The Rexroth R911277858 is a high-performance proportional valve designed for precise fluid control in various industrial applications. It offers excellent flow regulation and pressure control, making it ideal for use in hydraulic systems, manufacturing processes, and automation equipment.

Key Specifications
Electrical Parameters
Rated Power: 90kW

DC Voltage: 375V nominal (700V max)

Peak Current: 240A (5 sec)

Continuous Current: 120A

Switching Frequency: 2kHz

Protection Features
Overvoltage protection

Overcurrent shutdown

Thermal monitoring (IGBT junction temp)

Short-circuit protection

Physical Characteristics
Dimensions: 245 × 170 × 85mm

Weight: 3.2kg

Cooling: Forced air (fan included)

Mounting: DIN rail or direct panel

Environmental Ratings
Operating Temp: -25°C to +50°C

Humidity: 5-95% non-condensing

Altitude: 1000m (standard)

Compatibility
Designed for ABB ACS880 drives

Plug-and-play installation

Parallel operation supported

Certifications
CE, UL, cUL

EN 61800-5-1 safety

RoHS compliant

Technical Parameters Category Parameter Specification / Description General Valve Series EZ Valve Size NPS 1½" (DN 40) Valve Style Single-Port, Top-Entry or Split-Body. Balanced or Unbalanced Trim. Pressure & Temperature Pressure Rating (ANSI) ANSI Class 150, 300, 600, 900, 1500, 2500 (Depends on specific body ordered) Max. Allowable Pressure Up to 2500 psig (172 bar) for certain body ratings. Temperature Range Standard: -350°F to 1100°F (-212°C to 593°C). Wider ranges with special materials. Flow & Sizing Flow Capacity (Cv) Approximately 20 to 70+, depending on the specific trim size and type (e.g., characterized cage, micro-form trim). End Connections Flanged (RF, RTJ), Buttweld, or Socket Weld. Flow Characteristic Linear, Equal Percentage, or Quick Open (depends on trim). Materials & Construction Body Materials Carbon Steel (WCB), Stainless Steel (CF8M), Alloy 20, Duplex Stainless Steel, and other alloys. Trim Materials Standard Trim: Stainless Steel. Severe Service Trim: Hardened Stainless Steel, Stellite, Tungsten Carbide for abrasion/cavitation resistance. Seat Leakage ANSI Class II, IV, V, or VI (depending on trim selection). Actuator Mounting Designed to be paired with Fisher pneumatic diaphragm actuators (e.g., 1055/1061 series) or piston actuators.