Burkert 8681 User manual

Quickstart
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Type 8681
Control Head
Steuerkopf
Tête de commande
(24 V DC / AS-i / DeviceNet / 120 V AC / büS/CANopen)

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH, 2010 - 2019
Operating Instructions/Quickstart 1904/05_EU-ML_00810362 / Original DE

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Type 8681
1 THE QUICKSTART ..........................................................................................5
1.1 Definition of the term “device” and “büS” ................................... 5
1.2 Symbols ..............................................................................................5
2 INTENDED USE ................................................................................................6
3 BASIC SAFETY INSTRUCTIONS .............................................................6
4 GENERAL INSTRUCTIONS ........................................................................8
4.1 Contact addresses .......................................................................... 8
4.2 Warranty ............................................................................................. 8
4.3 Information on the Internet .............................................................8
5 STRUCTURE AND FUNCTION..................................................................8
5.1 Manual override ................................................................................ 8
5.2 Structure ............................................................................................ 9
6 TECHNICAL DATA ...........................................................................................9
6.1 Conformity ........................................................................................9
6.2 Standards ...........................................................................................9
6.3 Type label (example) ........................................................................9
6.4 Operating conditions .....................................................................10
6.5 Mechanical data .............................................................................10
6.6 Pneumatic data ...............................................................................10
6.7 Position measuring system data .................................................10
6.8 Electrical data..................................................................................10
7 ASSEMBLY / INSTALLATION .................................................................11
7.1 Safety instructions .........................................................................11
7.2 Assembly ..........................................................................................11
7.3 Pneumatic installation ...................................................................11
7.4 Opening/Closing the housing .....................................................12
7.5 Electrical installation ......................................................................12
8 24 V DC DESIGN .......................................................................................... 13
8.1 Connection options .......................................................................13
8.2 Electrical data..................................................................................13
8.3 Electrical installation (24 V DC) ..................................................14
9 AS-I DESIGN ...................................................................................................16
9.1 Connection options .......................................................................16
9.2 Number of connectable control heads ......................................16
9.3 Bus line length ................................................................................16
9.4 Electrical data..................................................................................16
9.5 Electrical installation (AS-i) ..........................................................17
10 DEVICENET DESIGN ..................................................................................18
10.1 Connection option .......................................................................18
10.2 DeviceNet specification ..............................................................18
10.3 Bus line length ..............................................................................19
10.4 Electrical data ...............................................................................19
10.5 Electrical installation (DVN) .......................................................20
10.6 Network topology .........................................................................21
10.7 Configuring the baud rate and DVN address ........................21
10.8 Configuring process data ..........................................................21
10.9 Safety position of the solenoid valves in the event of a
bus error .........................................................................................22
Table of contents
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Type 8681
11 120 V AC DESIGN ........................................................................................22
11.1 Connection option .......................................................................22
11.2 Electrical data ...............................................................................22
11.3 Electrical installation ....................................................................23
12 BÜS / CANOPEN DESIGN ......................................................................25
12.1 Connection options .....................................................................25
12.2 Electrical data ...............................................................................25
12.3 Electrical installation ...................................................................26
12.4 büS/CANopen specification ....................................................27
12.5 Network configuration .................................................................28
12.6 Network principles .......................................................................28
12.7 Bus line length ..............................................................................28
12.8 Bus error / Safety position of the solenoid valves ................29
12.9 I/O data (cyclic) and parameters (acyclic) .............................29
12.10 Configuring the baud rate and node ID
(büS/CANopen address) ......................................................29
13 POSITION MEASURING SYSTEM .......................................................30
13.1 Teach-In ..........................................................................................30
13.2 Teach reset ....................................................................................30
13.3 Autotune .........................................................................................30
13.4 LED – colour assignments.........................................................30
14 START-UP ......................................................................................................... 31
15 TRANSPORTATION, STORAGE, DISPOSAL ...................................31
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The Quickstart
Type 8681
1 THE QUICKSTART
Keep these instructions in a location which is easily accessible to
every user and make these instructions available to every new owner
of the device.
Important safety information!
Read the Quickstart guide carefully and thoroughly. Study in par-
ticular chapters “2 Intended use” and “3 Basic safety instructions”.
`The Quickstart guide must be read and understood.
The Quickstart guide illustrates installation and commissioning of the
device with examples.
