MSC-3 Start Up
RMS line current AC input current measured in a way that reects the true heating value of the
current.
SCN The terminal on the MSC-3 for the connection of the screen of all cabled
associated with analog and digital control functions.
UL Underwriters Laboratories Inc. An American organization involved in product
safety standards and certication.
Variable Torque A load characteristic in which the driving torque requirement is signicantly
inuenced by speed. This term is most often used to describe the load
characteristic of centrifugal fans and pumps.
VRef A reference voltage (5.0V) available on the MSC-3 control terminal strip to assist
in generating a speed reference voltage etc.
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