34
•
VACON
F
AULT
TRACING
Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205
5
27
Back EMF protection
Drive has detected that the mag-
netized motor is running in start
situation.
• A rotating PM-motor
Make sure that there is no
rotating PM-motor when
the start command is
given.
34
Internal bus
commu-
nication
Ambient interference or defective
hardware
If the fault recurs, contact
your nearest distributor.
35
System fault
System does not work
Contact the nearest
dis-
tributor.
41
IGBT Overtemperature
Overtemperature alarm is issued
when the IGBT switch tempera-
ture
exceeds 110 °C.
Check loading.
Check motor size.
Make identification run.
50
Analog input
Iin < 4
mA
(selected signal
range 4 to 20
mA)
Current at the analog input is <
4mA
• control cable is broken or
loose.
• signal source has failed.
Check the sensor and
sensor cable.
51
External fault
Digital input fault. Digital input
has been programmed as exter-
nal fault input and this input is
active.
Check the programming
and the device indicated
by
the external fault
infor-
mation. Also the
cabling
of this device.
53
Fieldbus fault
The data connection between the
fieldbus Master and the fieldbus
of the drive has broken.
Check installation.
If installation is correct
contact the nearest Vacon
distributor.
80
Interlock alarm
An autochange with interlocks
(P1.7) has been selected and the
controller fails to detect them.
Use the monitoring menu
(M1.14) to check the state
of
digital inputs D14, D15
and
D16 and also check
their
cabling.
81
System
identification
fault
Pressure unit discharge has not
been closed properly.
Check that the pressure
unit discharge opens and
closes correctly.
82
Output
frequency <
Reference
frequency
The pump is unable to rotate at
system-desired speed due to
high
consumption or to the mains
power supply being too low.
Check the controller
power
supply and that the
pump is
not blocked or the
discharge piping dirty.
Fault
code
Fault name
Possible cause
Correcting actions
Table 5.1: Fault codes
