Digital proportional servo valves Series LR
3/3-way directly operated servo valves for the flow (LRWD2),
pressure (LRPD2) and position (LRXD2) control
pressure (LRPD2) and position (LRXD2) control
Series LR digital proportional servo valves are direct driven 3/3-way valves with a patented rotating spool system with closed loop control circuit. The electronic board is integrated into the valve’s body ready to connect.
Series LR*D2 digital proportional servo valve has been designed to be as compact as possible in order to save space and to be mounted on a DIN-rail.
Thanks to this new digital version, the valve can be configurated through a USB connection according to different requirements.
General Data
| Power supply | 24 V DC +/- 10%, max absorption 1,5 A |
| Command signal | +/- 10 V DC 0-10 V 4-20 mA |
| Hysteresis | 1% FS LRWD2 – 0,2% FS LRPD2 |
| Linearity | 1% FS LRWD2 – 0,3% FS LRPD2 |
| Switching time | see the following pages |
| Working temperature | from 0 to 50° C |
| Relative humidity of air | max. 90% |
| Direction of assembly | any |
| Maximum flow | see the diagrams |
| Medium | filtered compressed air, unlubricated, according to ISO 8573-1 class 3.4.3, inert gas |
| Supply pressure [bar] | -0,9 to 10 bar |
| Leakage | < 1% of maximum flow rate |
| Electrical connection | male connector M12 8 poles |
| Hardware configuration port | micro USB |
Coding Example
| L | R | W | D | 2 | – | 3 | 4 | – | 1 | – | A | – | 00 |
| L | SERIES L = proportional servo valves | |
| R | TECHNOLOGY R = rotating spool | |
| W | VERSION W = flow control P = pressure control X = position control | |
| D | ELECTRONICS D = digital | |
| 2 | MODEL 2 = compact DIN-RAIL | |
| 3 | FUNCTION 3 = 3/3-way | |
| 4 | NOMINAL DIAMETER 4 = 4 mm 6 = 6 mm | |
| 1 | COMMAND SIGNAL (Setpoint) 1 = +/- 10 V 2 = 0 – 10 V 5 = 4 – 20 mA | |
| A | INPUT SIGNAL 2 = 0 – 10 V (LRPD2 and LRXD2 only) 4 = 0 – 5V (LRPD2 and LRXD2 only) 5 = 4 – 20mA (LRPD2 and LRXD2 only) | A = interner Encoder (nur LRWD2) B = 1 bar (internal sensor – LRPD2 only) D = 10 bar (internal sensor – LRPD2 only) E = 250 mbar (internal sensor – LRPD2 only) F = +1/-1 bar (internal sensor – LRPD2 only) |
| 00 | CABLE 00 = no cable | 2F = straight cable of 2 m 2R = 90° cable of 2 m 5F = straight cable of 5 m 5R = 90° cable of 5 m |
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