Description

Product Overview

The Allen‑Bradley 1336-B025-AA-EN-GM1 is a 25 HP 1336 PLUS II adjustable frequency AC drive built for three-phase induction motor speed regulation in industrial process and material handling systems. This digital VFD uses sensorless vector control to deliver consistent torque across a wide operating speed band, with integrated analog and discrete I/O plus a SCANport interface for external programming terminals and communication adapters. It solves energy waste and mechanical shock issues from fixed-speed motor operation, enabling soft motor start/stop and precise speed trimming for pumps, fans and conveyors. Automation technicians and plant reliability teams rely on this drive for legacy system maintenance and retrofit projects. The onboard fault logging captures 32 timestamped fault entries, accelerating root-cause diagnosis, while the NEMA Type 1 enclosure protects internal power components from dust and incidental contact inside control rooms. Word count overview:174

Technical Specifications

• Product Model: 1336-B025-AA-EN-GM1
• Brand: Allen‑Bradley
• Warranty: One Year
• Input Voltage: 380–460 V AC three-phase, 50/60 Hz
• Operating Temperature: 0 °C to 40 °C (full rating; derate above 40°C)
• Storage Temperature: -40 °C to 85 °C
• Response Time: Fast vector torque response, adjustable accel/decel ramps
• Protection Class: NEMA Type 1 / IP20
• Accuracy Class: ±0.5% speed regulation open-loop
• Output Frequency: 0–250 Hz
• Rated Current Range: 34 A continuous output
• Communication Interface: SCANport, analog I/O, discrete control terminals
• Supported Protocols: SCANport, compatible with 1203 communication adapters
• Overload Capacity: 150% rated current for 60 seconds
• Dimensions: 406 mm × 305 mm × 203 mm
• 

Application Scenarios

• Water & Wastewater Pump Control: This VFD regulates centrifugal pump speed to maintain constant pipeline pressure. The 1336-B025-AA-EN-GM1 reduces energy consumption by matching motor output to real-time demand, and soft start capability eliminates hydraulic water hammer during pump startup.
• Factory Exhaust Fan Regulation: Installed on large ventilation fans, the drive adjusts fan speed based on building pressure or temperature readings. Vector control maintains stable airflow even with changing static pressure, avoiding frequent on-off cycling of the motor.
• Bulk Material Conveyor Control: The unit drives heavy-duty conveyors for grain and mineral handling. Adjustable acceleration ramps prevent belt slippage and mechanical stress, while fault monitoring detects overload and motor stall conditions before equipment damage occurs.