Burkert 8605 Series User manual

Operating Instructions
Type 8605
Digital Control Electronics for Proportional Valves

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2007 - 2020
Operating Instructions 2001/06_EU-EN_00805613 / Original DE

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Contents
1. OPERATING INSTRUCTIONS ........................................................................................................................................................5
1.1. Symbols ......................................................................................................................................................................................5
1.2. Definition of Term “Device” ...............................................................................................................................................5
2. INTENDED USE ....................................................................................................................................................................................6
3. BASIC SAFETY INSTRUCTIONS .................................................................................................................................................7
4. GENERAL INFORMATION ................................................................................................................................................................8
4.1. Contact address .....................................................................................................................................................................8
4.2. Warranty ......................................................................................................................................................................................8
4.3. Information on the Internet ...............................................................................................................................................8
5. PRODUCT DESCRIPTION ...............................................................................................................................................................9
5.1. Field of Application ...............................................................................................................................................................9
5.2. General Description ..............................................................................................................................................................9
5.3. Form of the Device ................................................................................................................................................................9
5.3.1. Type 8605 Cable plug version ............................................................................................................... 9
5.3.2. Type 8605 DIN rail version ....................................................................................................................10
6. TECHNICAL DATA .............................................................................................................................................................................11
6.1. Operating Conditions ........................................................................................................................................................11
7. CONFIGURATION AND FUNCTION ........................................................................................................................................12
7.1. Operating and Display Elements ................................................................................................................................12
7.1.1. Operating unit ..........................................................................................................................................12
7.1.2. LED’s during operation without operating unit .................................................................................13
7.2. Basic function .......................................................................................................................................................................13
7.3. Adjustment to the Valve and Application Data ...................................................................................................14
8. INSTALLATION ...................................................................................................................................................................................16
8.1. Safety instructions .............................................................................................................................................................16
8.2. Electrical connections ......................................................................................................................................................16
Digital Control Electronics Type 8605
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8.2.1. Cable plug version ..................................................................................................................................16
8.2.2. DIN rail version .........................................................................................................................................18
9. CONFIGURATION .............................................................................................................................................................................20
9.1. Operating modes ................................................................................................................................................................20
9.2. Basic settings .......................................................................................................................................................................20
9.3. Menu of the configuration mode ................................................................................................................................21
9.3.1. InP (Input) - Selection of the input signal ..........................................................................................22
9.3.2. Out (Output) - Valve settings ...............................................................................................................22
9.3.3. VAdJ (Valve adjust) - Fine tuning of the valve frequency ...............................................................25
9.3.4. AdJ (Adjust) - Adaptation of the coil current ....................................................................................26
9.3.5. dELY (Delay) - Ramp function ..............................................................................................................27
9.3.6. Cut (Cut off) - Zero point cut off .........................................................................................................28
9.3.7. PArA (Parameter) - Controller setting ................................................................................................29
9.3.8. SPOS (Safe position) - Setting of the safety position ...................................................................29
9.3.9. dAtA (Data) - Upload and Download of parameters between the operating unit and the
basic device ..............................................................................................................................................30
9.3.10. END ............................................................................................................................................................................30
9.4. Factory Settings of the Control Electronics .........................................................................................................31
10. MAINTENANCE ..................................................................................................................................................................................32
10.1. Safety Instructions .............................................................................................................................................................32
10.2. Service ......................................................................................................................................................................................32
11. SPARE PARTS ....................................................................................................................................................................................33
11.1. Ordering charts: Device variants ................................................................................................................................33
11.2. Accessories ............................................................................................................................................................................34
12. PACKAGING, TRANSPORT ..........................................................................................................................................................35
13. STORAGE ..............................................................................................................................................................................................35
13.1. Decommissioning ...............................................................................................................................................................35
13.2. Restarting ................................................................................................................................................................................35
14. DISPOSAL ............................................................................................................................................................................................36
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Operating Instructions
1. OPERATING INSTRUCTIONS
The operating instructions describe the entire life cycle of the device. 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.
WARNING!
The operating instructions contain important safety information!
Failure to observe these instructions may result in hazardous situations.
• The operating instructions must be read and understood.
1.1. Symbols
DANGER!
Warns of an immediate danger!
• Failure to observe the warning may result in a fatal or serious injury.
WARNING!
Warns of a potentially dangerous situation!
• Failure to observe the warning may result in serious injuries or death.
CAUTION!
Warns of a possible danger!
• Failure to observe the warning may result in moderately serious or minor injuries.
NOTE!
Warns of damage to property!
• Failure to observe the warning may result in damage to the device or the equipment.
Designates additional significant information, tips and recommendations.
Refers to information in these operating instructions or in other documentation.
→designates a procedure which you must carry out.
