Honeywell SmartVFD HVAC2 Applications Manual page 128

NOTE: The best performance can be reached by
running motor identification, see See
"Motor identification" on page 128..
Switching frequency
Motor noise can be minimised using a high
switching frequency. Increasing the switching
frequency reduces the capacity of the frequency
converter unit.
Switching frequency for SmartVFD HVAC2:
1.5...16 kHz.
Motor identification
Not active
0 =
Standstill identification
1 =
When Standstill identification is selected, the
drive will perform an ID-run when it is started
from selected control place. Drive has to be
started within 20 seconds, otherwise
identification is aborted.
The drive does not rotate the motor during
Standstill identification. When ID run is ready the
drive is stopped. Drive will start normally, when
the next start command is given.
After end the identification, the drive need stop
the start command. If control place is Keypad,
user need press stop button. If control place is
IO,user need put DI(Control signal) inactivate. If
control place is fieldbus, user need set the control
bit to 0.
The ID run improves the torque calculations and
the automatic torque boost function. It will also
result in a better slip compensation in speed
control (more accurate RPM).
The parameters below will change after ID run
successfully,
a. P1.8 Motor control mode
b. P1.9 U / f ratio
c. P1.12 U / f mid point frequency
d. P1.13 U / f mid point voltage
e. P1.14 Zero freq voltage
f. P1.19 Motor identification (1->0)
g. P1.20 Rs voltage drop
NOTE: The nameplate data of the motor has to
be set BEFORE doing ID run.
128 31-00108—07