LIQZH-LEB, LIQZH-LES
High response 2-way servoproportional
cartridge valves specifically designed for
high flow applications requiring maximum
dynamics and accurate control.
Typical applications are die casting and
fast forging presses.
They are equipped with two LVDT position
transducers for best dynamics in not com-
pensated flow regulations.
The cartridge execution for blocks instal-
lation grants high flow capabilities and
minimized pressure drops.
The integral digital electronic driver
performs the valve’s hydraulic regulation
according to the reference signal and
assures valve-to-valve interchangeability
thanks to the factory presetting
.
High response valves are available in
LEB basic execution with analog referen-
ce signals and USB port for software
functional parameters setting or in LES
full execution which includes also optio-
nal fieldbus interfaces for functional
parameters setting, reference signals
and real-time diagnostics
sizes from 32 to 100,
Max flow: 1800 to 16.000 l/min
Max pressure: 420 bar
9
0
Servoproportional 2-way cartridges high response
digital, with two position transducers, ISO 7368 sizes from 32 to 100, rugged design
Available only on request
1
MODEL CODE
FS330
Integral electronics
USB connector
Fieldbus connectors
Main connector
Pilot valve position transducer
Air bleeding
Air suction port
External pilot
Poppet
Sleeve
Main stage position transducer
Pilot valve
X
Y
B
A
functional symbol
LIQZH
Servoproportional cartridge
high response
//
40 2 L4
* ** *
Series number
Poppet type - regulating characteristics:
L4 = linear
Configuration: 2 = 2 way
----
L ES NP
SN
L =
closed-loop
two LVDT transducers
Alternated P/Q controls:
SN = none
Integral digital drivers
:
EB = basic (1)
ES = full
LIQZH-LES-SN-BP-502L4
Electronic options, see sections
I =
current reference input and monitor 4÷20 mA
(omit for standard voltage reference input and
monitor ±10 V)
F = fault signal
Q = enable signal
Z = double power supply (2), enable, fault and
monitor signals (12 pin connector)
9
Seals material,
see sect.
4, 5:
- =
NBR
PE = FKM
BT = HNBR
(1) LEB available only in version SN-NP (2) Double power supply only for LES
simplified symbol
Fieldbus interfaces USB port always present:
NP = Not present
(1)
EW = POWERLINK
BC = CANopen EH = EtherCAT
BP = PROFIBUS DP EI = EtherNet/IP
Valve size, see section
4
size 32 40 50
l/min 800 1200 2000
size 63 80 100
l/min 3000 4500 7200
Nominal flow (l/min) at Δp 5 bar
Table TFS330-1/E
Max regulated flow [l/min]
at Δp = 5 bar
at Δp = 10 bar
Max permissible flow
LIQZH-LEB, LES servoproportional cartridges 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, or components, as prescribed by
the European standards (Safety requirements of fluid technology systems and components-hydraulics, EN-982).
2
GENERAL NOTES
Note:
above performance data refer to valves coupled with Atos electronic drivers,
see section
6
.
(1) with step reference input 0÷100% (2) with pilot pressure = 140 bar, see datailed diagrams in section 7.2
Ports A, B = 420 X = 350 Y 울 10
≤ 0,1
min: 40% of system pressure max 350 recommended 140 ÷ 160
± 0,1
zero point displacement < 1% at ΔT = 40°C
800
1100
1800
3,31
13,2
15
32
1200
1700
2500
5,34
17,8
18
40
2000
2800
4000
7,42
22,3
20
50
3000
4250
6000
10,28
31
20
63
4500
6350
10000
19,55
39
30
80
7200
10200
16000
100
22,53
45
30
20
0,3
40
0,7
40
0,7
100
1
100
1
100
1
3
FIELDBUS - only for LES
Fieldbus allows the direct communication of the proportional valve with machine control unit for digital reference signal, diagnostics and
settings of functional parameters. Analog reference signal remain available on the main connector for quick commissioning and maintenance.
For detailed information about fieldbus features and specification see tech table GS510.
