the ewm* family - pneumax.ru ewm* family has been designed to realize the most common closed loop...

T H E E W M * F A M I L Y

digital amplifiers

for closed loop

applications

S Stroke control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

SP Stroke and pressure control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7

MS Master and slave control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

SS Synchro stroke control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9

P Pressure control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10

PQ Pressure and flow control cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11

PID Customizable cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 12

PC Software kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13

The EWM* family has been designed to realize the most common closed loop controls, that are ever more requested

on industrial applications. They are suitable for DIN EN type 50022 rail mounting.

EWM* electronics cards are digital, and they have a package software that allows to do the start-up in an easy and

quickly way. Also unspecialized staff can be able to use this software guaranteeing good performances in compliance

with current market requests.

Duplomatic Oleodinamica has a wide range of actuators with built-in sensors based on the magnetostrictive principle

(MTS or BALLUFF) that allows to have a complete package.

GENERAL INFO

THE EWM* FAMILY

POSITIONING CONTROL:

Five different cards are available for fast and

excellent positioning. You can choose between

them, looking at the position accuracy you

need, from the simple preset positioning device

(S-BA version) to the complex axis card with

Profibus communication and SSI sensor

(version S-DAD).

AXES SYNCHRONISM CONTROL:

Two card versions are available: with basic

master/slave concept for two axes with

analogue signal (version MS-AA), or more

sofisticated version SS-DAD that can control up

to 24 synchronized axes with Profibus protocol

communication and SSI sensor.

PRESSURE CONTROL:

Two card versions are available.

The P-AA card is used to pilot proportional

valves for pressure reducing control or pressure

relief control. This card embeds the amplifier

and can be connected directly with the valve.

The PQ-AA card, coupled with a suitable

directional valve allow to do the p/Q function.

This card permit the pressure control in closed

loop during the static condition and allows the

flow/velocity control in open loop during the

movement.

CUSTOM CONTROL:

The PID card is wholly customizable, for a

complete control of the parameters and values.

TABLE OF CONTENTS

This card is developed for an easy stroke control of

hydraulic actuators connected to a simple PLC with only

I/O functions.

The target position can be selected by a binar input up

to 8 different position, preset via software

The position feedback, analog type, is available with

0 ÷ 10 V or 4 ÷ 20 mA signal. A typical position accuracy

of app. 0,01% of the sensor stroke can be achieved.

The analogue differential output can control a directional

proportional valve with integrated electronics. As option,

an integrated power amplifier is available.

Internal function as In position / Out of position or

sensor /command failure are monitored with two

digital output.

Two operating modes can be selected:

Stroke depending deceleration: the actuator moves in

open loop mode and switches over in closed loop during

deceleration. This method has a very high stability and

allows the shortest time target positioning

NC mode: the position profile is internally generated with

defined speed and the axis is following the command

position with the same speed controlled by the following

error.

Power supply V DC12 ÷ 30 ripple included

external fuse 1,0 A (5 A for M2 version)

Current consumption: - E0 and E1 version- M2 version

mAA

100 + sensor power consumptiondepending from solenoid current

Command value binary command with 3 bit

Feedback value: - BA version- BI version

VmA

0 ÷ 10 (RI= 90 kΩ)

4 ÷ 20 (RI= 250 kΩ)

Output value: - E0 version- E1 version- M2 version

VmAA

±10 (max load 5 mA)4 ÷ 20 (max load 390 Ω)

1,0 ÷ 2,6

Position accuracy % 0,01

Interface RS 232 C

Electromagnetic compatibility (EMC):according to 89/336 CEE standards

EMISSIONS EN 50081-1IMMUNITY EN 50082-2

Housing materialthermoplastic polyammide PA6.6

combustibility class V0 (UL94)

Housing dimensions mm 120(d) x 100(h) x 23(w) (M2 version: w = 45)

Connector 4x4 poles screw terminals - PE direct via DIN rail

Operating temperature range °C -20 / +60

Protection degree IP 20

EWM-S-B*

CARD FOR POSITIONING CONTROLS

TECHNICAL CHARACTERISTICS

OPERATING PRINCIPLE

Binary command value

A = Analogic feedback valueI = Current feedback value

Series No.

Stroke control

E W M - S - B 10/

Output value:E0 = voltage 0 ÷ ±10V (standard)E1 = current 4 ÷ 20 mAM2 = embedded power amplifier

CODIFICATION



Current consumption mA 400 + sensor power consumption

Command valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)

Feedback valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)


VmAA

±10 (max load 5 mA)4 ÷ 20 (max load 390 Ω )

1,0 ÷ 2,6

Position accuracy % 0,01

Interface RS 232 C





Housing dimensions mm 120 (d) x 100(h) x 23(w) (M2 version: w = 45)




EWM-S-AA



This is the most used card for a simple closed loop

positioning of hydraulics actuators where the target

positions are defined by the external PLC and

transferred to the card through an analogue command

input.


proportional valve with integrated electronics. As option,

an integrated power amplifier is available.

