Argo-Hytos PRM7 User manual

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Proportional Directional Control Valve PRM7
Obsah
1. General technical parameters ............................................................................................................................... 2
1.1. Introduction ......................................................................................................................................................... 2
1.2. Valves Usage ........................................................................................................................................................ 2
1.3. Limited Warranty................................................................................................................................................... 2
1.4. Used Symbols ....................................................................................................................................................... 2
1.5. Caution ............................................................................................................................................................... 2
1.6. Service, Maintenance, Repairs ................................................................................................................................. 3
1.7. Basic Setting......................................................................................................................................................... 3
2. Technical Description ............................................................................................................................................. 3
2.1. Basic Parts............................................................................................................................................................ 3
2.2. Technical Parameters.............................................................................................................................................. 3
3. Design of Valves .................................................................................................................................................... 4
3.1. Configuration E01 (directly operated proportional directional control valve).................................................................... 4
3.2. Configuration E02S01 – (proportional directional control valve with internal spool position feedback)................................ 4
3.3. Configuration E03 – (proportional directional control valve with external feedback)......................................................... 4
3.4. Configuration E04S01 – (proportional directional control valve with internal spool position feedback and external feedback . 4
4. Valve Assembly ..................................................................................................................................................... 5
5. Electrical Connection ............................................................................................................................................ 5
5.1. Connection of Power Supply and Command Signal to the Valve Electronics ................................................................... 5
5.2. Connection of a Cable for Electronics Parameters Setting............................................................................................ 5
5.3. Connection of the External Feedback Cable .............................................................................................................. 6
5.4. Putting into Operation ........................................................................................................................................... 6
6. Digital Integrated Electronics .............................................................................................................................. 6
6.1. Electronics Block Diagram....................................................................................................................................... 6
6.2. Setting of the Electronics Parameters ....................................................................................................................... 7
7. Configuration Program PRM7Conf....................................................................................................................... 7
7.1. Basic Description ................................................................................................................................................... 7
7.2. Installation ........................................................................................................................................................... 7
7.3. User Interface ....................................................................................................................................................... 7
7.3.1. Main Menu .................................................................................................................................................... 8
7.3.2. Toolbar .......................................................................................................................................................... 8
7.3.3. Status Line ..................................................................................................................................................... 9
7.3.4. Desktop ......................................................................................................................................................... 9
7.4. Communication with the Valve Electronics .............................................................................................................. 10
7.4.1. Communication Setting ................................................................................................................................. 10
7.4.2. Communication Establishment ........................................................................................................................ 10
7.4.3. Uploading Data from the Valve Electronics ........................................................................................................ 11
7.4.4. Downloading Data to the Valve Electronics........................................................................................................ 11
7.4.5. Status of the Valve Electronics ......................................................................................................................... 11
7.4.6. Reset of the Valve Electronics .......................................................................................................................... 11
7.5. Possibilities of Setting the Valve Electronics Parameters ............................................................................................. 11
7.5.1. Parameters table ........................................................................................................................................... 11
7.5.2. Block Diagram .............................................................................................................................................. 12
7.5.3. Setting According to the Ordering Code ........................................................................................................... 12
7.5.4. Setting from a Prepared Configuration File ....................................................................................................... 13
7.6. Block Diagrams and Tables of Parameters of Basic Configurations .............................................................................. 13
7.6.1. Configuration E01 ......................................................................................................................................... 13
7.6.2. Configuration E02S01.................................................................................................................................... 14
7.6.3. Configuration E03 ......................................................................................................................................... 16
7.6.4. Configuration E04S01.................................................................................................................................... 17
7.7. Basic Configuration Blocks Detailed Description ....................................................................................................... 19
7.7.1. Directional Valve Configuration ....................................................................................................................... 19
7.7.2. Command Signal Type Selection ...................................................................................................................... 19
7.7.3. Command Signal Polarity ............................................................................................................................... 19
7.7.4. Threshold .................................................................................................................................................... 20
7.7.5. Ramp Functions ............................................................................................................................................ 20
7.7.6. Command Signal Gain ................................................................................................................................... 20
7.7.7. Dead Band Compensation ............................................................................................................................. 21
7.7.8. Current Limiting............................................................................................................................................ 21
7.7.9. Dither .......................................................................................................................................................... 21
7.7.10. Internal and External Feedback Controllers ...................................................................................................... 22
7.7.11. Type of External Feedback Signal.................................................................................................................... 22
7.7.12. External Feedback Signal Polarity.................................................................................................................... 22
7.7.13. External Feedback Signal Offset ..................................................................................................................... 23
7.7.14. External Feedback Signal Gain ....................................................................................................................... 23
7.7.15. Linearization Function ................................................................................................................................. 24
7.8. Measurement ..................................................................................................................................................... 24
Content
User Manual

