting a
light depending resistor to the connecting points LDR1 and LDR2
according to fig. 7.
Connecting LEDs to the output AUX2
The output AUX2 has been designed for the connection of LEDs for the
back lighting. The maximum current is 20 mA. The necessary series
resistors are integrated on the PCB. Solder the LEDs according to fig. 8
to the connecting points AUX2 and RL2.
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