A detailed description of the device can be found in the operating
instructions for Type 8681
The operating instructions can be found on the Internet at:
www.burkert.com (Type / Downloads )
1.1 Definition of the term “device” and
“büS”
In these instructions, the term:
• “device” refers to the control head Type 8681,
• “büS” (Bürkert system bus) refers to the communication bus
developed by Bürkert and based on the CANopen protocol.
1.2 Symbols
The following symbols are used in these instructions.
DANGER!
Warns of an immediate danger!
`Failure to observe the warning will result in fatal or serious injury.
WARNING!
Warns of a potentially dangerous situation!
`Failure to observe the warning may result in serious or fatal injury.
CAUTION!
Warns of a possible danger!
`Failure to observe this warning may result in a moderate or minor
injury.
NOTE!
Warns of damage to property!
Important additional information, tips and recommendations
Refers to information in these operating instructions or in
other documentation.
` Highlights instructions to avoid a danger.
→Designates a procedure which you must carry out.
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Intended use
Type 8681
2 INTENDED USE
Incorrect use of the control head Type 8681 may be dan-
gerous to people, nearby equipment and the environment.
`The control head has been designed for use as actuation of
pneumatically operated process valves and / or for recording the
switching states of these.
`The authorised data, the operating conditions and conditions of
use specified in the contract documents and operating instructions
are to be observed during use.
`In view of the large number of application options, check and, if
necessary, test prior to installation whether the control head is
suitable for the specific application case. Should you have any
questions, please contact your Bürkert Service Centre.
`Use the device only in conjunction with third-party equipment and
components recommended and authorised by Bürkert.
`Any unauthorised reconstructions and changes to the control head
are prohibited for safety reasons.
`Correct transportation, storage and installation as well as careful
operation and maintenance are essential for reliable and fault-free
operation.
`For connecting the control head, use line installations that do not
cause any mechanical stresses.
`Use the device only as intended.
3 BASIC SAFETY INSTRUCTIONS
These safety instructions do not consider any contingencies or incidents
which occur during assembly, operation and maintenance.
The operator is responsible for observing the location-specific safety
regulations, also with reference to the personnel.
DANGER
Danger – high pressure!
`Turn off the pressure and vent the lines before loosening lines
or valves.
Risk of explosion in an explosive atmosphere (explosive
atmosphere only in the event of a fault, since it is Zone 2)!
`Opening the hood or the housing in an explosive atmosphere is
only permitted when the device is isolated!
`Secure the housing with a lead seal to prevent it from being
opened without a tool!
`Activating the DIP switches on the PCB, using the service interface
and the Teach buttons, is not permitted in an explosive atmosphere!
`Layers of dust on the housing may not exceed 5 mm! Lint, con-
ductive and non-conductive dust particles are allowed. The inside
of the housing must not be dirty!
`When wiping the control head, use a damp or anti-static cloth in the
potentially explosive atmosphere to prevent electrostatic charges!
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Basic safety instructions
Type 8681
WARNING!
Risk of electric shock!
`Before reaching into the device or the equipment, switch off the
power supply and secure to prevent reactivation!
`Observe the applicable accident prevention and safety regulations
for electrical equipment!
General hazardous situations.
To prevent injuries:
`Ensure that the system cannot be activated unintentionally.
`Installation and maintenance work as well as operator actions may
only be carried out by authorised and suitably qualified technicians
using the appropriate tools.
`Do not make any unauthorised internal or external changes to the
device.
`After an interruption in the electrical or pneumatic supply, ensure
that the process is restarted in a defined or controlled manner.
`The device may be installed and operated only when in perfect
condition and in consideration of the operating instructions.
`The general rules of technology must be observed for application
planning and operation of the device.
NOTE!
Electrostatic sensitive components/modules!
The device contains electronic components which are susceptible to
electrostatic discharge (ESD). Contact with electrostatically charged
persons or objects may be hazardous to these components.
In the worst case scenario, they will be destroyed immediately or
will fail after start-up.
`Observe requirements according to EN 61340-5-1 to minimise
or avoid the possibility of damage caused by sudden electrostatic
discharge!
`Do not touch electronic components while the supply voltage is
switched on!
NOTE!
Risk of damage to property
`Do not feed the medium connections of the system with liquids
or aggressive or flammable media.
`Do not subject the housing to mechanical loads (e.g. by placing
heavy objects on it or standing on it).
`Do not make any external changes to the housings of the device.
Do not paint housing parts or screws.