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1. General technical parameters
1.1. Introduction
Proportional directional control valves with digital integrated electronics are available in following configurations (see catalogue for more details):
›E01 – directly operated proportional directional control valve (without a feedback)
›E02S01 - proportional directional control valve with internal spool position feedback
›E03 - proportional directional control valve with external feedback
›E04S01 - proportional directional control valve with internal spool position feedback and external feedback
In configurations E01 and E02S01 the proportional directional control valves can be used for the direction and flow rate control (position or speed
control). In configurations E03 and E04S01 they can be used, according to the kind of the scanned physical quantity, for the direction and flow rate
control (position or motion speed), eventually for pressure control (force or torque).
The proportional directional control valves operation at any device must be performed in accordance with recommendations of the producer
ARGO-HYTOS s.r.o. and safety or other regulations given by the particular country legislature.
The producer takes no responsibility for health or property damages caused by operating the hydraulic or other systems equipped
with the proportional directional control valve made by ARGO-HYTOS s.r.o. In case of not observing the rules, wrong manipulation, false
interpretation or misunderstanding, the responsibility and liability remains on the user.
The directional control valve can be installed and put into operation only by a trained and authorized .person
When using the control valves in applications with high safety requirements it is necessary to take a measure for the case of a failure which
disconnects the power supply voltage, eventually the valve command signal. The directional control valve then returns back to the central position
automatically.
When installing a directional control valve, it is necessary to comply with schedule and fulfillment of the individual works. Before putting
into operation it is necessary to test all electrical and hydraulic connections once more. To prevent collisions, before putting into operation
all the safety equipment must be functional. It is necessary to observe all the safety rules.
1.2. Valves Usage
1.3. Limited Warranty
1.4. Used Symbols
1.5. Caution
This symbol warns that there is a danger for persons, machines, material or living environment.
This symbol calls attention to advice and information.
The parts of the valve may be warm during the operation.
After switching on the electronics power supply, the command signal will be active after a short interval (1 – 2 s). It is necessary
to care that command signal does not cause any undesirable valve function.
The proportional directional control valve PRM7 consists of a cast iron body,
a special cylindrical spool, two centering springs with supporting washers,
one or two proportional solenoids, a position sensor, eventually a box
with digital electronics. The position sensor measuring system consists
of a differential transformer with a core and the evaluation electronics
in the hybrid design. The proportional directional control valve PRM7
is produced in three basic sizes - Size 4, Size 6, Size10.
In design with integrated electronics, the proportional directional control
valve is equipped with an electronics box which is fixed to any solenoid
together with the position sensor the outlet of which is directly connected
to it by a cable. In design with two solenoids, the opposite solenoid
is connected with the electronics box by means of a cable terminated
with connector EN 175301-803-A. Coils can be rotated round the longitudinal axis by ±90°, including the electronics box.
Connecting of power supply voltage, command signal, spool position sensor control outlet (if it is there) and +10V DC output voltage is accomplished
through a seven-poles connector M23. Connecting of external feedback is accomplished with the help of a five-poles connector M12x1 where there is,
except of external feedback input, also the power supply voltage +24V for the external sensor.
The output current to solenoid coils is controlled by means of PWM. Electronics is equipped with internal current feedback; the output current can be
modulated by a dither signal. Individual function parameters are set by software with the help of a computer connected
to the proportional directional control valve through the serial interface RS 232.
Factory configuration of the proportional directional control valve depends on its type of construction. The configuration with the external feedback
has to be consulted with the producer.

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Do not try to repair the proportional directional control valve on your own. After a repair, particular settings must be made which can be
accomplished only by a qualified person. Send the directional control valves which has to be repaired to the producer’s address or to the trade
representation address.
In case of a claim it is necessary to deliver the type number and the serial number. These data will push the claim forward and ensure the fast
and reliable repair.
In case of detecting a defect or a failure, your seller will be happy to give you a phone or a written advice. We offer experienced and skilled experts
for repairs and the maintenance.
Proportional directional control valves are ready for instant use from the producer. The directional control valve digital electronics basic setting is made
by the producer. In configurations E01 and E02S01 the directional control valve is fully functional and there is no need for any interference
into the electronics setting. In configurations E03 and E04S01 it is necessary to set the electronics parameters which ensure the correct function
of the directional control valve in the external feedback.
Basic parts are the same for all configurations offered by the producer but their
application differs according to the respective configuration.
Figure 1. Basic parts of the proportional directional control valve (lay-out of configuration E04S01)
Figure 1 shows the proportional directional control valve PRM7 and its basic parts.
The directional control valve consists of:
›the body with the inserted spool (1)
›proportional solenoids (2)
›the spool position sensor (3)
›the control digital electronics (4)
2. Technical Description
1.6. Service, Maintenance, Repairs
1.7. Basic Setting
2.1. Basic Parts
2.2. Technical Parameters
Basic directional control valve parameters
Nominal size Size 04 06 10
Installation dimensions DIN 24 340 and ISO 4401
Maximum working pressure in outlets P, A, B bar (PSI) 320 (3640)
Maximum working pressure in outlet T bar (PSI) 100 (1450) 160 (2320) 220 (3190)
Pressure liquid Mineral oil (HM, HV) according to DIN 51524
Fluid working temperature range (NBR/Viton) °C (°F) -30... +80 / -20 ... +80 (-22 ... +176 / -4 .... +176)
Working viscosity range mm2/s (SUS) 20 ... 400 (98 ... 1840)
Specified fluid cleanliness level Grade 21/15 according to ISO 4406: 1987,
recommended filter’s filtering capability β10 ≥75.
Nominal flow rate at ∆p = 10 bar (145 PSI) l/min 4, 8, 12 5, 8, 15, 30 30, 60
(GPM) (1.06, 2.11, 3.17) (1.32 , 2.11, 3.96, 7.93) (7.93, 15.85)
Basic electronics parameters
Power supply voltage with protection against reversing of polarity V DC 11,2…28 (residual ripple < 10%)
Input: command signal +/-10 V, 0...10 V, +/-10 mA, 4...20 mA, 0...20 mA, 12 +/- 8 mA
Input: spool position V 0…5
Input: external feedback 0...10 V, 4...20 mA, 0...20 mA
Resolution of A/D transducers bit 12
PWM frequency kHz 18
Output: solenoid coils Two final stages with pulse width modulation max. 3.5 A
Cycle period of the controllers µs 170
Setting of parameters With the help of PC (RS232) and user’s software PRM7Conf
CAN serial interface On inquiry
Basic parameters Range, marking
General
Environment temperature °C (°F) -20 ... +50 (-4 .... +122)
Electric overlap grade IP 65
Vibrations Oscillations, sine-wave according to IEC 68-2-6
Shocks according to IEC 68-2-27
Disturbance resistance
Conduit impact according to EN 61000-4-4
HF exposure according to EN 61000-4-3
HF conduit supply according to EN 61000-4-6
Interference emission Emission related to conduit according to EN 55011
Radiated emission according to EN 55011

