Studer SW V4.0 OnAir 1000, Инструкция по эксплуатации и обслуживанию

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OnAir 1000 Digital Mixing Console
2-6 Hardware
SW V4.0 Date printed: 24.10.03
2.7 Standard Power Supply Versions
The power supply is made of a primary switching power supply unit, de-
livering a 24 V
DC
voltage to the secondary Power Supply that converts this
voltage to the required ±15 V, +5 V, and +24 V.
On the Primary Supply unit (89.20.2013) the mains voltage selection is
performed automatically. It is short-circuit proof. The fuse, however, is
soldered into the circuit and
must not be replaced in the field. In case of a
failure, the complete power supply unit must be replaced.
The secondary Power Supply (1.942.605.xx) generates all the voltages
required, except the +48 V phantom power; this voltage is generated on
the Controller Board.
Power consumption of an OnAir 1000 console is about 125 VA.
The OnAir 1000 can be powered by the mains voltage (100...240 V
AC
) as
well as by an external 24 V
DC
voltage (connector labeled “24V DC”). For
redundancy, these two power sources can also be connected to the console
simultaneously.
Internal/External Fuses For DC operation there is a fuse (F1: T 8.0 A H 250 V UL/CSA) located
on the PSU sub board (see component layout diagram on the next page). In
case of failure, this fuse must be replaced by a spare fuse of exactly the
same type and value.
Please note that for DC operation, an additional, external fuse is required
for cable and connector protection (T 10 A H 250 V UL/CSA)!
Wiring If using the 10pin 24 V
DC
connector, all +24 V pins (no. 1...3) and the
GND pins no. 8...10 have to be used in parallel.
Depending on the power supply mode, wire bridges have to be inserted
into the 10pin cable socket for correct processing of the power alarm
output’s voltage thresholds. Refer to the following table:
Supply mode Bridge(s) from pin no. to pin no.
100...240 V
AC
only No bridge required
24 V
DC
only 6-7
and
5-7
100...240 V
AC
and 24 V
DC
6-7
Earthing This unit must be earthed, due to the mains input filter network being con-
nected to the mains earth. Also in case of DC operation, earthing of the
unit is mandatory.
Refer to chapter 2.2.2 of the OnAir 1000 Operating
Manual for details.
Primary Supply
24 V / 200 W
89.20.2013
(Prim. Switching Reg.)
24 V
DC
Power
Supply
1.942.605.xx
(Secondary
Switching Reg.)
24 V
DC
+5 V
+24 V
Sub-
board 1
for PSU
1.942.606.xx
100...240 V
AC
,
50...60 Hz
–15 V
+15 V
P-Fail
24 V
DC
(–15 V) VIMB
(+15 V) VIMB