4
MAIN CHARACTERISTICS - based on mineral oil ISO VG 46 at 50 °C
The loss of the pilot pressure or the sudden interruption of the power supply during the valve operation causes the immediate shut-off
of the main poppet.
This could cause pressure surges in the hydraulic system or high decelerations which may lead to machine damages.
WARNING
WARNING
To avoid overheating and possible damage of the electronic driver, the valves must be never energized without hydraulic supply to the
pilot stage. In case of prolonged pauses of the valve operation during the machine cycle, it is always advisable to disable the driver
(option /Q or /Z)
A safety fuse 2,5 A installed on 24VDC power supply of each valve is always recommended, see also Power supply note at sections
9
Δp A-B
Size
Max pressure [bar]
Nominal flow of pilot valve at Δp = 70 bar
[l/min]
Leakage of pilot valve at P = 100 bar [l/min]
Piloting pressure [bar]
Piloting volume [cm
3
]
Piloting flow (1) [l/min]
Response time 0 ÷ 100% step signal (2) [ms]
Hysteresis [% of the max regulation]
Repeatability [% of the max regulation]
Thermal drift
Assembly position Any position
Subplate surface finishing Roughness index, Ra 0,4 flatness ratio 0,01/100 (ISO 1101)
MTTFd values according to EN ISO 13849 75 years, see technical table P007
Ambient temperature range
standard = -20°C ÷ +60°C /BT option = -40°C ÷ +60°C
Storage temperature range
standard = -20°C ÷ +70°C /BT option = -40°C ÷ +70°C
Coil resistance R at 20°C
3 ÷ 3,3 Ω
Max. solenoid current 2,6 A
Max. power 50 Watt
Insulation class
H (180°) Due to the occuring surface temperatures of the solenoid coils, the European
standards ISO 13732-1 and EN982 must be taken into account
Protection degree to DIN EN60529 IP66/67 with mating connector
Tropicalization Tropical coating on electronics PCB
Duty factor Continuous rating (ED=100%)
EMC, climate and mechanical load See technical table G004
Communication interface
USB
Atos ASCII coding
CANopen
EN50325-4 + DS408
PROFIBUS DP
EN50170-2/IEC61158
EtherCAT, POWERLINK
EtherNet/IP
IEC 61158
Communication physical layer
not insulated
USB 2.0 + USB OTG
optical insulated
CAN ISO11898
optical insulated
RS485
Fast Ethernet, insulated
100 Base TX
7
DIAGRAMS (based on mineral oil ISO VG 46 at 50 °C)
Regulated flow [l/min]
Reference signal [V]
1
2
1 = LIQZH-L*-32*
2 = LIQZH-L*-40*
7.1 Regulation diagrams (values measured at Δp 5 bar)
Regulated flow [l/min]
Reference signal [V]
Regulated flow [l/min]
Reference signal [V]
3
4
5
3 = LIQZH-L*-50*
4 = LIQZH-L*-63*
5 = LIQZH-L*-80*
6 = LIQZH-L*-100*
6
FS330
5
SEALS AND HYDRAULIC FLUID - for other fluids not included in below table, consult our technical office
6
ELECTRONIC DRIVERS
Note: for main and communication connector see sections
,
12 13
Seals, recommended fluid temperature
NBR seals (standard) = -20°C ÷ +60°C, with HFC hydraulic fluids = -20°C ÷ +50°C
FKM seals (/PE option) = -20°C ÷ +80°C
HNBR seals (/BT option) = -40°C ÷ +60°C, with HFC hydraulic fluids = -40°C ÷ +50°C
Recommended viscosity 20÷100 mm
2
/s - max allowed range 15 ÷ 380 mm
2
/s
Fluid contamination class
ISO 4406 class 20/18/15 NAS 1638 class 9, in line filters of 10 μm (β10 _> 75 recommended)
Hydraulic fluid Suitable seals type Classification Ref. Standard
Mineral oils
NBR, FKM, HNBR HL, HLP, HLPD, HVLP, HVLPD DIN 51524
Flame resistant without water FKM HFDU, HFDR
ISO 12922
Flame resistant with water NBR, HNBR HFC
Valve model
LEB LES
Drivers model E-RI-LEB-N E-RI-LES-N
Type Digital
