Model Segmentation Explanation

D662: Product Series

NG16 Installation, Secondary Pilot Built-in Electronic Servo Proportional Valve

4010: Basic Specification Code

ΔP = 35bar Rated Flow 75L/min, Standard Valve Core Travel, Internal Control Return Oil Structure

D02: Function Code

Four-way Centered Spring Reset, Centered Fully Sealed O-Type Function

HABF: Pressure / Oil Port / Return Oil Configuration

H: P/A/B Maximum 350bar; A: T Internal Control 50bar; B: Y External Return Oil Port Rated Pressure 350bar; F: Valve Body Standard External Return Oil Port

6: Electrical Connector Specification

7-pin Circular Aviation Plug, DC24V Power Supply

V: Instruction Signal Type

±10VDC Voltage Analog Control Input

SX: Valve Body Material / Sealing

S: Cast Iron Valve Body; X: Fluorine Rubber Viton Oil-Tolerant Sealing

2HA: Custom Suffix

2 = Standard Zero Position Factory Calibration; HA = Original Factory Special Factory Adjustment, Imported Original Factory Sealing Components (The regular standard is 2-A, HA is the customer-customized version) Technical Specifications

Hydraulic parameters

Rated flow rate: 75L/min (single-sided pressure difference 35bar)

Working pressure: P/A/B = 350bar, internal control T ≤ 50bar, external leakage Y = 350bar

Step response: 100% input step < 12ms

Control accuracy: hysteresis < 0.2%, resolution < 0.1%, 55℃ temperature drift < 1.5% FS

Zero position leakage: 0.15~1.2L/min

Applicable media: mineral hydraulic oil, oil temperature -20~80℃, oil cleanliness NAS6~7 grade

Net weight: 2.5kg

Electrical parameters

Power supply: DC24V (allowable 18~32VDC), total machine power consumption ≤ 300mA

Control command: standard ±10V differential / single-ended analog signal

EMC: complies with EN55011 industrial electromagnetic compatibility standard, Moog Inc.

Interface and communication configuration

Hydraulic interface: ISO4401-07 (NG16) installation base plate, P inlet oil, T internal leakage return oil, AB load oil ports, Y independent external leakage oil port

Electrical interface: 7-pin round aviation plug, integrated power supply, command input, valve position feedback wiring, cables must be shielded with single-ended grounding

Communication method: pure analog control, no fieldbus interface

Core functions

Built-in LVDT valve core full closed-loop, valve internal circuit board real-time corrects valve core position, temperature drift and zero drift are extremely small

ServoJet jet pipe pilot, superior anti-fouling ability than nozzle baffle structure, pilot anti-pollution, low failure rate

Automatic position locking by power-off spring, fault-free hold valve core, position closed hold pressure

HA customized version optimizes sealing, suitable for high-temperature, poor-quality oil product working conditions, anti-media aging is better than ordinary - A version Applicable scenarios

Precision die-casting mold, large-scale sheet metal rolling machine, material mechanical testing machine, forging hydraulic equipment, aviation tooling test bench, heavy-duty numerical control feed hydraulic closed-loop system.

Operation and maintenance instructions

The system's oil inlet is equipped with a 3μm high-pressure precision filter. The filter element should be replaced after 15 days of new machine trial operation.

The power cable and control signal line are laid in separate channels. Shielded wires are grounded only at one end of the control cabinet.

The HA factory custom zero position has been calibrated. On-site only allows minor electrical fine-tuning. Disassembly of the pilot and valve core components is prohibited.

The idle oil ports should be sealed. The storage environment should be protected from moisture and dust. Do not place it outdoors.