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Figure 1 shows the proportional directional control valve PRM7 and its basic parts.
The proportional directional control valve in the configuration E01 (direct operation), see Figure 2, can be used, according to the spool type used,
for the oil direction and flow rate control (position or speed control).
The proportional directional control valve in the configuration E02S01 (spool position feedback), see Figure 3, can be used, according to the spool
type used, for the oil direction and flow rate control (position or speed control). Thanks to the spool position feedback, the valve, in comparison
to the configuration E01, provides higher dynamic parameters, features minimal hysteresis and high sensitivity to the command signal change.
The proportional directional control valve in the configuration E03 (external feedback), see Figure 4, can be used, according to the measured
physical quantity, for the oil flow direction and flow rate control (position or speed rate control), eventually pressure control (force or torque
control).
The proportional directional control valve in the configuration E04S01 (spool position feedback and external feedback), see Figure 5, can be used,
according to the measured physical quantity, for the oil flow direction and flow rate control (position or speed control), eventually pressure control
(force or torque control). The presence of the internal feedback enables, to a certain extent, to influence the dynamic behavior of the proportional
directional control valve with regard to requirements of the actual application
3. Design of Valves
3.1. Configuration E01 (directly operated proportional directional control valve)
3.2. Configuration E02S01 – (proportional directional control valve with internal spool position feedback)
3.3. Configuration E03 – (proportional directional control valve with external feedback)
3.4. Configuration E04S01 – (proportional directional control valve with internal spool position feedback and external feedback
Figure 2. Proportional directional control valve with two coils In the configuration E01 – direct operation
Figure 3. Proportional directional control valve with two coils in configuration E02S01 - spool position feedback
Figure 4. Proportional directional control valve in configuration E03 – external feedback
Figure 5. Proportional directional control valve with two coils in configuration E04S01 - spool position feedback and external feedback
Model Code
example E01
Symbol
Model Code
example E02S01
Symbol
Model Code
example E03
Symbol
Model Code
example E04S01
Symbol

7
6
3
1
2
5
4
K1
3
1
2
4
K2
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Valves are designed for installation according to DIN 24 340 and ISO 4401. Make the assembly according to the producer’s instructions written
in the documentation that is a part of each valve package.
The digital integrated electronics is located in a plastic box situated directly on the proportional directional control valve solenoid. The electronics is
connected to this solenoid with the help of connectors which are placed inside the box. The second solenoid is connected to the electronics
by a cable and a connector DIN 43650. Connections of the control system, power supply, spool position feedback and external feedback,
PC and solenoids power supply are shown in Figure 6.
4. Valve Assembly
5. Electrical Connection
Figure 6. Proportional directional control valve PRM7 electronics box
Figure 7. Connecting connector M23
Figure 9. The cable designed for the connection
of the proportional directional control valve PRM7 to PC
Figure 8. Connecting connector M23 positioned on the electronics box
Figure 10. Connector M12, designed for the connection to PC, positioned on the electronics box
Solenoid Power Supply
Control, Power Supply
Connection with PC
External Feedback
Spool Position Feedback
The connection of the power supply and the command signal to the valve electronics will be made by means of a seven-poles connector M23 shown
in Figure 7. M23 connector is not a part of supply and it is necessary to order it separately according to the producer’s catalogue.
The significance of individual contacts is in the Figure 8 showing the connector situated on the electronics box.
Connecting of the computer to the valve electronics is performed by means of a special cable (see Figure 9). The cable is equipped with a four-pole
connector M12 for the connection to the valve and a nine-pin connector CANNON 9 for the connection to the computer RS232 serial port. The cable
is not a part of supply and is to be ordered separately according to the producer’s catalogue. The significance of individual contacts is in the Figure 10
showing the connector situated on the electronics box.
5.1. Connection of Power Supply and Command Signal to the Valve Electronics
5.2. Connection of a Cable for Electronics Parameters Setting
Connector K1- type M23 (male)
PIN Technical data
1 Power supply 11,2…28V DC
2 Ground (power supply)
3 Control signal
4 Ground (signal)
5 Reference voltage +10 V DC
6 Spool position sensor signal - copy
7 Protection earth lead (PE)
Connector K2- type M12x1 (male)
PIN Technical data
1 Programming – TxD line of serial interface RS232
2 Programming – RxD line of serial interface RS232
3 Programming – earth
4 Not used
The command signal input resistance:
Voltage signals ≅200 kΩ(+/- 10 V, 0 ... 10 V)
Current signals ≅255 Ω (+/-10 mA, 4...20 mA, 0...20 mA, 12 +/- 8 mA)
Do not connect under the voltage

4
2
1
53
K3
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Figure 11. External feedback cable connecting connector M12 Figure 12. External feedback cable connecting connector M12
Connection of the external feedback (for configurations E03 and E04S01 only) will be performed with the help of a five-pin connector M12 which is
in Figure 11. Except of connecting the signal from the external feedback, the connector enables a connection of supply voltage for an external sensor
as well. M23 connector is not a part of supply and it is to be ordered separately according to the producer’s catalogue. The significance of individual
contacts is in the Figure 12 showing the connector situated on the electronics box.
On the upper part of the electronics box (see Figure 13) are situated the green and red LEDs.
After connecting the supply voltage, the green LED which signals the electric voltage presence, lights up.
The flashing red LED signals an electronics error state. The error state reasons can be following:
›Disconnected connection of the electronics output with the solenoid coil,
›The current command signal is out of the specified range (if there is a set command signal 4-20 mA or 12 +/-8 mA)
›The current external feedback signal is out of the specified range (if there is a set command signal 4-20 mA)
The permanent red LED light signals an internal software problem.
After the error eliminating the electronics can be activated again via disconnecting the supply voltage for a short moment or via electronics reset
from the program PRM7Conf (see the chapter 7).
5.3. Connection of the External Feedback Cable
5.4. Putting into Operation
6.1. Electronics Block Diagram
Connector K3- type M12x1 (male)
Socket Technical data
1Power supply of the external feedback sensor
11,2…28 V DC
2 External feedback signal sensor output.
3 Earth
4 Not used
5 Not used
The command signal input resistance:
Voltage signals ≅200 kΩ(0 ... 10 V)
Current signals ≅255 Ω (4...20 mA, 0...20 mA)
Do not connect under the voltage
At the proportional directional control valve commissioning the necessary safety guidelines must be observed precisely.
To avoid uncontrolled equipment behavior, it is necessary to check all the electrical and hydraulic circuits before the supply voltage
connecting. Particular measures for possible emergency cutoff must be taken.
Green LED Red LED
The digital integrated electronics (see figure 14) is controlled by an internal program (firmware) which is stored in a Flash memory. This program
provides basic electronics functions so that the valve can fulfill the user’s requirements. The producer does not exclude a possibility of a continuous
firmware update with the view of the directional control valves PRM7 functional properties optimization.
The valve electronics is connected to the PC with the help of serial interface RS232. Two lines are used for the connection from this interface; RxD
enabling the data acceptance from the electronics and TxD enabling data entry to the electronics. Basic baud parameters are: baud rate 19,200 bps,
8 data bits, no parity, 1 stop bit.
6. Digital Integrated Electronics
Figure 13. Operation state signaling

