Size (not ISO standard):

16 25 32

2 = 2 way

Table TF310obs/E

LEQZO

Flow control valve

A =

without position transducer

AE =

as A plus integral

electronics

AES= as A plus integral

digital electronics

Series number

2***AES PS--- /*

1 MODEL CODE

25 4/

TF310obs

LEQZO-AES-BC-252S4

Proportional throttle cartridges type LEQZO-A*, 2-way

without position transducer, nominal sizes 16, 25 and 32

obsolete components - availability on request

www.atos.com











ELECTRONIC DRIVERS FOR LEQZO2

Note: For power supply and communication connector see section

Spool type

L = linear

S = progressive

Spool size: 4 = see section

쪩

Spool

Cartridge

Pilot valve

Integral electronics

Main connector

-BC or -BP communication connector

-PS communication connector















Coil voltage (only for -A execution) see

section

쪫

- = standard coil for 24V

Atos drivers

6 = optional coil for 12V

Atos drivers

18 = optional coil for low current drivers

Electronics options for -AE execution,

see section

쪭

I = current reference input (4÷20 mA)

Q = enable signal

Electronics options for -AES execution,

see section

쪯

Q = enable signal

Z = double power supply, enable fault

and monitor (12 pin connector)

Valve model

Drivers model

Data sheet

E-MI-AC-01F

G010

E-BM-AC-01F E-ME-AC-01F E-RP-AC-01F

G025 G035 G100

E-RI-AE

G110

E-RI-AES

G115

-A -AE -AES

E-MI-AS-IR

E-BM-AS-PS

G020

G030

Communication interfaces

(only for AES)

PS = Serial (1)

BC = CANopen

BP = PROFIBUS DP

LEQZO-A* are 2-way proportional

cartridge valves, designed for mounting in

manifold blocks and provide not

compensated flow control according to

the electronic reference signal.

They operate in association with electronic

drivers, see table

쪨

which supply the pro-

portional valve with proper current to align

valve regulation to the reference signal

supplied to the electronic driver.

They are available in different executions:

• -A, without position transducer;

• -AE, -AES as -A plus analogue (AE) or

digital (AES) integral electronics.

The regulation is operated by means of a

spool



sliding into a cartridgel



piloted

by the proportional pressure reducing

valve type DHRZO



The integral electronics



ensures factory

presetting, fine functionality plus valve-to-

valve interchangeability and simplified

wiring and installation.

The electronic main connector



is fully

interchangeable for -AE and -AES

executions.

Standard 7 pin main connector is used for

power supply, analog input reference and

monitor signals.

12 pin connector is used for option /Z (only

AES).

Following communication interfaces , 

are available for the digital -AES execution:

• standard -PS, Serial communication

interface for configuration, monitoring

and firmware updating through Atos PC

software - always present.

• optional -BC, CANopen interface (only

for -AES)

• optional -BP, PROFIBUS-DP interface

(only for -AES)

The valves with -BC and -BP interfaces

can be integrated into a fieldbus

communication network and thus digitally

operated by the machine control unit.

The coils are fully plastic encapsulated

(insulation class H), and the valves have

antivibration, antishock and weather-proof

features.

• Reduced response times

• Accurate flow regulation with good

repeatibility

• Sizes: 16, 25 and 32.

• Max flow up to 350 l/min with differential

pressure Δp

l=l5 bar, see section

쪩

• Max pressure: 250 bar.





Notes

(1) Serial interface always present, also for -BC and -BP options

Seals material:

omit for NBR (mineral

oil & water glycol)

PE = FPM

140

200

HYDRAULIC CHARACTERISTICS (based on mineral oil ISO VG 46 at 50 °C)

Spool type and size

Max regulated flow [l/min]

at Δp = 5 bar

at Δp = 10 bar

230

320

350

490

Ports A, B, X = 250 Y = 5 Dr = 5

≤ 5%

± 1%

LEQZO-A, LEQZO-AE, LEQZO-AES

Hydraulic symbols

LEQZO-A LEQZO-AE, LEQZO-AES

Notes:



Above performance data refer to valves coupled with Atos electronic drivers, see section

쪨

1) Minimum piloting pressure X port = 25 bar.

Max pressure (1) [bar]

Response time 0 ÷ 100% step signal [ms]

Hysteresis [% of max flow]

Repeatability [% of max flow]

Valve model

16 25 32

Valve size

CONNECTIONS FOR -A EXECUTION

Signal description

SUPPLY

GND

SOLENOID POWER SUPPLY CONNECTOR

OPTIONS FOR -A EXECUTION

5.1 Option /6 optional coil to be used with Atos drivers with power supply 12 V

5.2 Option /18 optional coil to be used with electronic drivers not supplied by Atos

LEQZO proportional valves are CE marked according to the applicable Directives (e.g. Immunity/Emission EMC Directive and Low Voltage Directive).

