Clear-Com Eclipse-Omega - Manual (Page 29)

Clear-Com Communication Systems
Eclipse Matrix Installation Instruction Manual 3 - 5
INTERFACE MODULE FRAME POWER SUP-
PLY REQUIREMENTS
IMF-3 Interface Module Frame
As a rule-of-thumb, one PSU-101 power supply unit is required for
every two IMF-3 frames. There are two exceptions to this rule. The first
exception occurs when the frames have a large number of CCI-22
party-line interfaces which require no DC power from the IMF-3 frame.
However, an IMF-3 with only CCI-22 interfaces still needs to be
connected to a PSU-101 as the IMF frame itself needs some DC
power for the circuitry on its rear panel.
The second exception occurs when using multiple TEL-14 telephone
interfaces. An IMF-3 interface frame will only power eight TEL-14
interfaces. If more TEL-14 interfaces are required, they must be
installed in a second IMF-3 frame with a second power supply.
A PSU-101 requires 90 to 260 VAC at 45 to 65 Hz with a maximum
dissipation of 80 W. A PSU-101 connected for redundancy requires
very little AC current unless it is used.
An audible alarm is included in the PSU-101, and an additional set of
alarm-relay contacts are provided on the supply. Clear-Com
recommends that these contacts be connected to the external alarm
input of the matrix frames. If any of the power supplies in the PSU-101
fails, it would cause a system alarm. LEDs on the front of the
PSU-101s will indicate the failure.
Installing two PSU-101 power supplies per application provides
redundancy because either of the two PSU-101 power supplies can
power a complete system. If one fails, it can be removed without
interruption of the entire system. Rear panel connectors provide easy
parallel connection to the IMF-3 Interface Module Frame.
The current capacities of the power supplies are as follows:
• +9 V analog 3.0 A
• -9 V analog 3.0 A
The following chart provides the current drain of the +/- analog power
supplies for all components in the system. Some devices, such as
interfaces, have a varying current depending on the operation of
features. In applications where it is possible to activate all operating
features of all components used, use the maximum current column for
planning.
For more information on
interface frames, refer to the
Interface Frames Instruction
Manual.