1
8
2
3
4
5
6
7
IB
IA
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±10 V 4...20 mA
0 ... 10 V 0...20 mA
±10 mA 12 ± 8 mA
0 ... 10V 0...20 mA
4...20 mA
Nr. Technical data Description
1 Requered value input Resolution
12 bit
2 Real value input 1 2,5 ±2,5 V Resolution
12 bit
3 Real value input 2 Resolution
12 bit
4 A/D transducer
5 Curent beis protection
6 Final stage PWM max. 3,5 A (f=18 kHz)
7Copy of spool
position sensor signal 0 ... 5 V
8 Serial interface RS232
Figure 14. Valve PRM7 digital electronics block diagram
6.2. Setting of the Electronics Parameters
Digital integrated electronics operation parameters are set from the production so that they provide the optimal valve function in terms of its
operational configuration and its static and dynamic properties. In case that this operational parameters setting will not comply with a particular
valve application, it is possible to change the setting with the help of a PC which is connected with the proportional directional control valve by
means of a special cable through the connection port RS232. After the agreement with the producer, the hardware and software needed is supplied
together with the valve.
7.1. Basic Description
7.3. User Interface
7.2. Installation
The program PRM7Conf is designed only for the proportional directional control valves PRM7 digital electronics operational parameters modification.
Its basic features are:
›Minimum requirements for hardware are: Processor: Pentium 433 MHz, Memory RAM: 32 MB, Free HD space: 20 MB, Minimal
screen resolution: 800x600 dpi, Operating system: Windows 98, ME, 2000, XP.
›It enables electronics setting by means of the graphic interface in the form of tables or block diagrams.
›It enables to save the operational parameters setting to *.PRM file.
›It enables to carry out the electronics operational parameters setting with the help of ordering code that is listed in the producer’s
catalogue.
›It enables two operational modes: on-line and off-line.
›It enables signal measuring behind the chosen blocks which set the electronics parameters.
User interface of the program PRM7Conf is shown in Figure 15.
›Its main parts are:
›Main Menu
›Toolbar
›Status Line
›Desktop
Through these parts the program communication can be established easily.
Additionally, it is possible to carry out the valve electronics
setting or to read the status of the valve electronics.
For installation start the setup.exe file from the enclosed CD. This will activate the installer that will lead you through all the installation process.
Installer will download all the necessary program files to locations defined during the installation.
After completing the installation, start the program by PRM7Conf.exe file, which is located in a directory selected by you,
or start the program by PRM7Conf shortcut located in menu Start -> Programs of the operating system Windows.
7. Configuration Program PRM7Conf
Figure 15. Program PRM7Conf work user interface
Red LED
error state
CPU
Flash RAM
Green LED
supply voltage
Power supply
Command
signal
Spool position
signal
supply voltage
Reference voltege ÷10 V
signal without
external feedback
External feedback sensor supply ÷Uc
Uc(11.2-28)V DC

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7.3.1. Main Menu
The main menu is located right in the top of the graphical user interface. Its detail is shown in Figure 16. The often-used items are placed
in the toolbar.
File
This menu enables to work mainly with configuration files (*.PRM files). These files are used for storing the valve electronics setting data. The stored
files could be used for easy setting of the directional control valve electronics or re-writing incorrect data back to initial if the new ones are not
satisfactory. The items of the menu File are:
›Open: The item enables to open *.PRM file.
›Save: The item enables to save *.PRM file.
›Save as: The item enables to save *.PRM file under a different name.
›Print: The item enables to print the electronics parameters out which are set for the chosen configuration.
›Exit: The item enables to quit working with the program PRM7Conf.
Edit
This menu enables easy text transfer between the table cells or edit boxes of the dialog windows. The items of the menu Edit are:
›Cut: The item enables to cut text from a table cell or from an edit box.
›Copy: The item enables to copy text from a table cell.
›Paste: The item enables to insert cut text or copied text into the cell.
Display
This menu enables a suitable choice of the environment (display of the desktop) for editing the valve electronics parameters. The program provides
two ways of electronics settings: through a block diagram or through a parameters table. The block diagram is a graphical representation of various
functions (blocks) of the valve electronics. The parameters table displays all the parameters en bloc and, eventually, it enables their modification.
The items of the menu Display are:
›Block diagram: The item enables to display the block diagram of the chosen configuration.
›Parameters table: The item enables to display parameters table of a chosen configuration.
›Measurement: The item enables to measure signals in the specific nod points of the valve electronics given by its structure.
Directional valve
This menu contains program functions which enable data exchange between the program PRM7Conf and the electronics. Additionally, the menu
enables the valve configuration change. The items of menu Valve are:
›Upload data: The item enables to upload data from the valve electronics to the program.
›Download data: The item enables to download data to the valve electronics.
›Configuration change: The item enables to change the valve electronics configuration according to the ordering code. The program
offers 12 basic configurations in total.
Communication
This menu contains functions which enable program communication with the valve electronics. The individual items of the menu Communication are:
›Setting: The item enables a communication port setting of the RS232 serial interface. Furthermore, the item enables setting
the mode (on-line, off-line) after the program start.
›Status: The item enables to read information in relation with setting of the program communication with the electronics, error
state and the electronics firmware version.
›Reset: The item enables reset of the electronics.
›On-line: The item enables the program connecting to the valve electronics or program disconnecting from the valve electronics.
Help
This menu opens the Help and provides important information about the program PRM7Conf. The items of the menu Help are:
›Content: The item shows the help content.
›About: The item provides information about the program and about its producer.
Figure 16. Main menu of the program PRM7Conf
Figure 17. Toolbar
7.3.2. Toolbar
The toolbar is located right in the top of the program user interface below the main menu and it gathers the often-used menu items.
Its detail is shown in Figure 17.
Read data from file
This button enables to read data from a configuration file (*.PRM file). This function of the button is the same as the function
of the menu item File->Open.
Save data to file
This button enables to save data to file (*.PRM file). This function of the button is the same as the function of the menu item
File->Save.