Installation, wirings and start-up procedures must be performed according to the general prescriptions shown in table F003 and in the installation notes

supplied with relevant components.

The electrical signals of the valve (e.g. monitor signals) must not be directly used to activate safety functions, like to switch-ON/OFF the machine’s safety

components, as prescribed by the European standards (Safety requirements of fluid technology systems and components-hydraulics, EN-982).

GENERAL NOTES

7 ANALOG INTEGRAL DRIVERS -AE - OPTIONS

Standard driver execution provides on the 7 pin main connector:

Power supply

- 24VDC must be appropriately stabilized or rectified and filtered; a 2,5 A safety fuse is required in series to the driver power supply.

Apply at least a 10000 μF/40 V capacitance to single phase rectifiers or a 4700 μF/40 V capacitance to three phase rectifiers

Reference input signal

- analog differential input with 0÷+10VDC nominal range (pin D,E), proportional to desired coil current

Monitor output signal

- analog output signal proportional to the actual valve’s coil current (1V monitor = 1A coil current)

Following options are available to adapt standard execution to special application requirements:

7.1 Option /I

It provides the 4÷20 mA current reference signal instead of the standard 0÷+10 V

DC. Monitor output signal is still the standard 0÷+10VDC.

It is normally used in case of long distance between the machine control unit and the valve or where the reference signal can be affected by electrical

noise; the valve functioning is disabled in case of reference signal cable breakage.

7.2 Option /Q

It provides the possibility to enable or disable the valve functioning without cutting the power supply (the valve functioning is disabled but the driver cur-

rent output stage is still active). To enable the driver supply a 24V

DC on the enable input signal.

7.3 Possible combined option: /IQ

REGULATIONS AND SWITCHES

7 PIN - STANDARD

MAIN CONNECTOR

BIAS

SCALE

RAMPS

positive bias adjust

쩨

(driver view)

positive scale adjust

B1:

S1:

(remove the rear cover)

8 ANALOG INTEGRAL DRIVERS -AE - MAIN FUNCTIONS AND ELECTRONIC CONNECTIONS

PIN SIGNAL

TECHNICAL SPECIFICATIONS

NOTES

A V+ Power supply 24 VDC for solenoid power stage and driver logic Input - power supply

B V0 Power supply 0 VDC for solenoid power stage and driver logic Gnd - power supply

(1)

AGND Ground - signal zero for MONITOR signal Gnd - analog signal

ENABLE Enable (24 VDC) or disable (0 VDC) the driver (for /Q option) Input - on/off signal

D INPUT+

Reference analog differential input: 0÷10 VDC maximum range (4 ÷ 20 mA for /I option)

Default setting: 0÷+10 V

DC (4 ÷ 20 mA for /I option)

Input - analog signal

E INPUT -

F MONITOR

Monitor analog output:

0÷+

5 V

maximum range; 1 V = 1 A

Output - analog signal

G EARTH Internally connected to the driver housing

Note: (1) with /Q option ENABLE signal replaces AGND on pin C; MONITOR signal is reffered to pin B.

A minimum time of 60ms to 160ms have be considered between the driver energizing with the 24 V

DC power supply and when the valve is ready

to operate. During this time the current to the valve coils is switched to zero

9 DIGITAL INTEGRAL DRIVERS -AES - OPTIONS

Standard driver execution provides on the 7 pin main connector:

Power supply

- 24VDC must be appropriately stabilized or rectified and filtered; a 2,5 A safety fuse is required in series to each driver power supply

Apply at least a 10000 μF/40 V capacitance to single phase rectifiers or a 4700 μF/40 V capacitance to three phase rectifiers.

Reference input signal

- analog differential input with 0÷+10 VDC nominal range (pin D,E), proportional to desired coil current (4÷20 mA with

cable break detection, ±10 mA, ±20 mA or 0÷20 mA software selectable)

Monitor output signal

- analog output signal proportional to the actual valve’s coil current (1V monior = 1A coil current)

Following options are available to adapt standard execution to special application requirements:

9.1 Option /Q

To enable the driver, supply 24Vdc on pin C referred to pin B: when the enable signal is set to zero the valve status is software selectable, by factory

default the valve functioning is disabled (zero current to the solenoid) but the driver current output stage is still active. For the complete list of selectable

status, see tab. G115.

9.2 Option /Z

It provides, on the 12 pin main connector, the following additional features:

Logic power supply

Option /Z provides separate power supply for the solenoid (pin 1, 2) and for the digital electronic circuits (pin 9, 10).

