GEH-6385 Reference and Troubleshooting, 2300 V Dr ives Chapter 4 Wizards
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Drive Commissioni ng: Stopping Configuration
When the drive is running n ormally and the run request becomes fa lse, the drive will
be brought to a stop. A normal stop can be generated from one of several different
inputs, but has 1 of 3 stopping behaviors as configured by the parameter Normal stop
mode.
Value of Norm al stop
mode
Behavior
Ramp stop The drive follows a l inear speed decel eration
ramp down to zero speed as configured by the
Speed Reference Ramp function. Once the drive
detects that Speed reg fbk has reached the Zero
speed level, the sequencer disables the
regulators and stops the drive.
Quick stop The speed reference is stepped to zero so that
the speed is brought is brought to zero as
quickly as possible (the drive is in current limit).
Once the drive detects that Speed reg fbk has
reached the Zero speed level, the sequencer
disables the regulators and stops the drive.
Coast stop The reg ulators are im mediately disabl ed and
power is removed from the motor so that it will
coast to a sto p. The sequencer wi ll prevent the
drive from b eing re-started until Speed reg f bk
has reached the Zero speed level, unless Flying
restart is enabled.
Note It is possible for the motor to continue to
be turned by oth er members of the process.
Note If Norma l stop mode is set to Quick stop or Coast stop, it is recommended that
the parameter Bypass Q/C stop be set to Yes. Otherwise, if the application uses Full
flux request or has a post flux delay set in the parameter, Flux off delay time, the
sequencer will not properly maintain flux on the drive.
Drive Commissioning: Flying Restart
Flying Restart is a feature that allows the drive to acquire control of a motor that is
already turning. Possible selections are as follows:
• Enable fly restart: Allows the drive to restar t while the motor speed is above the
Zero speed level.
• Disable fly restart: The motor speed must be below the Zero speed level before
the drive can be restart ed, otherwise a trip fault, Flying restrt disabl, will be
generated.
Locked shaft restart: The application must assure that the shaft is locked (by a brake
or other means) wh en the drive is started. This mode may decrease the time that it
takes to pre-flux the drive.
Note In this mode, failure to insure that the shaft is locked may cause the drive to
misoperate.