Format Integral to valve
Data sheet GS208 GS210
34
3
4
Amplitude ratio [dB]
Frequency [Hz]
Phase [degrees]
3 = LIQZH-L*-40*: 10% ⟷ 90%
4 = LIQZH-L*-40*: 50% ± 5%
7.3 Bode diagrams - stated at nominal hydraulic conditions
1
2
1
2
1 = LIQZH-L*-32*: 10% ⟷ 90%
2 = LIQZH-L*-32*: 50% ± 5%
Amplitude ratio [dB]
Frequency [Hz]
5
6
5
6
9
7
10
8
9
7
10
8
Phase [degrees]
Amplitude ratio [dB]
Frequency [Hz]
Phase [degrees]
5 = LIQZH-L*-50*: 10% ⟷ 90% 7 = LIQZH-L*-63*: 10% ⟷ 90%
6 = LIQZH-L*-50*: 50% ± 5% 8 = LIQZH-L*-63*: 50% ± 5%
9 = LIQZH-L*-80*: 10% ⟷ 90% 11 = LIQZH-L*-100*: 10% ⟷ 90%
10 = LIQZH-L*-80*: 50% ± 5% 12 = LIQZH-L*-100*: 50% ± 5%
11
11
12
12
Time [ms]
Poppet stroke [%]
Step signal [%]
LIQZH-80
-100
0-100
0-75
0-50
0-25
7.2 Response time
The response times in below diagrams are measured at different steps of the reference input signal. They have to be considered as average values.
For the valves with digital electronics the dynamics performances can be optimized by setting the internal software parameters.
Time [ms]
Time [ms]
Poppet stroke [%]
Poppet stroke [%]
Step signal [%]
Step signal [%]
LIQZH-32
-40
0-100
0-75
0-50
0-25
0-100
0-75
0-50
0-25
LIQZH-50
-63
100
75
50
25
100
75
50
25
100
75
50
25
06 1812 24
30
06 1812 24
30
04 12816
20
04 12816
20
05 1510 20
25
05
15
10 20
25
9 ELECTRONIC OPTIONS
Standard driver execution provides on the 7 pin main connector:
Power supply
- 24 VDC must be appropriately stabilized or rectified and filtered; 2,5 A fuse time lag 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 ±10 VDC nominal range (pin D, E), proportional to desired valve poppet position
Monitor output signal
- analog output signal proportional to the actual valve’s poppet position with ±10VDC nominal range
Note: a minimum booting time between 400 and 800 ms has be considered from the driver energizing with the 24 VDC power supply before the valve
has been ready to operate. During this time the current to the valve coils is switched to zero.
9.1 Option /F
It provides a Fault output signal in place of the Monitor output signal, to indicate fault conditions of the driver (cable interruption of poppet
transducers or reference signal - for /I option): Fault presence corresponds to 0 V
DC, normal working corresponds to 24 VDC
9.2 Option /I
It provides 4 ÷ 20 mA current reference and monitor signals, instead of the standard 0 ÷ +10 V.
Input signal can be reconfigured via software selecting between voltage and current, within a maximum range of ±10 V or ±20 mA.
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.
9.3 Option /Q
To enable the driver, supply 24 V
DC on pin C referred to pin B: Enable input signal allows to enable/disable the current supply to the solenoid,
without removing the electrical power supply to the driver; it is used to maintain active the communication and the other driver functions when
the valve has to be disabled. This condition does not comply with European Norms EN13849-1 (ex EN954-1).
9.4 Option /Z
It provides, on the 12 pin main connector, the following additional features:
Enable Input Signal
To enable the driver, supply 24 V
DC on pin 3 referred to pin 2: Enable input signal allows to enable/disable the current supply to the solenoid,
without removing the electrical power supply to the driver; it is used to maintain active the communication and the other driver functions when
the valve has to be disabled. This condition does not comply with European Norms EN13849-1 (ex EN954-1).