Cutting solenoid power supply allows to interrupt the valve functioning but keeping energized the digital electronics thus avoiding fault conditions of the

machine fieldbus controller. This condition allows to realize safety systems in compliance with European Norms EN13849-1 (ex EN954-1).

Enable Input Signal

To enable the driver, supply 24Vdc on pin C referred to pin B: when the enable signal is set to zero the valve status is software selectable, by factory

default the valve functioning is disabled (zero current to the solenoid) but the driver current output stage is still active. For the complete list of selectable

status, see tab. G115.

Fault Output Signal

Fault output signal indicates fault conditions of the driver (solenoid short circuits/not connected, reference signal cable broken for 4÷20mA input, etc.).

Fault presence corresponds to 0

VDC

, normal working corresponds to 24

VDC (pin 11 referred to pin 2)

: Fault status is not affected by the Enable input signal

Selector SW

Dither frequency

[Hz]

SW1 SW2 SW3 SW4

ON ON

ON ON ON

ON ON ON ON

The dither frequency is factory pre-

set at 200 Hz and its regulation may

be adjusted after contact with Atos

technical department

100

130

160

200 (Standard)

230

270

300

380

430

470

500

쩨

ramp for increasing reference signal

ramp for decreasing reference signal

RU:

RD:

8.1 ELECTRONIC CONNECTIONS - 7 PIN MAIN CONNECTORS

dither frequency selector (see table beside)

SW:

OFF

TF310obs

10 DIGITAL INTEGRAL DRIVERS -AES - MAIN FUNCTIONS AND ELECTRONIC CONNECTIONS

Assembly position Any position

Subplate surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101)

Ambient temperature -20°C ÷ +70°C for -A execution; -20°C ÷ +60°C for -AE and -AES executions

Fluid Hydraulic oil as per DIN 51524 ... 535 for other fluids see section

쪧

Recommended viscosity 15 ÷100 mm

/s at 40°C (ISO VG 15÷100)

Fluid contamination class ISO 4406 class 20/18/15 NAS 1638 class 9, in line filters of 10 μm (β

10 _>75 recommended)

Fluid temperature -20°C +60°C (standard seals) -20°C +80°C (/PE seals)

10.2 ELECTRONIC CONNECTIONS - 5 PIN COMMUNICATION AND PRESSURE TRANSDUCER CONNECTORS

10.1 ELECTRONIC CONNECTIONS - 7 & 12 PIN MAIN CONNECTORS

Standard

7pin

/Z option

12pin

SIGNAL

TECHNICAL SPECIFICATIONS

NOTES

V+

Power supply 24 V

for solenoid power stage (and for driver logic on 7 pin connection)

Input - power supply

Gnd - power supply

Power supply 0 V

DC for solenoid power stage

(and for driver logic on 7 pin connection)

ENABLE

Enable (24 V

) or disable (0 VDC

) the driver

Input - on/off signal

D 4

INPUT+

Reference analog input: ±10 V

, ±20 mA maximum range software selectable

Default setting: 0÷+10 V

, differential input

/Z option common mode INPUT+ referred to AGND

Input - analog signal

INPUT -

C 5

AGND

Ground - signal zero for MONITOR signal (INPUT+ signal only for /Z option)

Gnd - analog signal

MONITOR

Monitor analog output: 0÷+10 V

maximum range

Output - analog signal

do not connect

VL+

Power supply 24 V

DC for driver logic

Input - power supply

Gnd - power supply

VL0

Power supply 0 V

DC for driver logic

FAULT

Fault (0 V

) or normal working (24 V

)

Output - on/off signal

EARTH

Internally connected to the driver housing

SOFTWARE TOOLS

Note: A minimum time of 270 to 340 ms have be considered between the driver energizing with the 24V

DC power supply and when the valve is ready

to operate. During this time the current to the valve coils is switched to zero.

MAIN CHARACTERISTICS OF PROPORTIONAL THROTTLE CARTRIDGE

Coil resistance R at 20°C 3 ÷ 3.3 Ω for standard; 2 ÷ 2,2 Ω for option /6; 13 ÷ 13,4 Ω for option /18

Max solenoid current 2,6 A for standard 12 V

coil; 3,25 A for 6 V

coil; 1,5 A for 18 V

coil

Max power 40 Watt

Protection degree (CEI EN-60529)

IP65 for -A execution; IP67 for -AE and AES executions

Duty factor Continuous rating (ED=100%)

The driver configuration and parameters can be easily set with the Atos E-SW programming software, available in three different versions according to the

driver’s communication execution: E-SW-PS (Serial), E-SW-BC (CANopen) and E-SW-BP (PROFIBUS DP). Programming software E-SW-BC and E-SW-

BP, for BC and BP drivers, can be also used to modify the valve’s parameterization through the serial communication interface, without disconnecting the

valve from the machine’s bus line.

