Honeywell 3G SmartVFD HVFD3D3A0015 Installation And User Manual page 82

Symptom
Motor
current
imbalance
greater than
3%
Adjustable
frequency
drive
acceleration
problems
Adjustable
frequency
drive
deceleration
problems
Acoustic
noise or
vibration
(e.g., a fan
blade is
making noise
or vibrations
at certain
frequencies)
31-00559-01
Possible cause
Problem with motor or
motor wiring
Problem with the
adjustable frequency
drives
Motor data are entered
incorrectly
Motor data are entered
incorrectly
Resonances, e.g., in the
motor/fan system
Test
Rotate output motor
leads one position: U to V,
V to W, W to U.
Rotate output motor
leads one position: U to V,
V to W, W to U.
If warnings or alarms
occur, see chapter 7.4
List of Warnings and
Alarms
Check that motor data
are entered correctly
If warnings or alarms
occur, see chapter 7.4
List of Warnings and
Alarms Check that motor
data are entered correctly
Bypass critical
frequencies by using
parameters in parameter
group 4-6* Speed Bypass.
Turn off overmodulation
in 14-03 Overmodulation.
Change switching pattern
and frequency in
parameter group 14-0*
Inverter Switching.
Increase Resonance
Dampening in 1-64
Resonance Dampening.
Solution
If imbalanced leg follows
the wire, the problem is in
the motor or motor wiring.
Check motor and motor
wiring.
If imbalance leg stays on
same output terminal, it is
a problem with the unit.
Contact the supplier.
Increase the ramp-up
time in 3-41 Ramp 1
Ramp Up Time. Increase
current limit in 4-18
Current Limit. Increase
torque limit in 4-16
Torque Limit Motor
Mode.
Increase the ramp-down
time in 3-42 Ramp 1
Ramp Down Time. Enable
overvoltage control in 2-
17 Over-voltage Control.
Check if noise and/or
vibration have been
reduced to an acceptable
limit.
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