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Print
This button enables to print the table of the set parameters out which occur in the chosen configuration. This function of the button
is the same as the function of the menu item File->Print.
Copy
This button enables to copy a chosen text from a table cell selected for edit. This function of the button is the same as the function
of the menu item Edit->Copy .
Paste
This button enables to insert the cut text or copied text into the cell for edit. The function of the button is the same as the function
of the menu item Edit->Paste.
Cut
This button enables to cut the text from a cell selected for edit. The function of the button is the same as the function of the menu
item Edit->Cut.
Upload data from valve
This button enables to upload data from the valve electronics. The function of the button is the same as the function of the menu
item Valve->Upload data.
Download data to valve
This button enables to download data to the valve electronics. The function of the button is the same as the function of the menu
item Valve->Download data.
Configuration change
This button enables to change the valve electronics configuration. The function of the button is the same as the function of the menu
item Valve->Configuration change.
Block diagram
This button enables to switch the program desktop to the mode of directional control valve electronics setting via the block diagram.
The function of the button is the same as the function of the menu item Valve->Block diagram.
Parameters table
This button enables to switch the program desktop to the mode of directional control valve electronics setting via the block diagram.
The function of the button is the same as the function of the menu item Display->Parameters table.
Measurement
This button enables to switch the program desktop to the mode of measurement. The function of the button is the same
as the function of the menu item Display->Measurement.
Reset
This button enables the reset of the valve electronics. The function of the button is the same as the function of the menu item
Communication->Reset.
On-line
This button enables to switch over the program modes between on-line and off-line. The function of the button is the same
as the function of the menu item Communication->Online.
7.3.3. Status Line
The status line is located right in the bottom of the graphical user interface. The sense of the status line is to provide important information
about the actual program status. Its detail is shown in Figure 18.
The status line shows:
›The actual mode of the program: on-line and off-line.
›The information about the firmware version.
›The current directional control valve configuration. During data uploading from the valve electronics or data downloading to the valve
electronics, the actual status of uploading or downloading is displayed here.
›The name of the file (*.PRM) that is in operation.
The actual mode of the program and firmware version can to be found in the Status dialog box which is activated by the menu item
Communication->Status.
7.3.4. Desktop
The desktop occupies the biggest part of the graphical interface of the program PRM7Conf.
Displayed on the desktop are, according to the chosen option, the following items:
›Block diagram and individual dialog boxes that are activated by the block diagram
›Parameters table
›Measurement dialog box
›Communication setting dialog box
›Configuration change dialog box
Figure 18. Status Line

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7.4. Communication with the Valve Electronics
7.4.1. Communication Setting
The program PRM7Conf communicates with the valve electronics via the computer RS232 serial interface. The basic baud parameters are:
›Baud rate 19200 bps
›8 data bits
›No parity
›1 stop bit
The port communication setting is provided via menu item Communication->Setting. In the shown dialog box Communication setting
(see Figure 19) it is possible to assign a communication port.
7.4.2. Communication Establishment
The program PRM7Conf offers two modes of work:
›on-line: Connection to the valve electronics is established and parameters changes will be applied immediately.
›off-line: Connection to the valve electronics is not established. All the changes made will come out at the moment of the connection
to the proportional directional control valve.
Connection to the valve electronics (turnover of the program PRM7Conf to the on-line mode) is possible to be established:
›by menu item Communication->On-line,
›or by toolbar button On-line.
By the same options, it is possible to break down the connection to the valve electronics (turnover of the program PRM7Conf to the off-line mode).
If the connection with the valve electronics is not established, the main reasons of the failure could be:
›disconnected or damaged communication cable of the PC RS232 serial interface,
›switched off or damaged power supply (the status of electronics power supply is signalized by green LED),
›damaged proportional directional control valve electronics
If there is a requirement to establish connection to the valve electronics (to turnover into on-line mode) immediately after the start of the program,
it is necessary to make a particular setting in the Communication Setting dialog box (see Figure 20). The Communication Setting dialog box is
displayed when the menu item Communication->Setting is selected. The setting is done by option on-line in the Mode at start group.
The change will be active after re-start of the program.
Figure 19. Communication Setting
Figure 20. Mode at start setting

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Uploading data from the valve electronics to the program PRM7Conf is possible to be realized
›by menu item Valve->Upload data
›or by toolbar button Upload data from valve
The program also enables to upload data from the valve electronics automatically at the start of the program. This function is activated in case
the mode at start is set to on-line (automatic connection after the start up). The setting is possible from dialog box activated by menu item
Communication->Setting.
Downloading data to the valve electronics from the program PRM7Conf is possible to be realized
›by menu item Valve->Download data
›or by toolbar button Download to directional valve
The proportional valve electronics can detect the basic errors signalized by fleshing the red LED. In this case the valve electronics does not react
to status parameters changes though the connection in the on-line mode is established.
The error state of the valve electronics, including further information (selected communication port, mode of the program, firmware version
and the electronics serial number), is possible to be found out in the Status dialog box.
Status dialog box (see Figure 21) appears after selection of the menu item Communication->Status.
7.4.3. Uploading Data from the Valve Electronics
7.4.4. Downloading Data to the Valve Electronics
7.4.5. Status of the Valve Electronics
The process of data uploading from the valve electronics is visible in the status line.
The process of data downloading to the valve electronics is visible in the status line.
For re-activation of the electronics (after solving the error detected by fleshing red LED) it is necessary to reset the valve electronics.
Downloading the data to the valve electronics can cause undesired behavior of the proportional directional control valve.
If you decide to download the data to the valve electronics, assure yourself that your hydraulic circuit is secured against damage
or eventual personal threat or injury.
The reset of the valve electronics can cause undesired behavior of the proportional directional control valve. If you decide to reset
the valve electronics, assure yourself that your hydraulic circuit is secured against damage or eventual personal threat or injury.
Figure 21. Status of the valve electronics.
7.4.6. Reset of the Valve Electronics
The reset of the valve electronics from program PRM7Conf interface can be carried out
›by menu item Communication->Reset,
›or by toolbar button Reset.
While the reset command is executing, all program functions are disabled.
7.5. Possibilities of Setting the Valve Electronics Parameters
7.5.1. Parameters table
A parameters table, in which all the set parameters are listed, belongs to each configuration. An example of the parameters table
of one of the possible configurations is shown in Figure 22.
The parameters table is displayed
›by menu item Display->Parameters table,
›or by toolbar button Parameters table.