`Only use compatible cleaning agents for cleaning the securely
closed control head and always rinse thoroughly with clean water.
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General instructions
Type 8681
4 GENERAL INSTRUCTIONS
4.1 Contact addresses
Germany
Bürkert Fluid Control Systems
Sales Centre
Christian-Bürkert-Str. 13-17
D-74653 Ingelfingen
Phone + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: [email protected]
International
Further contact details can be found on the Internet at:
www.burkert.com
4.2 Warranty
The warranty is only valid if the control head Type 8681 is used as
intended according to the specified application conditions.
4.3 Information on the Internet
Operating instructions and data sheets for Type 8681 as well as
software information can be found on the Internet under “Downloads”
for the respective type or for the ID no. of the device: www.burkert.com
5 STRUCTURE AND FUNCTION
The control head Type 8681 has been designed for use as an actuator
for pneumatically operated process valves and / or for recording the
switching states of these.
For the recording and feedback of the process valve switching positions
to a higher-level control, the control head has been equipped with a
contact-free position measuring system which operates with 3 discrete,
adjustable feedback signals (Teach-In function).
Various pneumatic and electrical connection variants are available.
Positions and status information can be indicated by 3 signal colours.
Further colours are available for the büS/CANopen design.
5.1 Manual override
The control head provides the following as standard:
• A magnetic manual override that is easily accessible from the
outside on the basis of encoded magnetic fields for solenoid valve 1
(connection 2/A1), as well as
• a mechanical manual override accessible when the hood is open
on each equipped solenoid valve.
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Technical data
Type 8681
5.2 Structure
Pneumatic
connections
Shoulder screws (2 x M5) - no sealing function, merely as
protection against being pulled off the hub flange
Electrical
connections
(cable glands)
Lead seal lug
Electronic
module (with
service interface,
terminal strips, DIP,
Teach-In buttons)
Position measuring system with LED
(device status LED (Top LED))
Flow restriction
screws of the sole-
noid valves (SV)
s. “Fig. 3”; up to
3 SVs mounted
Mechanical manual
override at the
SV (red lever) Locking
groove (3 x)
Fig. 1: Structure
6 TECHNICAL DATA
6.1 Conformity
The control head Type 8681 conforms to EU Directives according to
the EU Declaration of Conformity.
6.2 Standards
The applied standards which are used to demonstrate compliance with
EU Directives are listed in the EU Prototype Examination Certificate
and/or the EU Declaration of Conformity.
The specifications on the respective type label apply to the respective
control head. The symbols on the type label indicate the applicable
directives or approvals.
6.3 Type label (example)
Device designation/Type
Device design, number of solenoid
valves
Permitted pressure range
Permitted temperature range CE
Serial number S/N
ID number / Production details
Barcode
In addition to the CE Mark for EU conformity, the type label also shows
symbols for approvals according to ATEX Directives, FM (Factory
Mutual) or UL (for Canada and USA) if these apply to the respective
device.
Further details can be found in the operating instructions for Type 8681.
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Technical data
Type 8681
6.4 Operating conditions
Standard version:
Ambient temp.: -10 ... +55 °C
Degree of protection: IP65 / IP67 according to EN 60529 or
IP69K according to IEC 40050-9
Version for use in an explosive atmosphere, Zone 2:
Ambient temp.: +5 ... +55 °C
Degree of protection: IP64 according to EN 60529 and
requirements EN 60079-0: 2009
When used in an explosive atmosphere (Zone 2), the devices must
be installed in a protected installation location according to
IEC/EN 60079-0.
6.5 Mechanical data
Dimensions: See data sheet
Housing material: Outside: PA, PC, PPO, VA
Inside: ABS, PA, PMMA
Sealing material: Outside: CR, EPDM
Inside: EPDM, FKM, NBR
6.6 Pneumatic data
Control medium: Air, neutral gases: Air, neutral gases
Quality classes according to ISO 8573-1
(5 µm filter recommended)
Dust content Max. particle size 40 µm,
(quality class 7) Max. particle density 10 mg/m3
Water content Max. pressure dew point -20 °C or
(quality class 3) Min. 10 °C below the lowest operating
temperature
Oil content
(quality class X) Max. 25 mg/m3
Temperature range of compressed air: -10 ... +50 °C
Pressure range: 2.5 ... 8 bar
Air flow rate
solenoid valve: 110 IN/min (for deaeration, aeration, ventilation)
(110 IN/min - supplied state
200 IN/min - max. typical flow)
( Q Nn value according to definition for pressure
drop from 7 to 6 bar absolute at +20 °C)
Connections: Intake and exhaust air port G1/4
Working ports G1/8
6.7 Position measuring system data
Stroke range: 0 ... 80 mm
Resolution: ≤ 0.1 mm
Total fault: ± 0.5 mm (when using a suitable target)
6.8 Electrical data
See chapter: “8 24 V DC design”,
“9 AS-I design”,
“10 DeviceNet design”,
“11 120 V AC design”,
“12 büS / CANopen design”.
