Industrial Hydraulics

Proportional, high-response and servo-valves
Detailed information:
RE 29064
Detailed information:
RE 29050
Type 4WREEM
68 Industrial Hydraulics Bosch Rexroth AG
Proportional directional valves, direct operated,
with integral control electronics, electrical position feedback and
spool position monitoring
< Sizes 6 and 10
< Porting pattern to DIN 24340 form A and ISO 4401
< Control of the direction and magnitude of a flow
< Proportional solenoid operation
< Spring-centered control spool
< Different spool overlaps possible
< Deadband compensation firmly set in the factory
Size 6 10
Operating pressure pmax bar 315 315
Nominal flow (∆p = 10 bar) qV nom L/min 8, 16, 32 25, 50, 75
Maximum hysteresis % ≤ 0.1 ≤ 0.1
Step response 0 to 90 % Tu +Tg ms 20 40
Operating voltage U V 24 24
Comm. value signal U V ± 10 ± 10
Proportional directional valves, direct operated with integral control
electronics, el. position feedback and closed-loop control of pressures
< Sizes 6 and 10
< Porting pattern to DIN 24340 form A and ISO 4401
< Closed loop control in A and B, and, if applicable, area-related differential pressure
< Integral digital control electronics
< 1 to 4 integrated pressure sensors or one external pressure sensor
< Version for CAN bus with protocol CANopen (DS-408) or Profibus DP (on inquiry)
< All parameters (ramps, controllers,...) can be adjusted via the field bus interface
< Extended diagnosis functions via field bus
Type 4WREQ
Size 6 10
Operating pressure pmax bar 315 315
Nominal flow (∆p = 10 bar) qV nom L/min 8, 16, 32 25, 50, 75
Maximum hysteresis % 0.1 0.1
Step response 0 to 90 % Tu +Tg ms 20 40
Operating voltage U V 24 24
I mA < 2 < 2
Comm. value signal Min. comm. value V ± 10 ± 10
Flow comm. value mA 4 to 20 4 to 20
Press. comm. value V 0 to 10 0 to 10