Burkert Type 8643 - Handbuch (Seite 2)

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3. inTended use
Unauthorized use of the Power I/O Box Type 8643
with PROFIBUS PA connection can be dangerous to
people, nearby equipment and the environment.
The device is designed as a valve and sensor connec- •
tion. Only sensors and valves may be connected which
comply with the technical specifications.
During use observe the authorized data, the operat-
•
ing conditions and conditions of use specified in the
contract documents and operating instructions, as
indicated in the EC-Type Examination Certificate (see
Appendix).
The device may be used only in conjunction with third-
•
party devices and components recommended and
authorized by Bürkert.
Correct transportation, correct storage and installation
•
and careful use and maintenance are essential for reli-
able and faultless operation.
Use the device only as intended.
•
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explosion protection approval 3.1.
Any unauthorized changes to the Power I/O Box Type
8643 with PROFIBUS PA connection or to components
invalidate the explosion protection approval.
Predictable misuse 3.2.
Do not subject the housing of the Power I/O Box Type
8643 to mechanical loads (e.g. by placing objects on it or
standing on it).
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4. bAsic sAfeTy
insTrucTions
These safety instructions do not make allowance for any
contingencies and events which may arise during the •
installation, operation and maintenance of the devices.
local safety regulations – the operator is responsible for
•
observing these regulations, also with reference to the
installation personnel.
Hazardous if used in explosion-risk area
Risk of explosion from electrical voltage!
The Power I/O Box Type 8643 is designed as ignition
protection type Ex-e (increased safety).
Before working on non-intrinsically safe circuits of •
the Power I/O Box Type 8643, always switch off the
operating voltage of the system!
Danger of explosion due to internal charging of the
Power I/O Box Type 8643!
When the power supply to the Power I/O Box Type 8643
is switched off, the internally stored charge will not be
completely dissipated for 4 minutes.
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To prevent an explosion, switch off the power supply
before connecting or disconnecting Ex-e terminals.
Do not remove the cover from the connection termi- •
nals for Ex-e switching circuits until the connected
Ex-e circuits have been disconnected from the power
supply for longer than 4 minutes.
If using the 2-wire version in potentially explosive
•
areas, do not connect any cable to the Power 24 V
supply terminals!
Danger of explosion if the allowable ambient tem-
perature ranges are exceeded!
Observe the respective ambient temperature range •
which is based on the type designation (e.g. 8643-2-
AL-KS-F-I/O), according to the table in the EC-Type
Examination Certificate (see Appendix / Type Examina-
tion Certificate).
Danger of explosion due to unauthorized combi-
nation of the ignition protection types!
Due to unauthorized combination of the ignition pro-
tection types, the device is not suitable for use in the
explosion-risk area. If the device is nevertheless used in
this area, there is a danger of explosion!
If the bus supply of the 4-wire version of the device •
was operated once in ignition protection type of
increased safety (e), the bus supply may no longer be
intrinsically safe in the ignition protection type (i)
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Type 8643 PA