SM01P
32
03 START WITH DC BRAKE: When a START command is given, the drive will apply DC
BRAKE VOLTAGE (Parameter 22) for the duration of DC BRAKE TIME (Parameter
21) prior to starting the motor to ensure that the motor is not turning .
04 AUTO RESTART WITH DC BRAKING: Upon a START command, after a fault, or
upon application of power, the drive will apply DC BRAKE VOLTAGE (Parameter 22)
for the duration of DC BRAKE TIME (Parameter 21) prior to starting (or restarting)
the motor .
05 FLYING RESTART 1: LOW performance . Slowest synchronization and lowest current
level . This setting results in the smoothest synchronization .
06 FLYING RESTART 2: MEDIUM performance . Faster synchronization and
higher current level . This setting allows faster synchronization while retaining
smoothness .
07 FLYING RESTART 3: HIGH performance . Fastest synchronization and highest current
level . This setting allows the fastest synchronization, but sacrifices smoothness .
When programmed for auto-restart (settings 04 - 07), the drive will attempt three restarts
after a fault . The interval between restart attempts is 15 seconds for setting 04, and 2
seconds for settings 05, 06 and 07 . During the interval between restart attempts, the display
will read “SP” to indicate Start Pending . If all three restart attempts fail, the drive will trip
into FAULT LOCKOUT (displayed “LC”) and require a manual reset . Refer to Section 16,
TROUBLESHOOTING .
The FLYING RESTART 1 - 3 settings allow the drive to start into a spinning load after a fault
or upon application of input power . They differ in the time required to find the motor speed
and the amount of current required to synchronize with it . The faster the drive attempts
to find the motor speed, the more current is required . The first two restart attempts will try
to start into the spinning load, but the third restart attempt will act like AUTO RESTART
WITH DC BRAKING .
NOTE
Settings 02 and 04 - 07 require a two-wire start/stop circuit to operate . The RUN
contact must remain closed for the power-up start and auto-restart functions to
operate .
P04
STOP METHOD
01 COAST TO STOP: When a STOP command is given, the drive shuts off the output
to the motor, allowing it to coast freely to a stop .
02 COAST WITH DC BRAKE: When a stop command is given, the drive will activate
DC braking (after a delay of up to 2 seconds, depending on frequency) to help
decelerate the load . Refer to Parameters: 21 - DC BRAKE TIME, and 22 - DC BRAKE
VOLTAGE .
03 RAMP TO STOP: When a stop command is given, the drive will decelerate the motor
to a stop at the rate determined by Parameter 20 - DECELERATION TIME .
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