tams elektronik LD-G-6 Manual page 13

LD-G-6
Connecting other accessories
Follow the connections diagrams (fig. 1a and 1b)!
Connect the accessories that are to be switched via the functions F1, F2
and F4 to F6 to the assigned points. Connect the accessorys' second
line to the return conductor for all functions (point X3).
!
Caution:
The return conductor for all functions (point X3) should under no
circumstances be connected to locomotive ground. Possible short
circuit! The locomotive decoder will be damaged in operation.
!
Caution:
You should always insulate loads that are connected to the return
conductor (point X3). The loads should not make contact with metal
parts of the locomotive. This can cause short circuiting and resulting
damage to the locomotive decoder!
Connecting the LEDs
The function outputs of the locomotive decoder switch against decoder
ground. For that reason you must connect the cathode (-) of the LED to
the output of the relevant function.
!
Caution:
If you use light-emitting diodes (LEDs) you must always operate them
via a series resistor.
LEDs are available in many different models. There are LEDs with 2-5
mA, but also LEDs with 15-30 mA power consumption. The series
resistor limits the current flow of the LED and will need to be calculated
for each model. Ask for the max current rating when buying your LEDs.
You can connect several LEDs in parallel to each output. In this case every
LED must have a series resistor of its own. If you connect several LEDs to
one output in series, only one series resistor is needed. The number of LEDs
connected in series to one output depends on the digital voltage.
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