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Assembly / Installation
Type 8681
7 ASSEMBLY / INSTALLATION
7.1 Safety instructions
DANGER!
Risk of injury due to high pressure in the system!
`Turn off the pressure and vent the lines before loosening lines
or valves.
Risk of explosion in an explosive atmosphere (explosive
atmosphere only in the event of a fault, since it is Zone 2)!
`Opening the hood or the housing in an explosive atmosphere is
only permitted when the device is isolated!
WARNING!
Risk of injury due to electric shock!
`Before reaching into the device or the equipment, switch off the
power supply and secure to prevent reactivation!
`Observe the applicable accident prevention and safety regulations
for electrical equipment!
Risk of injury due to improper assembly!
`Assembly may only be carried out by authorised specialist per-
sonnel and using the appropriate tools.
Risk of injury due to unintentional activation of the system
and uncontrolled restart!
`Secure system against unintentional activation!
`Following assembly, ensure a controlled restart.
7.2 Assembly
For the assembly of the control head Type 8681 to a process valve,
you will require a process valve-specific hub flange as an adapter.
The hub flange must be adapted to the design of the process valve.
→Mount the piston rod with the target on the process valve spindle.
Observe reference dimensions!
→Fasten the hub flange on the process valve. During this, observe
central alignment and sealing conditions!
→Check the secure fit of the sealing rings (in the upper and the
lower groove).
→Mount the control head on the hub flange (infinitely 360° rotatable).
→Secure the control head with the two locking screws (shoulder
screws M5, tightening torque: max. 3.2 Nm) in the middle groove of
the hub flange against unintentional removal (not fixed into position!
– see “Fig. 1” or operating instructions, chapter “Assembly”).
7.3 Pneumatic installation
→Connect the required working connections 2/A1 to 2/A3 (each
according to model) with the corresponding connections on the
process valve - see “Fig. 2” or in the operating instructions for
Type 8681.
→Connect the supply line to supply pressure connection 1/P
(2.5 … 8 bar).
→A silencer has already been mounted on the exhaust air port (3/R)
in the supplied state.
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Assembly / Installation
Type 8681
1/P
Supply pressure
connection
3/R
Exhaust air port
(silencer)
2/A3: SV 3 2/A2: SV 2 2/A1: SV 1
2/A1 ... A3 - working ports of solenoid valves (SV)
Lead seal
lugs at
the housing
Fig. 2: Pneumatic connections
The flow restriction screws R and P
of the solenoid valves (see operating
instructions) are used for setting the air
intake and exhaust for the working ports
(for setting of the control speed of the
process valves).
Fig. 3: Flow restriction screws of the
solenoid valves
R
P
open closed
7.4 Opening/Closing the housing
Opening:
→Remove lead seal if housing is secured.
→Open the plastic hood by turning it anticlockwise (all the way,
approx. 1.5 cm).
Closing:
→Put the plastic hood on the lower part such that the inner “lugs” are
positioned over the locking grooves and the external sealing lugs
are positioned almost over each other. Press the hood completely
over the seal of the lower part (see “Fig. 1”).
→Turn the hood by approx. 1.5 cm clockwise (meaning until the
sealing lugs are positioned over each other).
A lead seal is required on the hood in potentially explosive
atmospheres!
7.5 Electrical installation
See chapter: “8 24 V DC design”,
“9 AS-I design”,
“10 DeviceNet design”,
“11 120 V AC design”,
“12 büS / CANopen design”.
