MOOG D661-P80HABF6VSX2-B ENGLISH TECHNICAL MANUAL
Description
Model code decoding:
D661: D660 series integrated amplifier servo proportional valve
P: ServoJet jet pipe pilot type, valve coreless mechanical feedback type proportional servo valve
80: Rated flow rate 80L/min (each channel ΔP = 35bar)
H: Internal pilot oil supply, internal pilot oil return (Y-type internal return)
A: ±10VDC analog command signal input standard
B: No safety zero spring, slide valve freely floats when power is off
F: Standard electrical pin definition, DIN6 + PE aviation plug
6: Standard slide valve overlap, center closed zero position
VS: Standard 24VDC built-in amplifier, EMC optimized circuit
X2: Customized internal slide valve machining tolerance and factory preset zero point offset
B: OEM customized version for special equipment
2. Core Hydraulic Specifications
Working Pressure
P/A/B main port: Max 350bar(5000PSI)Moog Inc.
T port(Y internal drain): Max 210bar(3000PSI); External Y drain optional to 350barMoog Inc.
Pilot supply: Internal from P port, pilot pressure 210~350bar
Flow Parameter
Rated flow: 80 L/min @ ΔP=35bar per orifice
Max full open flow: ~92L/min
Zero leakage: ≤4.2L/min at rated pressure
Dynamic Index(210bar supply)
0~100% full stroke step response:12~15ms
Hysteresis＜0.3%FS; Resolution＜0.05%FS; Temp zero drift＜0.1%/55K
Hydraulic Oil Requirement
Oil cleanliness: ISO4406 17/14/11 recommended(min 19/16/13)
Working oil temp:-20℃~+80℃, viscosity 15~68mm²/s
3. Electrical Parameters
Power supply: DC24V（allow range 18~32VDC）, operating current＜0.8AMoog Inc.
Command input: Standard ±10VDC differential analog signal(0~±10V=0~full rated flow)
Connector: 6pin+PE standard round aviation plug, pin1=24V+,pin2=0V-GND,pin3=+Cmd,pin4=-Cmd,pin5~6 spare,PE=valve body groundMoog Inc.
Built-in amplifier: Closed-loop spool position electronic feedback, no external servo driver needed
4. Mounting & Installation
Mounting standard: ISO4401-05-05-0-05 valve mounting pad, any installation angle allowed
Mounting surface: Flatness＜0.01mm/100mm, surface roughness Ra＜0.8μm
Mount bolt: M12×70, grade10.9 hex socket screw, tighten torque 65~70N·m, fasten from center to surrounding
Pipeline suggestion: P/A/B/T port use seamless hydraulic tube, separate signal cable from high-pressure oil pipe to avoid EMI interference
5. Zero Adjustment Operation
Cut off command signal (disconnect control cabinet signal wire, do not unplug valve plug)
Remove small cover screw on electronic housing, access zero trim potentiometer with 2.5mm flat screwdriver
Fine-tune potentiometer clockwise/counter-clockwise (max ±1 rotation, avoid over 2 turns), adjust until actuator stays static with zero command input
Note: X2 customized version factory pre-zeroed, only adjust when obvious drift occurs.
6. Common Fault & Troubleshooting
No flow output with command signal
Check DC24V power supply; Verify ±10V command voltage; Blocked filter/valve inlet contamination
Actuator drift at zero signal
Oil pollution causes spool jamming; zero offset needs potentiometer trimming; insufficient oil cleanliness
Slow dynamic response
Supply pressure lower than 200bar; oil viscosity too high; clogged pilot filter inside valve
Large flow fluctuation
Power supply voltage unstable; signal line interference; system pressure pulsation
7. Safety Precautions
All piping installation must depressurize hydraulic system completely, residual pressure drained before disassembly
Never hot plug electrical connector under powered status, avoid damage to built-in amplifier
Do not disassemble valve body without professional maintenance; internal spool/pilot assembly is precision customized
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