TB8100 Installation Guide Connection 19
© Tait Electronics Limited February 2007
2 Connection
2.1 Auxiliary Power Supply Connections
PMU Auxiliary DC
Output
The PMU can provide an auxiliary DC output when it is fitted with the
optional auxiliary power supply board. This board is available with an
output of 13.65VDC, 27.3VDC, or 54.6VDC (depending on the model),
and is current limited to 3A, 1.5A or 750mA respectively. This optional
power supply is available on the auxiliary DC output connector
b on the
rear panel. DC from this output can be supplied to the +AUX_V pin on
the system interface connector
c on the reciter via the auxiliary DC input
connector
d on the system interface board (see “Reciter Auxiliary DC
Input from PMU” on page 20). The auxiliary DC power cables
e are
described in “Power Supply Connections” in the Installation and Operation
Manual.
The auxiliary power supply is configured with the Service Kit (Configure >
Base Station > Miscellaneous > Power configuration > Auxiliary power
control). Its operation can be controlled by Task Manager statements, for
example:
IF Digital input 01 active THEN Enable auxiliary supply.
Refer to the Service Kit documentation for more details.
Note The auxiliary power supply is not available in Sleep or Deep Sleep
modes.
You can connect multiple auxiliary power supply boards in parallel for
redundancy purposes, or to provide an output greater than 40W. Although
no active current sharing is used, auxiliary boards connected in parallel will
current-share before reaching their power limit. For redundancy purposes
the failure (or switching off) of one auxiliary board will not load any other
paralleled auxiliary boards in the circuit.
Two different types of auxiliary DC output connector have been fitted to
the PMU. The pin allocations for the 8-way connector fitted to PMUs
Figure 2.1 Auxiliary DC power supply connections
b
c
d
e
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