Cadac F-Type Instrukcja Użytkownika Pobierz pdf (Strona 10)

1-2 Connecting the mixer systems

F-Type Revision F2005-2

416 &RQQHFW#3RZHU#VXS SO\#V\VWHP V

41614 3RZHU#VXSSO\#V\VWHP#GHVFULSWLRQ

Cadac consoles are designed to allow the use of two independent power supply sys-

tems in a redundant configuration – “main” and “backup”. Both sets of power supply

units are used to power the console system so that under normal conditions, the

‘load’ is shared between the “main” and “backup” PSU’s. If a fault occurs in one of the

power units (causing it to ‘shut-down’), the remaining power unit will power the con-

sole.

For smaller B-Type consoles (consuming no more than 44A), it is possible to use the

8400 PSU. See 1.3.7 8400 switch-mode power supply unit.

One ±18V PSU and one +13V/+48V PSU is referred to as a “PSU System”.

Designate one pair of power supply units as “SYSTEM 1" and the other as “SYSTEM

2". PSU System 1 .and PSU System 2 should be connected to the same

phase

and

on the same ‘spur’, wherever possible. In situations where it is necessary to provide

a separate ‘feed’ to each PSU system pair, make sure that the cable lengths are the

same. This is to minimize any induced a.c. power input noise by ensuring that the

“EARTH IMPEDANCE” is the same for both PSU systems.

(

$5($#%5 $1&+#3$1(/

$5($#%5$1 &+#3$1(/

*1 '#%$5 *1'#%$5

1#/

0$,1#*5281'#5() (5(1 &(#($57+#(/(&752'(#6<67(0

FIG 1-2. AC mains grounding diagram (single phase 200-240V)

368#4$

368#4%

368#5$

368#5%

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 107 108

Brak uwag

Cadac F-Type Instrukcja Użytkownika Strona 10