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Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 3280, 3285
2-way motor valve
2-Wege-Motorventil
Vanne motorisée 2 voies
Page 2
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2015-2019 Bürkert Werke GmbH & Co. KG
Operating Instructions 1902/07_EU-ML_00810387 / Original DE
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Contents
1 OPERATING INSTRUCTIONS ........................................................................................................................................................5
1.1 Symbols ......................................................................................................................................................................................5
1.2 Definition of terms .................................................................................................................................................................5
2 AUTHORIZED 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 Intended use .............................................................................................................................................................................9
5.2 Properties ...................................................................................................................................................................................9
5.3 Structure and function .....................................................................................................................................................10
5.3.1 Electromotive seat valve Type 3280 ..............................................................................................10
5.3.2 Electromotive disk valve Type 3285 ...............................................................................................10
5.4 Device versions ....................................................................................................................................................................11
5.4.1 Electric control .................................................................................................................................... 11
6 TECHNICAL DATA .............................................................................................................................................................................14
6.1 Conformity ..............................................................................................................................................................................14
6.2 Standards ................................................................................................................................................................................14
6.3 Operating conditions ........................................................................................................................................................14
6.4 Type label ................................................................................................................................................................................15
6.5 Mechanical data ...................................................................................................................................................................15
6.6 Electrical data .......................................................................................................................................................................16
6.6.1 Derating ................................................................................................................................................18
6.7 Fluidic data .............................................................................................................................................................................19
7 INSTALLATION ...................................................................................................................................................................................20
Motor valve Type 3280 and 3285
Type 3280, 3285
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Type 3280, 3285
7.1 Fluid installation ..................................................................................................................................................................20
7.1.1 Installation area for cartridge body .................................................................................................21
7.1.2 Installation of the motor valve with cartridge body ..................................................................... 21
7.2 Electrical installation .........................................................................................................................................................23
7.2.1 Pin assignment for the on-off valve, circular connector M12, 8-pole ....................................24
7.2.2 Pin assignment for the control valve, circular connector M12, 8-pole .................................. 24
7.2.3 Pin assignment for the positioner ..................................................................................................25
7.2.4 Pin assignment for process controller ...........................................................................................26
7.3 DIP switch settings (analog version only) ............................................................................................................. 27
7.3.1 Setting the DIP switch for Type 3280 and Type 3285 ..............................................................28
7.4 Accepting and saving SIM card data (digital version only) ..........................................................................32
7.5 LED display .............................................................................................................................................................................33
7.5.1 Display elements standard ............................................................................................................... 33
7.5.2 Display elements NAMUR NE 107 ................................................................................................33
8 START-UP .............................................................................................................................................................................................35
8.1 Functions of the standard device ...............................................................................................................................35
8.2 Functions of the positioner and process controller version ........................................................................36
8.3 Setting options .....................................................................................................................................................................38
8.3.1 Setting options for running positioner and process controller ................................................ 38
8.3.2 Setting options for running process controller ............................................................................42
8.3.3 Other settings .....................................................................................................................................44
9 MAINTENANCE, TROUBLESHOOTING .................................................................................................................................45
9.1 Maintenance ..........................................................................................................................................................................45
9.2 Cleaning ...................................................................................................................................................................................45
9.3 Troubleshooting ...................................................................................................................................................................45
10 SPARE PARTS ....................................................................................................................................................................................47
10.1 Accessories ............................................................................................................................................................................47
11 PACKAGING AND TRANSPORT ...............................................................................................................................................48
12 STORAGE ..............................................................................................................................................................................................48
13 DISPOSAL ............................................................................................................................................................................................48
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Operating instructions
Type 3280, 3285
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.
Important safety information.
Read the operating instructions carefully and thoroughly. Study in particular the chapters entitled “Basic safety
instructions” and “Authorized use”.
▶ 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 this warning may result in a moderate or minor injury.
NOTE!
Warns of damage to property.
• Failure to observe the warning may result in damage to the device or the equipment.
Indicates important additional information, tips and recommendations.
Refers to information in these operating instructions or in other documentation.
▶ designates instructions for risk prevention.
→ Designates a procedure which you must carry out.
1.2 Definition of terms
In these instructions the term "device" always refers to the 2-way motor valve Type 3280 and 3285.
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Authorized use
Type 3280, 3285
2 AUTHORIZED USE
Non-conforming use of the motor valve Type 3280 and 3285 may be a hazard to people, nearby
equipment and the environment.
▶ The motor valve is designed for controlling the flow rate of liquid and gaseous media.
▶ Do not use the device outdoors.
▶ Do not expose the valve to direct sunlight.
▶ Use Type 3280 and 3285 only in conjunction with third-party devices and components recommended and
authorized by Bürkert.
▶ The device must be used in compliance with the characteristics and commissioning and use conditions speci-
fied in the contractual documents and in the user manual.
▶ Use the motor valve only when in perfect condition and always ensure proper storage, transportation, installa-
tion and operation.
▶ Only use the device as intended.
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Basic safety instructions
Type 3280, 3285
3 BASIC SAFETY INSTRUCTIONS
These safety instructions do not make allowance for any
• contingencies and events which may arise during the assembly, operation, and maintenance.
• local safety regulations – the operator is responsible for observing these regulations, also in relation to the installation personnel.
Risk of injury from high pressure.
▶ Before loosening lines and valves, cut off the pressure and deaerate or drain lines.
Risk of injury due to electrical shock.
▶ Before working on the system or device, switch off and isolate the power supply to prevent reactivation of the
device.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
Risk of burns or risk of fire if used for a prolonged duty cycle through hot device surface.
▶ Keep the device away from highly flammable substances and medium and do not touch with bare hands.
General hazardous situations.
To prevent injuries:
▶ Do not use Type 3280 and 3285 in potentially explosive areas.
▶ Do not subject the actuator housing and actuator cover to mechanical loading.
▶ Do not make any internal or external modifications on the device. Do not paint housing parts or screws.
▶ Avoid using the motor valve in the vicinity of strong magnetic fields.
▶ Secure the device from unintentional actuation.
▶ Only trained technicians may perform installation and maintenance work.
▶ After an interruption in the power supply, ensure that the process is restarted in a defined or controlled
manner.
▶ Observe the general rules of technology.
NOTE!
Electrostatic sensitive components and modules!
The device contains electronic components which react sensitively to electrostatic discharge (ESD). Contact with
electrostatically charged persons or objects are hazardous to these components. In the worst case scenario, they
will be destroyed immediately or will fail when energized.
• Observe the requirements in accordance with EN 61340-5-1 to minimize or avoid the possibility of damage
caused by sudden electrostatic discharge!
• Do not touch electronic components while the supply voltage is switched on!
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General information
Type 3280, 3285
4 GENERAL INFORMATION
4.1 Contact address
Germany
Bürkert Fluid Control Systems
Sales Center
Christian-Bürkert-Str. 13-17
D-74653 Ingelfingen
Tel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: info@burkert.com
International
Contact addresses are found on the final pages of the printed operating manual.
You can also find information on the Internet under:
www.burkert.com
4.2 Warranty
The warranty is only valid if the motor valve Type 3280 and 3285 is used correctly in accordance with the specified
operating conditions.
4.3 Information on the Internet
The operating instructions and data sheets for Types 3280 and 3285 can be found on the Internet at:
www.burkert.com
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Product description
Type 3280, 3285
5 PRODUCT DESCRIPTION
5.1 Intended use
The motor valve Type 3280 and 3285 is designed for controlling the flow rate of liquid and gaseous media. Only
clean, liquid or gaseous medium, which does not react with the bodies and sealing materials, may be controlled.
