Rockwell-automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE Uživatelský manuál Strana 16

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1-8
STC Starting Torque Controller
Applications (cont.)
Figure 1.10 Paint Shaker
Problem: The commercial paint shaker was operated with a single
phase motor and used across-the-line starting. This
method of starting caused the facility’s line voltage to
dip. The building’s fluorescent lighting, with electronic
ballasts, was extremely sensitive to line voltage dips and
would momentarily shut off when the paint shaker was
started.
Solution: A single-phase STC controller was used to provide a soft
start to the paint shaker. The ramp time was set to three
seconds, thereby eliminating the line voltage dip.
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