1. General Description

2. Model Code Decoding (R40K02MONSP2)

• R40: Rated flow 100 L/min (Δp = 35 bar per land)

• K: Spool type = 4‑way, linear, 1.5–3% overlap

• 02: 24 VDC standard electronics, PWM drive

• M: Neutral position (spring‑centered on power loss)

• 0: No Y port; T‑port max 50 bar

• N: Seals = NBR (Nitrile Butadiene Rubber)

• S: Control signal = ±10 mA

• P: Feedback output = 0–10 V (LVDT spool position)

• 2: Connector = M18, 6+PE pins, IP65Moog Inc.

3. Hydraulic Specifications

• Mounting: ISO 4401 Size 05 (NG10)

• Max Working Pressure (P, A, B): 350 bar (5,000 psi)

• T‑Port Pressure: 50 bar (no Y port)

• Rated Flow (Δp = 35 bar/land): 100 L/min (26.4 gpm)

• Max Flow: ≈180 L/min (47.6 gpm)

• Internal Leakage: ≤1.2 L/min

• Fluid: Mineral oil (ISO 11158)

• Fluid Temperature: −20 °C to +80 °C

• Filtration: ISO 4406 17/14/11

• Weight: ≈6.3 kg (13.9 lb)Moog Inc.

4. Dynamic Performance (Typical)

• Step Response (0→100% stroke): ≤18 ms

• −3 dB Bandwidth: 55–65 Hz

• Hysteresis: <0.2% FS

• Resolution: <0.1% FS

• Null Drift (ΔT = 55 K): <1.5% FSMoog Inc.

5. Electrical Specifications (R40K02MONSP2)

• Supply Voltage: 24 VDC (18–32 VDC)

• Max Current: 3.5 A

• Control Signal: ±10 mA

• Feedback Output: 0–10 VDC (spool position)

• Connector: M18, 6+PE pins, IP65

• Ambient Temperature: −20 °C to +60 °C

• EMC: CE compliantMoog Inc.

6. Key Features

• Pilotless direct drive: 100 L/min rated flow; no external pilot supply

• Closed‑loop LVDT control: High precision and repeatability

• Pressure‑independent response: Stable dynamics under varying load pressures

• Fail‑safe spring centering: Returns to neutral on power loss

• Compact, rugged build: Suits harsh industrial environments

7. Applications

• High‑flow hydraulic presses

• Large material fatigue test benches

• Industrial automation (high‑flow position/velocity/pressure control)

• General high‑response closed‑loop hydraulic systems

8. Pin Assignment (M18, 6+PE)

1. +24 VDC

2. Power GND

3. Command +

4. Command −

5. Position Feedback Out

6. Feedback GND

   PE: Protective Earth

   Recommendation: Use shielded twisted‑pair cable for signals.

9. Installation & Operation Notes

• System Flushing: Flush system to ISO 4406 15/12 or better before valve installation.

• Mounting: Install on clean, flat surface; torque mounting bolts to manufacturer’s specs.

• Wiring: Use shielded cables; separate power and signal wires to avoid noise.

• Filtering: Maintain system filtration at ISO 4406 17/14/11 to prevent wear.

• Temperature: Keep fluid within −20 °C to +80 °C; avoid thermal shock.

10. Maintenance & Troubleshooting

• Regular Checks: Inspect for leaks, loose connections, and abnormal noise.

• Filter Replacement: Replace pressure filters per schedule to maintain cleanliness.

• No Response: Check power supply, wiring, and command signal; verify LVDT feedback.

• Drift/Instability: Check fluid contamination, temperature, or mechanical wear.

11. Safety Instructions

• Pressure Relief: Relieve system pressure before installation or maintenance.

• Electrical Safety: Disconnect power before wiring; avoid contact with live parts.

• High Pressure: Do not disconnect hoses under pressure; use proper safety equipment.

• Environmental: Do not expose to explosive or corrosive atmospheres unless rated.