Installation manual

Diagnostics and troubleshooting
S1A53838 09/2011 153
Alarm Conditions
Alarms do not cause the drive to enter a fault condition.
Alarm Codes
Code Description Possible causes Remedies
Atn1
[
Auto tune]
• Auto-tuning in process • Normal if it the message disappears
after a few seconds.
CLr
[
Reset active]
• This message is displayed after the
STOP key is pressed while an detected
fault is displayed.
• Press the STOP key again to clear the
detected fault.
db
[
DC braking]
• DC braking in process • The alarm code goes off in several
seconds if no trouble occurs.
dbOn
[
dbOn]
• Motor shaft fixing control •
E-17
[
HMI error]
• A graphic display option key has been
held down for more than 20 seconds.
• A graphic display option key may not be
operating properly.
• Release the graphic display option
key.
• If this does not clear the error, replace
the drive.
EI
[Excess value]
The number
of digits that can be
displayed has been
exceeded
• The number of digits entered for values
such as frequencies is more than 4 (the
upper digits have priority).
• Lower the frequency free-unit
magnification [Customized freq val]
(F702).
EOFF
[
Loc. Stop en.]
• The operation panel is used to stop the
operation in automatic control or remote
control mode.
• Press the STOP key for an emergency
stop. To cancel the emergency stop,
press any other key.
Err1
[
Speed ref alarm]
• The frequency setting signals at points 1
and 2 are set too close to each other.
• Set the frequency setting signals at
points 1 and 2 apart from each other.
h999
[Pin&1MWh]
Integral input
power
• Integral input power is more than
999.99 kWh.
• Press and hold down the ENT key for
3 s or more when power is off or when
the input terminal function CKWH is
turned on or displayed.
H999
[Pout&1MWh]
Integral
output power
• Integral output power is more than
999.99 kWh.
• Press and hold down the ENT key for
3 s or more when power is off or when
the input terminal function CKWH is
turned on or displayed.
HEAd
End
[Head]
[End]
Display of first/last data
items
• The first and last data item in the auh
data group is displayed.
• Press MODE key to exit the data
group.
H1
LO
[High]
[Low]
Parameter adjustment
error
• During programming, a value was
entered that exceeds the maximum or
minimum value of the parameter.
• Enter a value within the bounds of the
parameter
InIt
[
Initialization]
• Parameters are being initialized to
default values.
• Normal if the message disappears
after several seconds.
LStp
[Low speed stop]
Auto-stop
because of continuous
operation at the lower-limit
frequency
• The automatic stop function selected
with F256 was activated.
• To deactivate the automatic stop
function, increase the frequency
command above the lower-limit
frequency LL+F391 or turn off the
operation command.
NOFF
[
Line undervolt flt]
• The phase-to-phase input voltage is too
low.
• Measure the main circuit supply
voltage. If the voltage is at a normal
level, the drive requires repair.
OFF [Drive stop]
• The ST-CC (run permissive) circuit is
open.
• Close the ST-CC circuit.
nSt [Lock State]
• The Li is already active when the function
is validated.
• The Li is already active when a
configuration transfer is done with the
function is validated.
• Deactivate the active Li configured.
rtrY
[
Auto reset]
• The drive is in the process of restart.
• A momentary stop occurred.
• The drive is operating normally if it
restarts after several seconds.
StOp
[Stop supply]
Momentary
power loss slowdown stop
prohibition function
activated.
• The slowdown stop prohibition function
set with F302 (momentary power loss
ride-through operation) is activated.
• To restart operation, reset the drive or
input an operation signal again.