Moog Focal 903, Руководство пользователя

Страница: 32 / 96

903-0628-00 Rev. 1 Model 903-HD User's Guide – FMB-X-2.5
Focal Technologies Corp. Page 3-12
3.3 Power Supply
The 4VID and 8VID systems use the power supplies described in the table below.
Table 3-5: Typical Power Supplies for 903 Console and Remote Systems
Power Supply Description System End
AC Module (PSU) 115/230 VAC, 60W, 47-63 Hz Auto-ranging Console
24 VDC DC-DC Converter, +24 VDC Input, Range 18-36 VDC. Remote
WARNING: RISK OF ELECTRIC SHOCK
To avoid risk of injury from electric shock, do not
open the enclosure of the power supply module.
Refer servicing to qualified personnel.
Console
The 4VID and 8VID console modules use a standard power supply unit (PSU). This PSU is a 3U x 8HP
Eurocassette with a 100 mm guiding height.
Current draw from the primary 115 VAC for a typical console module is approximately 0.3 A.
As shown in Figure 3-10, the console modules have a power switch on the far right panel and a detachable
(IEC-320) power cord on the back cover plate. Status of the three internal rail voltages — +5 VDC, +12 VDC
and -12 VDC — is represented by green LEDs located on the front panel of the power supply module. A
flickering or dim LED indicates a problem with the corresponding rail voltage, possibly caused by an
excessive load.
All standard Eurocassette power supplies provide full transformer isolation between the primary input and the
backplane rail outputs. The 4VID and 8VID console modules use AC input power and therefore the protective
earth lead on the power cable is connected through the Eurocassette frame to the rack of the multiplexer,
which is normally isolated from internal digital and analog ground.
Remote
Each 4VID and 8VID remote module uses two DC-DC converters that are part of the high density -X
backplane. One DC-DC converter (75W) o5 VDC and the other DC-DC converter (10W) outputs
±12 VDC. Each remote module re24 VDC input power from a power supply capable of providing 2A.
See Figure 3-10 for DC power connector location.