Internal profile can be defined by acceleration time,

deceleration stroke or travelling speed.


sensor /command are monitored with two digital

output.



open loop mode and switches over in closed loop

during deceleration. This method has a very high

stability and allows the shortest time target positioning

(analog). If needed the maximal velocity can be limited

by an external velocity imput (analog).




error.

OPERATING PRINCIPLE

Analog command value

Analog feedback value Series No.

Stroke control

E W M - S - A A 10/


CODIFICATION

EWM-S-AD


This card has been developed for closed loop

positioning of hydraulics actuators where an high

accuracy is needed.

This accuracy is reached using a digital sensor with SSI

interface to measure the position. It largely depends on

the sensor resolution; we recommend a 5 µm resolution;

also 1 µm is possible.

The target positions are defined by the external PLC

and transferred to the card through an analogue

command input.


proportional valve with integrated electronics. Internal

profile can be defined by acceleration time, deceleration

stroke or travelling speed.



output.






(analog). If needed the maximal velocity can be limited





error.

OPERATING PRINCIPLE


Digital feedback value Series No.

Stroke control

E W M - S - A D 10/

Output value:E0 = voltage 0 ÷ ±10V (standard)E1 = current 4 ÷ 20 mA

CODIFICATION


external fuse 1,0 A


Command valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI =250 Ω)

Feedback value SSI digital sensor with any SSI interface

Output value: - E0 version- E1 version

VmA


Position accuracy % ± 2 bits of sensor resolution

Interface RS 232 C





Housing dimensions mm 120 (d) x 100(h) x 45(w)





EWM-S-DAD

CARDS FOR POSITIONING CONTROLS


positioning of hydraulics actuators where the card works

as a axis controller and communicate with the PLC by

the integrated Profibus interface.

The position accuracy is reached using a digital sensor

with SSI interface to measure the position. It largely

depends on the sensor resolution; we recommend a

5 µm resolution; also 1 µm is possible.


proportional valve with integrated electronics.

The target positions and the actual value are transferred

from the external PLC to the card and vice versa by the

Profibus communication interface.





output.






(analog) If needed the maximal velocity can be limited





error. Also high/low speed functions are available.

OPERATING PRINCIPLE

Digital command value

Analog and digital feedback valueSeries No.

Stroke control

E W M - S - D AD 10/


CODIFICATION


external fuse 1,0 A

Current consumption mA 400+ sensor power consumption

Command valuevia Profibus DP

ID number 1810h

Feedback valueV

mASSI

0 ÷ 10 (RI = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)

digital sensor with any interface SSI


VmA



Interface RS 232 C










EWM-SP-DAD

CARDS FOR POSITIONING CONTROLS

Analog and digital feedback value


Series No.

Stroke and pressure control

E W M - SP - D AD 10/


CODIFICATION


positioning of hydraulics actuators where the card works

as a axis controller and communicate with the PLC by

the integrated Profibus interface.






proportional valve with integrated electronics.

The target positions and the actual value are transferred

from the external PLC to the card and vice versa by the

Profibus communication interface.





output.

Different operating modes can be selected:





(analog) If needed the maximal velocity can be limited





error. Also high/low speed functions are available.

Force control mode: The pressure controller works on

the principle of the pressure limitation. When the

command value pressure is reached the card work as a

pressure close loop. The MIN evaluation function

defines if the axis has to work in position control or in

pressure control. To reduce the pressure overshoots,

the I parameter of pressure control is limited by the

position controller (changed from PD to PID control).

OPERATING PRINCIPLE

Power supply V DC 24 ±5% ripple included - external fuse 1,0 A


Command value via Profibus DP - ID number 1810h

Feedback valueV

mASSI

0 ÷ 10 (RI = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)



VmA



Interface RS 232 C










EWM-MS-AA

CARD FOR SYNCHRONIZATION CONTROL

Developed for an easy synchronization of two actuators

with an overriding synchronization controller.

Proportional valves with integrated electronics can be

driven by the differential output. As option, an integrated

amplifier is available.

The card works in open loop mode and switches over in

closed loop during deceleration.

The synchronization controller correct the speed of the

axis (slave axis). Positioning failures during the

movement will increase or reduce the slave axis

velocity, so the synchronization failure will be

compensated.

The axes speed can be limited by an external analogue

speed input.

The card can drive only an axis; to get the complete

master and slave synchronization two cards are

necessary.

OPERATING PRINCIPLE



Master and slave control

E W M - MS - A A 10/


CODIFICATION



Current consumption: - E0 and E1 version- M2 version

mAA

100 + sensor power consumptiondepending from solenoid current

Command valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)

Speed input value V 0 ÷ 10 (R = 90 kΩ)

Feedback valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)


VmAA


1,0 ÷ 2,6

Interface RS 232 C





Housing dimensions mm 120(d) x 100(h) x 23(w) (M2 version: w = 45)





CARD FOR AXIS SYNCHRONIZATION CONTROL

EWM-SS-DADThis card has been developed to synchronize from 2 up

to 24 axes with a high accuracy.





Each card work as an axis controller and is connected

to the other cards via Canbus. This bus line has to be

coupled with the PLC Profibus DP interface using the

EWM-BUS-DD/10 (to be ordered separately).