1.2. Definition of Term “Device”
The term “device” used in these instructions always stands for the electromagnetic positioner type 8605.
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Intended Use
2. INTENDED USE
Non-intended use of the Type 8605 may be a hazard to people, nearby equipment and the environment.
• The device is designed for controlling Bürkert proportional valves.
• The device must not be exposed to direct sunlight.
• Do not use the device outdoors.
• To ensure that the device functions perfectly, set the PWM frequency which is suitable for the valve. A table
of set values can be found on the Bürkert homepage www.burkert.com → Type 8605.
• Use according to the authorized data, operating conditions and conditions of use specified in the contract
documents and operating instructions. These are described in the chapter entitled “6. Technical Data”.
• 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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Basic Safety Instructions
3. 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.
Danger – high pressure!
• Before loosening the lines and valves, turn off the pressure and vent the lines.
Risk of electric shock!
• Before reaching into the device or the equipment, switch off the power supply and secure to prevent
reactivation!
• Observe applicable accident prevention and safety regulations for electrical equipment!
There is a risk of injury when the pressure drops in the system!
• Avoid pressure drops!
• Design the pressure supply system with as large a volume as possible, even with upline devices such as e. g.
pressure regulators, air conditioners, shut-off valves.
General hazardous situations.
To prevent injury, ensure that:
• That the system cannot be activated unintentionally.
• Installation and repair work may be carried out by authorised technicians only and with the appropriate tools.
• After an interruption in the power supply or pneumatic supply, ensure that the process is restarted in a defined
or controlled manner.
• The device may be operated only when in perfect condition and in consideration of the operating instructions.
• The general rules of technology apply to application planning and operation of the device.
NOTE!
Electrostatic sensitive components / modules!
The device contains electronic components which react sensitively to electrostatic discharge (ESD). Contact with
electrostatically charged persons or objects is hazardous to these components. In the worst case scenario, they
will be destroyed immediately or will fail after start-up.
• Observe the requirements in accordance with EN 61340-5-1 and 5-2 to minimise or avoid the possibility of
damage caused by sudden electrostatic discharge!
• Do not touch live electronic components!
The Type 8605 was developed with due consideration given to the accepted safety rules and are state-of-
the-art. Nevertheless, dangerous situations may occur.
Failure to observe this operating manual and its operating instructions as well as unauthorized tampering
with the device release us from any liability and also invalidate the warranty covering the devices and
accessories!
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General Information
4. GENERAL INFORMATION
4.1. Contact address
Germany
Bürkert Fluid Control Systems
Sales Center
Chr.-Bürkert-Str. 13-17
D-74653 Ingelfingen
Tel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: [email protected]
International
Contact addresses can be found on the final pages of the printed operating instructions.
And also on the Internet at:
www.burkert.com
4.2. Warranty
The warranty is only valid if the device is used as authorized in accordance with the specified application conditions.
4.3. Information on the Internet
Operating instructions and data sheet for Type 8605 can be found on the Internet at:
www.burkert.com
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Product description
5. PRODUCT DESCRIPTION
5.1. Field of Application
The Control Electronics, Type 8605, is designed for continuous operation in industrial environments, in particular in
the fields of open-loop and closed-loop control engineering.
5.2. General Description
The Digital Control Electronics for Proportional Valves, Type 8605 (hereinafter referred to as Control Electronics,
Type 8605) controls all Bürkert proportional valves with a max. current in the range from 40 to 2000 mA.
It transforms an external standard signal into a pulse-width modulated voltage signal (PWM) that is supplied to the
solenoid coil of the proportional valve.
A given value of the average coil current is thereby assigned to each value of the input signal. The proportional
opening of the valve can be set via the coil current.
5.3. Form of the Device
The Control Electronics is available in two forms.
5.3.1. Type 8605 Cable plug version
Figure 1: Type 8605 Cable plug version
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Product description
Plug-in version on valves with connector pattern A:
e. g. types 2832, 2833, 2834, 2835, 2836,
2853,
2863, 2865,
2873, 2875
6022, 6023, 6024,
6223.
The operating unit can be removed after the setting process. During operation of the Control Electronics 8605 in
cable plug version without operating unit, the operating status is indicated by two LED’s.
Device variants:
• Variant 1 for valves with a max. current from 200 to 1000 mA
• Variant 2 for valves with a max. current from 500 to 2000 mA
5.3.2. Type 8605 DIN rail version
Figure 2: Type 8605 DIN rail version
Separate electronics in housing for DIN rail mounting to DIN EN 50022. This form is suitable for all proportional
valves in the indicated current range. The operating unit cannot be removed.
Device variants:
• Variant 1 for valves with a max. current from 40 to 220 mA
• Variant 2 for valves with a max. current from 200 to 1000 mA
• Variant 3 for valves with a max. current from 500 to 2000 mA
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Technical Data
6. TECHNICAL DATA
6.1. Operating Conditions
WARNING!
