Danfoss VLT 3000 Series Product Manual page 144

19)
Symptom
Motor stationary, light
in display, but no fault
message displayed
144
Fault location
20)
Start the VLT
converter by pressing
on the keyboard.
21)
Is the display frozen,
i.e. the display cannot
be changed or is
undefinable?
No
23)
Is the motor connected
correctly and are all
motor phases OK?
24)
The frequency converter
must be set to run using
local references.
The parameter settings
must be changed thus:
parameter 003 = local
parameter 004 =
reference change by
means of
Is the motor running?
Yes
25)
Check whether the control
signals to the control card
are OK.
®
MG.30.A7.02 - VLT is a registered Danfoss trademark
frequency
®
Start
Yes
Yes
and .
+ –
No
22)
Check whether the
following precautions have
been taken!
• Have screened cables
been used?
• Are the screened cables
connected correctly?
Yes
26)
Call Danfoss
for assistance