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7.5.2. Block Diagram
Each configuration is represented by a block diagram in which specific blocks correspond to particular functions (parameters) of the electronics.
After a click of the left mouse button on the selected block, a dialog box appears which enables to make required changes. An example
of the block diagram of one of the possible configurations is shown in Figure 23.
The block diagram is displayed
›by menu item Display->Block diagram
›or by toolbar button Block diagram
The block diagram enables to monitor the signal flow through the individual blocks continually and to measure currents of the valve exciting coil.
The measurement nods are marked with red squares and are placed between the blocks enabling the change of parameters (see Figure 23).
7.5.3. Setting According to the Ordering Code
If it is necessary to change the valve configuration or if it is necessary to put the valve in service quickly (in case of original configuration data loss),
the data predefined by the producer can be loaded into the valve electronics. These predefined data can be established via specification of the valve
according to the ordering code. For this purpose, the dialog box Valve configuration according to the ordering code is used.
Explanations of the ordering code individual markings are in the sale catalogue.
The dialog box Valve configuration according to the ordering code (see Figure 24) is displayed
›by menu item Valve->Configuration change,
›or by toolbar button Configuration change.
By selection of the items offered by the dialog box it is possible to assemble a marking according to the ordering code to which the new valve setting relates.
Figure 23. An example of a block diagram in configuration E02S01
Figure 25. An example of a name plate of a proportional directional control
Figure 22. An example of a parameters table in configuration E02S01
Figure 24. Setting according to the ordering code
This setting is not quite optimal because it does not cover individual corrections that are necessary for perfect operation of each
proportional directional control valve. Therefore, some improvements in valve setting should follow (through the parameters table
or the block diagram).
Save the producer’s valve setting to file before loading a new setting to the valve electronics.
In case of loss of original configuration data, it is possible to receive these data back from the producer if you send the type number
and the serial number of the valve. The type number and the serial number are placed on the valve nameplate (see Figure 25).
ordering code
type number serial number

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7.5.4. Setting from a Prepared Configuration File
Configuration files (*.PRM files) are used for storing the valve electronics settings. The stored files can be used later for easy setting of other
directional control valve electronics or for re-writing incorrect data back to the initial setting.
The configuration file with the required setting of the valve electronics can be loaded to the program PRM7Conf
›by menu item File->Open,
›or by toolbar button Read data from file
In the shown dialog box (see Figure 26) it is possible to choose a required *.PRM file.
In on-line mode the data from the configuration file can be directly written into the valve electronics.
The setting of the valve electronics can be saved from the program PRM7Conf to a configuration file (*.PRM file).
›by menu item File->Save,
›or by toolbar button Save data to file
In the shown dialog box (see Figure 27) the user can name or re-name the configuration file.
Figure 27. File savingFigure 26. File opening
7.6. Block Diagrams and Tables of Parameters of Basic Configurations
7.6.1. Configuration E01
Configuration E01 – (directly operated proportional directional control valve without feedback) is available in 3 modifications. Solenoid coil located
on side A and B of the valve, solenoid coil located on side A only, solenoid coil on side B only. The valve block diagram with solenoid coils
on side A and B is shown in Figure 28. For this configuration modifications with one solenoid coil the block diagram is similar.
Here is the list of parameters of the valve electronics which are set for this configuration
Figure 28. Configuration E01 block diagram with solenoid coils on side A and B.
Name in the parameters table Block symbol Brief description of the function
Command signal This parameter sets the type of the command signal. The command signal can be voltage
or current, unipolar or bipolar.
Command signal polarity This parameter changes the command signal polarity.
Threshold
This parameter defines the threshold of the command signal below which the command
signal is ignored. The main purpose is to suppress a signal noise around command signal
zero.
Ramp up – coil A
This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
The current to the coil A is directly proportional to the signal increase behind this ramp.

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Ramp up – coil B
This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
The current to the coil B is directly proportional to the signal increase behind this ramp.
Ramp down – coil A
This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
The current to the coil A is directly proportional to the signal decrease behind this ramp.
Ramp down – coil B
This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
The current to the coil B is directly proportional to the signal decrease behind this ramp.
Command signal gain - coil A This parameter defines the transfer relation between the command signal
and the current to the coil A.
Command signal gain - coil B This parameter defines the transfer relation between the command signal
and the current to the coil B.
Dead band compensation
- coil A
This parameter defines the step change of the current to the coil A to compensate
the positive overlap of the valve spool.
Dead band compensation
- coil B
This parameter defines the step change of the current to the coil B to compensate
the positive overlap of the valve spool.
Current limiting - coil A This parameter limits the maximum output current to the coil A.
Current limiting - coil B This parameter limits the maximum output current to the coil B.
Dither amplitude
This parameter sets the amplitude range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
Dither frequency
This parameter sets the frequency range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Measurement point
7.6.2. Configuration E02S01
Configuration E02S01 (proportional directional control valve with internal spool position feedback) is available in 3 modifications. Solenoid coils
located on side A and B of the valve, solenoid coil located on side A only, solenoid coil on side B only. The valve block diagram with solenoid coils
on side A and B is shown in Figure 29. For this configuration modifications with one solenoid coil the block diagram is similar.
Figure 29. Configuration E02S01 block diagram with solenoid coils on side A and B.
Here is the list of parameters of the valve electronics which are set for this configuration
Name in the parameters table Block symbol Brief description of the function
Command signal This parameter sets the type of the command signal. The command signal can be voltage
or current, unipolar or bipolar.
Command signal polarity This parameter changes the command signal polarity.

