Invensys 55151 Speed Controller

Invensys 55151 Speed Controller is a motor speed control device used in automation setups that employ Invensys controls. This unit is identified by model number 55151 and offers a defined frequency control range of 10–150 Hz, allowing precise adjustment of the motor’s output speed within that window. As a dedicated speed controller, it translates a control signal into a corresponding drive frequency, enabling operators to tame speed variations and achieve repeatable performance in processes requiring regulated motion. The 55151 specification focuses on frequency-based speed modulation, which is essential for aligning motor performance with varying load and process demands. This controller is part of Invensys’ drive-control ecosystem, chosen when a verifiable frequency response is needed. By restricting output to 10–150 Hz, it provides a clear range for engineers planning control strategies and validating system behavior under different operating conditions. This specification-focused description helps buyers assess whether the 55151 meets their speed-control requirements and supports accurate documentation in system design.