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 V
DC, normal working corresponds to 24 VDC (pin 11 referred to pin 2): Fault status is not affected
by the Enable input signal
Power supply for driver’s logics and communication - only for LES
Separate power supply (pin 9,10) allow to cut solenoid power supply (pin 1,2) while maintaining active diagnostics, USB and fieldbus communication.
A safety fuse is required in series to each driver power supply: 500 mA fast fuse.
9.5 Possible combined options
/FI, /IQ and /IZ
AIR BLEEDING
8
To be used only in case port A is connected to tank and
subjected to negative pressure, consult our technical office.
At the machine commissioning it is advisable to bleed the
air from piloting chambers, by loosening the 2 plugs shown
in the picture.
Operate the valve for few seconds at low pressure and then
lock the plugs.
Additional external pilot port connection.
Sizes 80 to 100Size 32 to 63
Air suction
FS330
SP
ACC
MA
MB
Port
LIQZH Size
32 40 50 63 80 100
Air suction
G1/4”
CH 6
G1/2”
CH 10
Air bleeding
G1/4”
CH 6
External pilot
G1/2”
CH 10
SP
ACC
MA
MB
EH, EW, EI fieldbus execution,connector - M12 - 4 pin
PIN SIGNAL
TECHNICAL SPECIFICATION (1)
1
TX+
Transmitter
2
RX+
Receiver
3
TX-
Transmitter
4
RX-
Receiver
Housing
SHIELD
BC fieldbus execution, connector - M12 - 5 pin
PIN SIGNAL
TECHNICAL SPECIFICATION (1)
1
CAN_SHLD
Shield
2
not used
- pass-through connection (2)
3
CAN_GND
Signal zero data line
4
CAN_H
Bus line (high)
5
CAN_L
Bus line (low)
USB connector - M12 - 5 pin always present
PIN SIGNAL
TECHNICAL SPECIFICATION (1)
1
+5V_USB
Supply for external USB Flash Drive
2
ID
USB Flash Drive identification
3
GND_USB
Signal zero data line
4
D-
Data line -
5
D+
Data line +
BP fieldbus execution, connector - M12 - 5 pin
PIN SIGNAL
TECHNICAL SPECIFICATION (1)
1
+5V
Termination supply signal
2
LINE-A
Bus line (high)
3
DGND
Data line and termination signal zero
4
LINE-B
Bus line (low)
5
SHIELD
10.3 Communications connectors -
10
ELECTRONIC CONNECTIONS AND LEDS
V+
V0
AGND AGND
ENABLE
Q_INPUT+
INPUT-
Q_MONITOR referred to:
AGND V0
FAULT
EARTH
A
B
C
D
E
F
G
Input - power supply
Gnd - power supply
Gnd - analog signal
Input - on/off signal
Input - analog signal
Software selectable
Input - analog signal
Output - analog signal
Software selectable
Output - on/off signal
TECHNICAL SPECIFICATIONS
NOTES
Standard
/Q
/F
Power supply 24 VDC Rectified and filtered: VRMS = 20 ÷ 32 VMAX (ripple max 10 % VPP)
Power supply 0 V
DC
Analog ground
Enable (24 V
DC
) or disable (0 V
DC
) the valve, referred to V0
Flow reference input signal: ±10 V
DC / ±20 mA maximum range
Defaults are
0 ÷ +10 V for standard and 4 ÷ 20 mA for /I option
Negative reference input signal for Q_INPUT+
Flow monitor output signal: ±10 V
DC / ±20 mA maximum range
Defaults are
0 ÷ +10 V for standard and 4 ÷ 20 mA for /I option
Fault (0 V
DC) or normal working (24 VDC)
Internally connected to the driver housing
10.1 Main connector signals - 7 pin - standard, /F and /Q options
PIN
10.2 Main connector signal - 12 pin - /Z option
Note: do not disconnect VL0 before VL+ when the driver is connected to PC USB port
1
2
3
4
5
6
7
8
9
10
11
PE
V+
V0
ENABLE referred to:
V0 VL0
Q_INPUT+
INPUT-
Q_MONITOR referred to:
AGND VL0
AGND
NC
R_ENABLE
NC
NC
VL+
NC
VL0
FAULT referred to:
V0 VL0
EARTH
