Burkert 8642 User Manual
I/O-Box with PROFIBUS
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PA Connection
Quickstart
Installation and Operation
GB
Fluid Control Systems
GENERAL INSTRUCTIONS
To ensure that the device functions correctly, and will have a long
service life, please comply with the information in these Operating
Instructions, as well as the application conditions and additional data
given in the data sheet. For more detailed information regarding the
commissioning of a PROFIBUS PA branch, we recommend the
"PROFIBUS PA Commissioning Handbook" of the PNO.
Safety Instructions
• When planning the application of the device, and during its
operation, observe the general technical rules!
• Work on the device should only be carried out by
specialist staff using suitable tools!
• Observe the valid accident prevention and safety
regulations for electrical equipment during the operation,
maintenance and repair of the equipment!
• Always switch off the voltage supply before working on
the system!
• Only use lines fitted with an earth line, and connect the
earth!
• Take suitable measures to prevent unintentional operation
or impermissible impairment!
ATTENTION!
CAUTION ON HANDLING!
COMPONENTS/MODULES LIABLE TO
ELECTROSTATIC DAMAGE!
The device contains electronic components that are sensitive to
electrostatic charging (ESD). These components are
endangered by contact with statically charged persons or
objects. In the worst case they are immediately destroyed or fail
after putting into operation.
Observe the requirements of EN 100 015-1 in order to minimize
or avoid the risk of damage by instantaneous electrostatic
discharge. Make sure also that you do not touch electronic
components when they are under supply voltage.
GENERAL INSTRUCTIONS TECHNIC
Use for the intended purpose
Please observe the notes in these operating instructions
together with the conditions of use and permitted data that are
specified on the rating plate in order that the device will
function perfectly and remain operable for a long time.
On nonobser-vance of these notes and unauthorized
interference with the device, we will refuse all liability and the
warranty on device and accessories will become void!
The device serves exclusively to drive process valves of
types 6520 and 6521 NAMUR. Any different use or use going
beyond this is considered improper use. Bürkert is not liable
for damage resulting from such use. The risk is carried solely
by the user.
General description
• For installation and operation in potentially explosive environments,
observe the relevant national regulations. (in Germany: VDE 0165)
• The device serves exclusively to drive process valves of types
6520 and 6521 NAMUR
- Driving of four type 6520/6521valves (PTB n° Ex-97.D.2089x)
- Connection of two sensors per valve (see table)
• The line resistance to the sensors and valves shall be not more than
20 Ohm for a max. cable length of 30 m.
• Use only shielded cable for connecting the sensors and valves.
Note also that the screening must be connected, e.g. at the front
panel of the housing.
The values of the capacity and inductance are specified in the
conformity certificate. Please observe the instructions of the
Conformity Certificate PTB Nr. EX-97.D.2089X for the supply of the
valve. More information regarding the operation and installation of
the type 6115 (6520) valve can be found in the operating
instructions for these valves.
• The Design Inspection Certificates are to be found in the
Instructions
on the CD.
Operating
Technical data
Field bus interface according to IEC 1158-2
Communication device following the FISCO model
Electrical data
Permitted operating voltage 9 - 24 V
Permitted operating voltage,
intrinsically safe: referring to power
supply device with
– trapezoidal characteristic curve
– linear characteristic curve
Operating current 16.5 mA ± 6 %
Maximum current in case of a fault < 22.5 mA
max. permissible power of the
power supply with intrinsically safe
bus supply
Operating conditions
Permissible temperature range -25 to 60 °C
Climatic test
Insulation class 3
Protection class of housing
Explosion protection to
Conditions of the EMC law fulfilled
Resistance to interference EN 50052-2
Transmitted interference EN 50081-2
We reserve the right to make technical changes without notice!
9 - 15 V
9 - 17,5 V
2 W
DIN IEC Part 2 - 38
exposure 10 cycles à 24 h
IP 65
(when using corresponding screwed fittings)
EN 50020 and EN 50014
II 2 (1) G EEx ia IIC T6
INSTALLATION AND COMMISSIONING
Installation and Commissioning
Preferred fitting position: Attachment screws pointing
downwards!
If EMV screwed fittings are used, position the screens
according to manufacturer's instructions!
On using a Weidmüller plugged connector for PROFIBUS PA,
the following configuration applies:
Positioning dimensions
B
S
On the front panel threads to M20 and M16 are provided; on
the side a thread to M16.
The terminals may only be removed when not under voltage!
The front panel is designed for a maximum of 5 changes.
The fixing screws of the front panel may be tightened with a
maximum of 1.5 Nm.
View onto pin base and pins:
Pin Colour PROFIBUS PA
n.c.
AbluePA-
S black screen
A
BbrownPA+
n.c. not connected
INSTALLATION AND COMMISSIONING
Measures to be taken before installation
Check the connections, voltage and operating pressure!
Ensure that the max. operating data (see name plate) is not
exceeded!
This device complies with the European Community EMC
guideline No. 89/336/EWG.
Observe the installation instructions in order to fulfil the
regulations of this guideline. Connect the screw terminal
TE (technical earth) to the earth potential using a cable that
is as short as possible, or take suitable measures to
prevent undesired electro-magnetic interference affecting
the device.
Connecting cable for TE (technical earth):
- minimal diameter: 2.5 mm²
- maximum length: 30 cm
Electrical connection
Fig.: I/O-Box Type 8642 NAMUR with PROFIBUS PA circuit
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