Rockwell Automation Allen-Bradley 150-E, Руководство пользователя, Страница: 8 / 32

8 Rockwell Automation Publication 150-UM009E-EN-P - August 2021
Chapter 1 Introduction
Base Controller
The base controller is a standard product that uses intelligent features to
provide advanced motor control and simple diagnostics. The base controller
consists of the elements necessary to control the motor. These elements
include:
• a main micro-processor
• current sensing
• built-in adjustable overload
• solid-state power modules, and
• electro-mechanical bypass contacts.
Through the use of simple DIP switch configuration, you can configure the
controller for a variety of modes. The default configuration uses the built-in
current sensing to limit current to the motor during startup. Once up to speed,
the base controller transitions to the run mode by transitioning to internal
bypass contactors and changing the state of the auxiliary contact. The internal
bypass contactor provides decreased heating during run and removes the
SCRs from the circuit.
Fault Contactor
The 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. The fault
contact opens, removing power from the fault contactor, and thus disabling
the motor during any one of the following events:
• The power is removed from the controller.
• The motor has developed a problem including overloading due to one of
the following:
- Mechanical or electrical reasons
- Ground faults or
- Motor short circuits.
• The starter has detected an internal problem such as a shorted SCR or
overtemperature condition.
Function Overview
The Bulletin 150-E elevator panel provides solution to both advanced motor
control and simple diagnostics.
Table 1 and Table 2 provide a brief overview of
the basic product features.
150-E Series B devices use Bulletin 100-C or 100-D contactors. Series C devices use
Bulletin 100-E contactors. See
Table 20 for more information.
Table 1 - Motor Control Features
Function Description
Current Limit
Using internal current sensors, the SMC™ controller regulates the current level that is applied to
the motor over the programmed period of time. This type of motor control produces a slow start
and ensures that the current does not exceed the programmed level. This is the standard
configuration of the device and aligns well with traditional applications.
Soft Start
The voltage is ramped from an initial set point to full voltage over the programmed period of
time. This type of motor control produces a smooth start in less time than the current limit
setting. However, it does not restrict the current.
Soft Stop
The voltage is ramped down from full voltage and applied to the motor over a programmed
period of time. The result is a smooth stop.