NOTE!
Unsuitable medium will damage the body and the seals.
Unsuitable medium may damage the body and the seals.
• Use suitable medium only.
• Check chemical compatibility in individual cases.
5.2 Properties
The regulation of the flow or switching of the valve is regulated with the aid of a stepper motor actuator which is
controlled by the integrated electronic control system. Therefore, no external motor control is required for step control.
Basic functions of the control electronics:
• Control of the valve opening by processing the external set-point values
• Output of the valve states via the LED display
• Position detection after power failure
- if power fails, the current position of the valve is retained
- when power is restored, the internal control electronics automatically detects it’s current position
• Reduction in the energy consumption
- The valve is designed to hold its position without the active use of the motor. As soon as the desired position
is achieved, motor is turned off and the valve uses only fraction of power required to move the valve.
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Product description
Type 3280, 3285
5.3 Structure and function
5.3.1 Electromotive seat valve Type 3280
The valve spindle is driven by a stepper motor. The angular movement of the motor is converted to translational
movement with the aid of a threaded spindle. The valve spindle is connected rigidly to the threaded spindle. The
valve spindle is connected to a control cone.
Linear stepper
motor
Body
Elastomer seal
Threaded spindle
Control electronics
Valve spindle
Control cone
Figure 1: Electromotive seat valve Type 3280
5.3.2 Electromotive disk valve Type 3285
The disk valve consists of a stepper motor with gearbox which transfers the rotational torque to the actuator shaft
via coupling. The actuator shaft has control/shut-off disc attached to it. A fixed disk with a mouth attached to the
body is used as a valve seat. Control/shut-off disc is pressed onto the fixed disk by a supporting spring. The actuator
turns the control/shut-off disc about 180° above the fixes disc and opens or closes the valve seat.
Stepper motor with
gearbox
Coupling
Body
Control electronics
Spring
Actuator shaft
Control/shut-off disc
Fixed disc
Figure 2: Electromotive disk valve Type 3285
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Product description
Type 3280, 3285
5.4 Device versions
Type Descriptions Seat diameter Version
3280 Electromotive 2-way seat
valve
1, 1.5, 2, 3, 4, 5, 6,
8, 10
Standard: • On-Off
• Control valve
3285 Electromotive 2-way disc
valve
8, 10, 12, 15, 20, 25 Positioner: • Analog
• Digital (Fieldbus)
Process controller: • Analog
• Digital (Fieldbus)
There are 2 versions of the positioner and the process controller:
- Analog: Set-point values are transmitted in analog mode via the standard signals,
- Digital: Set-point values are transmitted in digital mode via CANopen/büS.
The versions can be identified on the connector diagram. For this, see chapter “7.2”.
5.4.1 Electric control
The motor valves 3280 and 3285 feature an electromotive actuator with an electric control.
The device version is stated on the type label: G means on-off, 0 resp. H means control valve, C means
positioner and D stands for process controller.
Standard device:
• On-Off: By processing the external set-point values the valve is switching.
• Control valve: The device converts a external standard signal, set-point position to a valve position.
Both valve end positions are indicated by the LED status. Additionally, the digital output indicates when the closed
valve position has been achieved.
Positioner:
The position controller version converts a set-point position to a valve position. The position of the actuator is controlled according to the position set-point value. The current position (POS) of the electromotive valve is recorded
by the position measuring system. The position controller compares this position actual value to the set-point value
(CMD) specified as the standard signal. In case of a control difference (Xd1), the motor control signal is sent to the
actuating drive as the actuating variable. Z1 is a disturbance value.
Position controller
Position control circuit
CMD CTRL POS
Z1
POS
Valve opening
+
Xd1
-
Position measuring
system
Continuous valve
Electromotive
actuator
Position
set-point
value
Figure 3: Signal flow diagram position controller
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Product description
Type 3280, 3285
Both valve end positions are indicated by the LED status. Moreover, the position actual value recorded using the
position measuring system is output via the M12 circular plug-in connector.
It is possible to communicate with the device digitally via CANopen* or büS**.
* CANopen - A CAN-based fieldbus (Controller Area Network) used in automation technology to link
devices.
** büS - A CANopen-based fieldbus with additional functions.
The positioner version also features some special functions (see chapter “8.3.1”), which can be set up using the
Bürkert Communicator.
The operating instructions for the Bürkert Communicator can be found at www.burkert.com
Process controller:
The additionally implemented PID controller can perform not only the actual position control but also a process
control in the sense of a cascade control.
Position controller
Position control circuit
CMD CTRL POS
Z1
POS
Valve opening
+
Xd1
-
Position measuring
system
Continuous valve
Electromotive
actuator
Position
set-point
value
Process controller
Position
control
circuit
SP
CMD
Z2
PV
Process variable
+
Xd2
-
Transmitter
Process
Process
set-point
value
Valve
opening
Figure 4: Signal flow diagram process controller
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Product description
Type 3280, 3285
The process controller is integrated in a control circuit. The position set-point value of the valve is calculated from
the process set-point value and the process actual value using the control parameters (PID controller). The process
set-point value can be specified by an external signal.
During the process control the position control mentioned above becomes the subordinate auxiliary control circuit;
this results in a cascade control. The process controller in the main control circuit has a PID function. The process
set-point value (SP) is specified as a set-point value and is compared with the actual value (PV) of the process
variable to be controlled. The position measuring system records the current position (POS) of the electromotive
linear actuator. This position actual value is compared by the position controller with the set-point value (CMD)
specified by the process controller. If there is a control difference (Xd1), the actual position (POS) and therefore
the valve opening are changed by the control variable (CTRL). Z2 represents a disturbance variable.
It is possible to communicate with the device digitally via CANopen* or büS**.
* CANopen - A CAN-based fieldbus (Controller Area Network) used in automation technology to link
devices.
** büS - A CANopen-based fieldbus with additional functions.
The positioner version also features some special functions (see chapter “8.3.1”), which can be set up using the
Bürkert-Communicator.
The operating instructions for the Bürkert-Communicator can be found at www.burkert.com
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Technical data
Type 3280, 3285
6 TECHNICAL DATA
6.1 Conformity
The motor valve Type 3280 and 3285 is compliant with EU directives as stated in the EU Declaration of Conformity
(if applicable).
6.2 Standards
The applied standards, which are used to demonstrate compliance with the EU Directives, are listed in the EU type
test certificate and/or the EU Declaration of Conformity (if applicable).
6.3 Operating conditions
WARNING!
Risk of injury due to malfunction if device used outdoors.
▶ Do not use the device outdoors and avoid heat sources which may cause the permitted temperature range to
be exceeded.
▶ Protect the device from direct sunlight and humidity.
Permitted temperatures
Ambient temperature -10...+60 °C (observe derating curve, see chapter “6.6.1”)
-10...+50 °C Type 3280, Seat diameter 8...10, positioner and process controller
restricted
Medium temperature 0...+70 °C
Medium temperature for
oxygen 0...+60 °C
Permitted air humidity
Air humidity < 95 %, non-condensing
Authorized medium
Medium non-aggressive, clean and non-corrosive liquid and gaseous medium which do
not attack the bodies and sealing materials. Check resistance in individual cases
(see chemical resistance chart at www.burkert.com).
If medium is contaminated or contain particals, connect a suitable dirt filter
upstream.
