CATALOGUE release 8.7

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Products designed for industrial applications.
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Series LRWA analogic proportional servo valves CATALOGUE
2
/15.11.01 2
> Release 8.7 CONTROL >
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Analogic proportional servo valves
Flow control - Series LRWA
3/3-way directly operated servo valves for the flow control
Theser servo valves are equipped with
a patented rotating spool system with
closed loop control circuit.
Their compact design makes them
particularly suitable for several
applications.
The LRWA0 cartridge has to be
supplied with a controller that contains
the electronic board and a connection
cable. The valve controllers are adjusted
to the corresponding cartridges. A
correct function needs a cartridge and a
controller with identical serial numbers.
In the LRWA2 (cabinet mounting on DIN-
rail) and LRWA4 (sub-base mounting,
with G1/4 threaded ports) versions, the
electronic board is integrated into the
valve’s body ready to connect.
» » Rotating spool with a
metal to metal seal
» » Compact design
» » High flow rate
» » Electronic control to
ensure high precision
in the flow control
»
» 3-way-function with 4 - 6
mm nominal diameters
» » LRWA0 version:
cartridge system, optimal
mounting options for
different applications
» » LRWA2 version: for
cabinet mounting on DIN-
rail in any position
»
» LRWA4 version: realized
on a proper sub-base with
G1/4 threaded ports for
mounting in any position
GENERAL DATA
Power supply 24V DC +/- 10%, stabilized, max. 0,8 A
Control signal +/- 10V 100 kohm; 0-10V 100 kohm; 0-20 mA 500 ohm; +/-5 V DC 100 ohm (LRWA4 only)
Hysteresis 1% FS
Linearity 1% FS
Switching time from 0 to 100%: approx. 5 ms; +/- 100%: approx. 7 ms
Working temperature from 0 to 50°C
Relative humidity of air max. 90%
Weight of the cartridge 0.140 kg without cable; (LRWA0); 0.700 kg (LRWA2); 1 kg (LRWA4)
Maximum flow rate at 6 bar ΔP 1 bar 350 Nl/min (LRWA4-34); 450 Nl/min (LRWA0-34, LRWA2-34); 550 Nl/min (LRWA4-36); 690 Nl/min (LRWA0-36,
LRWA2-36)
Medium filtered compressed air, unlubricated, according to ISO 8573-1 class 3.4.3, inert gas
Supply pressure -0,9 to 10 bar
Leakage < 1% of maximum flow rate
Electrical connection SUB-D connector 25 poles with pre-wired cable of 0.5-1-2 m (LRWA0);
male connector M12 5 poles (LRWA2); male connector M16 7 poles (LRWA4)
Running out of stock