127MG.30.A7.02 - VLT
®
is a registered Danfoss trademark
EXCEPT
XXXX ERROR
PC=XXXX
Display messages
Alarm messages
(continued)
• If disabled keypad is pressed:
KEY DISABLED
Indicates factory setup.
Change parameter 001 to setup 1-4.
Or the key is disabled (parameters
006-009).
• If data change only possible when the
frequency converter is stopped is
attempted: ONLY ON STOP
• If data change is attempted with open
LOCK-switch: PROG.LOCKED
• If data change is attempted out of
allowed range: LIMIT
Error messages
Auto optimization ok (TUNING OK):
Auto optimization has taken place.
Auto optimization fault
(TUNING. FAULT): Fault code 13
The reasons for auto optimization fault can
be the following:
The connected motor is very small or very
large in relation to the VLT
®
frequency
converter.
The motor is loaded more than 50%.
The connected motor is a special motor,
e.g. a synchronous motor.
The fault can be due to electrical noise,
e.g. no or poor earth connection to the
VLT
®
frequency converter.
The reason can also be attempts at auto
optimization on a very small motor in relation
to the VLT
®
frequency converter (5-6
undersizes).
The VLT
®
frequency converter performs a
self-test of the control card when the mains
voltage is connected, giving the following
message:
The reason for the fault message is a fault
on the control card or possible option card.
Contact Danfoss.
TESTING
CONTROL CARD
FAULT_XXXX
EXCEPT fault::
Start-up test:
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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