The Keyence SJ-M300 Spot Type Amplifier Unit is a precision-engineered controller designed to deliver highly reliable static elimination in compact, high-performance setups. With its pulse AC method, advanced ion balance control, and integrated alarm systems, the SJ-M300 is ideally suited for applications requiring precise electrostatic control, such as electronics assembly, optical manufacturing, and cleanroom environments.

At the heart of the SJ-M300’s performance is its pulse AC voltage application method, which applies a ±5.5 kV supply and delivers a rated output of ±6 kV. This powerful discharge capability ensures quick and effective neutralization of static charges on surfaces, even in demanding environments where electrostatic buildup can cause product damage, contamination, or production delays.

The SJ-M300 integrates I.C.C. (Ion Current Control) technology, which plays a vital role in maintaining ion balance. This advanced control method ensures that the balance of positive and negative ions remains within ±30 V, providing stable static elimination without the risk of introducing charge imbalances. This feature is especially critical in industries where even the smallest static deviations can compromise sensitive components or reduce product yield.

A key advantage of the SJ-M300 is its built-in monitoring and alarm system. The unit provides outputs for both ion level alarms and condition alarms through NPN open-collector connections (up to 100 mA, 40 V max.). These outputs allow operators to continuously monitor system performance, quickly detect any irregularities, and take corrective action before issues escalate. By integrating this safety function, the SJ-M300 enhances both reliability and user confidence in critical processes.

In terms of design, the SJ-M300 combines compactness with robust functionality. Measuring approximately 220 mm in total length for the SJ-M030 models and up to 380 mm for the SJ-M070 models, it delivers flexibility for integration across different system sizes. Despite its compact form, the unit is powerful and lightweight, weighing just around 300 g, making it easy to install while minimizing space requirements in production setups.

The controller is built with industrial reliability in mind. It operates on 24 VDC ±10% power with a maximum current consumption of 450 mA, ensuring compatibility with common factory power systems. Additionally, its environmental resistance supports operation at temperatures between 0 to +40°C and relative humidity of 35 to 65% RH, making it well-suited for controlled environments such as cleanrooms and assembly lines.

In summary, the Keyence SJ-M300 Spot Type Amplifier Unit delivers a powerful yet compact solution for precision static elimination. With its high-voltage pulse AC method, advanced I.C.C. ion balance control, integrated alarm outputs, and lightweight durable design, it ensures reliability and performance in applications where electrostatic control is paramount. This makes the SJ-M300 a trusted solution for industries demanding uncompromising accuracy and stability.