Control functions Depending on the version, the seat of the valve is closed with or against the
medium flow:
Type 3280: flow direction under seat
Type 3285: flow direction over seat
Circuit function
2 (A)
1 (P)
2-way valve for continuous control of the flow rate in output A, motorized,
without power motionless
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Technical data
Type 3280, 3285
6.4 Type label
3280 X DN25 EPDM MS
D-74653 Ingelfingen
268611 SN000000
W3ZLT
24 V DC 8 W
NPT 1/4 PN 6 bar
Tamb see manual
Type
Electronic valve version
Seat diameter
Order number, Serial number
Seal material
Body material
Ambient temperature
Voltage, Max. power consumption
Port connection, Pressure range
Figure 5: Description of the type label (Example)
6.5 Mechanical data
Materials Type 3280 Type 3285
Actuator housing Black Plastic parts: PPS GF40,
Anthracite Plastic parts: PC GF10
Black Plastic parts: PPS GF40,
Anthracite Plastic parts: PC GF10,
in contact with medium: PPS GF40
Body Brass (MS) or
stainless steel (VA)
Brass (MS) or
stainless steel (VA)
Sealing material FKM, NBR or EPDM
1)
FKM, NBR or EPDM,
technical ceramic
Other materials in the
fluid area
Stainless steel (VA) Stainless steel (VA)
1) The seat seal is made of PEEK for 4 mm orifice of the variant for higher pressure.
Connections
Type 3280 G 1/4, G 3/8, G 1/2, NPT 1/4, NPT 3/8, NPT 1/2 and Cartridge
Type 3285 G 1/2, G 3/4, G 1, NPT 1/2, NPT 3/4 or NPT 1
Weight
Type 3280 ~ 0.7 kg (with VA body)
Type 3285 Seat diameter 8/10 ~ 0.8 kg (with VA body)
Seat diameter 12/15 ~ 1.2 kg (with VA body)
Seat diameter 20/25 ~ 1.5 kg (with VA body)
Dimensions see data sheet
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Technical data
Type 3280, 3285
6.6 Electrical data
Electrical
data
Standard Positioner Process controller
On-Off Control valve Analog
Digital
(Fieldbus)
Analog
Digital
(Fieldbus)
Connections circular plug-in connector
(M12 x 1, 8-pole)
circular plug-in
connector
(M12 x 1,
8-pole)
circular plug-in
connector
(M12 x 1,
5-pole)
circular plug-in
connector
(M12 x 1, 8-pole
and
M12 x 1, 5-pole)
circular plug-in
connector
(M12 x 1, 5-pole
and
M12 x 1, 5-pole)
Operating
voltage
24 V DC ±10 % -
residual ripple < 10 %
24 V DC ±10 % -
residual ripple < 10 %
24 V DC ±10 % -
residual ripple < 10 %
Power
consumption
Type 3280: max. 8 W, for
seat diameter 8...10 and
higher pressures max.
12 W
Type 3280: max. 8 W,
for seat diameter 8...10 and higher
pressures max. 12 W
Type 3280: max. 8 W,
for seat diameter 8...10 and higher
pressures max. 12 W
Type 3285: max. 12 W Type 3285: max. 12 W Type 3285: max. 12 W
Standby
power
consumption
approx. 1 W approx. 2 W approx. 2 W
Actuating time
(0...100 %)
Type 3280: approx. 2.5 s,
for setting “Valve actuating
speed normal”, see chapter
“7.3”
Type 3280: approx. 2.5 s, for setting
“Valve actuating speed normal”, see
chapter “8.3”
Type 3280: approx. 2.5 s, for setting
“Valve actuating speed normal”, see
chapter “8.3”
Type 3285: approx. 4 s,
for setting “Valve actuating
speed normal”, see chapter
“7.3”
Type 3285: approx. 4 s, for setting
“Valve actuating speed normal”, see
chapter “8.3”
Type 3285: approx. 4 s, for setting “Valve
actuating speed normal”, see chapter
“8.3”
Analog input
(Set-point
value input)
-
4...20 mA
or 0...10 V
(adjustable,
see chapter
“7.3”) or
PWM-signal
(800 Hz)
0...20 mA,
4...20 mA,
0...5 V or
0...10 V, see
chapter “8.3”
- 0...20 mA,
4...20 mA, 0...5 V
or 0...10 V, see
chapter “8.3”
-
Digital input
(set-point
value input)
0...5 V =
log“0“,
10...30 V
= log „1“
- - - - -
Analog input
(actual value
input)
- - - - 0...20 mA,
4...20 mA,
0...5 V or 0...10 V,
see chapter
„8.2.1“
0...20 mA,
4...20 mA,
0...5 V,
0...10 V or
Frequency:
Measuring range
5...2000 Hz
Input resistance
> 22 kΩ
Input signal >
10 Vss
Square waveform
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Technical data
Type 3280, 3285
Electrical
data
Standard Positioner Process controller
On-Off Control valve Analog
Digital
(Fieldbus)
Analog
Digital
(Fieldbus)
Input
impedance
for analog
input
- 60 Ω at
4...20 mA /
resolution
40 µA
22 kΩ at
0...10 V /
resolution
20 mV
60 Ω at
0...20 mA and
4...20 mA /
resolution 40 µA
22 kΩ at 0...5 V
and 0...10 V /
resolution
20 mV
- 60 Ω at 0...20 mA
and 4...20 mA /
resolution 40 µA
22 kΩ at 0...5 V
and 0...10 V /
resolution 20 mV
-
Analog output
(actual value
output)
- -
0...20 mA,
4...20 mA,
0...5 V, 0...10 V
(adjustable, see
chapter “8.3”)
- 0...20 mA,
4...20 mA,
0...5 V, 0...10 V
(adjustable, see
chapter “8.3”)
-
Analog output - - max. current for
voltage output
10 mA
max. load for
current output
560 Ω
- max. current for
voltage output
10 mA
max. load for
current output
560 Ω
-
Digital output active, max. 100 mA
current limitation, PNP,
switching voltage =
U
supply
-1 V
short-circuit proof
- - - -
Limit switch contactless end position
detection
- - - -
Position measuring system
- non-contact, high resolution, and
thus wear-free position measuring
system
non-contact, high resolution, and thus
wear-free position measuring system
Parameterization
interface
- büS or
CANopen
2)
- büS or CANopen
2)
-
Communications interface
- - CANopen/büS - CANopen/büS
Duty cycle
as per EN 60034-1: S3
50 %, depending on the
operating conditions.
Observe derating curve,
see chapter “6.6.1”
as per EN 60034-1: S3 50 %,
depending on the operating
conditions.
Observe derating curve, see
chapter “6.6.1”
as per EN 60034-1: S3 50 %,
depending on the operating conditions.
Observe derating curve, see chapter
“6.6.1”
2) Analog version: 3.3 V signal voltage, reliable communication is reduced as the line length and transmission rate increase.
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Technical data
Type 3280, 3285
6.6.1 Derating
The maximum duty cycle of the valve depends on the maximum ambient temperatures and the current required by
the stepper motor.
The duty cycle does not refer to the duty cycle of the device but to the duty cycle of the motor. This is not
switched on unless the valve is to move. Frequent set-point value changes will drastically increase the
duty cycle of the motor.
The derating curve can be used to indicate the maximum duty cycle permissible at the corresponding ambient
temperature. A lower duty cycle must be selected for high medium temperatures. By switching on the low power
function a higher duty cycle can be achieved (Warning: during low power function, max medium pressure is reduced;
if violated Valve will not move or malfunction).
