Burkert 1094 Series User manual

Operating Instructions
Bedienungsanleitung
Instructions de Service
Type 1094
Control electronics for Proportional valves
Ansteuerelektronik für Proportionalventile
Electronique de pilotage pour les vannes proportionelles

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous resérve de modification techniques.
© 2002 Bürkert Werke GmbH & Co. KG
Operating Instructions 0507/12_EU-ML_00803037

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Contents:
1 GENERAL SAFETY INSTRUCTIONS 2
2 SYMBOLS USED 2
3 TECHNICAL DATA AND FUNCTION OF THETYPE
1094 CONTROL ELECTRONICS 3
4 INSTALLATION AND SETTING INSTRUCTIONS 7
4.1 Connection combinations of valves and electronics 7
4.2 Setting up the electronics 8
4.2.1 DIP-switches 8
4.2.2 Setting the DIP Switches for the 1094 PHR type 9
4.2.3 DIP switches settings withType 1094 PHR
(Order no. 154463) 10
4.2.4 Setting the DIP switches for the 1094 PMRType 10
4.2.5 Connecting the electronics to the valve 11
4.2.6 De-activation of zero-point switching using the
DIP switches 11
4.2.7 Start of flow 12
4.2.8 Maximum flow 12
4.2.9 Ramp 13
4.2.10 Zero point switch-off 13
4.3 Standard setting values 14
4.4 Connection plan for Type 1094-PHR standard rail electronics 16
4.5 Connection plan for Type 1094-PMR cable head electronics 17
Control electronics
Type 1094
for Propotional valves of the types
2821, 2832, 2834, 2836, 6021, 6022, 6023, 6024, 6223

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1 GENERAL SAFETY INSTRUCTIONS
To ensure that the devices function correctly, and that they have a long service
life, please comply with the information in these Operating Instructions, as well
as the Application Conditions and the permissible values that are specified in the
data sheets for the proportional valve used, and for the type 1094 electronic
system:
•when planning the application of the device, and during its operation, observe the
general technical rules;
•observe the relevant accident prevention and safety regulations applicable for
electrical equipment throughout the operation, maintenance and repair of the device;
•note that lines and valves must not be disconnected from systems that are under
pressure; always switch off the voltage supply before working on the system;
•take suitable measures to prevent unintentional operation or impermissible
impairment;
•if these instructions are ignored, no liability will be accepted from our side, and the
guarantee on the device and on accessories will become invalid.
NOTE Approvals such as Ex, UL, UR, CSA, DVGW etc., will be
indicated on the rating plate, or by a special label.
2 SYMBOLS USED
In these Operating Instructions, the following symbols are used:
indicates a working step that you will have to carry out
ATTENTION! indicates information which must be followed. Failure to do
this could endanger your health or the functionality of the
device
NOTE indicates important additional information, tips and
recommendations

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3 TECHNICAL DATA AND FUNCTION OF THE TYPE 1094
CONTROLELECTRONICS
• Type 1094 control electronics for driving the Type 6021, 6022, 6023, 6024, 6223,
2821, 2822, 2832, 2834 and 2386 proportional valves
• specially designed for these valve types: ensures an optimal function of these valve
types
• converts an external standard signal into a PWM signal, with which the opening of the
valve can be continuously varied
• the frequency of the PWM signal can be adjusted to match the valve used
• standard signal inputs can be selected from 0-10V, 0 - 20 mA or 4 - 20 mA
• can be delivered in three designs:
a) Type 1094-24/=-PHR-E06-000
- separate electronics in a housing for standard rail mounting to
DIN EN 50 022
- can be used for all types of valve listed (except 2822) and for different standard
signal inputs
- selection of the valve type and the standard signal inputs via DIP switch
(see. 4.2)
b) Type 1094-24/=-PHR-... (Order no. 154463)
- separate electronics in housing for mounting on standard rail to DIN EN 50 022
- may be used for proportional valve type 2822
- choice of standard signal input
c) Type 1094-24/=-PMR-...
- plug-in design: integrated into the cable plug housing
- suitable for valve types 6022, 6023, 6223, 6024, 2832, 2834 and 2386
- quote desired standard signal input when ordering (component insertion variants)
- depending on the type of valve, two different PWM frequencies can be selected