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24 V DC design
Type 8681
8 24 V DC DESIGN
8.1 Connection options
Connection left:
1 x M16 x 1.5 cable gland for
power supply and signals
Connection left:
1 x M16 x 1.5 cable gland with
multipole connection (M12 plug
according to IEC 61076-2-101,
12-pole) on a cable of 8 cm
Connection right:
1 x M16 x 1.5 cable gland for
external initiator
Connection right:
1 x M16 x 1.5 cable gland for
external initiator
8.2 Electrical data
Power supply: 12 ... 28 V DC, residual ripple 10%
Power consumption
(standby current): 30 mA at 24 V DC
Solenoid valves:
Typ. switching capacity 0.9 W (per solenoid valve, for 200 ms
after switching on)
Typ. continuous output 0.6 W (per solenoid valve, from
200 ms after switching on)
Current consumption for
each solenoid valve: 50 mA at 12 V DC
25 mA at 24 V DC
22 mA at 28 V DC
Operating mode: Continuous operation (100% duty cycle)
Central display of the switching statuses:
ca. 42 mA with a power supply of
24 V DC per illuminated display shown
Outputs/Binary
feedback signals: S1 out - S4 out
Design: Normally open contact,
PNP output; short-circuit protection,
Switchable
output current: Max. 100 mA per feedback signal
Input/Proximity switch (external initiator: S4 in):
Power supply: Applied voltage at the control
head - 10%
Current carrying capacity
Sensor supply: Max. 90 mA; short-circuit protection
Design: DC 2 and 3 wire, NO or NC;
PNP output
Inputs valve control (Y1 - Y3):
Signal level - active: U > 10 V, max. 24 V DC + 10%
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24 V DC design
Type 8681
8.3 Electrical installation (24 V DC)
DANGER!
Risk of explosion in an explosive atmosphere (explosive
atmosphere only in the event of a fault, since it is Zone 2)!
`Opening the hood or the housing in an explosive atmosphere is
only permitted when the device is isolated!
WARNING!
Risk of injury due to electric shock!
`Before reaching into the system (except for the Teach-In procedure
in a non-explosive atmosphere) switch off the power supply and
secure it to prevent restarting!
`Observe the applicable accident prevention and safety regulations
for electrical equipment!
Risk of injury due to improper installation!
`Installation may only be carried out by authorised specialist per-
sonnel and using the appropriate tools.
Cable gland:
→Open the housing.
→Prepare the connection cable for signals and power supply as well
as for the external initiator, if necessary.
→Insert cables through the respective cable glands into the interior
of the housing.
→Connect the wires to the terminal strips according to the pin
assignments described in “Fig. 4”.
Connection
with status LED
for solenoid
valve V1
Terminal
strip 1
Service
interface
DIP switches for
colour coding the
Top LED
Terminal strip 2
(external
initiator)
Teach-In
buttons T1-3
Connections
with status LED
for V2, V3
Fig. 4: Electronic module (24 V DC)
Terminal strip 1 Assignment
24 V Power supply 24 V
GND GND
S1 OUT Output position S1
S2 OUT Output position S2
S3 OUT Output position S3
S4 OUT External initiator output S4
Y1 Solenoid valve 1 input V1
Y2 Solenoid valve 2 input V2
Y3 Solenoid valve 3 input V3
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24 V DC design
Type 8681
Terminal strip 2 Assignment
24 V
Power supply 24 V DC for external initiator
S4 IN External initiator input
GND GND external initiator
→Close the housing
→Ensure IP protection (dummy plug)
Cable gland with multipole connection:
Internal cabling work is not required for variants with multipole con-
nection. However, you will require the correspondingly packaged or
assembled cable sets with the following pin assignment:
Pin Designation Assignment
1 24 V Power supply 24 V
2 GND GND
3 S1 OUT Output position S1
4 S2 OUT Output position S2
5 S3 OUT Output position S3
6 S4 OUT External initiator S4 output
7 Y1 Solenoid valve 1 input V1
8 Y2 Solenoid valve 2 input V2
9 Y3 Solenoid valve 3 input V3
10-12 Not assigned
Input and output signals to the higher-level control (PLC):
Pin 9 - Y3
Pin 8 - Y2
12
Pin 6 - S4 out
Pin 7 - Y1
Pin 1 - 24 V
Pin 5 - S3 out
Pin 4 - S2 out 11
Pin 3 - S1 out Pin 2 - GND
10
Fig. 5: Multipole connection 24 V DC
(12-pole circular plug-in connector M12 x 1.0 - male according to
IEC 61076-2-101 — view onto the plug pins)
An external initiator can be connected via the triple terminal strip 2
(see “Fig. 4” or see operating instructions, chapter “Connecting an
external initiator”).