Power supply 24 VDC Rectified and filtered: VRMS = 20 ÷ 32 VMAX (ripple max 10 % VPP)
Power supply 0 V
DC
Enable (24 V
DC) or disable (0 VDC) the valve
Flow reference input signal: ±10 V
DC / ±20 mA maximum range
Defaults are 0 ÷ +10 V for standard and 4 ÷ 20 mA for /I option
Negative reference input signal for Q_INPUT+
Flow monitor output signal: ±10 V
DC / ±20 mA maximum range
Defaults are
0 ÷ +10 V for standard and 4 ÷ 20 mA for /I option
Analog ground
Do not connect
Repeat enable, output repeter signal of enable input, referred to V0
Do not connect
Do not connect
Power supply 24 V
DC for driver’s logic and communication
Do not connect
Power supply 0 V
DC for driver’s logic and communication
Fault (0 V
DC) or normal working (24 VDC)
Internally connected to the driver housing
Input - power supply
Gnd - power supply
Input - on/off signal
Input - analog signal
Software selectable
Input - analog signal
Input - analog signal
Software selectable
Output - analog signal
Gnd - analog signal
Output - on/off signal
Input - power supply
Gnd - power supply
Output - on/off signal
PIN
TECHNICAL SPECIFICATIONS
NOTES
LEB-SN /Z LES-SN /Z
Notes: (1) shield connection on connector’s housing is recommended (2): pin 2 can be fed with external +5V supply of CAN interface
ZM-5PF
ZM-5PF/BP
ZM-4PM/E
ZM-5PM
ZM-5PM/BP
ZM-4PM/E
BC - CANopen
BP - PROFIBUS DP
EH - EtherCat
EW - POWERLINK
EI - EtherNet/IP
MODEL CODES OF MAIN CONNECTORS AND COMMUNICATION CONNECTORS - to be ordered separately
12
VALVE VERSION
CONNECTOR CODE
ZM-7P (IN) ZM-12P (IN)
ZH-7P (IN) ZH-12P (IN)
PROTECTION DEGREE
IP67
LEB
LES
LEB /Z
LES /Z
only for LES
DATA SHEET
GS208, GS210, K500
A3
A4
CONNECTORS
11
B
A1
A
2
A
3
A
4
ZH-12P
ZM-7P
ZM-12P
ZH-7P
ZM-5PM/BP
ZM-5PM
ZM-5PF
ZM-4PM/E
ZM-5PF/BP
12 pin (Metallic)7 pin (Metallic)
MAIN CONNECTORS
FIELDBUS CONNECTORS
Note: the use of metallic connectors is strongly recommended to meet EMC performance
12 pin (Plastic)
7 pin (Plastic)
L1 L2 L3
A
A
A
A
A
A
A2
A
A
A
Note: connectors front view
MAIN
CONNECTOR
FIELDBUS
CONNECTOR
USB
(female)
EtherCAT - POWERLINK
EtherNet/IP
(female - INPUT)
CANopen
(male)
12 PIN MAIN CONNECTOR
(male)
7 PIN MAIN CONNECTOR
(male)
EtherCAT - POWERLINK
EtherNet/IP
(female - OUTPUT)
CANopen
(female)
PROFIBUS DP
(male)
PROFIBUS DP
(female)
FIELDBUS
CONNECTOR
PE
DIAGNOSTIC
LED
LED FUNCTION DESCRIPTION
NP, BC, BP EH, EW, EI
L1
VALVE STATUS LINK/ACT
L2
NETWORK STATUS NETWORK STATUS
L3
SOLENOID STATUS LINK/ACT
USB
CONNECTOR
(always present)
L
L
USB
CONNECTOR
(always present)
MAIN
CONNECTOR
LEB
10.5 Connections layout
LES
LEB
LES
E-C-SB-USB/M12
USB CABLE
cable lenght 4 m
FS330
Size
Fastening bolts
class 12.9 (1)
Tightening
torque
Mass (Kg)
14
FASTENING BOLTS and VALVE MASS
32
40
N°4 M16x60
N°4 M20x70
300 Nm
600 Nm
12,0
17,6
Size
50
Fastening bolts
class 12.9 (1)
N°4 M20x80
Tightening
torque
600 Nm
Mass (Kg)
25,6
63
80
100
N°4 M30x120
N°8 M24x80
N°8 M30x120
2100 Nm
1000 Nm
2100 Nm
46,5
74,6
128
15
MAIN CONNECTORS INSTALLATION DIMENSIONS
(1) Fastening bolts supplied with the valve
13
PROGRAMMING TOOLS - see table GS500
Valve's functional parameters and configurations, can be easily set and optimized using
Atos E-SW programming software connected via USB port to the digital driver. For
fieldbus versions, the software permits valve's parameterization through USB port also if
the driver is connected to the central machine unit via fieldbus.