The Type 8605 is not designed for use outdoors!
• Do not use the Type 8605 outdoors and avoid heat sources which may result in the permitted temperature
range to be exceeded.
Power supply 12...24V DC ± 10%
Residual ripple 5 %
Power consumption ca. 1 W
Output current (on the valve) max. 2 A
Operating temperature -10 ... 60º C / 14 ...140ºF
Interference resistance to EN50082-2
Emission to EN50081-2
Current range, depending
on the version for valves 40 ... 220 mA,
200 ... 1000 mA,
500 ... 2000 mA
Standard signal input
Voltage (0 ... 5, 0 ... 10 V) input impedance > 20 kW
Current (0 ...20, 4 ... 20 mA) input impedance <200 W
Housing: DIN rail version
Degree of protection IP40 (DIN EN 60529)
Materials Polyamide / PBT
Dimensions LxBxH: 97x27x57 mm
Housing: Cable plug version
Degree of protection IP65 (DIN EN 60529)
Materials Polyamide / PC
Dimensions LxBxH: 70x32x42.5 mm
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Configuration and Function
7. CONFIGURATION AND FUNCTION
7.1. Operating and Display Elements
7.1.1. Operating unit
The operating unit consists of a LCD and keys. It is used for displays and settings of the Control Electronics, Type
8605.
Unit of the displayed value
(s, Hz, %, mA, V)
LCD
Lower limit
= active
= not active
Setpoint = Setpoint
(of the coil current)
Process value = Actual value
(of the coil current)
Upper limit
Figure 3: Operating unit
Key assignment:
Key Display mode Configuration
mode
Selected and confirmed menu item
Switch over the display
value
PV [mA] process value
PV [%] process value
SP [%] setpoint
TV [%] duty cycle
Scroll up
(selection)
Increment (increase)
numerical values
Scroll down
(selection)
Decrement (decrease)
numerical values
3 sec
Enter configuration mode
Confirm the
selected menu item
Select and deselect the individual menu
items
Switch between
main-menu and
sub-menu items
e. g.: Out-VALV
Confirm set values
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Configuration and Function
7.1.2. LED’s during operation without operating unit
During operation of the Control Electronics 8605 without operating unit, the operating status is indicated by two LED’s.
LED green: Device in operation
LED yellow: Current through valve
Figure 4: LED’s on version without operating unit
7.2. Basic function
The Control Electronics, Type 8605, is suitable for the control of all Bürkert proportional valves with a max. current
in the range from 40 to 2000 mA. It transforms an external standard signal into a pulse-width modulated voltage
signal (PWM) that is supplied to the solenoid coil of the proportional valve (see “Figure 5: Basic function of the
Control Electronics, Type 8605”). A given value of the average coil current is thereby assigned to each value of the
input signal. The proportional opening of the valve can be set via the coil current.
Loadp1
0 ... 5/10 V
0/4 ... 20 mA
Standard
Figure 5: Basic function of the Control Electronics, Type 8605
0 to 5 V, 0 to 10 V, 0 to 20 mA or 4 to 20 mA can be set as standard signals.
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Configuration and Function
Due to the inductivity of the coil, the rectangular time curve of the PWM voltage signals is not transformed into a
corresponding current curve; instead the coil current has a sawtooth like „rounded“ time curve (see “Figure 6: Time
response of PWM voltage signal and coil current”). The mean (effective) coil current over time depends on the pulse
duty factor τ of the voltage signal.
τ = ton /(ton+ toff)
The curve of the coil current in the cycle of the PWM frequency generates a proportional change in the magnetic
force acting on the armature and hence, with an appropriate choice of this frequency (see chapter “7.3. Adjustment
to the Valve and Application Data”), a steady slight movement of the armature about its momentary equilibrium
position (dither movement). This avoids static friction effects at the bearing points.
toff ton
t
U
I
Figure 6: Time response of PWM voltage signal and coil current
Due to the intrinsic heating of the coil and the associated large changes in resistance of the winding, the coil current
and hence the opening of the valve with a fixed pulse duty factor do not remain constant. An internal current control
system serves to compensate these thermal effects by corresponding tracking of the pulse duty factor.
7.3. Adjustment to the Valve and Application Data
The working range of a valve in a particular application depends greatly on its nominal size and the prevailing pressure
conditions.
In order to adapt the working range optimally to the range of the control signal, the key values for the effective coil
current are set via the operating unit in such a way that:
• the opening of the valve starts at a current value slightly above the lower key value (I1) and
• the full flow rate is achieved at a current value slightly below the upper key value (I2).
