Model Interpretation

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

4106: Flow coding, unilateral throttling pressure difference 35bar, rated flow 1160L/min, flow greater than 4102 (1120L/min); internal control T return oil + Y independent external leakage configuration

B: Valve body improvement revision, optimized pilot throttling, reduced zero drift and internal leakage; standard complete suffix D02HABF5VSD2-A, O-type neutral position, NBR nitrile seal, ±10V differential voltage command, 7-pin aviation plug, full stroke LVDT valve core feedback, equipped with pilot valve D061-9313. Technical Specifications

Hydraulic parameters

Rated flow rate: 1160L/min (single throttle port with 35bar pressure difference); 2140L/min at 70bar pressure limit flow rate

Pressure resistance: Maximum 350bar for the main oil circuit; Internal control T return oil ≤ 50bar; External leakage Y port withstands 350bar pressure

Dynamic response: Supply oil at 210bar, 100% full stroke step change < 28ms

Control accuracy: Hysteresis < 0.2% FS, resolution < 0.1% FS, zero point drift -20~55℃ ≤ 2.3% FS (revised model B is superior to the base model)

Zero position leakage: 0.68~3.48L/min

Medium: Mineral hydraulic oil, oil fluid NAS6~7 grade, oil temperature -20℃~+80℃

Overall machine net weight: 3.72kg

Electrical parameters

Power supply: DC24V (18~32VDC wide voltage), static power consumption ≤ 660mA

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

Electromagnetic: EN55011 industrial EMC certification, factory plug protection IP65.

Interface and communication configuration

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

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

Control mode: Pure analog closed-loop control, no fieldbus interface. Core function

1. ServoJet jet tube pilot, version B optimizes the flow path, enhances the resistance to oil impurities, and reduces the failure rate in harsh conditions.

2. Built-in LVDT valve core full closed-loop + integrated drive board, automatically compensates for zero-point offsets due to high and low temperatures, supports 24-hour continuous full-load operation.

3. D02 is standardly equipped with O-type neutral position, power-off spring returns to the center to lock the A/B oil ports, cylinder maintains pressure lock, meeting the equipment fault safety standards.

4. Ultra-large rated flow, excellent linear gain, single valve can freely switch position, speed, and pressure for multi-closed-loop control. Applicable scenarios

Hot rolling AGC press-down system for thick plates, multi-directional forging main machine of 10,000-ton capacity, super-large horizontal die-casting high-speed injection unit, high-power hydraulic comprehensive test bench, heavy-duty composite material hot pressing forming equipment, multi-channel heavy-load fatigue hydraulic testing machine.

Operation and maintenance instructions

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

2. The power cable and shielded control line are laid in separate channels, isolating the harmonic interference of the frequency converter from the analog signal.

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

4. All oil ports should be sealed for long-term storage. Place it in a dry and dust-proof warehouse to slow down the aging and leakage of the seals.