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AS-I design
Type 8681
9 AS-I DESIGN
9.1 Connection options
Connection left:
1 x M16 x 1.5 cable gland with multipole connection (M12 plug
according to IEC 61076-2-101, 4-pole) to an 8 cm or 80 cm
long cable
Connection right:
1 x M16 x 1.5 cable gland for external initiator
9.2 Number of connectable control
heads
In AS interface versions with extended addressing range (A/B slave),
1 master can communicate with 62 slaves.
In AS interface versions with addressing range 31 slaves, a maximum
of 31 control heads can be connected to a bus line (the address range
restriction).
9.3 Bus line length
The bus cable may be a maximum of 100 m long. When designing the
system, consider the length of the round cable leading directly to the
control head (see example calculation in the operating instructions).
9.4 Electrical data
Power supply of the solenoid valves (SVs):
Setting the power supply of the solenoid valves using jumpers on
the AS interface electronic module.
Standard: Via AS-i
29.5 ... 31.6 V DC according to specification;
21.0 ... 31.6 V DC according to specification
Power24
Option: External
(19.2 V DC to
31.6 V DC)
Input/Proximity switch (external initiator: S4 in):
Power supply: Applied AS-i voltage at the
control head - 10%
Current carrying capacity
Sensor supply: Max. 30 mA; short-circuit protection
Design: DC 2 and 3 wire, NO or NC;
PNP output
Inputs: 3 binary feedback signals and
(from master perspective) 1 x external initiator
Outputs (from master perspective) / Solenoid valve:
Typ. switching capacity 0.9 W (per solenoid valve, for 200 ms
after switching on)
Typ. continuous output 0.6 W (per solenoid valve, from 200 ms
after switching on)
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AS-I design
Type 8681
Typ. pull-in current: 30 mA or 0.9 W per sol. valve / 200 ms
Typ. holding current: 20 mA or 0.6 W per sol. valve
Operating mode: Continuous operation (100% duty cycle)
Central display of the switching statuses:
Power consumption: ca. 33 mA or 1 W per illuminated display
shown (at 30.5 V AS-i voltage)
Power supply via AS interface bus:
Max. power consumption
from AS-i: <160 mA (without external initiator)
Power consumption from AS-i
in normal operation: <150 mA (3 active solenoid valves, 1 po-
sition feedback per LED, without external
initiator)
Integrated short-circuit protection
External power supply to the solenoid valves:
Ext. power supply 19.2 V DC to 31.6 V DC
The power supply unit must feature a secure disconnection
according to IEC 60364-4-41. It must conform to the SELV
standard. The ground potential must not have a ground
connection.
Power consumption from external
power supply: <110 mA at 24 V DC (for 200 ms after
switching on of the 3rd solenoid valve)
Power consumption from AS-i for inpu ts
and display (LED): <150 mA (incl. external initiator, feedback
and error display)
Integrated short-circuit protection
9.5 Electrical installation (AS-i)
WARNING!
Risk of explosion in an explosive atmosphere (Zone 2)
`See DANGER note in chapter “8.3” on page 14!
Risk of injury due to electric shock!
`Before reaching into the system (except for the Teach-In procedure
in a non-explosive atmosphere) switch off the power supply and
secure it to prevent restarting! Observe the applicable accident
prevention and safety regulations for electrical equipment!
Risk of injury due to improper installation!
`Installation may only be carried out by authorised specialist per-
sonnel and using the appropriate tools.
Internal cabling work is not required for variants with multipole con-
nection. However, you will require the correspondingly packaged or
assembled cable sets with the following pin assignments.
Pin 2
Pin 3 Pin 1
Pin 4
Fig. 6: Multipole connection AS-i
The jumpers on the electronic module must also be set accordingly to
the power supply of the solenoid valves (SV) – via AS-i bus or exter-
nally – see “9.4” on page 16.
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DeviceNet design
Type 8681
Power supply of the SVs
Pin
(via AS-i)
Assignment
(external)
Assignment Colour
1 AS-i+ AS-i+ brown
2 not assigned GND white
3 AS-i- AS-i- blue
4 not assigned 24 V+ black
An external initiator can be connected via the 3-way terminal strip “INI”
- see operating instructions, chapter “Connecting an external initiator”.