The lower key value is the current controlled at the lowest value of the standard signal (0 V, 0 mA or 4 mA).
The upper key value is obtained at the maximum value of the standard signal (5 V, 10 V or 20 mA).
Between the two key values, the effective coil current has a linear relationship to the input signal (see “Figure 7:
Current over standard signal”)
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Configuration and Function
I2
I1
I
2 % 100 %
Standard signal
Figure 7: Current over standard signal
The working range can also be scaled using the key values I1 and I2 in such a way that only a part of the full opening
of the valve is covered over the full range of the standard signal. In particular the flow rate range can be limited to a
smaller value than the valve would permit under the given pressure conditions.
The zero point cut-off guarantees the leak-tight closing of the valve at input signals below a given threshold of the
input signal (e.g. < 2 % of the limit value). In this case at values below this threshold, the coil current is set - in
deviation from the line shown in “Figure 7: Current over standard signal” - to zero so that the full force of the return
spring of the valve acts as a closing force.
The zero point cut-off can be optionally activated or deactivated.
A ramp function serves to attenuate sudden changes in the input signal and to transform them into an adjustable ramp
(time constant 0 to 10 s) (see “Figure 8: Ramp function”). This is expedient for applications in which sudden changes
in the fluidic controlled variable are undesirable. The ramps can be set separately for positive and negative jumps.
The frequency of the PWM signal must be adapted to the valve used.
t
Standard signal
Current
Figure 8: Ramp function
If digital communication with a higher-level controller is required, the “büS version for proportional valves” must be
used. This is available separately (always without control unit!) and cannot be retrofitted with an existing standard
digital control for Type 8605 Proportional Valves (see “11.1. Ordering charts: Device variants”).
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Installation
8. INSTALLATION
8.1. Safety instructions
DANGER!
Risk of injury from high pressure in the equipment!
• Before loosening the lines and valves, turn off the pressure and vent the lines.
Risk of injury due to electrical shock!
• Before reaching into the device or the equipment, switch off the power supply and secure to prevent
reactivation!
• Observe applicable accident prevention and safety regulations for electrical equipment!
WARNING!
Risk of injury from improper installation!
• Installation may be carried out by authorised technicians only and with the appropriate tools!
Risk of injury from unintentional activation of the system and an uncontrolled restart!
• Secure system from unintentional activation.
• Following assembly, ensure a controlled restart.
8.2. Electrical connections
DANGER!
Risk of injury due to electrical shock!
• Before reaching into the device or the equipment, switch off the power supply and secure to prevent
reactivation!
• Observe applicable accident prevention and safety regulations for electrical equipment!
8.2.1. Cable plug version
The electrical connection of the Controller Type 8605 in cable plug version is made via a 4-pin terminal strip inside
the device.
Cable:
• Diameter 6 ... 8 mm
• Cross-section max. 0.75 mm²
• Cable connections Cable gland or plug connector M12
4-pin
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Installation
12...24 V DC GND
Standard signal (-)
Standard signal (+)
Figure 9: Terminal strip connection
12 . 24 V DC
GND Standard signal (-)
Standard signal (+)
Figure 10: Plug connector connection
NOTE!
Ensure proper seating of the valve when screwing onto the valve (cable plug version)
Do not tighten the screw M3 too tightly (max. 0.3 Nm), as otherwise the housing will be deformed and proper
operation of the keys will no longer be possible.
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Installation
Tighten screw M3 to max. 0.3 Nm
Figure 11: Installation of the cable plug version on the valve
8.2.2. DIN rail version
The electrical connection of the Controller Type 8605 in DIN rail version is made via terminal strips.
Terminal strip Cable cross-section
2-pin for valve max. 1.5 mm²
4-pin for voltage supply and standard signal max. 1.5 mm²
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Installation
1
2
5
6
3
4
Figure 12: Terminal strip connection
Legend:
1. 12...24 V DC
2. GND
3. Standard signal (-)
4. Standard signal (+)
5. Valve
6. Valve
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Configuration
9. CONFIGURATION
WARNING!
Danger may result from improper use!
Improper use can result in personal injury or damage to the device.
• The Control Electronics, Type 8605 may only be operated by qualified personnel.
NOTE!
Carry out the fluidic and electrical installation before starting the configuration.
9.1. Operating modes
The Control Electronics can be operated in two modes:
• Display mode
• Configuration mode
After switching on the operating voltage, the Control Electronics, Type 8605 is in display mode.
3s
InP
Out
dELY
…
dAtA
End
Configuration mode
Display mode
Figure 13: Switching between display and configuration mode
9.2. Basic settings
Switch to the configuration mode to make the basic settings.
→Hold the Enter key depressed for 3 seconds.
InP, the first menu item of the configuration menu, appears on the display.
→Press the Enter key to make settings in the menu item InP.
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