Description
Description:
The D656-025F-6—Moog’s flagship pQ Proportional Servo Valve—marries a 25 l/min flow beast with an on-board pressure controller, turning chaotic 350 bar circuits into velvet-smooth velocity sculptors for 800-ton injection clamps and 20 m/s steel-rolling stands. This ISO 4401 Size 05 titan packs a jet-pipe pilot, dual LVDTs, and CANopen intelligence into a 2.8 kg brick—delivering 0.12 % hysteresis and 120 Hz bandwidth while auto-trimming null drift across 100 °C oil swings.
Application Scenarios:
Midnight in a Thai automotive Tier-1: a 1,050-ton Engel duo machine flashes €29,000 of headlamp lenses per hour when clamp velocity wobbles 4 %. Shift crew swaps in the D656-025F-6 during coffee break. Integrated pQ loops lock 180 mm/s approach to ±0.2 mm/s; flash drops from 2.9 % to 0.08 %. The pain point—pressure spikes masking as position errors—vanishes as the valve’s 5 kHz DSP compensates in 0.8 ms, gifting the line 96 extra perfect shots and €1.7 M quarterly savings.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | D656-025F-6 |
| Manufacturer | Moog Inc. |
| Product Category | pQ Servo-Proportional Valve with Fieldbus |
| Rated Flow (Qn) | 25 l/min @ 35 bar Δp – fills 80 cm³ cavities in 0.19 s |
| Max Operating Pressure | 350 bar (P, A, B) – survives steel-mill hammer blows |
| Hysteresis | ≤ 0.12 % – repeatability sharper than a surgeon’s scalpel |
| Frequency Response (-90°) | 120 Hz – outruns any two-stage rival by 30 Hz |
| Supply Voltage | 24 VDC (±10 %) – draws 1.4 A like a drone |
| Fieldbus | CANopen + analog 4-20 mA – fluent in every PLC dialect |
| Dimensions (L×W×H) | 218 × 60 × 92 mm – hides in Size 05 manifolds |
| Weight | 2.8 kg – feather-light for a pressure wizard |
| Fluid Temperature | –20 °C to +80 °C – Arctic startups, Sahara shutdowns |
| Protection Class | IP65 (mated) – shrugs off coolant tsunamis |
Technical Principles and Innovative Values:
- Innovation Point 1: Built-in A-port pressure transducer + 5 kHz pQ controller – turns any flow valve into a closed-loop pressure island; slashes external PLC code 85 % vs. D633 rivals.
- Innovation Point 2: Jet-pipe pilot with sapphire orifices – 300 million cycles without erosion; bronze-nozzle competitors cough at 80 million.
- Innovation Point 3: CANopen DS408 motion profiles – pre-loaded trapezoids cut clamp jerk 72 %, proven in 0.6-second 400 mm strokes with zero overshoot.
- Innovation Point 4: Dual-gain LVDT + auto-null every 40 ms – thermal drift < 0.04 % over 70 °C; legacy valves wander 0.7 % and need 25-minute warm-ups.
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