Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

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ADVANCED APPLICATION OPTIONS
Operation with Permanent Magnet Motors
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Setup FE MagForce Pump Motor
Franklin Electric MagForce motors use an internal permanent magnet motor (IPM) design with 4-pole con -
struction and synchronous speed. This means the electrical frequency is the same speed as the shaft speed
with no slip in the rotor. Since the motor has 4 poles, the electrical frequency running the motor will need to
be twice that of a 2-pole motor for same desired RPM.
FE MagForce motors are rated to operate up to 3600 RPM in North Amer
-
ica or 3000 RPM in the EU, and not to exceed the maximum SFA rating of
the motor. To run pumps at their rated speed, use the pump RPM calcula
-
tion “Poles x RPM / 120 = Electrical Frequency (Hz)” in order to set the
VFD Max Freq [VFD–00] .
Use the following steps to configure an X-Drive for use with a FE MagForce:
Basic Setup
IMPORTANT: If the VFD has been used in a previous application, the drive parameters should be completely
reset using Parameter Reset [ADV–03] , option 4_Reset all Param .
1. Application [SET–00]: Set to option
8_FE MagForce
. This selection assumes the use of a 4-pole, 3-phase
PM motor running at 120 Hz and automatically updates all relevant parameters to the proper defaults.
IMPORTANT: The FE MagForce application should only be used with Franklin Electric MagForce motors.
Do not use this selection with other permanent magnet motors.
2. Input Phase [SET–01]: Verify that the setting matches the
type of power supply. Default = 3-phase.
3. Motor Horsepower [SET–02]: Enter the maximum rated
horsepower from the motor nameplate.
4. Motor FLA (SFA) [SET–03]: Set to the current rating on the
nameplate associated with the power rating of the pump.
5. Motor RPM [SET–04]: Enter the rated motor RPM from the
motor nameplate.
6. Motor Voltage [SET–05]: Enter the rated voltage from the
motor nameplate.
7. VFD Max Freq [VFD–00]: The highest frequency allow -
able. This should be set to the calculated electrical fre -
quency corresponding to the target pump RPM in the table
above.
8. VFD Base Freq [VFD–02]: This should be set to the motor nameplate frequency rating.
9. Carrier Freq [SET–62]: This should be set to 4 kHz for sine filters and 2 kHz for dV/dt filters.
Permanent Magnet Specific Parameters
For FE MagForce applications, the drive automatically sets:
•
Control Method [Motor–05]: This should be 2_Sensorless Vector Control.
• Motor Type [Motor–06]: This should be
2_PM-IPM
.
• Motor Poles [Motor–07]: This should be 4 for a FE MagForce motor.
• PM Inertia [Motor–08]: This value is automatically calculated.
Pump RPM Electrical Frequency
3600 4 x 3600 / 120 = 120 Hz
3450 4 x 3450 / 120 = 115 Hz
3525 4 x 3525 / 120 = 117.5 Hz
3000 4 x 3000 / 120 = 100 Hz
2850 4 x 2850 / 120 = 95 Hz
2938 4 x 2938 / 120 = 98 Hz
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