The software is available in different versions according to the driver’s options:
E-SW-BASIC support: NP (USB) PS (Serial) IR (Infrared)
E-SW-FIELDBUS support: BC (CANopen) BP (PROFIBUS DP) EH (EtherCAT)
EW (POWERLINK) EI (EtherNet/IP)
E-SW-*/PQ support: valves with SP, SF, SL alternated control (e.g. E-SW-BASIC/PQ)
WARNING: drivers USB port is not isolated!
The use of isolator adapter is highly recommended for PC protection (
see table GS500)
USB connection
LES
LEB
E-C-SB-USB/M12 cable
E-A-SB-USB/OPT isolator
Reference
dimension
Main
connector code
Valve size
32 40 50 63 80 100
B
ZM-7P 32 32 45 68 68 80
ZH-7P
Note 1 Note 1
29 52 52 64
ZM-12P
Note 1 Note 1 Note 1
35 35 47
ZH-12P
Note 1 Note 1 Note 1 Note 1 Note 2
40
C (max)
- 121 134 141 172 202 229
D
- 141 154 161 192 222 249
Above dimenions refer to the main connector fully screwed to driver’s connector. The space A = 15 mm to remove the connector must be considered
Note 1: the connector installation can be performed only if the valve’s driver protrudes from the edge of the relevant mounting manifold as
rapresented in above “Installation 2”
Note 2: the connector installation may be critic, depending to the cable size and bending radius
Installation 1 - possible interference between manifold and main
connector
A
B
C
D
15 mm space to remove the 7 or 12 pin main connectors
Clearance between main connector to valve’s mounting surface.
See the below table to verify eventual interferences, depending
to the valve size and connector type
A =
B =
Max manifold dimension to avoid interference with the main
connector, see below table
C =
Installation 2 - no interference
16
INSTALLATION DIMENSIONS [mm]
FS330
Note: for mounting surface and cavity dimensions, see table P006
Space to remove the 7 or 12 pin main connector. For main and communication connectors see section ,
11 12
155
for EW - POWERLINK
and EI - EtherNet/IP
LIQZH-LEB-322
LIQZH-LES-322
LIQZH-LEB-402
LIQZH-LES-402
LIQZH-LEB-502
LIQZH-LES-502
LIQZH-LEB-632
LIQZH-LES-632
115
297
15
92
140
100x1003
125
313
15
97
140
125x1253
140
320
140
140x1403
111
15
152
346
150
160x1603
128
15
155
for EW - POWERLINK
and EI - EtherNet/IP
155
for EW - POWERLINK
and EI - EtherNet/IP
165
for EW - POWERLINK
and EI - EtherNet/IP
11/16
LIQZH-LEB-802
LIQZH-LES-802
LIQZH-LEB-1002
LIQZH-LES-1002
Note: for mounting surface and cavity dimensions, see table P006
Space to remove the 7 or 12 pin main connector. For main and communication connectors see section ,
11 12
170
364
150
ø2455
133
15
150ø2975
188
397
142
15
165
for EW - POWERLINK
and EI - EtherNet/IP
165
for EW - POWERLINK
and EI - EtherNet/IP