5 10
10
15 20
20
30
40
50
60
70
80
90
100
25 30
35 40 455055 60 65
Max. ambient temperature [°C]
Duty cycle [%]
Normal operation
Low power function
Type 3280
Seat ø 1...6 <6 bar standard
5 10
10
15 20
20
30
40
50
60
70
80
90
100
25 30
35 40 455055 60 65
Max. ambient temperature [°C]
Duty cycle [%]
Normal operation
Low power function
Type 3285
Seat ø 8...25 standard
Figure 6: Derating curve for standard device
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Technical data
Type 3280, 3285
5 10
10
15 20
20
30
40
50
60
70
80
90
100
25 30
35 40 455055 60 65
Max. ambient temperature [°C]
Duty cycle [%]
Normal operation
Low power function
Type 3280
Seat ø 1...6 Positioner and process controller
Seat ø 8, 10 Standard
Seat ø 1...6 > 6 bar, Standard
5 10
10
15 20
20
30
40
50
60
70
80
90
100
25 30
35 40 455055 60 65
Max. ambient temperature [°C]
Duty cycle [%]
Normal operation
Low power function
Type 3285
Seat ø 8...25 Positioner and process controller
Type 3280
Seat ø 8...10 Positioner and process controller
(only up to 50 °C)
Figure 7: Derating curve for control positioner, process controller and standard version
6.7 Fluidic data
Type
Seat diameter KV
s value
[m³/h]
3)
Max. pressure for flam-
mable gases [bar]
Max. pressure
[bar]
3280
1 0.03 3
See general information
on the type label
1.5 0.065 3
2 0.15 3
3 0.3 3
4 0.5 3
5 0.7 3
6 0.9 3
8 1.5 3
10 1.9 3
3285
8 1.8 3
10 2.5 3
12 3.9 3
15 5.4 3
20 8.1 3
25 9.6 3
3)
The KV
s value
is a flow rate value for water, measurement at +20 °C and 1 bar pressure difference above the fully opened
valve.
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Installation
Type 3280, 3285
7 INSTALLATION
DANGER!
Risk of injury from high pressure in the system or device.
▶ Before working on the system or device, cut off the pressure and deaerate/drain lines.
Risk of injury due to electrical shock.
▶ Before working on the system or device, 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 only by trained technicians and with the appropriate tools.
▶ Secure system against unintentional activation.
▶ Following installation, ensure a controlled or defined restart.
7.1 Fluid installation
Installation position: any position, preferably with actuator above and installed vertically with the actuator cover
upwards
→ Clean pipelines and port connections.
→ Install a dirt filter before the valve inlet (≤ 0.3 mm).
NOTE!
Caution risk of breakage.
• Do not use plastic actuator housing as a lever arm.
→ Hold the device with a suitable tool (open-end wrench) on the body and screw into the pipeline.
→ Observe flow direction. The arrow on the body indicates the direction of flow.
Type 3280: Flow direction below seat, is always closed against the medium flow;
Type 3285: Flow direction above seat, is always closed with the medium flow.
Figure 8: Direction of flow Type 3280, Flow direction
below seat
Figure 9: Direction of flow Type 3285, Flow direction
above seat
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Installation
Type 3280, 3285
7.1.1 Installation area for cartridge body
15°
15°
Rmax=10
B
A
A
B
36.5
11.75
6.5
Ø 36
Ø 5
Ø 33.8
+0.05
+0.05
+0,1
+0.1
+0.1
H7
+0.1
0.05
0.05
0.02
7.7
14.2
4.2
20
(1.96)
Ø 6
13
R11.75
1
1.5
-0.05
6
47°
R11.75
Ra1.6
-0.2
+0.1
Figure 10: Installation area for cartridge body
7.1.2 Installation of the motor valve with cartridge body
Cartridge body
Figure 11: Motor valve with cartridge body
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Installation
Type 3280, 3285
→ Check that the O-rings on the valve are clean.
→ Clean pipelines and flange connections.
→ Install a dirt filter upstream of the valve inlet (≤ 0.3 mm).
If required, use a suitable lubricant (e.g. water) when installing the O-rings.
→ Install valve (see “Figure 10”) and align. When installed, the valve can no longer be turned.
→ Secure the valve using suitable fastening materials, e.g. by pinning it with 2 cylinder pins or dowel pins Ø
5 mm, min. 30 mm in length.
Proportional valve with cartridge
body
Block
Figure 12: Installed motor valve with cartridge body
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Installation
Type 3280, 3285
7.2 Electrical installation
None of the electrical inputs and outputs of the device are galvanically isolated from the supply voltage.
DANGER!
Risk of injury due to electrical shock.
▶ Before working on the system or device, switch off and isolate the power supply to prevent reactivation of the
device.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
NOTE!
Damage to the motor valve due to incorrect supply voltage.
• The supply voltage must correspond with the voltage indicated on the type label.
• If the ground connection is not connected, the conditions of the EMC Law will not be met.
→ Connect the motor valve according to the table.
When the supply voltage is applied, the motor valve is ready for operation.
Socket
M12, 5-pole
Circular connector
M12, 8-pole
3
1
2
4
5
1
2
3
4
5
6
7
8
Figure 13: Designation of the circular connector, analog version
Socket
M12, 5-pole
Circular connector
M12, 5-pole
3
1
2
4
5
3
1
2
4
5
Figure 14: Designation of the circular connector, digital version
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Installation
Type 3280, 3285
The threaded sleeve of the M12 circular connector is connected to the valve body. Connect the body to
a suitable ground connection. To ensure electromagnetic compatibility (EMC), ensure that the cable is as
short as possible and the cross-section is as large as possible.
7.2.1 Pin assignment for the on-off valve, circular connector
M12, 8-pole
1
2
3
4
5
6
7
8
Pin Wire colors*Configuration External circuit
1
white
Supply + 24 V DC ±10 %, max. residual ripple 10 %
2
brown
Supply GND 24 V DC GND
3
green
do not connect! Electrically insulate wire on connection line
4
yellow
do not connect! Electrically insulate wire on connection line
5
grey
do not connect! Electrically insulate wire on connection line
6
rose
Digital input + 0...5 V (log. 0), 10...30 V (log. 1), not galvani-
cally isolated
7
blue
Digital output 0...5 V (log. 0), 10...30 V (log. 1), not galvani-
cally isolated
8
red
Signal GND Signal GND
Body Shielding -
*
The indicated wire colors refer to the connection cable, order no. 919061, available as an accessory.
7.2.2 Pin assignment for the control valve, circular connector
M12, 8-pole
1
2
3
4
5
6
7
8
Pin Wire colors*Configuration External circuit
1 white Supply + 24 V DC ±10 %, max. residual ripple 10 %
2 brown Supply GND 24 V DC GND
3 green do not connect! Electrically insulate wire on connection line
4 yellow do not connect! Electrically insulate wire on connection line
5 grey do not connect! Electrically insulate wire on connection line
6 rose Set-point value
input +
4...20 mA / 0...10 V, not galvanically isolated
PWM-signal (800 Hz)
7 blue Digital output 0...5 V (log. 0), 10...30 V (log. 1), not gal-
vanically isolated
8 red Signal GND Signal GND
Body Shielding -
*
The indicated wire colors refer to the connection cable, order no. 919061, available as an accessory.
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Installation
Type 3280, 3285
7.2.3 Pin assignment for the positioner
7.2.3.1 Analog version, circular connector M12, 8-pole
1
2
3
4
5
6
7
8
Pin Wire colors* Configuration External circuit
1 white Supply + 24 V DC ±10 %, max. residual ripple 10
%
2 brown Supply GND 24 V DC GND
3 green CAN low CAN low
**
4 yellow CAN high CAN high
**
5 grey CAN GND CAN GND
**
6 rose Set-point value
input +
0...20 mA / 4...20 mA / 0...5 V / 0...10 V,
not galvanically isolated
7 blue Actual value
output
0...20 mA / 4...20 mA / 0...5 V / 0...10 V,
not galvanically isolated
8 red Signal GND Signal GND
Body Shielding -
* The indicated wire colors refer to the connection cable, order no. 919061, available as an accessory.
