Hapter, Introduction to the oim – Rockwell Automation GV3000/SE Operator Interface Module (OIM) User Guide User Manual

Page 9

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Introduction to the OIM

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HAPTER

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Introduction to the OIM

The Operator Interface Module (OIM) is a keypad and display that connects to
Reliance GV3000/SE™ drives. It is compatible with version 6.0 and older versions of
the GV3000/SE drive software. The OIM communicates serially to the Regulator
board.

The OIM allows you to:

access and change drive parameters, which tune the drive, scale the inputs and
outputs, program drive limits, and configure remote interfaces

operate the drive

review and clear the faults

review active alarms

monitor drive outputs such as motor speed and motor current

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The OIM has two operating modes: monitor and program. Monitor mode is the normal
operating mode and allows you to view up to six drive outputs. Program mode allows
you to access and change drive parameter settings.

Through the OIM, the drive can be programmed for either volts/hertz (V/Hz) or vector
regulation. The type of regulation that is selected will determine which parameters you
can access and which outputs are displayed in monitor mode. V/Hz regulation
provides open-loop volts per hertz regulation, which is appropriate for general
purpose applications.

For vector regulation, you may select either flux vector control (FVC) or sensorless
vector control (SVC). FVC uses the actual encoder value for speed feedback, and
therefore requires an encoder mounted to the motor and connected to the drive. SVC
is an extension of the FVC regulator. It provides performance close to FVC without
using an encoder. Control is based on estimated speed feedback.

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Differences Between the OIM and the Front Panel
Keypad/Display

In most cases, the OIM performs the same functions as the keypad/display on the
front panel of the GV3000/SE drive. Actions performed on the OIM are reflected in the
front panel keypad/display. For example, if the auto/manual status or the reference is
changed through the OIM, it is also changed on the front panel keypad/display.

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