DYNAVERT
®
T
SERVICE
19
Version: 11.10.02
4Bs0503en/002
2.3.3
Important general faults
Faults that have a "!! Fault !!" in the first display line can be reset by means of an inverter reset, provided that the
fault cause no longer exists. These are faults that are not necessarily caused by an inverter defect. They may as well
be caused by incorrect settings (parameterization) or by external influences.
If one of the following faults arises the inverter switches off electronically:
Fault message
on the display
Possible fault cause
!!Fault !!
Not ready for travel
The inverter has received travel commands although it did not give a ready signal;
different travel commands too quickly one after another; travel command given
during check up; new travel command despite alarm signal.
!!Fault !!
Fault tacho
No tacho connected, however parameterized. Fault in actual value acquisition
(tacho) detected; broken cable missing supply voltage at tacho, too high motor slip
i.e. slip frequency > 4-fold rated slip frequency, with this no actual value; pulse
frequency > 550 kHz; motor parameter incorrect; fault in the control; wrong type of
tacho (HTL-level.
!!Fault !!
Overspeed
The permissible parameterized maximum speed has been exceeded during travel; in
case check parameterizing vRmax.
!!Fault !!
Checksum custom.par
Board info defectly
!!Fault !!
Overcurrent
Short-circuit; low-resistance earth fault.
!!Fault !!
Overvoltage
Mains voltage failure or real under voltage; phase failure; fuse defective; power unit
defective incorrect adjustment of parameter V mains nom..
!!Fault !!
Undervoltage
Mains voltage failure or real under voltage; phase failure; fuse defective; power unit
defective incorrect adjustment of parameter V mains nom..
!!Fault !!
Invertertemp.
Inverter overloaded; defective fan; device utilization too high regarding installation
height; coolant temperature too high; ambient temperature too high
!!Fault !!
Motor PTC thermistor
PTC thermistor at terminals X52:1/2; motor overloaded; bad or insufficient motor
ventilation or too high ambient temperature.
!!Fault !!
Short circuit
Short circuit in the line inverter output/motor or in the motor itself;
!!Fault !!
Earth fault
Fault in the motor or in motor supplies; device internal earth connection, too long
motor line; too small insulation resistance.
!!Fault !!
Insulation fault
Only with 500 V devices and IT configuration:
Earth connection at one of the output phases (U2, V2, W2) or the intermediate circuit
potentials.
!!Fault !!
Travelling contactor
Valid for 1 travelling contactor operation: Travelling contactor does not release after
travel stop or energy flow to the motor is not interrupted; connection X1:28 via the
break of the remaining contactor to X1:38 is missing. Operation with 2 travelling
contactors: Connect X1:28 (+24V) to X1:38.
!!Fault !!
Direction-Signals
No direction information to the DYNAVERT L of both the direction inputs (X1:36;
X1:37) low or high: unpermissible status; parameterizing for direction setting faulty
(see
P-SYSTEM DATA
).
