Expansion Power Supply Module - Motorola V186 - Cell Phone - GSM System Planner Manual

Expansion Power Supply Module

The expansion power supply module (10.8-16V DC) extends power from the power
supply on the RTU's main frame to the I/O expansion frame, or from one I/O expansion
frame to another.
Note that this module is provided as default power supply in each
I/O expansion frame unless replaced with the other power supply
options.
Characteristics of the expansion power supply module:
Located on the leftmost slot of the expansion frame
Provides overvoltage protection for the I/O expansion
frame
The expansion power supply can only be connected to the power
supply on the ACE3600 RTU main frame and to other expansion
power supply modules. If all the power supplies on I/O expansion
frames are attached via DC cable to the power supply on the
previous I/O expansion frame in a daisy-chain manner, the main
power supply controls the entire RTU. This enables the user to turn off the entire RTU
simply by turning off the main power supply.
If the main power supply does not control all other power supplies in the RTU (e.g. when
the total power consumption required does not allow all frames to be daisy chained), it is
recommended that the main power provided to the power supplies be connected to a
single external on/off power switch.
Important: When adding expansion power supplies, make sure that you do not exceed the
total power limit of the main power supply, as all connected expansion power supplies
drain energy from it. Also make sure that the voltage provided to each power supply
(when connected in a daisy-chain manner) does not fall below the minimum operating
voltage (see RTU I/O Expansion - Power Considerations below).
The power supply on each expansion frame must be connected to the grounding strip of
its frame.
The expansion power supply includes two slow blow fuses, one 4A fuse for overcurrent
protection for the I/O expansion frame and one 8A fuse for maximum current via the
Power in/out circuit.
The expansion power supply module is connected to another ACE36000 power supply
using a DC power cable (FKN8559A/3002360C26).
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