Model Interpretation

D662: NG16 Installation, Series of Electric Control Servo Valves with Secondary Jet Pipe Built-in

4012: Basic Specification Code, Single Flow Side Pressure Difference ΔP = 35 bar, Rated Flow 140 L/min, Standard Valve Core Stroke, Internal Control Return Oil + Independent Y Overflow Oil Port (4010 = 75 L/min, 4011 = 100 L/min, 4012 = 140 L/min, stepwise expansion)

The subsequent suffix DxxHABF6VSX2HA/2-A coding rule is completely compatible with D662-4010, and successively defines valve core neutral function, pressure rating, oil discharge configuration, connection specification, control signal, sealing material, factory calibration version. Technical Specifications

Hydraulic parameters

Rated flow rate: 140L/min (single-sided pressure difference 35bar)

Pressure-bearing parameters: P/A/B maximum 350bar; internal control T return oil ≤ 50bar; independent external leakage Y port 350bar

Step response: 100% full travel step < 13ms

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

Zero position leakage: 0.20~1.4L/min

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

Overall machine net weight: 2.6kg

Electrical parameters

Power supply: DC24V (allowable 18~32VDC wide range fluctuation), total machine power consumption ≤ 340mA

Standard control instructions: ±10VDC analog voltage (single-ended / differential dual use), optional ±10mA, 4~20mA current signal

Electromagnetic compatibility: complies with EN55011 industrial EMC standard

Interface and communication configuration

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

Electrical connector: 7-pin circular aviation plug, integrated power supply, control instructions, valve core feedback wiring terminals, control lines require shielded single-ended grounding

Control form: pure analog closed-loop control, no fieldbus communication interface Moog Inc. Core function

Built-in LVDT valve core with full closed-loop, onboard circuit for real-time compensation of zero-point offset, excellent stability in both high and low temperature conditions

ServoJet jet pipe pilot structure, superior to nozzle baffle pilot in resistance to oil liquid impurities, long-term failure rate is low

D02 is standard equipped with four-way O-type neutral position, automatic reset of the neutral position by the spring when power is off, fully enclosed and pressurized at the neutral position

Large flow specification is compatible with high-speed feed of the cylinder and closed-loop for large load flow, with stable and controllable response speed Moog Inc. Applicable scenarios

Large die-locking / injection system of the press machine, hydraulic press-down system for medium-thick plate rolling, heavy forging equipment, large-load material mechanical testing machine, high-speed closed-loop hydraulic system for injection molding, aviation tooling hydraulic test bench.

Operation and maintenance instructions

Assembly of the high-pressure oil inlet pipeline with 3μm precision high-pressure filter. Replace the filter element for the first time 15 days after the new machine is put into operation.

Separate the power supply line and control shielding line for routing. The shielding cable is only grounded at a single point on the control cabinet side.

The original factory has calibrated the zero position. Only a small adjustment of the electrical zero point is allowed on site. It is strictly prohibited to disassemble the pilot components and the main valve core privately.

When the equipment is in long-term storage and idle, seal all the hydraulic oil ports. Store it in a dry and dust-proof environment to avoid the seals from getting damp and aging.