Burkert Type 8643 - Handbuch (Seite 8)

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installation instructions 8.2.
note!
The allowable technical data must not be exceeded. •
Preferred installation position: •
Cable glands face downwards!
The cable glands on the housing have a metric thread.
•
Use only shielded lines to supply the bus! •
Place the bus line shields on the designated screw •
terminals as short as possible!
When the work is complete, carefully close the
•
housing again!
This device complies with the EMC Directive of
the Council of the European Union No. 2004/108/
EG. Follow the installation instructions to satisfy
the conditions of this directive.
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cable glands 8.3.
Warning!
Danger of explosion!
No explosion protection if cable glands are defective or
wrong.
Replace defective cable glands only with Ex-autho- •
rized (EEx e II) cable glands with adequate application
temperature range (see Appendix / Type Examination
Certificate).
At the factory all cable glands are sealed with a •
plug (protection class IP65).
Seal all unused cable glands with a plug to
•
maintain IP protection (IP65).
english
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M16x1.5 potential equalisation PA
(with plastic housing)
4 black M20x1.5 cable glands bus and power
supply
8 blue M20x1.5 cable glands for intrinsically
safe circuits (sensor/actuator outputs)
Cable glands on the metal housing Fig. 5:
The housing features eight blue cable glands for the intrin-
sically safe circuits and four black glands for the bus and
power supply with increased safety.
The bus and power supplies each have two M20x1.5
glands to loop through the supply lines.
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For sensors and actuators each output (with two sensors)
has an M20x1.5 cable gland.
Devices with plastic housing have an M16x1.5 cable gland
for the internal earth connection (PA).
Devices with metal housing (e.g. aluminium) have an earth
connection on the outside of the housing.
electrical connections 8.4.
safety instructions 8.4.1.
note!
Incorrect polarity!
No function if reverse polarity.
Pay attention to the polarity of the terminals! •
The device is protected against polarity reversal. •
english
Type 8643 PA