Burkert Type 8644 - Manual (Page 26)

22 - 8644/phoenix
S
YSTEM
D
ESCRIPTION
VALVE BLOCK
The valve block is composed of the following modules:
• Connector modules/supply units (collective ports for supply, exhaust and auxiliary control air)
• Valve units (service ports, miscellaneous vales)
Viewed from the outside, the pneumatic automation system represents a closed electrical unit. Owing to
the modular construction, the number of internal bus participants and the current consumption of the valve
block may vary. The valve block and each electrical module/terminal provide a standardized electrical
interface to the outside.
Example of a valve block, schematic
Feeders in the form of pneumatic connector modules form the fluidic interface between the supply line and
the internal supply structure. The fluid is passed on via the feeder from one valve unit to the next. In order
that the supply pressure remains almost constant over the entire path, additional feeders may be
necessary. It is recommend to insert a feeder after 24 (ME02) or 16 (ME03) valve positions. The use of
intermediate feeders also enables segments to be built up when the pneumatic channels are closed
between individual valve units.
Connector modules / feeders
Schematic
representation of supply
Supply units
left
Electrical interface
Connector
module left
8-fold valve
units
Intermediate
supply
2-fold valve units 2-fold valve units
Connector
module right
Electrical interface
Supply unit
right
Electr. connector
module
Pneumatic
supply module
Connector
module left
Pneumatic
supply module
Intermediate
supply
Electr. connec-
tor module
Pneumatic
supply module
Connector
module right
Electrical
1:1 shunting