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Threshold This parameter defines the threshold of the command signal below which the command
signal is ignored. Its main purpose is to suppress a signal noise around command signal zero.
Ramp up – coil A
This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
The current to the coil A is directly proportional to the signal increase behind this ramp.
Ramp up – coil B
This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
The current to the coil B is directly proportional to the signal increase behind this ramp.
Ramp down – coil A
This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
The current to the coil A is directly proportional to the signal decrease behind this ramp.
Ramp down – coil B
This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
The current to the coil B is directly proportional to the signal decrease behind this ramp.
Command signal gain - coil A This parameter defines the transfer relation between the command signal and the spool
position signal required. This influences the current to coil A.
Command signal gain - coil B This parameter defines the transfer relation between the command signal and the spool
position signal required. This influences the current to coil B.
Dead band compensation - coil A This parameter defines the step change of the current to the coil A to compensate
the positive overlap of the valve spool.
Dead band compensation - coil B This parameter defines the step change of the current to the coil B to compensate
the positive overlap of the valve spool.
Current limiting - coil A This parameter limits the maximum output current to the coil A.
Current limiting - coil B This parameter limits the maximum output current to the coil B.
Dither amplitude
This parameter sets the amplitude range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
Dither frequency
This parameter sets the frequency range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
P parameter of internal feedback
controller This parameter sets the P component of the internal feedback controller.
I parameter of internal feedback
controller This parameter sets the I component of the internal feedback controller.
D parameter of internal feedback
controller
T parameter of internal feedback
controller
D parameter: the parameter sets the derivative component of the internal feedback
controller.
T parameter: the parameter modifies dynamic behavior of the internal feedback controller
(causes delay)
Activation of internal feedback
linearization This parameter activates the internal feedback linearization. The linearization function is used for modification of the natural status of the valve flow rate characteristics.
Linearization point Xn of internal
feedback
Linearization point Yn of internal
feedback
This parameter allows defining 9 linearization points. The linearization function is used
for modification of the natural status of the valve flow rate characteristics.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with one coil on side A, resp. side B.
Measurement point

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7.6.3. Configuration E03
Configuration E03 (proportional directional control valve with external feedback) is available in 3 modifications. Solenoid coils located on side A and B
of the valve, solenoid coil located on side A only, solenoid coil on side B only. The valve block diagram with solenoid coils on side A and B is shown
in Figure 30. For this configuration modifications with one solenoid coil the block diagram is similar.
Figure 30. Configuration E03 block diagram with solenoid coils on side A and B.
Here is the list of parameters of the valve electronics which are set for this configuration
Name in the parameters table Block symbol Brief description of the function
Command signal This parameter sets the type of the command signal. The command signal can be voltage
or current, unipolar or bipolar.
Command signal polarity This parameter changes the command signal polarity.
Threshold This parameter defines the threshold of the command signal below which the command
signal is ignored. Its main purpose is to suppress a signal noise around command signal zero.
Ramp up This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
Ramp down This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
Command signal gain - coil A This parameter limits the maximum output current to the coil A
Command signal gain - coil B This parameter limits the maximum output current to the coil B.
Dither amplitude
This parameter sets the amplitude range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
Dither frequency
This parameter sets the frequency range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
P parameter of external feedback
controller This parameter sets the P component of external feedback controller.
I parameter of external feedback
controller This parameter sets the I component of external feedback controller.
D parameter of internal feedback
controller
T parameter of internal feedback
controller
D parameter: the parameter sets the derivative component of the internal feedback
controller.
T parameter: the parameter modifies dynamic behavior of the internal feedback controller
(causes delay)
Type of external feedback signal This parameter sets the type of the external feedback signal. The external feedback signal
can be voltage or current.
External feedback signal polarity This parameter changes external feedback signal polarity.

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External feedback signal offset This parameter sets the external feedback signal offset.
External feedback signal gain This parameter sets the external feedback signal gain.
Activation of external feedback
linearization
This parameter activates the external feedback linearization. The linearization function is
used for definition of the required functional relation between its input and output
of the external signal feedback.
Linearization point Xn of internal
feedback
Linearization point Yn of internal
feedback
This parameter allows defining 9 linearization points. The linearization function is used for
definition of the required functional relation between its input and output
of the external signal feedback.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with one coil on side A, resp. side B.
Measurement point
7.6.4. Configuration E04S01
Configuration E04S01 (proportional directional control valve with internal spool position feedback and external feedback) is available in 3
modifications. Solenoid coils located on side A and B of the valve, solenoid coil located on side A only, solenoid coil on side B only. The valve block
diagram with solenoid coils on side A and B is shown in Figure 31. For this configuration modifications with one solenoid coil the block diagram is
similar.
Figure 31. Configuration E04S01 block diagram with solenoid coils on side A and B
Here is the list of parameters of the valve electronics which are set for this configuration
Name in the parameters table Block symbol Brief description of the function
Command signal This parameter sets the type of the command signal. The command signal can be voltage
or current, unipolar or bipolar.
Command signal polarity This parameter changes the command signal polarity.
Threshold This parameter defines the threshold of the command signal below which the command
signal is ignored. Its main purpose is to suppress a signal noise around command signal zero.
Ramp up This parameter sets the time within the signal behind the ramp function increase
from 0% to 100% at 100% step increase of the entering signal.
Ramp down This parameter sets the time within the signal behind the ramp function decrease
from 100% to 0% at 100% step decrease of the entering signal.
Current limiting - coil A This parameter limits the maximum output current to the coil A.
Current limiting - coil B This parameter limits the maximum output current to the coil B.

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Dither amplitude
This parameter sets the amplitude range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
Dither frequency
This parameter sets the frequency range of the coil excitation current superposed on its DC
component. This has a significant influence on hysteresis and sensitivity of the proportional
valve. The setting is done experimentally.
P parameter of internal feedback
controller This parameter sets the P component of the internal feedback controller.
I parameter of internal feedback
controller This parameter sets the I component of the internal feedback controller.
D parameter of internal feedback
controller
T parameter of internal feedback
controller
D parameter: the parameter sets the derivative component of the external feedback
controller.
T parameter: the parameter modifies dynamic behavior of the external feedback controller
(causes delay)
P parameter of external feedback
controller This parameter sets the P component of the external feedback controller.
I parameter of external feedback
controller This parameter sets the I component of the external feedback controller.
D parameter of external feedback
controller
T parameter of external feedback
controller
D parameter: the parameter sets the derivative component of the external feedback
controller.
T parameter: the parameter modifies dynamic behavior of the external feedback controller
(causes delay)
Type of external feedback signal This parameter sets the type of the external feedback signal. The external feedback signal
can be voltage or current.
External feedback signal polarity This parameter changes external feedback signal polarity.
External feedback signal offset This parameter sets the external feedback signal offset.
External feedback signal gain This parameter sets the external feedback signal gain.
Activation of internal feedback
linearization This parameter activates the internal feedback linearization. The linearization function is used
for modification of the natural status of the valve flow rate characteristics.
Linearization point Xn of internal
feedback
Linearization point Yn of internal
feedback
This parameter allows defining 9 linearization points. The linearization function is used for
modification of the natural status of the valve flow rate characteristics.
Activation of external feedback
linearization This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Linearization point Xn of external
feedback
Linearization point Yn of external
feedback
This parameter allows defining of 9 linearization points. The linearization function is used
for definition of the required functional relation between its input and output of external
signal feedback.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with coils on side A and B.
Directional valve configuration This parameter enables to change the configuration of the valve electronics. The block
symbol is used only for configuration with one coil on side A, resp. side B.
Measurement point

