SM500A—Automatic Switching System
Black Box Corporation
23
990-000-0001-E8
CAUTION: Do not attempt to connect the AC Redundant Power Supply until you have read
the installation instructions below.
AC Redundant Power Supply Connection (see figures 3.3A)
1.
Mount the AC Redundant Power Supply in the communication cabinet.
2.
Check the slide switch located on each plug-in power unit for proper AC
voltage selection, 115 V (factory set) or 230 V. This procedure must be
followed to avoid damage to the power unit. For 230VAC application, install
the supplied fuses.
3.
Slide in the two plug-in Power Supply Units (SM537) and secure them by
tightening the screws.
4.
Connect AC cords to the Power Supply Units. Do not connect the AC cords
yet to power sources.
5.
Connect cables (SM539) from the rear connectors on the AC Redundant
Power Supply labeled SYS 1, . . . , SYS 8, to the corresponding chassis. The
POWER connectors are located in the rear of the Power Supply/Control
Card.
6.
Plug the two power cords from the AC Redundant Power Supply into
different AC sources. Make sure that the two POWER indicator LEDs,
located on the AC Redundant Power Supply front panel, light up. Also, see
that the PS1 and PS2 LEDs on the SM500A chassis front panel are
illuminated.
NOTE: For enhanced redundancy, the AC Redundant Power Supply may be fed from a
115VAC source at one power input and a 230VAC source at the other power input.
