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Figure 16-2 provides a general view of an ACE3600 CPU with multiple I/O expansion frames
(two to seven.) The CPU on the main frame (Port Eth1) is connected using a LAN cable to the
LAN switch on the main frame (Port Eth1-M). The expansion modules on each of the seven
I/O expansion frames are connected using a LAN cable to the expansion LAN switch (Eth2-
Eth8) on the main frame. The expansion power supply on the first I/O expansion frame is
attached via DC cable to the power supply on the main frame. The power supplies on the other
I/O expansion frames are each attached via DC cable to the power supply on the previous I/O
expansion frame, in a daisy-chain manner. Accessories such as a mobile radio, battery, and
accessory box are attached to a separate 19" chassis.
Note that the number of chained frames is limited by the total power and voltage drop.
Main PS (AC/DC)
CPU (3640)
Expansion Switch
Communication
Cable
DC
Cable
Expansion
PS (DC)
Expansion
Module
Figure 16-2 ACE3600 I/O Expansion – Multi-Frame Example
Note: The number of expansion power supplies that can be cascaded to the power supply on
the main frame is limited. When required, DC or AC power supplies should be installed on the
expansion frames to meet the accumulated power consumption requirements.
Main Rack
LAN Cable
I/O Rack #1
Radio/Batt. Chassis
(optional)
LAN Cable
I/O Rack #2
16-3
I/O Expansion
LAN Cable
I/O Rack #7
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