E6581386
M-6
13
(Continued)
Error
code
Problem Possible causes Remedies
NUVR
Auto-stop
because of
continuous
operation at the
lower-limit
frequency
•The automatic stop function of
H is being performed.
•This function is deactivated when the command
frequency becomes 0.2Hz or more higher than the
lower-limit frequency (LL) or when a command for
stopping operation is entered.
UVQR
Momentary power
failure slowdown
stop prohibition
function activated.
•The deceleration stop function of
WXE (regenerative power
ride-through control) is activated.
•To restart operation, reset the inverter or input an
operation signal again.
JGCF/
GPF
Display of
first/last data
items
•First and last data in the CWJ
group.
•To exit from the group, press the MODE key.
WPFZ
Key operation
permitted
temporarily
•This message appears if the
ENTER key is pressed and held
down for 5 seconds or more when
key operation is prohibited by
H.
•When this message is displayed, all the keys are
operational. To prohibit key operation again, turn
off the inverter and then turn it back on.
C
Break in analog
signal cable
•The signal input via VI/II is below
the analog signal detection level
set with H and setting value
of H is 1.
•Check the cables for breaks. And check the
setting of input signal or setting value of H
and H.
Note: In the case of DC injection breaking ON/OFF function is selected for an input terminal; if “FD” disappears as a
result of open-circuit between the terminal and CC, it is normal.
[Pre-alarm display]
Error
code
Description Possible causes Remedies
E Overcurrent pre-alarm Same as QE (Overcurrent) Same as QE (Overcurrent)
R Overvoltage pre-alarm
Achieving PBR operation
level
Same as QR (Overvoltage)
R blink while PBR is operating is not
an error.
Same as QR (Overvoltage)
R blink while PBR is operating is not
an error.
N Overload pre-alarm Same as QN and QN (Overload) Same as QN and QN (Overload)
J Overheat pre-alarm Same as QJ (Overheat) Same as QJ (Overheat)
V Communication error •Various transmission errors occur
when computer is linked up with
inverter system.
•Various transmission errors occur in
inverter to inverter communication
(slave side). Time-out or trip in master
side.
•For measures to correct various kinds
of data transmission errors, refer to
the instruction manual for the
communications device used
specified in Section 6.36.
•Check the master inverter.
If two or more problems arise simultaneously, one of the following alarms appears and blinks.
ER, RN, NJ, ERN, ……, ERNJ
The blinking alarms E, R, N, J, Vare displayed in this order from left to right.
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