For a more detailed description of software interface, PC requirements, adapters, cables and terminators, please refer to technical table G500.

Programming software, must be ordered separately:

E-SW-* (mandatory - first supply) = Dvd including E-SW-* software installer and operator manuals; it allows the registration to Atos digital service

E-SW-*-N (optional - next supplies) = as above but not allowing the registration to Atos digital service

On first supply of the E-SW-* software, it is required to apply for the registration in the Atos download area: www.download.atos.com.

Once the registration is completed, the password will be sent by email.

The software remains active for 10 days from the installation date and then it stops until the user inputs his password.

With the password you can also download, in your personal area, the latest releases of the Atos software, manuals, drivers and configuration files.

-PS Serial -BC CANopen -BP PROFIBUS DP /W pressure connector

PIN SIGNAL TECHNICAL SPECIF. SIGNAL TECHNICAL SPECIF. SIGNAL TECHNICAL SPECIF. SIGNAL TECHNICAL SPECIF.

1 NC do not connect CAN_SHLD Shield +5V for termination VT

transducer power supply 24 VDC

2 NC do not connect NC do not connect LINE-A Bus line (high) TR transducer signal 0÷10 VDC

3 RS_GND Signal zero data line CAN_GND Signal zero data line

DGND Data line and termination

Signal zero

AGND Signal zero for power

supply and signal

4 RS_RX Receiving data line CAN_H Bus line (high) LINE-B Bus line (low) NC do not connect

5 RS_TX Transmitting data line CAN_L Bus line (low) SHIELD do not connect NC do not connect

COMMUNICATION CONNECTOR

12 PIN - OPTION /Z

7 PIN - STANDARD

RAMPS

BIASSCALE

MAIN CONNECTOR

(driver view)

LINEARIZATION

(driver view)

5 PIN

CANopen (-BC)

(driver view)

5 PIN

PROFIBUS DP (-BP)

5 PIN

Serial (-PS)

Fastening bolts:

N°4 M8x50 class 12.9

Tightening torque = 35 Nm

Fastening bolts:

N°4 M12x50 class 12.9

Tightening torque = 125 Nm

LEQZO-A-32

LEQZO-AES-*-32

Mass: 7,1 kgMass: 6,5 kg

Fastening bolts:

N°4 M16x120 class 12.9

Tightening torque = 300 Nm

14 DIMENSIONS [mm]

LEQZO-AE-32

Mass: 7,1 kg

LEQZO-A-25

LEQZO-AES-*-25

Mass: 6,4 kg

LEQZO-AE-25

Mass: 6,4 kg

LEQZO-A-16

LEQZO-AES-*-16

Mass: 4,5 kg

Mass: 3,9 kg

LEQZO-AE-16

Mass: 4,5 kg

Mass: 5,8 kg

666

쩸

ZH-7P or ZM-7P

쩸

=12 pin connector ZH-12P for option /Z

DIAGRAMS (based on mineral oil ISO VG 46 at 50°C)

Regulated flow [l/min]

Driving current [mA]

Regulated flow [l/min]

Driving current [mA]

Regulated flow [l/min]

Driving current [mA]

Notes: with 18 VDC coil the driving current is half of standard 12 VDC coil

For the valves with digital electronics, the regulation characteristic can be modified by setting the internal software parameters, see tab. G500.

13.1 Regulation diagrams measured at Δp 5 bar

1 = LEQZO-A*-162S4

2 = LEQZO-A*- 162L4

3 = LEQZO-A*- 252S4

4 = LEQZO-A*- 252L4

5 = LEQZO-A*- 322S4

6 = LEQZO-A*- 322L4

쩸

=12 pin connector ZH-12P for option /Z

쩸

Dotted line =12 pin connector ZH-12P for option /Z

-BP communication interface, ZH-5P/BP connector

-BC communication interface, ZH-5P connector

훿

훾

-PS communication interface, ZH-5P connector

훽

훾

훿

훽

훾

훿

훽

훾

훿

훽

TF310obs

15 COVER INTERFACE AND CAVITY DIMENSIONS FOR LEQZO [mm]

07/13

Size 16

Size 25

Size 32

MODEL CODES OF POWER SUPPLY AND COMMUNICATION CONNECTORS (to be ordered separately)

connectors supplyed with the valve

666

VALVE VERSION

CONNECTOR CODE

ZH-7P ZM-7P ZH-12P ZH-5P ZH-5P/BP

PROTECTION DEGREE

IP65 IP67 IP67 IP67 IP67 IP67

-A -AE, -AES -AES/Z

-Serial (-PS)

or CANopen (-BC)

PROFIBUS DP (-BP)

DATA SHEET

K500 G110, G115, K500

G115, K500