? Bipolar electrical feedback, the pilot valve is a direct-acting high-frequency response proportional valve
? Closed loop position control for main stage
? With integrated electronic control device and feedback control device, suitable for closed-loop control of position, pressure and speed
? Suitable for presses and other high-flow applications that require high accuracy in pressure, speed and position control
| 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, ?oil=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 | IP65 with mating connector mounted and locked | ||||
ADD: Address: No. 81, Zhuhang Road, Minhang District, Shanghai（Shanghai Lixin Hydraulics Co., Ltd.)
TEL: 021-31616718 Tel: 021-31616718, ext. 8000 ( reception )
? 2023 Shanghai Lixin Hydraulics Co., Ltd. copyright hu13042344
