• Pilot-operated two-stage cartridge high-frequency response throttle valve • Suitable for closed-loop control of position, pressure, force and speed • Pilot control valve: six-port direct-acting high-frequency response proportional valve with electric feedback • Main stage: closed loop position control • Integrated open loop and closed loop control electronics (OBE)
Technical Specs
General
NS NG
32
40
50
Weight
kg
11.2
17.3
24.6
Weight with shut-off valve ...../...WK or .../...WL...
kg
12.5
18.6
25.9
Size of the pilot control valve (pilot)
NG
6
6
6
Installation position
Any, preferably horizontal
Storage temperature range
℃
–20 to +80
Circumstances temperature range
℃
–20 to +50
Hydraulic (measured with HLP32, ϑoil=40℃ ±5℃)
Max. operating pressure
– Main stagePort A、B
bar
NS 32~40: 350,NS 50: 420
– Pilot control valve port X
315
– Pilot control valve port Y
210
Rated flow Δp=5bar
– Specifications ...S...L (linear)
L/min
800
1200
2000
– Specifications ...S...R (linear with progressive fine control range)
600
850
1400
Nominal flow of pilot valve at Δp=70bar
L/min
12
40
40
Leakage of pilot valve at P=100bar
L/min
0.3
0.7
0.7
Hydraulic fluid
Mineral oil (HL,HLP) to DIN 51524
Hydraulic fluid temperature range
℃
20 to +80;preferably +40 to +50
Viscosity range
mm2/s
20 to 380;preferably 30 to 45
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c)
Class 20/18/15
Hysteresis
%
≤ 0.2
Hysteresis
%
≤ 0.1
Response sensitivity
%
≤ 0.1
Response Time(step signa 0 ~ 100%)
ms
≤ 20
Electrical data
Voltage type
Direct voltage
Type of signal
Analog
Opening point calibration
%
≦ 1
Zero shift upon change of:
– Hydraulic fluid temperature
%/10K
≦ 0.3
≦ 0.3
≦ 0.3
– Pilot pressure in X
%/100bar
≦ 0.7
≦ 0.7
≦ 0.7
– Return flow pressure in Y
%/bar
≦ 0.3
≦ 0.3
≦ 0.3
Protection class of the valve according to EN60529