Installation and Commissioning
257
7SS52 V4 Manual
C53000-G1176-C182-3

Pull out the module using the handle provided. Make sure to loosen the module
safety locks at the upper and lower rail.
 For the EAZ module proceed as follows:
a. Loosen the ribbon cable
b. Push aside alternately upper and lower PCB safety locks and
c. Pull out module carefully by hand.
 If you put the module down, place it on a surface suitable for electrostatically sen-
sitive devices (ESD).
7.1.2 Bay Unit
Panel flush mount-
ing or cubicle
mounting
 Swing the two labeling strips at the housing cover open. That exposes the 4 elon-
gated holes in the mounting bracket.
 Insert the bay unit into the panel cutout or the cubicle frame and secure it with four
mounting screws (see mechanical dimensions in Chapter 9.3.2, page 331 to 333).
 Connect a solid low-ohmic and low-inductive operational earthing on the lateral
earthing surface with at least a M4 screw. For this earthing strips DIN 72333 Form A
are suitable. Connect the strip to the protective earth of the panel.
 Connect the electric lines via the double-leaf-spring crimp contacts or the screw ter-
minals of the modular terminal blocks on the back of the bay unit. Pay attention to
the identification of the modular terminal blocks.
(Figure 2-8, page 24).
 Connect the bay units to the central unit by optical fibres. For this, use optical fibres
with prefabricated ST plugs. Provide a suitable strain relief.
Panel surface
mounting
 Mount the bay unit 7SS523 with 4 screws each to the panel (for mechanical dimen-
sions see Chapter 9.3.2, page 331).
 Connect a solid low-ohmic and low-inductive operational earthing on the lateral
earthing surface with at least a M4 screw. For this earthing strips DIN72333 Form
A are suitable. Connect the strip to the protective earth of the panel.
 Connect the electric lines via the screw terminals. You can use solid conductors or
stranded conductors with end sleeves.
 Connect the bay units to the central unit by fiber-optic cables. For this, use fiber-
optic cables with prefabricated ST plugs. Provide a suitable strain relief.
Removal of Mod-
ules
To adjust the pickup voltage of the binary inputs of the EFE or EFE_10 modules
proceed once as follows:
 Loosen the five screws of the front panel and swing the panel carefully to the side.
 Loosen the ribbon cable, push aside alternately the upper and lower PCB safety
locks and pull out the module carefully by hand.
 If you put the module down, place it on a surface suitable for electrostatically
sensitive devices (ESD).
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