** 3.3 V signal voltage, reliable communication decreases as the line length and transfer rate increases.
7.2.3.2 Digital version, circular connector M12, 5-pole
3
1
2
4
5
Pin Wire colors*Configuration External circuit
1 Shielding
2 red Supply + 24 V DC ±10 %, max. residual ripple 10
%
3 black GND GND
4 white CAN high CAN high
5 blue CAN low CAN low
* The indicated wire colors refer to the büS cables which are available as accessories.
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Installation
Type 3280, 3285
7.2.4 Pin assignment for process controller
7.2.4.1 Analog version, circular connector M12, 8-pole
1
2
3
4
5
6
7
8
Pin Wire colors* Configuration External circuit
1 white Supply + 24 V DC ±10 %, max. residual ripple
10 %
2 brown Supply GND 24 V DC GND
3 green CAN low CAN low
**
4 yellow CAN high CAN high
**
5 grey CAN GND CAN GND
**
6 rose Set-point value
input +
0...20 mA / 4...20 mA / 0...5 V /
0...10 V,
not galvanically isolated
7 blue Actual value output 0...20 mA / 4...20 mA / 0...5 V /
0...10 V,
not galvanically isolated
8 red Signal GND Signal GND
Body Shielding -
* The indicated wire colors refer to the connection cable, order no. 919061, available as an accessory.
** 3.3 V signal voltage, reliable communication decreases as the line length and transfer rate increases.
7.2.4.2 Analog version, socket M12, 5-pole
3
1
2
4
5
Pin Wire colors
*
Configuration External circuit
1 brown Sensor supply + 24 V DC ±10 %, max. residual ripple
10 %
2 white Actual value input
sensor +
0...20 mA / 4...20 mA / 0...5 V /
0...10 V
3 blue GND GND
4 black GND GND (Bridge to GND Pin 3)
5 grey Not assigned Not assigned
Body Shielding -
* The indicated wire colors refer to the connection cable, order no. 559177, available as an accessory.
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Installation
Type 3280, 3285
7.2.4.3 Digital version, circular connector M12, 5-pole
3
1
2
4
5
Pin Wire colors*Configuration External circuit
1 Shielding
2 red Supply + 24 V DC ±10 %, max. residual ripple
10 %
3 black GND GND
4 white CAN high CAN high
5 blue CAN low CAN low
* The indicated wire colors refer to the büS cables which are available as accessories.
7.2.4.4 Digital version, socket M12, 5-pole
3
1
2
4
5
Pin Wire colors
*
Configuration External circuit
1 brown Sensor supply +24 V DC ±10 %, max. residual ripple
10 %
2 white Actual value
input
sensor +**
0...20 mA / 4...20 mA / 0...5 V / 0...10
V / Frequency (Pulse +)
3 blue GND GND
4 black GND GND (Bridge to GND Pin 3)
5 grey Not assigned Not assigned
Body Shielding -
* The indicated wire colors refer to the connection cable, order no. 559177, available as an accessory.
** A PNP sensor must be used.
7.3 DIP switch settings (analog version only)
DANGER!
Risk of injury due to electrical shock.
▶ Before opening the actuator cover, switch off and isolate the power supply to prevent reactivation of the device.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
Although the factory settings are ideal for most applications, the settings can be adjusted with DIP switches. The
DIP switches can be set to “ON” or “OFF” position depending on the factory order code.
The DIP switches are accessible on the electronic PCB by opening the actuator cover.
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Installation
Type 3280, 3285
7.3.1 Setting the DIP switch for Type 3280 and Type 3285
Opening the actuator cover Type 3280
Actuator cover
Actuator housing
Body
Screws
Connection plate
with control
electronics
Figure 15: Opening the actuator cover, Type 3280
Opening the actuator cover Type 3285
Actuator cover
Actuator housing
Body
Screws
Connection plate
with control
electronics
Figure 16: Opening the actuator cover, Type 3285
→ Disconnect the power supply from the device.
→ Carefully loosen the 4 screws on the lower side of the actuator housing, Type 3280, or on the upper side
of the actuator cover, Type 3285, using a suitable tool. Do not unscrew the screws completely, as they are
designed not to fall out.
NOTE!
The connection plate is only plugged in and may fall down when the actuator cover is removed. When removing
the cover, hold the connection plate on the plug so that the connection plate remains on the actuator housing
and is not removed together with the cover.
→ Secure actuator cover and connection plate with control electronics against falling down and remove the
actuator cover.
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Installation
Type 3280, 3285
Setting the DIP switch Type 3280
DIP switches
Control electronics
Figure 17: Location of the DIP switch, Type 3280
Setting the DIP switch Type 3285
DIP switches
Control electronics
Figure 18: Location of the DIP switch for Type 3285
→ DIP switch, set to “ON” or “OFF” depending on required function. To do this, carefully actuate the particular
DIP switch using a suitable tool.
ON 1
2
3
4
Figure 19: DIP switches
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Installation
Type 3280, 3285
Description of the function
DIP
switches
Posi-
tion
Function for the
on-off
Function for the
control valve
Function for the
standard version
PWM version
Function for the
positioner and
process controller
version (applies
to analog version
only)
1 OFF Normal oper-
ating direction
of the set-point
value 10...30 V
= valve opens
Normal operating
direction of the setpoint value (e.g. setpoint value 4...20 mA
corresponds to
position 0...100 %),
increasing
Normal operating
direction of the set-point
value (PWM duty cycle
0–100 % corresponds
to position 0–100 %),
increasing
no function
ON Reversal of
the operating
direction of the
set-point value
10...30 V = valve
closes
Reversal of the operating direction of the
set-point value (e.g.
set-point value 20...4
mA corresponds to
position 0...100 %),
decreasing
Reversal of the operating
direction of the set-point
value (PWM duty cycle
0–100 % corresponds
to position 0–100 %),
decreasing
no function
2 OFF no function Set-point value input
4...20 mA
no function no function
ON no function Set-point value input
0...10 V
no function no function
3 OFF Valve actuating
speed: normal
mode
Valve actuating
speed: normal mode
Valve actuating speed:
normal mode
büS
ON Valve actuating
speed: slow
mode
Valve actuating
speed: slow mode
Valve actuating speed:
slow mode
CANopen
4 OFF Low power
function: off
Low power function:
off
Low power function: off no function
ON Low power
function: on,
lower force, less
heat generation
in the valve
Low power function:
on, lower force, less
heat generation in the
valve
Low power function: on,
lower force, less heat
generation in the valve
no function
Whether the device is a PWM version can be found on the type label.
The change in function does not become effective until the supply voltage is applied again.
A more precise description of the functions can be found in chapter “8 Start-up”.
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Installation
Type 3280, 3285
Closing the actuator cover
NOTE!
Damage or malfunction due to ingress of dirt and moisture!
• To guarantee protection class IP, ensure that the actuator housing has been installed correctly.
Do not clamp any loose cables!
Position of the cable
Figure 20: Correct position of the cable
→ Carefully attach actuator cover.
→ Manually insert 4 screws into the designated holes on the lower side of the actuator housing, Type 3280, or
on the upper side of the actuator cover, Type 3285, and turn them onto the first thread.
→ Tighten screws (tightening torque: 2 Nm).