10 DEVICENET DESIGN
10.1 Connection option
Connection left::
1 x M16 x 1.5 cable gland with
multipole connection (M12
plug according to IEC 61076-
2-101, 5-pole) to an 80 cm
long cable
Connection right:
1 x M16 x 1.5 cable gland for
external initiator
10.2 DeviceNet specification
EDS file 8681.EDS
Icons 8681.ICO
Baud rate Factory setting 125 kbit/s
Address Factory setting: 63
Process data 2 static input assemblies (input: from control head
to DeviceNet master/scanner)
1 static output assembly
Inputs 3 discrete feedback signals from the position
measuring system (positions S1 - S3)
1 discrete feedback signal from the external
initiator (S4)
1 analog position signal in mm
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DeviceNet design
Type 8681
Supply via DeviceNet string
(11 ... 25 V DC)
High signal switch level ≥ 5 V
Low signal switch level ≥ 1.5 V
Outputs 3 solenoid valves
Power consumption
from the bus: Max. 5 W, (3 valves with 0.6 W each)
10.3 Bus line length
The maximum total line length (sum of trunk lines and drop lines) of a
network depends on the baud rate.
The maximum total line length (according to the DeviceNet speci-
fication) is as follows for:
Baud rate Thick cable Mid cable Thin cable
125 kbit/s 500 m 300 m 100 m
250 kbit/s 250 m 250 m 100 m
500 kbit/s 100 m 100 m 100 m
The maximum drop line length is as follows for:
Baud rate Drop line Sum (in the network)
125 kbit/s 6 m 156 m
250 kbit/s 6 m 78 m
500 kbit/s 6 m 39 m
10.4 Electrical data
Power supply: 11 … 25 V DC (according to
specification)
Max. power consumption: <200 mA at 24 V DC (200 ms after
switching on of the solenoid valves)
Input / Proximity switches (external initiator: S4 in):
Power supply: Via DeviceNet power supply - 10%
Current carrying capacity
sensor supply: Max. 30 mA
Short-circuit protection
Design: DC 2 and 3 wire,
normally open contact,
PNP output
Input current 1 signal: ISensor > 6.5 mA, limited
internally to 10 mA
Input voltage 1 signal: USensor > 10 V
Input current 0 signal: ISensor < 4 mA
Input voltage 0 signal: USensor < 5 V
Inputs (from master perspective) / Binary or analog feedback
signals:
The recovery of the 3 valve positions reported back in binary format
or the analog position signal is described in the operating instruc-
tions in chapter “Position measuring system”.
Outputs (from master perspective) / Solenoid valves:
Typ. switching capacity 0.9 W (per solenoid valve, for 200 ms
after switching on)
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20
DeviceNet design
Type 8681
Typ. continuous output 0.6 W (per solenoid valve, from
200 ms after switching on)
Current consumption for
each solenoid valve: 50 mA at 12 V DC
25 mA at 24 V DC
22 mA at 28 V DC
Power reduction Integrated via DeviceNet interface
electronics
Typ. pull-in current 120 mA / 200 ms
(3 valves)
Typ. holding current 100 mA at 24 V DC
(3 valves)
Operating mode Continuous operation (100% duty cycle)
Central display of the switching statuses:
Power consumption from
DeviceNet at 24 V DC Approx. 42 mA or 1 W per illuminated
display shown
10.5 Electrical installation (DVN)
DANGER!
Risk of explosion in an explosive atmosphere (explosive
atmosphere only in the event of a fault, since it is Zone 2)!
`Opening the hood or the housing in an explosive atmosphere is
only permitted when the device is isolated!
WARNING!
Risk of injury due to electric shock!
`Before reaching into the system (except for the Teach-In procedure
in a non-explosive atmosphere) switch off the power supply and
secure it to prevent restarting! Observe the applicable accident
prevention and safety regulations for electrical equipment!
Risk of injury due to improper installation!
`Installation may only be carried out by authorised specialist per-
sonnel and using the appropriate tools.
Internal cabling work is not required for variants with multipole con-
nection. However, you will require the correspondingly packaged or
assembled cable sets with the following pin assignment:
Pin 4: CAN_H
Pin 5: CAN_L
Pin 1: Drain
Pin 3: V–
Pin 2: V+
View of plug from the front onto the pins:
Fig. 7: Multipole connection DeviceNet
Pin Assignment Colour
1 Drain (shielding)
2 V+ red
3 V- black
4 CAN_H white
5 CAN_L blue
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