Burkert Type 8644 - Manual (Page 26)

26
Structureandfunctionofthemodules
7. sTrucTure and funcTiOn Of The
mOdules
7.1. Valve block
The valve block is composed of the following assemblies:
• Connection modules / feeds (grouped connections for supply, exhaust air and control assist air),
• Valve discs (working connections, various valves).

E
lec
tri
ca
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nt
er
fa
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Fe
ed o
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ef
t
E
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Valve discs
4-fold
Fe
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n r
ig
ht
Intermediate
feed
Va
lv
e d
is
cs 2
-fo
ld
Va
lv
e d
is
cs 2
-fo
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connection
module on left
connection
module on right
Figure 6: Example of a valve block, schematic
The electric automation system pneumatically forms a complete unit externally. Thanks to the modular design, the
number of internal bus users as well as the power consumption of the valve block can vary. Externally the valve block,
like any electrical module/terminal, provides a standardized electrical interface.
If the configuration of the valve block also includes valves of Type 0461 (5/2-way impulse valve, 5/3-way
valve), a profile rail EN 50022-35 x 15 must be used. In all other cases this profile rail is also recommended.
7.1.1. connection modules / feeds
Feeds in the form of pneumatic connection modules form the fluid interface between supply line and internal supply
structure. The fluid is conveyed from one valve disc to the next via the feed. To ensure that the supply pressure
remains almost constant over the entire route, additional feeds may be required. It is recommended to place an
additional feed after 24 (ME02) or 16 (ME03) valve locations. The use of intermediate feeds also allows segments
to be established if the pneumatic conduits between individual valve discs are sealed.
english
Type 8644