Honeywell 3G SmartVFD HVFD3D3A0015 Installation And User Manual page 49

Step 6.
Step 7.
Test motor operation
Step 1.
Step 2.
Rotor detection
This function is the recommended choice for applications where the motor starts
from standstill, e.g., pumps or conveyors. On some motors, an acoustic sound is
heard when the impulse is sent out. This does not harm the motor.
Parking
This function is the recommended choice for applications where the motor is rotat-
ing at slow speed, e.g., windmilling in fan applications. 2-06 Parking Current and 2-
07 Parking Time can be adjusted. Increase the factory setting of these parameters
for applications with high inertia.
Start the motor at nominal speed. If the application does not run well, check the
VVC+ PM settings. Recommendations for different applications can be seen in
Table 5.6.
44
are available, divide the line-line value by 2 to achieve the line to common
(starpoint) value.
It is also possible to measure the value with an ohmmeter, which takes
the resistance of the cable into account. Divide the measured value by 2
and enter the result.
1-37 d-axis Inductance (Ld)
Enter line to common direct axis inductance of the PM motor. If only line-
line data are available, divide the line-line value by 2 to achieve the line-
common (starpoint) value.
It is also possible to measure the value with an inductance meter, which
takes the inductance of the cable into account. Divide the measured
value by 2 and enter the result.
1-40 Back EMF at 1000 RPM
Enter line-to-line back EMF of PM Motor at 1000 RPM mechanical speed
(RMS value). Back EMF is the voltage generated by a PM motor when no
drive is connected and the shaft is turned externally. Back EMF is
normally specified for nominal motor speed or for 1,000 RPM measured
between two lines. If the value is not available for a motor speed of 1000
RPM, calculate the correct value as follows: If back EMF is, e.g., 320 V at
1800 RPM, it can be calculated at 1000 RPM as follows: Back EMF =
(Voltage /RPM)*1000 = (320/1800)*1000 = 178. This is the value that
must be programmed for 1-40 Back EMF at 1000 RPM.
Start the motor at low speed (100 to 200 RPM). If the motor does not
turn, check installation, general programming and motor data.
Check if start function in 1-70 PM Start Mode fits the application
requirements.
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