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7.7. Basic Configuration Blocks Detailed Description
7.7.1. Directional Valve Configuration
7.7.2. Command Signal Type Selection
In this part the basic blocks, which the individual block diagrams enabling the valve electronics setting consist of, are described. Each block matches
the equivalent item in the parameters table.
Block symbol:
Block symbol:
Description: It appears in all configurations.
The block is used for setting the valve into the required configuration. The valve is possible to be set into the configuration E01, E02S01, E03,
E04S01. Each configuration is in modification with two solenoids or in modification with one solenoid on A side, respectively on B side.
The configuration identification in the parameters table is shown in Table 1.
Description: It appears in all configurations.
The block determines the valve command signal type that is connected to the electronics input. All signal types which can be used for the valve
operation are tabulated in Table 2.
Directional Valve Configuration E01 E02S01 E03 E04S01
Open loop Internal feedback External feedback Internal and external
feedback
With one coil on A side OL_A CL_int_A CL_ext_A CL_int&ext_A
With one coil on B side OL_B CL_int_B CL_ext_B CL_int&ext_B
With two coils OL_A&B CL_int_A&B CL_ext_AB CL_int&ext_A&B
Table 1. The identification of the valve configuration in the parameters table.
Table 2. Allowed command signals for possible configurations.
Command
Signals
Valve configuration
E01 E02S01 E03 E04S01
Open loop Internal feedback External feedback Internal and external feedback
1 coil 2 coils 1 coil 2 coils 1 coil 2 coils 1 coil 2 coils
+/-10 V X X X X X X
0…10 V X X X X X X
0..20 mA X X X X X X
4…20 mA X X X X X X
+/-10 mA X X X X X X
12 +/- 8 mA X X X X X X
7.7.3. Command Signal Polarity
Block symbol
Description: It appears in all configurations.
The block changes the command signal polarity. Allowed command signal polarities for possible configurations are shown in Table 3.
If the block is set OFF, the valve behaves as if the command signal was disconnected.
Table 3. Allowed command signals for given configurations.
Allowed
polarities
Valve configuration
E01 E02S01 E03 E04S01
Open loop Internal feedback External feedback Internal and external feedback
Coil A Coil B Coils A B Coil A Coil B Coils A B Coil A Coil B Coils A B Coil A Coil B Coils A B
-1 X X X X X X X X X X
OFFXXXXXXXXXXXX
1X XX XXXXXXX

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7.7.5. Ramp Functions
Block symbol:
Description of function in configuration E01, E2S01:
Ramp up – coil A, respectively ramp up – coil B sets the command signal gradual increase. According to polarity of the signal entering to ramp
functions, the setting takes effect in the gradual increase of the current for the solenoid coil A, respectively for the solenoid coil B.
The ramp up – coil A is active for positive polarity, the ramp up – coil B is active for negative polarity. The setting expresses the time within the signal
behind the ramp function increases from 0% to 100% at a 100% step increase of the entering signal.
Ramp down - coil A, respectively Ramp down – coil B sets the command signal gradual decrease. According to polarity of the signal entering
to ramp functions, the setting takes effect in the gradual decrease of the current for the solenoid coil A, respectively for the solenoid coil B.
The setting expresses the time within the signal behind the ramp function decreases from 100% to 0% at a 100% step decrease of the entering signal.
Example: The block setting Ramp up – coil A for 5 s. The entering signal change from 0 to 50% shows itself by linear increase of the output signal
from 0 to 50% for 2,5 s.
Description of function in configuration E03, E04S01:
Ramp up sets the time within the signal behind the ramp function (the controlled parameter) increases from 0% to 100% at a 100% step increase
of the entering signal.
Ramp down sets the time within the signal behind the ramp function (the controlled parameter) decreases from 100% to 0% at 100% step
increase of the entering signal.
Example: The block setting Ramp up for 5 s.
›The entering signal step change from 0% to 50% shows itself by linear increase of the output signal from 0 to 50% for 2,5 s.
›The entering signal step change from -50% to +50% shows itself by linear increase of the output signal from -50% to +50% for 5 s.
7.7.4. Threshold
Block symbol:
Description: It appears in all configurations.
The threshold sets the valve non-sensitivity around the command signal zero value. The threshold extent is expressed in percents of one polarity
command signal maximum. After the setting, the valve does not react to command signal changes which are less than the set threshold limit.
For command signal values higher than the set threshold limit, the signal correspondent to input is output.
The function can be used in all valve configurations for attenuation of the command signal unwanted ripple around zero value so that the valve
ignores it to the command signal set level.
Example:
The command signal +/- 10V, the threshold setting 10%. If there is a signal in the range -1V…+1V in the command input, the valve does not respond
to this signal
7.7.6. Command Signal Gain
Block symbol:
Command signal gain - coil A and B
Description: It appears in configurations E01 and E02S01.
Command signal gain – coil A, respectively Command signal gain – coil B performs command signal gain setting. According to the polarity
of the signal entering the particular gain block, the setting will influence the current flowing to the solenoid coil A or B. The block of Command
signal gain – coil A is active for positive polarity, the block of Command signal gain – coil B is active for negative polarity.
Example of setting in configuration E01:
Command signal gain in configuration E01 is expressed in mA/% which enables an easy recomputation of the command signal to the solenoid
excitation coil current. For example, if there is an input signal +10% and the Command signal gain – coil A is set to 20 mA/% value, the output
excitation current to coil A will gain 200 mA value.
Example of setting in configuration E02S01:
The Command signal gain in configuration E02S01 is expressed in a non-dimensional form. If an entry signal is set to +10% and the Command
signal gain – coil A is set to 2, the output signal from the block will be +20%.