Fault information and trouble shooting
75
SINAMICS V50 converter
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
7.3 The general fault diagnosis and solutions
Following abnormal situations might happen in using of the drive. Try to make
simple analysis according to the instructions as below.
S.N
Abnormity
Possible causes
Countermeasure
1
Keypad LED no
display
after
power on
1. Drive power supply absent
2. The keypad or the
connecting cable between
keypad and control board is
damaged.
3. The drive is damaged in
the internal.
1. Check the input power
supply
2. Change connecting
cable between keypad
and control board or
change keypad.
3. Ask for service from
supplier
2
Motor does not
run after drive
give
run
command
1. The motor is damaged or
block up
2. The anti-reverse function
is set and rotation direction
conflicts with this setting.
3. The frequency reference
signal is zero.
4. The wiring of motor has
phase loss
1. Replace the electric
motor or rule out the
mechanical failure.
2. Remove “Anti-reverse”
setting or change the
motor running direction.
3. Check frequency
reference signal.
4. Check the electric
motor wiring.
3
Motor running
reversely
1. The motor wiring
sequence is not correct.
1. Alter the sequence of
the motor wiring
2. Adjust the function
code F0.18.
4
Motor
gets
serious vibration
1.Mechanical resonance
2.The legs of the machine
not stable
3.Output phases imbalance
1. Adjust the machine
2. Adjust the machine
legs
3. Check the load.
5
The noise of
motor is too
loud
1. Lubrication is not good or
bearing wear
2. Carrier frequency is too
low
1. Repair or replace the
electric motor.
2. Increase the carrier
frequency of the drive
Summary of Contents for SINAMICS V50
Page 1: ...SIEMENS ...