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Installation
Type 3280, 3285
7.4 Accepting and saving SIM card data (digital
version only)
The optionally available SIM card can be used to save and transfer device-specific values and user settings to a different
device.
A SIM card which has just been inserted is checked for existing data during device restart. Where applicable, this data
is accepted or overwritten:
• The SIM card does not contain any data.
The existing device-specific values and user settings are saved on the SIM card.
• The SIM card contains data which is compatible with the device.
The SIM card data is accepted by the device. The existing device-specific values and user settings are
overwritten.
• The SIM card contains data which is not compatible with the device.
The device overwrites the data on the SIM card with its own, device-specific values and user settings.
NOTE!
Do not use any commercially available SIM cards for the device.
The inserted SIM card is a special industrial version which is particularly durable and temperature-resistant.
Order the SIM card via your Bürkert sales department only.
Inserting the SIM card:
→ Open device (see chapter “7.3”).
→ Carefully push SIM card into the device.
→ Overcome the opposing force of the spring contact and insert all the way. Bürkert lettering on the side facing
away from the printed circuit board and beveled side upwards.
→ Close device (see chapter “7.3”).
→ Restart device.
The new data are transferred.
SIM card
Figure 21: Inserting the SIM card
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Installation
Type 3280, 3285
7.5 LED display
With the aid of the positioner version and process controller version, it is possible to use the Bürkert-Communicator Software to toggle the LED colors between standard and NAMUR NE 107.
7.5.1 Display elements standard
LED color Status Display
white continuously on Normal operation
yellow continuously on Valve completely open
flashing,
color alternates with
the colors of the valve
position
Out of specification: Ambient conditions or process
conditions for the device are outside the specified area.
Internal device diagnostics point to problems in the device
or the process properties
green continuously on Valve closed
red flashing,
color alternates with
the colors of the valve
position
Error
see chapter “9.3 Troubleshooting”, page 45
white, green or red flashing Is used to identify a device in the büS network. The
„flashing“ status is started in the Bürkert Communicator
Software when selecting the device
orange flashing,
color alternates with
the colors of the valve
position
Function check: Work is being carried out on the device;
controlled operation is therefore temporarily not possible
no color or LED off - Valve without power supply
7.5.2 Display elements NAMUR NE 107
LED color Color
code
Status Description Display
green 1 continu-
ously on
Diagnostics
active
Device is operating faultlessly. Status changes are shown
in color.
Messages are transmitted via any connected field bus.
red 5 continu-
ously on
Failure, error or
fault
Due to a malfunction in the device or on its periphery,
controlled operation is not possible.
green or
red
1 or 5 flashing Is used to identify a device in the büS network. The
„flashing“ status is started in the Bürkert Communicator
Software when selecting the device
orange 4 continu-
ously on
Function check The device is being worked on; controlled operation is
therefore temporarily not possible.
yellow 3 continu-
ously on
Outside the
specification
The ambient conditions or process conditions for the
device are outside the specified area.
Device internal diagnostics point to problems in the
device or with the process properties.
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Installation
Type 3280, 3285
no color
or LED off
- - - Valve without power supply
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Start-up
Type 3280, 3285
8 START-UP
WARNING!
Danger due to improper operation.
Improper operation may result in injuries as well as damage to the device and the area around it.
▶ The operating personnel must know and have understood the contents of the operating instructions.
▶ Observe the safety instructions and intended use.
▶ Only adequately trained personnel may operate the device.
Before start-up, carry out fluid and electrical installation of the valve.
Motor valve Type 3280 and 3285 has different functions which can be configured and parametrized via the DIP
switches.
8.1 Functions of the standard device
The following basic functions can be activated or changed via the DIP switches.
Function Description
Zero point shut-off (not
for on-off)
The valve has a zero point shut-off which guarantees that the valve closes tight
when input signals are below a threshold of 1 % of the input signal. The valve is
closed when values are below this threshold
Interruption in the power
supply
When the power supply is interrupted, the valve remains in its respective position.
When the supply voltage is applied again, the control electronics automatically
detect its current valve position and will automatically adjust the valve position if
standard signal has changed
Digital output When the valve reaches the closed position, the position can be relayed e.g. to a
PLC via the digital output.
10 to 30 V = log “1” = valve closed
Analog input
(set-point value input)
(not for on-off)
0...10 V standard signal or 4...20 mA standard signal, see chapter “7.3”. With a
set-point value input of 4...20 mA, the valve stops in the current position and the
LED flashes red (signal error detection) if the value of the input signal falls below
4 mA
Digital input (set-point
value input) (only for
on-off)
The digital input is used as a normally closed contact. When 10 - 30 V is applied,
the valve opens.
0...5 V = log „0“, 10...30 V = log „1“
Inverted input correspondingly inverted!
Effective direction
The normal effective direction of the set-point value can be set to increasing or
decreasing (see chapter “7.3”). If valves are set to increasing, the valve is opened
as far as possible with the largest set-point
Valve actuating speed Two valve actuating speeds can be set (see chapter “7.3”). At normal valve speed the
motor valve moves from the closed valve position to the open valve position (0...100 %)
in 2.5 s (Type 3280), 4 s (Type 3285). At slow valve speed the motor valve moves
from 0...100 % in 5 s (Type 3280), 10 s (Type 3285)
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Start-up
Type 3280, 3285
Low power function The motor valve has a low power function which can be adjusted (see chapter
“7.3”). When the function is switched on, the motor is supplied with lower current.
The motor then provides a lower torque; as a result the maximum permitted medium
pressure is lower. The function may be used only at very low differential pressures
from input to output (max. medium pressure 3 bar, max. differential pressure 1 bar)
8.2 Functions of the positioner and process controller
version
Motor valve Type 3280 and 3285 has different functions, which can be changed via the DIP switches and communications software.
Functions for positioner and process controller:
Function Description
Zero point shut-off The valve features a zero point shut-off which ensures sealing of the valve with
input signals below a set input signal threshold. The valve is closed when values are
below this threshold. See chapter “8.3.1”
Interruption in the power
supply
When the power supply is interrupted, the valve remains in its respective position.
When the supply voltage is applied again, the control electronics automatically
detect its current valve position and will automatically adjust the valve position if
standard signal has changed
Correction characteristic
for adapting the operating characteristic
Use this additional function to select a transfer characteristic in relation to the setpoint value (set-point position, CMD) and the valve stroke (POS) for correcting the
flow or operating characteristic. See chapter “8.3.1”
Insensitivity range The position controller is only activated once a defined control difference has been
achieved. See chapter “8.3.1”
Effective direction Reversal of the effective direction of the set-point value. See chapter “8.3.1”
Safety position Definition of the safety position for set-point value input < 4 mA. See chapter
“8.3.1”
Value actuating speed
Input of the opening and closing time. See chapter “8.3.1”
Limit of the mechanical
valve positioning range
The physical positioning range is limited to defined ranges.
Simulation Simulation of set-point values for testing device functions, see description in
chapter “8.3.1”
Analog input (set-point
value input) (analog
version only)
4...20 mA; 0...20 mA; 0...5 V; 0...10 V can be set as standard signals, see chapter
“8.3.1”
Analog output (actual
value output) (analog
version only)
4...20 mA; 0...20 mA; 0...5 V; 0...10 V can be set as standard signals, see chapter
“8.3.1”
User calibration Changing the factory calibration of the signal input. See chapter “8.3.1”
Energy save function
The motor valve features a set table energy-saving function. When the energy-
saving function is switched on, less current is supplied to the motor. The motor then
provides a smaller torque, resulting in a reduced max. permissible medium pressure.
