Burkert Type 8045 User Manual
Page 16
16
Installation and wiring
Type 8045
7.5.
Wiring
danger
risk of injury due to electrical voltage.
• Shut down the electrical power source of all the conductors and
isolate it before carrying out work on the system.
• Observe all applicable accident protection and safety regula-
tions for electrical equipment.
• Use a high quality electrical power supply (filtered and
regulated).
• Make sure the installation is equipotential. See chap.
• Use shielded cables with a temperature limit of 80 °C
minimum.
• Do not install the cables near high voltage or high fre-
quency cables; If this cannot be avoided, observe a min.
distance of 30 cm.
• Protect the power supply by means of a 300 mA fuse and
a switch.
• Protect the relays by means of a max. 3 A fuse and a
circuit breaker (depending on the process).
• Do not apply both a dangerous voltage and a safety extra-
low voltage to the relays.
Insert the supplied stopper gasket into the unused cable
gland to ensure the tightness of the device.
If two cables are used in the same cable gland, first insert
the supplied multi-way seal.
To wire the device:
→
Loosen the screw from the lid.
→
Flip the lid.
→
Loosen the 4 screws from the cover of the housing.
→
Remove the cover.
→
Loosen the nuts of the cable glands.
→
Insert the cable through the nut then through the cable gland.
→
Make sure the earth cable coming from the housing and, on a
version with stainless steel sensor, the cable coming from the
flow sensor, are connected as shown in Fig. 15, chap. 7.5.2.
→
Wire acc. to chap. 7.5.1 to 7.5.3.
7.5.1. equipotentiality of the installation
To ensure the equipotentiality of the installation (power supply -
device - fluid):
→
Connect together the various earth spots in the installation to
eliminate the potential differences that may occur between dif-
ferent earthes.
→
Observe faultless earthing of the shield of the power supply
cable, at both ends.
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