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MSD Manual
5.0 Operation
Variable Frequency Drive Settings
Make sure that the variable frequency drive is set for operation modes and ranges that are
compatible with the MotorShield
Maximum output frequency: 80 Hz
PWM switching frequency between 2 kHz and 16 kHz. Since the MotorShield
the harmonic content from the output waveform, quiet motor operation should be achieved with a
switching frequency setting within this range. Running smaller current filters at 2 kHz switching
frequency can be too noisy, increasing switching frequency to 4 kHz or higher is advised in these
cases.
Mode of operation: "scalar" or "V/Hz" without DC braking unless the drive application has been
confirmed by TCI Technical Support.
Start Up (Commissioning)
Caution
Prior to start up, confirm the drive operation mode is set to Volts per Hertz. Consult the
drive manufacturer for configuration instructions. Drive failure or filter component
failure may occur as a result of improper drive operation mode configuration.
Caution
Ensure drive output frequency is set between 2 kHz and 16 kHz. Failure to do so may
result in damage to the filter.
Caution
Thoroughly check the installation before applying power and operating the equipment
for the first time.
Caution
The MotorShield™ can be operated without a load connected to its output terminals
(for example to facilitate confirmation of system wiring), however drive trip issues may
occur. Operation of the MotorShield™ with motor leads connected to the
MotorShield™ but open circuited at the motor is not recommended.
Before Applying Power for the First Time
Inspect the installation to make sure that all equipment has been completely and correctly
installed in accordance with the Installation Guidelines section of this manual. MotorShield
designed to remove the majority of the negative effects of pulses and edges when applied to the
motor terminals through both long and short lead lengths. As such, the best performance will be
realized when a motor is connected and operating.
Before Operating the VFD for the First Time
Make sure that the variable frequency drive is set for operation modes and ranges that are
compatible with the MotorShield
:
™
as described above.
™
17
5.0 Operation
removes most of
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is
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