Only use the energy-saving function with very low differential pressures from On-
Closed output (max. medium pressure 3 bar, max. differential pressure 1 bar). See
chapter “8.3.1”
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Start-up
Type 3280, 3285
Parameterization
interface
büS or CANopen can be selected as a parameterization interface. See chapter
“7.3”
Communications
interface
In the case of the digital version, it is possible to communicate with the device via
büS/CANopen (e.g. set-point/actual values)
Functions for process controller only:
Function Description
Physical scaling of the
process variables
Function for scaling process actual value and process set-point value. See chapter
„8.3.2“
Process controller
optimization
Function for optimizing the process controller parameters. See chapter „8.3.2“
Process characteristic
linearization
Function for linearization of the process characteristics. See chapter „8.3.2“
Parameterization of the
PID process controller
Setting amplification factor (P-component), reset time (I-component), derivative
time (D-component), insensitivity range (dead band), filtering of the process actual
value input. See chapter „8.3.2“
Simulation of process
values
Simulation of actual values for testing device functions. See chapter „8.3.2“
Analog input (actual value
input)
4...20 mA; 0...20 mA; 0...5 V; 0...10 V can be set as standard signals. See chapter
„8.3.2“
In the case of the digital version, the actual value input can process not only the
standard signals but also frequency signals
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Start-up
Type 3280, 3285
8.3 Setting options
The Bürkert Communicator software enables communication with valves 3280 and 3285.
The operating instructions for the Bürkert Communicator can be found at www.burkert.com.
8.3.1 Setting options for running positioner and process
controller
INPUT/OUTPUT
Selected standard signal
Under this menu option, enter the signal used for the set-point value or actual value
- Current 4...20 mA (for digital version only actual value)
- Current 0...20 mA (for digital version only actual value)
- Voltage 0...10 V (for digital version only actual value)
- Voltage 0...5 V (for digital version only actual value)
- CANopen/büS (digital version only)
- Frequency (digital version only)
SIGNAL.SIM
Simulation of the set-point value
Use this function to simulate the set-point value. The set set-point value source is ignored by the device during
simulation. The following types of signal can be entered:
Sinus
Sine wave
Square
Square wave
Triangle
Triangle wave
Fixed
Manual input of a fixed set-point value
The following parameters can be set for the selected waveform:
Menu option Parameter setting Schematic representation with sine wave
Offset
(Zero offset as %)
70 %
50 %
Offset as %
t
Amplitude
(Amplitude as %)
70 %
50 %
Amplitude as %
t
Periode
(Cycle duration in s)
70 %
50 %
Period in s
t
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Start-up
Type 3280, 3285
X.CONTROL
Parameterization of the position controller, insensitivity range (dead band) of the position controller
Input of the dead band in %, with regard to the scaled stroke/rotation angle range. This function ensures that the
controller is only activated once a certain control difference has been achieved.
X.TIME
Limiting the control speed
Smaller control speeds can be entered in order to limit the control speed. Following settings via the Bürkertommunicator are possible:
Mode Max. control speed [sec.]
Slow 1 2.8
Slow 2 3.2
Normal 2.5
Faster 2.2
DIR.CMD
Effective sense or effective direction of the position controller set-point value
Use this auxiliary function to set the sense of effective direction between the input signal (INPUT) and the nominal
position (CMD) of the actuator.
Set-point position (CMD)
Fall
Rise
Standard signal
0 mA, 4 mA,
0 V
20 mA,
5 V, 10 V
100 %
0 %
Valve open
Valve close
Figure 22: Graph of effective direction
F.LIMIT
Energy-saving function
The motor valve features a set table energy-saving function. When the energy-saving function is switched on, less
current is supplied to the motor. The motor then provides a smaller torque, resulting in a reduced max. permissible
medium pressure. Only use the energy-saving function with very low differential pressures from On-Closed output
(max. medium pressure 3 bar, max. differential pressure 1 bar).
SAFEPOS when büS/CANopen
Entry of the safety position
You can input how the actuator is to behave if communications fail. It is possible to move the actuator into any
position or to pause it in the current position.
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Start-up
Type 3280, 3285
SAFEPOS when using the energy pack module (capacitive buffer module ID 773 440)
Entry of the safety position
To be able to approach a valve safety position in the event of a power failure, the valve must be energized via the
capacitive buffer module. In the event of a power failure, the buffer module provides an output voltage of 18 V DC
for several seconds. The reduced input voltage is detected by the valve and the safety position is approached
accordingly. It is possible to move the actuator into any position or to pause it in the current position. This
Safepos function has the highest priority.
SAFEPOS when standard signal < 4 mA
Entry of the safety position
At a set-point value input of 4...20 mA, you can input how the actuator is to behave if the input signal drops below
4 mA (signal fault detection). It is possible to move the actuator to the respective end positions or to pause it in
the current position.
X.LIMIT
Limits the mechanical valve positioning range
This function limits the (physical) stroke to specified % values (lower and upper). In doing so, the stroke range of
the limited stroke is set equal to 100 %. If the limited stroke range is left during operation, negative actual position
or actual position greater than 100 % are indicated.
Factory setting: Lower position limit = 0 %, Upper position limit = 100 %
Adjustment range:
Lower position limit: 0...20 % of the total stroke
Upper position limit: 80...100 % of the total stroke
Limited
stroke
Unlimited stroke
Physical
stroke
(%)
Limited
stroke (%)
Set-point value [mA](INPUT)
Figure 23: Diaphragm X.LIMIT
CUTOFF
Sealing function for position controller / process controller
This function causes the valve to be sealed outside the control area. Enter the limits for the position set-point
value (CMD) or process set-point value after which the actuator is closed fully.
CHARACT
Select the transfer characteristic between input signal (position set-point value) and stroke (correction
characteristic)
Use this auxiliary function to select a transfer characteristic with reference to set-point value (nominal position, CMD)
and valve position (POS) for correction of the flow-rate or operating characteristic.
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Start-up
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The flow characteristic kV = f(s) indicates the flow-rate of a valve, expressed by the kV value depending on the
position/angle s. It is specified by the design of the valve seat and the seat seal. In general two types of flow characteristics are implemented, the linear and the equal percentage.
In the case of linear characteristics identical k
V
value changes kV are assigned to identical stroke changes ds
(dkv=n
lin
*ds). In the case of an equal percentage characteristic an equal percentage change of the kV value cor-
responds to a stroke change ds (dkv/kv=n
eqlprct
*ds). The operating characteristic Q = f(s) states the correlation
between the volume flow Q, which flows through the valve installed in the system, and the position/angle s.
In the case of control tasks for closed-loop control systems it is usually particular demands which are placed on
the course of the operating characteristic, e.g. linearity. For this reason it is occasionally necessary to correct the
course of the operating characteristic in a suitable way. Equal percentage characteristics 1:25, 1:33, 1:50, 25:1,
33:1 and 50:1 and a linear characteristic can be set. Furthermore, a characteristic can be freely programmed.
Position set-point value [%]
CMD
Standardised valve stroke [%] (POS)
Figure 24: Characteristics
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Start-up
Type 3280, 3285
8.3.2 Setting options for running process controller
PV.SCALE/SP.SCALE
Scaling of the process controller
The function can be used to specify the following settings:
• Unit of the process actual value
• Position of the decimal point
• Values for the lower and upper process actual value
• Values for the lower and upper process set-point value
Scaling example for the 4...20 mA input
Process actual value from the transmitter: 4...20 mA corresponds to 0...10 l/min
Process set-point value from PLC: 4...20 mA corresponds to 0...8 l/min
Scaling value
[l/min]
Input signal
[mA]
Process set-point
value
Process actual value
4
0
10
20
PVmin
SPmin
PVmax
SPmax
Example for the input of scaling values
Version 1 Version 2 Version 3
PVmin 0 0 0
PVmax 1.0 10.0 100.0
SPmin 0 0 0
SPmax 0.8 8.0 80.0
Figure 25: Example of a sensor calibration
When setting up a process control, observe the following sequence: P.LIN → P.TUNE
P.LIN
Linearization of the process
This function can be used to linearize the process characteristic. In doing so, the nodes for the correction characteristic are automatically determined. To do this, the program runs through the valve positioning range in 20 steps
and measures the associated process variable.
