- General Electric Computer Accessories User Manual

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 4 Wizards •
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• 4-29
Line reference specifies the source of the utility line reference. Set to Internal to use
the internally generated line reference signal. If required by your application an
external line reference may be needed in which case set Line reference to match the
type of external line reference signal you have.
Utility swgr close specifies the I/O point that drives the utility switchgear close
command during the motor transfer sequence. Set Utility swgr close to the desired
I/O point.
MA pickup time specifies the time allowed for the MA contactor to close once it has
been commanded to close during the motor transfer sequence. Set MA pickup time to
the desired MA contactor close delay time.
For more information on the Line Transfer Tuneup wizard and issues related to the
setting of these parameters see the "Innovation Series Line Transfer Application
Guide".
Line Transfer Tuneup: Motor Capture Data
This wizard can configure the drive to perform motor transfer and capture
operations. The motor capture data parameters configure the drive to transfer a motor
to the utility line. Enter the motor capture data parameters.
Capture mtr req sel selects the signal that initiates the motor capture. Set Capture
mtr req sel to the desired signal.
Anticipated torque specifies the expected motor torque at the time of motor capture.
This parameter has an effect on the smoothness of the capture. By correctly
anticipating the amount of torque the control can more smoothly capture the motor.
This value is in PU of motor rated torque and should be determined by observing the
load torque on the motor when running at synchronous speed. If you are unsure of
the value to use then use the default value.
Utility swgr open specifies the I/O point that drives the utility switchgear open
command during the motor capture sequence. Set Utility swgr open to the desired
I/O point.
For more information on the Line Transfer Tuneup wizard see the "Innovation Series
Line Transfer Application Guide".
Line Transfer Tuneup: Operation
This wizard configures the drive to perform motor transfer and capture operations.
This is the section of the wizard that will verify operation of the MA contactor,
check for correct phase rotation at the drive output and measure the phase angle and
voltage magnitude relationships needed to carryout transfer commands in the future.
Utility characteristics can be measured while the motor is running off the utility. If
the motor is not running off the utility and cannot be started across the line,
disconnect the motor leads BEFORE running this command.
Verify that the utility switchgear permissives are correct before executing this
command so that you will be able to manually close the switchgear when asked. This
wizard will not send commands to the utility switchgear.
To proceed, click the Execute button.