Service ..................................................................................................... 19
Service intervals..................................................................................... 19
Correction of faults ............................................................................... 19
2 - 0258
GENERAL NOTES
Symbols
The following symbols are used in these operating instructions:
Marks a work step that you must carry out.
ATTENTION!
NOTE
marks notes on whose non-observance your health or the
functioning of the device will be endangered.
marks important additional information, tips and
recommendations.
Trademarks
Ultramid® is a registered Trademark of BASF.
Grivory® is a registered Trademark of EMS-Grivory.
Safety notes
Please observe the notes in these operating instructions together with the
conditions of use and permitted data that are specified in the data sheet, in
order that the devices will function perfectly and remain operable for a long
time:
• Keep to standard engineering rules in planning the use of and operating
the device!
• Only use the device as intended, for the application agreed with the
Bürkert company.
• Interference with the device is only allowed by specialist personnel using
suitable tools!
• Observe the current regulations on accident prevention and safety for
electrical devices during operation, maintenance and repair of the device!
• Before interfering with the system, always switch off the voltage!
• Avoid undue mechanical force and stress when installing the motor control
valve and when connecting the lines to the hose connections.
• Take suitable precautions to prevent unintended operation or damage by
unauthorized action!
• Only use the device in its original configuration!
• On non-observance of this note and unauthorized interference with the
device, we will refuse all liability and the guarantee on device and
accessories will become void.
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0258 - 3
Application Guidelines
The modular 2 and 3-way motorized regulating valve of Type 0258 is
preferably used as a control element for hot water or coolant circuits in buses,
goods vehicles, floating and rail vehicles, as well as in machine tool
construction. The configuration that is required for your special application
will be drawn up by our Field Service employees. Only use the Type 0258
modular 2 and 3-way motor control valve for the applications agreed with the
Bürkert company. Any other use will have to be agreed with the Customer
Service of the Bürkert company.
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Scope of delivery
Immediately after receipt of a shipment, make sure that the contents are
undamaged and match the scope of delivery stated on the packing slip.
In case of any discrepancies, please contact our Call Center:
or your local Bürkert Sales Centre immediately.
Bürkert Fluid Control Systems
Call Center
Chr.-Bürkert-Str. 13-17
D-76453 Ingelfingen
Tel. : 07940-10111
Fax: 07940-10448
E-mail: info@de.buerkert.com
Warranty conditions
This document contains no warranty statements. In this connection we refer
to our general sales and business conditions. A prerequisite for validity of the
warranty is use of the device als intended with observance of the specified
conditions of use.
ATTENTION!
4 - 0258
The warranty only extends to the freedom from faults of the
motor control valve and its components.
No liability will be accepted for consequential damage of any
kind that may arise from failure or malfunctioning of the
device.
Approval
Devices that carry the e1 marking have been approved by the Federal Office
for Motorised Transport under the type approval number
e1*72/245*95/54*3187*00
and will be brought into circulation with the indicated approval designation.
1
e
023187
You can obtain an excerpt from the type approval from the address below
Bürkert Werke GmbH & Co KG
Zulassungsbeauftragter
Christian Bürkert Str.13-17
74653 Ingelfingen
english
0258 - 5
SYSTEM DESCRIPTION
Application area
The modular 2 and 3-way motorized regulating valve of Type 0258 is
preferably used as a control element for hot water or coolant circuits in buses,
goods vehicles, floating and rail vehicles, as well as in machine tool
construction.
Design
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Emergency manual override
(optical position indicator)
The Type 0258 motorised regulating valve has a modular design, and is
mounted individually or assembled into blocks. Up to 4 valves can be
combined in one block. It can be used as either 2 or 3-way valve, as desired,
and contains ceramic sealing elements, while the valve body is made from
plastic.
The electrical rotary actuator with d.c. motor that is used here consists of
either a maintenance-free flat drive1) (LC) with an AMP plug, or of a powerful,
maintenance-free spur drive2) (Mod) with a magnetic clutch coupling and
Hirschmann plug (options possible), an emergency manual override with an
optical position indicator and one or more valve modules.
In connection with the emergency manual override, the drives have a rotation
angle of 180°. The drives may not be operated without emergency manual
override, as the position feedback can otherwise become maladjusted.
1)
2)
Electrical connection
(AMP or circular
connector according
to DIN 43651,
Hirschmann)
Flat drive (LC): referred to as "LC" in the following text
Spur drive (Mod): referred to as "Mod" in the following text
Motor drive powerful spur drive with
magnetic coupling (Mod) or
flat drive (LC), with
position feedback in each
case
Valve module
Function
By means of a shaft, the drive moves a regulating disk over a fixed disk made
from ceramic oxide, and thereby alternately closes the valve seats A and B
with a sliding transition.
The flow values (2-way), mixing or distribution ratios (3-way) are continually
variable depending on the rotation angle.
The position feedback takes places using a potentiometer.
6 - 0258
Control functions of the valves
Control function I
A
2-way valve for continuous control of the flow rate in
M
outlet port A,
motor-driven, holds position with no power
P
Control function E
P
3-way valve for continuous mixing of the incoming flows A
M
and B to the port P,
motor-driven, holds position with no power
A B
Control function F
B
A
3-way valve for continuous distribution of the incoming
M
flow P to the outlet ports A and B,
motor-driven, holds position with no power
P
Flow characteristic curves
The flow
shown in the following diagrams. The Kv set-value of 1 m 3 is being prepared.
1)
characteristic curves for the Kv set-values of 3 m3 and 6 m3 are
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Flow characteristic curves2) Kv-Sollwert = 3 m
/h]
3
Kv value [m
Potentiometer3) [%]
1)
Flow: Kv value water [m³/h],
port.
