Atos spa Table F330-1/E
21018 Sesto Calende, Italy - Fax 0331 920005
Proportional throttle cartridge valves type LIQZO-LE
two way, high dynamics, nominal sizes NG 25 ÷ NG 80
LIQZO-LE proportional cartridge
valves are designed for mounting
in manifold blocks and provide
proportional flow control according
to the electronic reference signal.
They are piloted by high dynamic
proportional valve and operate in
association with integral
electronics or Eurocard drivers.
The regulation is operated by
means of a spool with double
(cid:1)
piloting area sliding into a sleeve
(cid:2)
.
The piloting flow is modulated by a
proportional directional valve size
NG06 (for sizes up to NG50) and
NG10 (for sizes up to NG80)
LIQZO-LE-632L4
• Sizes: up to NG80
• Maximum flow up to 4500 l/min
1 MODEL CODE – see notes at section [4] with differential pressure
LIQ - ZO-L - 25 2 L4/ * ** /* ∆p = 5 bar, see section [2];
Synthetic fluids: • Reduced response times and
Flow control valve
/WG=water-glycol
/PE=phosphate ester high dynamic performances;
• Typical applications: plastic
ZO-L = with position transducer on
Design number
the main cartridge and injection and blow moulding,
piloting valve;
Eurocard electronics ceramics, punching & nibbling
Options:
ZO-LE= as ZO-L, but with only for versions LIQZO-LE: machines, die-casting, foundry
integral electronics
I =current reference signal
4 ÷ 20 mA and sheet machinery.
M =monitor output
Q =enabling signal (1)
Size:
25 =NG25
32 =NG32
40 =NG40 Regulation characteristics:
50 =NG50 L4 =linear
63 =NG63
80 =NG80 2 = 2 way
Other sizes and versions available on request: consult our technical office
2 HYDRAULIC CHARACTERISTICS (2) – see notes at section [4]
Hydraulic symbols
LIQZO-L LIQZO-LE
Model LIQZO-L, LIQZO-LE
Size [NG] 25 32 40 50 63 80
Max regulated flow [l/min]
at ∆p = 5 bar 500 800 1200 2000 3000 4500
at ∆p = 10 bar 700 1100 1700 2800 4250 6350
Maximum flow 1200 1800 2500 4000 6000 10000
Max pressure [bar] 350
Nominal flow of pilot valve at ∆P = 70 bar [l/min] 7 14 28 40 90 90
Leakage of pilot valve at P = 100 bar [l/min] 0,5 0,5 0,5 0,7 1 1
Response time [ms] 0 (cid:1) 100% signal variation (3) 14 15 18 20 24 30
Pilot volume (4) [cm³] 2,16 3,2 5,8 8,25 18,3 21
Hysteresis [% of the regulated max flow] ≤ 0,1%
Repeatability [% of the regulated max flow] ± 0,1%
F3303 MAIN CHARACTERISTICS OF PROPORTIONAL THROTTLE CARTRIDGE VALVES TYPE LIQZO-LE
Assembly position Any position
Ambient temperature From -20°C to +70°C for ZO-L versions / from 0°C to +50°C for versions ZO-LE
Fluid Hydraulic oil as per DIN 51524...535; for other fluids see section [1]
Recommended viscosity 15 ÷ 100 mm²/sec at 40°C (ISO VG 15 ÷ 100)
Fluid contamination class ISO 18/15 achieved with in line filters of 10 µm and β 10 ≥ 75 (recommended)
Fluid temperature T < 80°C, if T > 60°C select /PE seals
Coil resistance R at 20°C 3 ÷ 3,3 Ω
Max solenoid current 2,6 A
Max power 35 Watt
Relative duty factor Continuous rating (ED = 100%)
Power connector W for versions -L Type SP-666 (plastic - black); 3 pins, cable clamp PG11, cable max Ø 10 mm
Signal connector S for versions -L Type SP-345 (plastic - grey); 4 pins, cable clamp PG7, cable max Ø 4 ÷ 7,5 mm
Type SP-ZM-7P (metallic); 7 pins, cable clamp PG11, cable max Ø 10 mm
Single connector for versions -LE
Type SP-ZH-7P (plastic); 7 pins, cable clamp PG11, cable max Ø 10 mm to be ordered separately
SP-666: DIN 43650 - ISO 4400; IP 65 (DIN 40050); VDE 0110C;
Connectors features SP-345: VDE 0660; IP 65 (DIN 40050); VDE 0110C;
SP-ZM-7P: according to MIL-C-5015G; IP 66 (DIN 40050)
SP-ZH-7P: mounting dimensions according to MIL-C-5015G; IP 67 (DIN 40050)
4 NOTES TO SECTIONS [1] AND [2]
1) With option /Q, the reference signal must be supplied to pins D, E (see section [6]) and is of differential type.
2) Typical characteristics on section [2] refer to valves coupled with Atos electronic drivers.
3) Response time to step signal (0% (cid:1) 100%) are measured from 10% and 90% of step values with piloting pressure 140 bar.
4) Recommended piloting pressure is 140 ÷ 160 bar.
5 ELECTRONIC DRIVERS
Valves operation is optimized in association with Atos electronic drivers, which have factory NOTES
preset electronic calibration. (1) Execution, Format/Connection
E = Eurocard 100x160 DIN 41494
Models Valve Execution cM ona sx u p mo pw tie or n Driver R ee sfe igr ne an lc s Ramps Options Alarm X = sealed box on the valve: IP65 – DIN 40050
model (1)