Instruction Manual

7–58 Programming
Motor Control
[Base Voltage]
This value should be set to the motor nameplate rated
voltage.
Parameter Number 18
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rtd Volts
Factory Default Drive Rated Volts
Minimum Value 25% of Drive Rated Voltage
Maximum Value 120% of Drive Rated Voltage
[Base Frequency]
This value should be set to the motor nameplate rated
frequency.
Parameter Number 17
Parameter Type Read and Write
Display Units / Drive Units 1 Hertz / Hertz x 10
Factory Default 60 Hz
Minimum Value 25 Hz
Maximum Value 400 Hz
[Maximum Voltage]
This parameter sets the highest voltage the drive will
output for “Fixed Boost” & “Full Custom.”
Parameter Number 20
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rtd Volts
Factory Default Drive Rated Volts
Minimum Value 25% of Drive Rated Voltage
Maximum Value 120% of Drive Rated Voltage
[Run/Accel Volts]
In“FixedBoost”or“FullCustom”modes,theoutputvoltage
isreducedbytheprogrammedamountwhileatfrequency.
Parameter Number 317
Parameter Type Read and Write
Display Units / Drive Units 1% / 4096 = 100%
Factory Default 100%
Minimum Value 50%
Maximum Value 100%
[Sync Loss Sel]
This parameter allows selection of various sync loss
modes.
Important: The motor
must be connected to the drive
when the sync loss function is enabled.
Parameter Number 310
Parameter Type Read and Write
Factory Default “Disabled”
Units Display Drive
“Disabled” 0 sync loss detection and recovery
function is disabled
“Alarm” 1 sync loss detection and recovery
function is enabled
“Fault” 2 sync loss detection and recovery
function isenabled. Ifthe syncloss
continues for longer than the time
set by [Sync Loss Time], the drive
faultswith aF67“MotorSync Loss”
fault indication.
Motor Sync Loss Detection for
Synchronous Motors
This function is enabled if [Sync Loss Sel] is set to “Alarm” or “Fault”.
Themotorsynclossdetectionattemptstosensewhenasynchronousmotorhaspulledoutofsync.When
this happens the motor will typically draw a high current and the power flow between the motor and the
drive oscillates.Based on this, thedetection algorithm looks for alarge oscillation of the current (relative
to voltage) angle while the current is high. When loss of sync is detected, the “Sync Loss” bit in [Drive
Alarm 1]isset. Additionally,the drivewilladd anadditionalvoltageset by[SyncLoss Comp]tothe output
voltage. This will increase the pull-in torque to allow the motor to re-synchronize.
If [SyncLoss Sel] is setto “Fault,” the time the“Sync Loss” bitis set is timed.If it exceeds the timeset by
[Sync Loss Time], the drive faults with a F67 “Motor Sync Loss” fault indication.