• The pilot-operated relief valve is used for the pressure reduction from P to A and the overflow function from A to T. • Used for bottom sub-plate mounting, driven by proportional solenoid. • The mounting surface is in accordance with DIN24 340, type A, ISO4401 and CETOP-RP 121H • The maximum safety pressure is available for selection. • Spool spring alignmentalignment • 3DRE electronic controller: european card specification amplifier VT-VSPA1-1/VT-VSPD-1 • Set point the pressure characteristic curve is linear • 3DRE(M)E series integrated electronic controller • Setting value caused by manufacturing error-the deviation of the pressure characteristic curve is small • The slope of the pressure increase and decrease can be adjusted independently
Technical Specs
General
NS
10
16
Weight
3DRE and 3DREM
kg
7.7
10.2
3DREE and 3DREME
kg
7.8
10.3
Installation orientation
Optional, preferably horizontal
Storage temperature range
℃
-20 to +80
Circumstances temperature range
3DREE and 3DREME
℃
-20 to +70
3DREE and 3DREME
℃
-20 to +50
Hydraulic(measured with HLP46;ϑoil =40℃±5℃ and p = 100bar)
Size
10
16
Max. operating pressure
Port P、A and X
bar
315
P and X=315;A=250
Port Y
bar
separately and at zero pressure to tank
Port A Max. setting pressure
pressure stage 50 bar
bar
50
50
pressure stage 100 bar
bar
100
100
pressure stage 200 bar
bar
200
200
pressure stage 250 bar
bar
/
250
pressure stage 315 bar
bar
315
/
Min. set pressure channel A at zero command value
See characteristic curves
Max. pressure relief function (infinitely adjustable)
pressure stage 50bar
bar
Pressure adjustment range
30 to 70
Factor setting
at 70bar
pressure stage 100bar
bar
50 to 130
at 130bar
pressure stage 200bar
bar
90 to 230
at 230bar
pressure stage 250bar
100 to 250
at 290bar
pressure stage 315bar(size 10 only )
bar
150 to 350
at 350bar
Max. permissible flow
L/min
125
300
Pilot oil flow
L/min
1
Pressure fluid
Mineral oil ( HL, HLP ) to DIN 51524;further hydraulic fluids on enquiry!
Hydraulic fluid temperature range
℃
-20 to +70
Viscosity range
mm2/s
20 to 380
Degree of contamination
Maximum permissible degree of fluid contamination: Class 9.NAS 1638 or 20/18/15, ISO4406
Hysteresis
%
±2 of max. set pressure
Repeatability
%
<±2 of max. set pressure
Linearity
%
±3.5 of max. set pressure
Manufacturing tolerance of command value/ pressure char.curve, referred to hysteresis curve, increasing pressure