The correction characteristic and the associated value pairs are saved in the menu item CHARACT → FREE. This
is where they can be viewed and freely programmed.
P.TUNE
Self-optimization of the process controller
To obtain a good control performance, the structure and parameterization of the controller must be adjusted to
the properties of the process (control system). This function can be used to parameterize the PID controller integrated in the process controller. In doing so, the parameters for the P, I and D-components of the PID controller
are automatically determined and transferred into the corresponding menus from (KP, TN, TV). This is where they
can be viewed and changed.
P.CONTROL
Parameterization of the process controller
• Insensitivity range (dead band).
This function specifies that the process controller will respond from a certain control difference only.
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Start-up
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• Amplification factor of the process controller.
The amplification factor determines the P-component of the PID controller.
• Reset time of the process controller.
The reset time determines the I-component of the PID controller.
• Derivative time of the process controller.
The derivative time determines the D-component of the PID controller.
• Filtering of the process actual value input.
The filter of the input signal has a low-pass performance and can be adjusted in several stages.
Setting of the filter effect
Setting Corresponds to cut-off frequency (Hz) Effect
0 10 Lowest filter effect
1 5
2 2
3 1
4 0.5
5 0.2
6 0.1
7 0.07
8 0.05
9 0.03 Largest filter effect
P.SIM
Simulation of the process
This function can be used to simulate the process. The following parameters can be set:
SIM.Gain
Specify amplification factor
SIM.Delay
Specify time constant in seconds
Example of a simulated process:
63 %
1
SIM.Gain
(Amplification factor [Kp])
t
SIM.Delay (Time constant [T] in s)
Output of the simulated
process
Input of the simulated
process
y
u
5
Figure 26: Example of a simulated process. Performance of the PT1 element
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Start-up
Type 3280, 3285
8.3.3 Other settings
CAL INP
Calibration of the position set-point value (4...20 mA; 0...20 mA; 0...5 V; 0...10 V)
The set-point value input can be re-calibrated using this auxiliary function. Acceptance of the min. input signal
(0 mA; 4 mA; 0 V): Create the minimum value of the input signal at the input and confirm it in the software.
Acceptance of the max. input signal (20 mA; 5 V; 10 V): Create the maximum value of the input signal at the input
and confirm it in the software.
Calibration of the position actual value (4...20 mA; 0...20 mA; 0...5 V; 0...10 V)
This additional function can be used to recalibrate the actual input. Acceptance of the minimum input signal (0
mA; 4 mA; 0 V): Set the minimum value of the unit signal at the input and confirm value in the software. Acceptance of the maximum input signal (20 mA; 5 V; 10 V): Set the maximum value of the unit signal at the input and
confirm value in the software.
FACTORY RESET
Reset to the factory settings
Use this function to reset all user settings to the delivery status. All parameters, except for the calibration values,
are reset to default values. The hardware is subsequently reset.
DIAGNOSIS
Errors can be read via this function.
TOGGLE LED DISPLAY
Toggle the LED colors between standard and NAMUR NE 107
Use this function to toggle the colors for displaying the device status between standard and NAMUR NE 107.
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Maintenance, troubleshooting
Type 3280, 3285
9 MAINTENANCE, TROUBLESHOOTING
DANGER!
Risk of injury from high pressure in the system or device.
▶ Before working on the system or device, cut off the pressure and deaerate/drain lines.
Risk of injury due to electrical shock.
▶ Before working on the system or device, switch off and isolate the power supply to prevent reactivation of the
device.
▶ Observe applicable accident prevention and safety regulations for electrical equipment.
WARNING!
Risk of injury from improper maintenance work.
▶ Maintenance may be carried out only by trained technicians and with the appropriate tools!
▶ Secure system against unintentional activation.
▶ Following maintenance, ensure a controlled restart.
9.1 Maintenance
The motor valve Type 3280 and 3285 is maintenance-free under normal conditions.
9.2 Cleaning
Use the normal cleaning agents to clean the Type 3280 and 3285. Use no alkaline cleansing agents, as these
have a damaging effect on the materials used.
9.3 Troubleshooting
In malfunctions occur, check:
• the port connectors,
• whether the operating pressure is within the permitted range,
• the power supply and the standard signals.
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Maintenance, troubleshooting
Type 3280, 3285
Problem Possible cause Remedial action
LED is not lit No power supply Check the electrical connections
LED flashes
sporadically
white
The power supply collapses periodically device software reboots each time
Select power supply with adequate power
Check cable for possible lose connections
LED flashes red
/ LED illuminates
red
The residual ripple of the supply voltage is too
high
Use power supply with a smooth output
voltage at the required power
After eliminating the fault, restart the device
for normal operating
(isolate from power supply)
Temperature too high Observe max. ambient temperature /
medium temperature; if required reduce duty
cycle (see derating curve)
When activating standard:
After eliminating the fault to cancel the red
flashing LED, restart the device (isolate from
power supply)
When activating position controller and
process controller:
If the device temperature drops below the
set limit after cooling, the fault is automati-
cally deleted by the device
Standard signal is < 4 mA; cable break Check cable for possible lose connections
Fault with position measuring system Check cables in the device for possible
loose connections
Communications failure büS/CANopen Check cables for possible loose
connections
No flow rate
available
The set-point value is below the limit for the
zero point shut-off
Increase set-point value
Valve opens even
though it should
close
Operating direction of the set-point value has
been set incorrectly
Change direction of the set-point
Motor is making
an unusual
droning noise
Gearbox or motor blocked Return device to the manufacturer to have
the fault repaired
Valve is not
opening / closing
correctly
Low power function activated; motor torque
for medium pressure too low
Deactivate low power function
Valve is not
sealed
Dirt between seal and valve seat Install dirt filter and return device to the
manufacturer for cleaning
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Spare parts
Type 3280, 3285
10 SPARE PARTS
CAUTION!
Risk of injury and/or damage by the use of incorrect parts.
Incorrect accessories and unsuitable spare parts may cause injuries and damage the device and the surrounding
area.
▶ Use original accessories and original spare parts from Bürkert only.
10.1 Accessories
Bürkert-Communicator software can be found on the Internet at www.burkert.com
For other accessories see data sheet on the Internet.
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Packaging and transport
Type 3280, 3285
11 PACKAGING AND TRANSPORT
NOTE!
Transport damage.
Inadequately protected devices may be damaged during transportation.
• Protect the device against moisture and dirt in shock-resistant packaging during transportation.
• Prevent the temperature from exceeding or dropping below the permitted storage temperature.
• Using protective caps, protect the electrical interfaces from damage.
12 STORAGE
NOTE!
Incorrect storage may damage the device.
• Store the device in a dry and dust-free location.
• Storage temperature: -20 °C...+70 °C.
13 DISPOSAL
NOTE!
Damage to the environment caused by parts contaminated with medium.
• Dispose of the device and packaging in an environmentally friendly manner.
• Observe applicable disposal and environmental regulations.
Observe the national waste disposal regulations.
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