Chapter 5: Installation
116 EST3X Technical Reference Manual
SFS1-ELEC chassis hardware and operator layer
components
WARNING: Electrocution hazard. To avoid personal injury or death from
electrocution, remove all sources of power and allow stored energy to discharge
before installing or removing equipment.
Caution: Circuit boards are sensitive to electrostatic discharge (ESD). To avoid
damage, follow ESD handling procedures.
The SFS1-ELEC Chassis Electronics Assembly provides the mounting, internal
power, and audio and data distribution for the SFS1-CPU Main Board, 4X-LCD or
4X-LCD-LC User Interface, up to three hardware layer option cards, and up to
three operator layer 4X Series control-display modules. The main board and user
interface are preinstalled on the chassis, as are three blank filler plates. The
blank filler plates are used to cover empty card slots when control-display
modules are not used.
Figure 27 on page 117 shows hardware and operator layer components installed
on the chassis. In the figure, the hardware layer shows the SFS1-CPU Main
Board installed in the first three slots on the chassis and three option cards in the
last three slots. The operator layer shows the 4X-LCD(-LC) User Interface, which
attaches to the main board, and three optional 4X Series control-display
modules, each of which attaches to the option card behind it. Refer to the
SFS1-ELEC Chassis Electronics Assembly Installation Sheet (P/N 3101766) for
connecting field wiring and for specifications.
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