Burkert Type 8643 - Handbuch (Seite 4)

12
Warranty 5.3.
This document contains no promise of guarantee. Please
refer to our general terms of sales and delivery.
The warranty is only valid if the Power I/O Box Type 8643
is used as intended in accordance with the specified appli-
cation conditions.
The warranty extends only to defects in the Power
I/O Box Type 8643 with PROFIBUS PA con-
nection and its components.
We accept no liability for any kind of collateral
damage which could occur due to failure or mal-
function of the device.
information on the internet 5.4.
Operating instructions and data sheet for the Power I/O
Box Type 8643 with PA connection can be found on the
Internet at:
www.burkert.com Documentation Type
The complete documentation is also available on CD which
can be ordered by quoting part no. 804625.
english 13
sysTem descriPTion 6.
General description 6.1.
The Power I/O Box Type 8643 with PROFIBUS PA con-
nection (stated below as the Power I/O Box Type 8643) is
used to connect binary signals to the PROFIBUS PA.
It is suitable for use in areas where there is a risk of
explosion, authorized according to ATEX for use in Zone
1 and 21.
The device is available either in an aluminium or polyester
housing belonging to protection class IP65.
All cable glands are situated on the underside. There are
two versions of the different bus concepts:
2-wire version
In the 2-wire version a separate cable is not required for
the Ex-e bus on account of the available current up to
1.5 A.
4-wire version
In the 4-wire version the device is supplied for the Ex-i bus
(FISCO) via a voltage source, as the usable energy from
the bus line is severely restricted. However, the connection
to an Ex-e bus is also possible.
english
14
Application area 6.2.
The Power I/O Box Type 8643 is designed for remote use
in an industrial environment, particularly in the areas of the
pharmaceutical industry, petrochemistry and fine chemistry.
It satisfies the conditions for protection class IP65 (in alu-
minium or polyester housing).
Danger!
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!
english 15
If using the Power I/O Box Type 8643 in a control
cabinet, ensure that
the control cabinet is also authorized for use •
in an environment where there is a risk of
explosion,
the control cabinet is large enough for the
•
lost heat to be discharged to the exterior in a
suitable manner,
the internal temperature of the control cabinet
•
does not exceed the allowable operating tem-
perature of the Power I/O Box Type 8643!
english
Type 8643 PA