Mitsubishi Electric Freqrol-A100 Instruction Manual page 75

Faults
-
1 M.NOT RUNNING (Motor does not rotate)
M.NOT RUNNING The inverter has alarm-tripped (pro-
AwRtdlceted tection activated), resulting in output
<SHIFT>
shut-off. Press the [SHIFT] key to dis-
1
play the cause of the trip.
M.NOT RUNNING The main circuit power of the inverter
~P~&spe"~&
is lost, or open phase has occurred in
1
the power supply. Check the power
supply.
STF and STR are
The output shut-off input terminal
MRS is ON.
M.NOT RUNNING The inverter starting frequency (Pr.
S e t F c ~ ~ ~
13) set value is higher than the cur-
=
rent set frequency.
M.NOT RUNNING The current input select terminal
AU
AU
1 s
OFF
remains OFF. (Not ON)
1
M.NOT RUNNING Neither of the FWD and REV keys are
~ ~ ~ f i m m a n d
ON in the PU operation mode.
1
M.NOT RUNNING The inverter cannot be started be-
MaX.Fl<StartF
cause the inverter starting frequency
Pr'13
(Pr. 13) value is higher than the maxi-
mum frequency (Pr. 1).
The inverter cannot be started be-
cause the forward or reverse rotation
has been inhibited by the value set in
Pr. 78.
The inverter cannot be started since
the current limit function is operating.
Press the [SHIFT] key to display the
assumed cause of activating the cur-
rent limit function.
The inverter cannot be started be-
cause it is the stop period in the pro-
grammed operation mode.
The inverter
I S
not started because
the operation of PI control has re-
sulted in a condition under which the
inverter need not be started.
Restart cannot be made since the
automatic restart after instantaneous
power failure select terminal CS is
OFF. Currently it is assumed to be
after an instantaneous power failure
or in the commercial power supply
switch-over operation mode.
-
2 M.SPEED ERROR
(Speed does not match the running fre-
quency set value)
Since the running frequency set
value
IS
higher than the maximum
frequency (Pr. 1 ) set value, the
running frequency remains at the
maximum frequency.
Since the running frequency set
value is lower than the minimum
frequency (Pr. 2) set value, the
running frequency has been risen to
the minimum frequency.
M.SPEED ERROR Since the running frequency set
Fump
Workln
value is within the frequency jump
i:g~$g&'
setting range ( P r 23), the running
1
frequency has jumped.
The current limit function has been
activated and forced the running
frequency to reduce. Press the
[SHIFT] key to display the cause of
activating the current limit function.
The operation of PI control has
caused the running frequency to be
offset from the set value.
-
3
M.AIDec
Err
(Acceleration/deceleration time is longer
than the value set
in Pr. 7lPr.
8)
A c c e l e r a t i o n time set value (Pr. 7) i s
0 +
6O.OOHZ
displayed.
>Frequency reached in the above set
tirne (accelerationldeceleration refer-
ence frequency, Pr. 20) is displayed.
Deceleration tirne set value (Pr. 8)
IS
dispiayed.
L b q u e n c y from which deceleration is
made in the above set time (accelera-
t i o n l d e c e l e r a t i o n r e f e r e n c e f r e -
quency, Pr. 20) is displayed.