Proportional valves with integrated electronics can be

driven by the differential output.

The card works in open loop mode and switches over in

closed loop during deceleration.

The synchronization controller correct the speed of the

axis (slave axis). Positioning failures during the

movement will increase or reduce the slave axis

velocity, so the synchronization failure will be

compensated.

The axes speed can be limited by an external analogue

speed input.

The card can drive only an axis.

OPERATING PRINCIPLE


Analog and digital feedback value Series No.

Synchro stroke control

E W M - SS - D AD 10/


CODIFICATION


external fuse 1,0 A


Command value via Profibus DP - ID number 1810h

Speed imput value V 0 ÷ 10 (R = 90 kΩ)

Feedback valueV

mASSI

0 ÷ 10 (RI = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)



VmA


Position accuracy ± 2 bits of sensor resolution

Interface RS 232 C










CARDS FOR PRESSURE CONTROL

EWM-P-AADeveloped for pressure closed loop control of pressure

reducing valves and pressure relief valves, with an

embedded power amplifier for proportional valves.

The EWM-P* card works as a bypass control module.

The command value is directly transferred to the control

output (pressure valve) and the closed loop

compensates only the linearity failures. In many cases

the optimization is possible without any measuring

instruments (only one manometer is necessary).

The current output is settable at 1.0, 1.6 and 2.6 A.

The card allows to set the following parameters: ramp

up, ramp down, PID parameters, dither, frequency and

amplitude, PWM frequency, maximum and minimum

pressure

OPERATING PRINCIPLE



Pressure control

E W M - P - A A 10 M1/

Embedded power amplifier

CODIFICATION


external fuse 3,0 A

Current consumption A 1,0 ÷ 2,6 depending from solenoid current

Command valueV

mA0 ÷ 10 (R

I = 100 kΩ)

4 ÷ 20 (RI = 390 Ω)

Feedback valueV

mA0 ÷ 10 (R

I = 100 kΩ)

4 ÷ 20 (RI = 390 Ω)

Output current A 1,0 ÷ 2,6

Pressure accuracy % 0,1

Interface RS 232 C










EWM-PQ-AA

CARDS FOR PRESSURE AND FLOW CONTROL

This card has been developed to control an hydraulic

actuator with classic p/Q method.

The actuator moves in both direction in open loop and

the travelling speed can be adjusted by an analogue

speed input. During the stroke, if the actuator finds a

load and the pressure increases, the card automatically

switches to the pressure closed loop control. Also the

pressure set can be adjusted by an analogue input.

If needed, the card allows a differential pressure control

using two pressure sensors.

For control of pressure controls hydraulic axes via

analogue interfaces or integrated Profibus DP interface.

In the A-version the command values are defined by

analogue signals. In the PDP-version the analogue

signals are replaced by Profibus DP (command values

and control signals as well as status information and

actual values).

The differential output can be used for control of

proportional valves with integrated or external

electronics.

Internally the system is monitored concerning different

failures. Error, sensor or command value failures are

indicated by Profibus and the two digital output signals

(ready and in pos).

OPERATING PRINCIPLE



pressure and flowcontrol

E W M - PQ - A A 10/


CODIFICATION


external fuse 1,0 A

Current consumption mA 100

Command valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)

Speed imput (Q imput) V ±10 (RI = 90 kΩ)

Feedback valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)


VmA


Interface RS 232 C










EWM-PID-AA

CARD FOR CLOSED LOOP CONTROLS

This card has been developed for universal closed loop

control. The controller structure is designed as a classic

PID algorithm with a short Interface of 1 ms.

Alternatively different feedback value (4...20 mA or

0...10 V) can be adapted.

The output signal is available as an active difference

signal for the direct connection to the valves with

integrated electronics.

The command value can be adapted by a ramp function.

A digital input enables the switching between two

parameter sets.

The integrator function can be activated by an external

input depending on the feedback signal.

OPERATING PRINCIPLE



PID control

E W M - PID - A A 10/


CODIFICATION


external fuse 1,0 A

Current consumption mA 100

Command valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)

Feedback valueV

mA0 ÷ 10 (R

I = 33 kΩ)

4 ÷ 20 (RI = 250 Ω)


VmA


Interface RS 232 C










EWMPC

SOFTWARE KIT

For an easy start-up of the digital cards a PC-software

can be used.

During the identification all information are read out of

the module and the table input will be automatically

generated.

Some functions like baud rate setting, remote control

mode, saving of process data for later evaluation are

used to speed up the installation procedure.

The kit include software and USB cable to connect the

card at the PC.

OPERATING PRINCIPLE

Series No.

E W M PC 10/

CODIFICATION

DUPLOMATIC OLEODINAMICA S.p.A.

Piazzale Bozzi, 1

20025 LEGNANO (MI)

ITALY

phone +39 0331 472111 - FAX +39 0331 540328

e-mail: [email protected]

www.duplomatic.com info-ewm-E-05/08

the ewm* family - pneumax.ru ewm* family has been designed to realize the most common closed loop...

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