2)
only Mod drive type
3 )
in relation to the total stroke of the potentiometer = 100 %
4 )
Pressure quoted in [bar]: over-pressure with regard to atmospheric pressure
measurement at +20 °C, 1 bar
3
3 )
pressure at valve inlet port and free outlet
0258 - 7
Flow characteristic curves1) Kv set-value = 6 m
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1)
2)
Marking
The motorised regulating valve is marked with two labels.
The rating label for the complete device (valve block) is located on the lower
left side. The upper line gives the device specification key "SYST-0258", while
the lower line gives the identity number and the encoded date of
manufacture.
Every drive also has its own rating plate with the following content:
max. slider currentStandard design:
of potentiometerConduction plastic design:
max. power inLC: 7.5 V (Potentiometer terminals 1 and 3)
potentiometerMod: 10 V(Potentiometer terminals 4 and 6)
max. power inLC: 0.25 W / 40 °C
potentiometer
Rated operating24 V DC
voltage
Voltage tolerance±10 %
Power consumptionLC: 4.8 W
5)
Mod: approx. 28 s at 24 V DC
and AMP contact 962885-1
Mod: circular plug according to DIN 43651
(6-pole and earth)
Mod: Potentiometer 1 kΩ linear (optional 5 kΩ
linear and models in conducting plastic)
Protective resistance Rs = 6.8 kΩ
≤≤
≤4 mA
≤≤
8)
))
9
)
))
Mod: 0.5 W / 40 °C
≤≤
≤65 µA
≤≤
Mod: 3 W
6)
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7)
LCLC
NOTELCLC
LC: Max. number of operations (at nominal torque) = 100,000
under laboratory conditions, 20 °C and 1 s drive time in each
case over the complete adjustment range.
ModMod
Mod: Max. number of operations = 400,000 under laboratory
ModMod
conditions, 20 °C and 1 s drive time in each case over the
complete adjustment range.
1 )
Pause time with change of rotation 0.4 s.
2 )
Increased wear with continuous operation of the motor.
3 )
limited gas seal
4 )
Impurities (e.g., fluff etc.) should be pre-filtered, otherwise the function of the valve could be impaired.
5 )
At 24 V DC smoothed. Pulsed drive increases the rotation time (see also 8) )
6 )
dependent on pressure/load
7 )
Higher currents considerably reduce the service life!
8 )
Higher temperatures limit the max. power loss of the potentiometers.
9 )
min. pulse length (the min. pulse length increases at no-load/ at pressure/load):
for LC: approx. 100 ms / for Mod.: approx. 100 ms
0258 - 13
Electrical connections
ATTENTION!
NOTE
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Plug configuration Mod
Rs = 6.8 kΩ
P1 = 1.0 kΩ / 5.0 kΩ
Plug configuration LC
P1
6
1
5
2
4
R
3
s
1234
The operating voltage and frequency of the electrical supply
must be the same as quoted on the rating plate of the drive.
The voltages and currents must not lie outside the permitted
operating range.
With a pulsed drive and nominal voltage, the pulse duration
should not fall below 100 ms.
PolePole
Pole
PolePole
M
configurationconfiguration
configuration
configurationconfiguration
left runningplusminus
Pin 1Pin 1
Pin 1
Pin 1Pin 1
Pin 2Pin 2
Pin 2
Pin 2Pin 2
right runningminusplus
PolePole
Pole
PolePole
configurationconfiguration
configuration
M
M
configurationconfiguration
left runningminusplus
Pin 4Pin 4
Pin 4
Pin 4Pin 4
Pin 6Pin 6
Pin 6
Pin 6Pin 6
right runningplusminus
65
P1 = 5.0 kΩ
14 - 0258
OPERATING AND DISPLAY ELEMENTS
Emergency manual override
Coupling bell, firmly
connected to the
drive
Button, separates
the drive from the
valve when pressed
in
Emergency manual
override, adjustable,
connected to the
rotatable valve
With the emergency manual override, you can adjust the valve regardless of
the position of the drive.
Press the button in (see illustration) to separate the drive from the valve.
Turn the emergency manual override into the desired position while holding
the button in.
If the drive is driven over the complete rotary range, the emergency manual
override latches in again in the neutral position.
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NOTE
The position query generally takes place on the basis of the
drive position, and not on the position of the valve.
Optical position indicator
The optical position indicator results from the position of the emergency
manual override.
Turn the emergency manual override the the right: outlet port A closes and
outlet port B opens at the same time.
Turn the emergency manual override to the left, outlet port B closes and
outlet port A opens.
The transition is flowing.
0258 - 15
PUTTING INTO OPERATION
Safety notes
ATTENTION!
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Before putting the motorised control valve into operation,
ensure that
• the electrical power supply corresponds to the voltage
• the electrical connections have been carried out as
• the motorised regulating valve is only used in its original
• all hoses are securely connected to the hose
ASSEMBLY
NOTE
You can install the motor control valve in any position, but preferably with
the drive at the top.
Single blocks are secured with tie rods or angle brackets, and dual and quad
blocks with angle brackets.
If connection sizes or angled connections other than those set
up in the factory are required, the valve must be converted by
the factory. This also applies to changes to the serial
connection of the modules.
OPERATION AND FUNCTION
quoted on the rating plate,
described in the TECHNICAL DATA chapter.
configuration and must not be dismantled,
connections. Danger of scalding!
Safety notes
ATTENTION!
16 - 0258
Observe the following during operation
• compliance with the general technical rules!
• the valid accident prevention and safety regulations for
electrical device.