Chapter 1: Introduction
Chapter 1:2
e starter is made up of two components, the base controller and a fault contactor.
e base controller is a standard product that uses a number of intelligent features to provide
advanced motor control and simple diagnostics. e controller consists of the elements
necessary to control the motor, including the main micro processor, current sensing, built
in adjustable overload, solid state power modules, and electro-mechanical bypass contacts.
rough the use of simple dip switch conguration, the product can be congured for a
variety of modes. e default conguration uses the built in current sensing to limit current
to the motor during starting. Once up to speed the controller transitions to the run mode
by transitioning to internal bypass contactors and changing the state of the aux contact. e
internal bypass contactor provides decreased heating during run and removes the SCR’s from
the circuit
e fault contactor is controlled through the fault contact of the controller. When control
power is applied to the controller, the normally open fault contact closes and applies control
power to the coil of the contactor. e fault contact will open removing power from the fault
contactor, and thus disabling the motor during any one of the following events:
Power is removed from the controller
e motor has developed a problem including overloading due to mechanical or
electrical reasons, ground faults, or motor short circuits.
If the starter would detect an internal problem such as a shorted SCR or Overtemp
condition
Components
Overview
Fault
Contactor
PCE Controller
Only
PCEC Controller Panel
(Complete Assembly)
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