SJ Series

Keyences’ highly comprehensive range of static eliminators offers significant benefits. Featuring a differential method that eliminates the need for adjustments, they produce oppositely charged ions and create a high-precision ion balance. They are twice as fast as the best standard system on the market and eliminate clogging, a typical problem that can slow down production.

Static electricity causes problems, such as dust adhesion or improper placement of components during assembly or packaging operations, in electronics, cosmetics, plastic film production, pharmaceutical packaging and many other industrial processes and applications.

Static electricity is eliminated by delivering a stream of oppositely charged ions to the surface to be treated. The charge to be delivered depends on the manufacturing parameters, the humidity level, the temperature and other conditions. The SJ Series features a built-in differential system – known as the I.C.C. method – that continuously calculates the optimal amount of ions to be supplied. No operator adjustments are necessary, even in high-static environments.

The SJ Series eliminates static charges quickly and more completely, even at high speeds. It is extremely easy to install. Simply connect it to a reference potential and it's ready to go. Only Keyence offers such capability. Competing brands offer sensor-based control, which results in higher costs and complexity.

The SJ Series has adopted the pulse AC method, which applies alternating positive and negative high voltage to an electrode probe to make it produce ions of both polarities. Compared to the conventional AC method, the amount of ions generated is higher and the oscillating frequency can be changed. The pulse AC method can therefore be used to eliminate static electricity in any situation, such as fast-moving targets or work areas.

By combining these two functions, the SJ Series is the fastest in its class. It boasts a cycle frequency of 66 Hz – twice that of competing brands.

A common problem with static eliminators is that their electrode probes become clogged and must be cleaned three to four times a month. With SJ Series, the electrode probes need to be cleaned only once every three or six months. This difference stems from the materials used for the electrode probes (silicone or tungsten) and the laminar flow of air that guides charges more directly. Due to the considerably longer maintenance intervals, the SJ Series features alarm outputs that provide information on the system's operation or the drift of the electrostatic potential zero so that preventive maintenance may be performed to optimise productivity. The broad SJ Series range features the right model for any application. There are three main types of eliminators: bar-type units for large surfaces, blower-type units for medium-sized surfaces and spot-type units for small surfaces. They all operate using the same principles and offer the same benefits.

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