Burkert 1094 Series Manuale utente

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.

Operating Instructions 0507/12_EU-ML_00803037

1094 - 1

english

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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2 - 1094

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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

1094 - 3

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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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4 - 1094

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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:

(U)

characteristic

1094 - 5

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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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6 - 1094

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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.

1094 - 7

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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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8 - 1094

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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.

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