Model Interpretation

D662: NG16 standard installation base, ServoJet jet pipe pilot, valve body integrated drive electronic control module series

4115: Flow coding, unilateral throttling pressure difference ΔP = 35 bar, rated flow 1230 L/min, flow higher than 4106B (1160 L/min); internal control T return oil + Y independent external oil outlet configuration; standard configuration includes complete suffix D02HYBF5VSD4-O, O-type neutral function, NBR nitrile seal, ±10V differential voltage command, 7-core circular aviation plug, full stroke LVDT valve core feedback, and accompanying pilot valve D061-9315. Technical Specifications

Hydraulic parameters

Rated flow rate: 1230L/min (with single throttle port, pressure difference of 35bar); maximum flow rate at 70bar pressure difference limit ≈ 2255L/min

Pressure-bearing capacity: Maximum pressure at the main oil ports of P/A/B is 350bar; working pressure of the internal control T return oil ≤ 50bar; pressure resistance of the external leakage Y port is 350bar

Dynamic response: In the 210bar supply pressure condition, 100% full stroke step response is less than 28.5ms

Control accuracy: Hysteresis < 0.2% FS, resolution < 0.1% FS, zero point drift within -20~55℃ is less than 2.35% FS

Zero leakage: 0.72~3.62L/min

Applicable media: Mineral anti-wear hydraulic oil, oil cleanliness level NAS6~7 (ISO4406 17/14/11), working oil temperature -20℃~+80℃

Overall machine net weight: 3.78kg

Electrical parameters

Power supply: DC24V (18~32VDC wide voltage input), static power consumption of the entire machine ≤ 680mA

Standard control instructions: ±10VDC differential voltage, optional ±10mA, 4~20mA current control signal

Electromagnetic compliance: EN55011 industrial EMC electromagnetic compatibility certification, assembly with original plug protection level IP65, Moog Inc.

Interface and communication configuration

Hydraulic interface: ISO4401-07 NG16 standard installation holes, P for inlet, T for internal control return oil, A/B for load oil ports, Y for independent external leakage oil port

Electrical interface: 7-pin circular aviation socket, integrated power supply, control signal, LVDT feedback wiring, control line double-layer shielding, single-point grounding of the control cabinet

Control mode: Pure analog closed-loop control, no industrial bus communication interface. Core function

1. The servojet jet tube pilot structure has a better ability to resist solid particles in the oil than the nozzle baffle structure. It is suitable for high-pollution harsh working conditions in metallurgy, forging, and die-casting, and has a lower failure rate.

2. The built-in LVDT valve core is fully closed-loop + on-board drive circuit. It can automatically compensate for zero-point deviations in high and low temperatures in real time and supports 24-hour uninterrupted full-load continuous operation.

3. The D02 is standardly equipped with an O-type neutral function. In the event of power loss, the spring automatically returns to the center and locks the A/B oil ports. The hydraulic cylinder is locked and maintained in pressure, meeting the safety standards for equipment failure shutdown.

4. The extremely large flow capacity and excellent linear flow gain allow the single valve to seamlessly switch between position, speed, and pressure multi-closed-loop control modes. Applicable scenarios

Thick Plate Hot Rolling Unit AGC Hydraulic Descaling System, Tons-level Large Multi-directional Forging Hydraulic Main Unit, Ultra-large Horizontal Cold Chamber Die-Casting High-speed Injection Unit, High-power Ship Hydraulic Comprehensive Test Bench, Giant Carbon Fiber Composite Material Mold Pressing Equipment, Ultra-heavy Multi-channel Hydraulic Fatigue Loading Test Machine.

Operation and Maintenance Instructions

1. A 3μm high-pressure precision filter must be installed at the front end of the oil inlet main pipe. The first set of filter elements should be replaced 15 working days after the new machine is put into operation.

2. Power strong current cables and shielded control signal lines should be laid in separate cable trays to avoid harmonic interference from the frequency converter and high-power motors to the analog control signals.

3. Zero point and gain are factory-calibrated. Only minor electrical fine-tuning is allowed on site. It is strictly prohibited to disassemble the jet pipe pilot and main valve core assembly privately.

4. When the equipment is idle and sealed for a long time, fully seal the P/T/A/B/Y oil ports. Store in a dry and dust-proof warehouse to delay the aging and leakage of the sealing parts.