2. Core Hydraulic Parameters

Pressure Rating

• Main P/A/B port: Max working pressure 350bar(5000PSI)

• T drain port(Y internal drain): Max allowable backpressure 210bar(3000PSI)

• Pilot oil: Powered internally from main P pressure, working range 210~350bar

Flow Index

• Rated flow: 30 L/min @ ΔP=35bar per single orifice

• Zero leakage: ≤2.8 L/min at full rated supply pressure

• Max full-open flow: ~35 L/min

Dynamic Performance(210bar supply, ISO standard oil)

• 0~100% full stroke step response: 9~13ms

• Hysteresis＜0.3%FS; Resolution＜0.05%FS; Temperature zero drift＜0.1%/55KMoog Inc.

• -3dB frequency response: 55~75Hz

Hydraulic Fluid Requirements

• Oil cleanliness: ISO4406 17/14/11 minimum; recommended 16/13/10

• Working oil temp: -20℃~+80℃, working viscosity:15~68mm²/s

3. Electrical SpecificationsMoog Inc.

• Power supply: DC24V(allow 18~32VDC), steady current ≤0.75A

• Command signal: Differential ±10VDC input(0V=zero flow; +10V full forward flow; -10V full reverse flow)

• Connector: 6-pin+PE aviation plug standard pinout:

  Pin1=DC24V+, Pin2=0V(GND), Pin3=+Command, Pin4=-Command, Pin5/Pin6=spare, PE=valve body earth ground

• Built-in LVDT spool position closed-loop amplifier, no external servo driver needed

4. Mounting Standard

• Mounting face: ISO4401-05(NG10) standard installation pad

• Mount surface flatness＜0.01mm/100mm, Ra＜0.8μm; mounting bolt M12×70, tightening torque:65~70N·m

5. Null Adjustment Procedure

1. Cut off analog command signal, keep 24VDC power on for valve amplifier

2. Remove small cover screw on electronic housing, access zero trim potentiometer

3. Fine-tune trimmer within ±1 full rotation only, adjust until actuator no drift at zero command;

Note: X2-B customized pre-zeroed at factory, trim only when obvious long-term zero drift occurs.

6. Common Fault & Troubleshooting

1. No output flow with valid ±10V command

   Check 24VDC supply voltage; verify signal wiring; clogged pilot filter inside valve or severe oil contamination

2. Actuator drifts at zero command

   Spool jamming from dirty oil; zero offset needs potentiometer fine tuning; internal pilot contamination

3. Slow dynamic response

   Supply pressure below 200bar; oil viscosity too high; blocked built-in pilot filter

4. Flow fluctuation

   Unstable 24V power; signal cable near high-pressure pipeline causing EMI interference

7. Safety Notes

1. Depressurize entire hydraulic circuit fully before disassembling piping or valve

2. Never hot-plug electrical connector under powered status to avoid onboard amp burnout

3. Do not disassemble valve body without professional MOOG authorized maintenance