YASKAWA CIMR-ACA4011 Instruction Manual page 321

Display
Control Circuit Undervoltage
The control circuit DC voltage is
UV1
below the Undervoltage Detection
Undervolt-
Level (L2-05).
age
200 V class: Approx. 190 V
400 V class: Approx. 380 V
UV2
Control Power Fault
CTL PS
Not enough voltage is being produced
Undervolt
by the power supply.
Power Supply Frequency Fault
FDV
The fluctuation in the power fre-
Freq DEV
quency exceeded the allowable
amount.
Power Phase Rotation Variation
SRC
After control power supply is on, the
Power
direction of the phase rotation
Phase Err
changes.
Output Open-Phase
LF
An open-phase occurred at the MxC
Output Pha
output.
Loss
This fault is detected when L8-07 is
set to "Enabled."
OH
(OH1)
Cooling Fin Overheating
Heatsnk
The temperature of the MxC's cooling
Overtemp
fins exceeded the setting in L8-02 or
(Heatsnk
105°C.
MAX
Temp)
-4
7
Table 7.1 Fault Displays and Processing (Continued)
Meaning
• There was a momentary loss in
power.
• The wiring terminals for the input
power supply are loose.
• Too much voltage fluctuation in the
input power supply.
An open-phase occurred with the
input power supply.
• An open phase occurred in the input
power supply.
• A momentary power loss occurred.
• The wiring terminals for the input
power supply are loose.
• The voltage fluctuations in the input
power supply are too large.
• The voltage balance between phase
is bad.
An open phase occurred in the input
power supply.
• The phase sequence changed during
run.
• An open phase occurred in the input
power supply.
• A momentary power loss occurred.
• The wiring terminals for the input
power supply are loose.
• The voltage fluctuations in the input
power supply are too large.
• The voltage balance between phase
is bad.
• There is a broken wire in the output
cable.
• There is a broken wire in the motor-
winding.
• The output terminals are loose.
The motor being used has a capacity
less than 5% of the rated output cur-
rent of the MxC.
The ambient temperature is too high.
There is a heat source nearby.
The MxC's cooling fan has stopped.
Probable Causes
Clear the fault after correcting the
power or removing its cause.
Check and correct the open-phase
condition or the imbalance of the
input power.
Clear the fault after correcting the
problem or removing its cause.
• Cycle power to the MxC.
- • Replace the MxC if the fault
Clear the fault after correcting the
power supply or removing its
cause.
Check and correct the open-phase
condition or the imbalance of the
input power.
Clear the fault after correcting the
power or removing its cause.
Clear the fault after correcting the
problem or removing its cause.
Check the motor and MxC capac-
ity.
Install a cooling unit.
Remove the heat source.
Replace the cooling fan. (Contact
our sales representative.)
Corrective Actions
continues to occur.