2
/
5
Termination:
If the Rainbow PSU is the last unit in line (of DMX cabling), the DMX signal must be terminated.
Therefore you will find a termination switch on the unit.
If the termination switch is set to ON, the Micro PSU indicates this by the yellow LED and the
MAXI 4 PSU by the flashing red LED.
Output / Return sockets:
In order to protect the main DMX signal against negative influences caused by defective cabling,
etc..., it is galvanically separated from the Colour Changer outputs via opto-isolated coupling inside
the PSU.
The outputs to the scrollers are designed as XLR4pol. sockets, which are connected with the XLR4pol.
male socket of the first Colour Changer in line via Rainbow Power/Data cables. Further scrollers are
connected from the XLR4pol. female socket of the first Colour Changer in line to the second one,
etc...
In order to improve current feeding and DMX transmission, we always recommend to connect a so-
called return cable from the last scroller on each output back to the PSU return socket (XLR4pol.
male). This way the supply voltage will be led back again to the Colour Changer – in parallel to the
output. Via an internal termination resistor the loop cabling is automatically terminated when
connecting the return cable.
Protection:
Each PSU output is internally protected.
The fuse on the PCB inside the Micro PSU is able to put itself back.
Inside the Maxi 4 PSU you will find so-called “Pico Fuses”, which are located within the cable from the
PCB to the output sockets.
These fuses protect the PCB against damages, which might be caused by incorrectly assigned or
defective scroller cables.
The mains fuse of the Micro PSU is inside the unit and has got a value of 3,15 A (slow blow).
The mains fuse of the Maxi 4 PSU is situated next to the CEE 22 input socket and has got a value of 4
A (slow blow).
Pin assignment:
DMX 512 (1990) XLR 5pol.
Colour Changer signal cable XLR4pol.
Pin 1:
Ground (Screen)
Pin 1:
0 V ; Ground
Pin 2:
Data -
Pin 2:
Data-
Pin 3:
Data +
Pin 3:
Data+
Pin 4:
24 V +
Summary of Contents for Micro Series
Page 1: ...Power Supply Units PSU Short Reference...
Page 8: ......
