Allen-Bradley 150-F251FCD SMC-Flex Solid State Controller 251A

Technical Specifications Breakdown

Key parameters for the 150-F251FCD are listed below for quick reference:

Industry Applications and Operational Benefits

Common uses include conveyors, pumps, fans, and compressors. The 150-F251FCD supports seven standard preset operation modes: Soft Start, Current Limit Start, Dual Ramp, Full Voltage, Linear Speed Acceleration, Preset Slow Speed, and Soft Stop. The Braking Control feature enables quick motor stopping or speed maintenance, reducing mechanical stress and improving process control.

Installation and Setup Guidance

When installing the 150-F251FCD, ensure the input line voltage matches the 500-575V AC, 3-phase, 50/60 Hz requirement. The control voltage for 5-480 A units is 100-240V AC. The controller is housed in an IP65 NEMA Type 4/12 enclosure, suitable for washdown or dusty environments. Mount the unit securely and provide adequate ventilation. An additional control circuit transformer can be installed if needed. Always follow local electrical codes and the manufacturer's manual.

Maintenance and Reliability

The 150-F251FCD includes built-in protection features such as Electronic Motor Overload Protection, SCR Bypass/Run Contactor, and four programmable auxiliary contacts. These features help prevent malfunction and faulty operation. For enclosed units, the operating temperature range is -5 to 40 degrees Celsius (23 to 104 degrees Fahrenheit). The controller can withstand humidity levels from 5 to 95% (non-condensing) and altitudes up to 2000 meters (6560 feet). Periodic inspection of connections and enclosure seals is recommended to maintain reliability.

Robust Motor Control for Demanding Environments

The Allen-Bradley 150-F251FCD is a Solid State Smart Motor Controller from the SMC-Flex series, designed for line-connected three-phase squirrel-cage induction motors.

Selection Guide and Purchasing Advice

When selecting a solid state controller, verify that the current rating (251 A) and horsepower rating (200 Hp at 460V AC) match your motor specifications. The 150-F251FCD is a non-combination controller, meaning it does not include a disconnect or branch circuit protection. Our team can help confirm stock and provide compatible accessories.

Please verify current lifecycle status and availability with AutoDCSTech before ordering.