3 approvals, 4 information in the internet, 5 system description – Burkert Type 8643 User Manual
Page 10: 1 general description, English, 5system description
10 - 8643
english
4.3 approvals
noTe!
Approvals are found in the Annex to this operating manual.
4.4 Information in the Internet
The operating instructions and data sheet for the Power I/O Box Type 8643
with FOUNDATION Fieldbus activation are found on the Internet under:
The complete documentation is also available on CD which can be ordered
by quoting part no. 804625.
5
sysTem descrIpTIon
5.1 General description
The Power I/O Box Type 8643 with FOUNDATION Fieldbus activation
(hereafter Power I/O Box Type 8643) is used for the activation of binary
signals on the FOUNDATION Fieldbus.
It is suitable for use in potentially explosive atmospheres and has been ap-
proved according to ATEX for use in Zone 1 and 21.
This device is supplied in either an aluminum or polyester housing in protec-
tion class IP65 or as an electronic module in IP20/IP30 for installation in
housings with Ex-e approval or control cabinets.
All cable fittings are found on the bottom.
There are two versions for the various bus concepts:
2-LEAD vERSION
A separate cable is not needed for the Ex-e bus in the 2-lead version due to
the available current of up to 1.5 A.
4-LEAD vERSION
In the 4-lead version, the device is supplied via a separate power supply
source for the Ex-i bus due to the fact that the usable energy from the bus
wiring is extremely limited.
5.1.1 advantages and technical features
advantages of the power I/o Box
Simple and safe installation.
•
Secure galvanic isolation between power supply, bus connection, inputs
•
and outputs.