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• by means of the two potentiometers R1and R2(see connection diagram), these key
values of the coil current can be optimally adjusted to the pressures in the respective
applications (see 4.3):
- zero-point potentiometer R1for the adjustment of the coil current I1for the lower
value of the control signal, and thereby the start of valve opening
- amplification potentiometer R2for setting the gradient of the I(U) characteristic
and thereby the maximum current I2or the attainable flow (for maximum standard
signal, e.g., 10V) (see Diagram 1)
• the zero-point switch-off guarantees that the valve will close completely with an input
signal < 2% of the maximum value; the coil current will thereby be electronically set to
zero for input signals below this threshold (e-g., 0.2 V for standard signal input 0 ..
10V) (Diagram 1);
this zero-point switch-off can be de-activated via a DIP switch, e.g., for the simplest
settings of the start of opening of the valve using potentiometer R1
• integrated current regulation for compensation of the coil heating
• continuous variation of the opening of the valve, and thereby the fluidic output
dimension (e.g., flow), is possible by changing the effective coil current (via the
switching relationship of the output PWM signal);
the current values at which the valve starts to open (I1) or at which it is just fully
opened (I2) depend on the pressure relationships in the actual application
Diagram 1: I (U)
characteristic

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• LED for displaying the operational status of the valve
LED lights up for - current flow through the valve solenoid
LED does not light up for - no operating voltage
- input signals below 2% and zero-point switching
activated
• Operating voltage: 24 VDC
• Protection class: IP 65 for Type 1094-PMR plug-in control electronics (cable plug
electronics)
• ramping potentiometer R3for the adjustment of a delay time within the range of 0 to
10 s, in order to dampen sudden changes of the set-value (increasing and
decreasing ramps have the same delay)
• monitor output for testing the momentary coil current (1 mV monitor signal = 1 mA coil
current); this current is, for example, useful when setting the current values I1and I2
(Par. 4.2)
NOTE
ATTENTION!
We recommend the use of the Bürkert Power Supply Type
1610 for the voltage supply, as this has been specially
designed for the Type 1094 electronics.
If you make use of another power supply, maintain the
operating voltage range between 24 V to and a maximum of
28V, together with a residual ripple < 10%.
If you are using a switching power supply, take into
consideration their tendency to oscillate with inductive loads
(e.g., the solenoids in the valves).

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Drive electronics Type 1094-PHR (Order no. 154463) in
connection with proportional valve Type 2822
For operation with Type 2822, one should work exclusively with
the drive electronics Type 1094 in the design PHR (Order no.
154463).
ATTENTION!
Proportional valve Type 2822 has a different construction to the valve types listed
previously in these instructions. In particular, the valve armature is supported by shaped
springs, so that the slip-stick effect is absent in this device.
In principle, the valve can be driven both with a variable DC (e.g. 0...24V DC, no noise in
this case) or a PWM signal. In the latter case, the PWM signal has only the function of
varying the magnetic force via the pulse-duty factor. A dither motion, as with a core
supported by a sliding ring, does not have to be generated.
Since the solenoid armature with Type 2822, because of its design, has a higher
dynamic than the other proportional valves, the frequencies available with the standard
versions of the drive electronics Type 1094 are too low; in operation, they would lead to
increased noise and a poorly defined opening behaviour. A version of the electronics
Type 1094, specially developed for Type 2822 in the design PHR (Order no. 154463),
enables higher PWM frequencies to be set that are adapted to this valve.

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Vale type Bürkert appliance socket Control electronics
6021 2506 1094-PHR
6022, 6023, 6024, 6223
with tag connectors
2508 1094-PHR
none 1094-PMR
2821 1051 1094-PHR
2822
with wires
none 1094-PHR*
2822
with connector flags
1051 1094-PHR*
2832, 2834, 2836
with tag connectors
1050 1094-PHR
none 1094-PMR
4 INSTALLATION AND SETTING INSTRUCTIONS
4.1 Connection combinations of valves and electronics
* For proportional valve Type 2822, use only drive electronics Type 1094-
PHR with Order no. 154463
NOTE The use of the Bürkert Type 1610 power supply is
recommended for all combinations!
When connecting the PHR electronics using the appliance
sockets 2506, 2508, 1050 or 1051, note that the cable length
must be less than 50 m; with longer cables, the 0 - 10V control
will no longer produce a full opening of the valve! This can also
apply to other signals.
The direction of the cable run can be changed in 4x 90° steps
when using the cable plug electronics type 1094-PMR.

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Carefully insert the blade of the screwdriver
under the manifold, and lever it out
(Diagram 2).
Turn the manifold to the desired position.
Insert the manifold into the housing until it
latches in.
Diagram 2: Turning the manifold
4.2 Setting up the electronics
4.2.1 DIP-switches
Select the PWM frequency and the desired standard signal input (only applies to the
standard rail electronics Type 1094-PHR) corresponding to the listed valve types.
NOTE The standard signal input must be determined before connecting
the operating voltage.
ATTENTION!
Only work on the equipment when all voltages have been
removed!
Ensure that the cables ends do not become twisted!
The apparatus socket may only be pushed onto the
connector flags with the fixing screw assembled.