Ascotel IntelliGate 2025/2045/2065
Part 4 PBX power supply 729
4. Fit the power supply cable without connected battery to the DC-48V module.
Make sure the polarity is correct!
5. Connect the DC-48V module to the PBX. To do that connect the cable to the
primary connector and secondary connector (see Fig. 4.18).
6. Use the screws provided to fasten the DC-48V module to the angle brackets.
7. Secure the cover to the power supply area.
8. Connect the DC power supply. Make sure the polarity is correct!
If an isolating point is provided for the 48 VDC, it must be equipped to handle a
current of 5 A (with 48 VDC).
The PBX with the installed DC-48V module can also be operated on the 230 VAC
power supply.
4.3 Supply power available for terminals
The 40V power supply required forthe connected terminals is rated for the power
requirements of a typical system configuration. The power available is 28W for
the basic system 2025 / 2045 and 70W for the 2065 system. To check the power
requirements of an existing system refer to the Tab. 3.22 for details of the average
power requirements of terminals. The check can also be carried out automatically
using the Planning Manager, which can be started from AIMS (see "Project Man-
ager", page 148).
4.3.1 Overload shutdown
A red LED (OVLD) on the connector strip above the 7-segment display is used to
signal that the rated power (100%) of the terminal power supply has been
exceeded (see Fig. 4.20). If the rated power is exceeded for more than approx. 4
seconds, the event message "Terminal Power Supply Overload" is generated.
If the rated power is exceeded by 25% for more than approx. 4 seconds, the
event message "Terminal Power Shutdown" is generated. The power supply is
then shut down step by step, starting with the expansion slots with the highest
numbers.
Once the power demand drops back below 100% as a result of the gradual shut-
downs, the disconnected ports are reconnected again after approx. 10 seconds.
(Once power is restored, it can take up to 90 seconds for terminals that were in
an active connection at the time of the shutdown to be up and running again.) If
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