6-27
Ch
ap. 6
TROUBL
ESHO
O
TING
6.7 If the Inverter is Running on Single-Phase Power
[ 1 ] The AC fan(s) does not work. (230 V series with 60 HP or above or 460 V series with 125 HP or above)
Possible Causes
Suggested Measures
The power supply is connected to the
main circuit power input terminal L2.
Connect the power supply to L1 and L3.
[ 2 ] _ _ _ _ (under bar) appears
Possible Causes
Suggested Measures
The power supply is connected to
the main circuit power input
terminal L2 and the main power
down detection is activated.
Connect the power supply to L1 and L3.
[ 3 ] The motor does not run as expected.
Possible Causes
Suggested Measures
Large voltage ripple inside the
inverter due to single-phase power
When the inverter runs on single-phase power, the voltage ripple becomes larger than
that on three-phase power so that an operation error span becomes wider, causing lower
performance than expected.
To improve the accuracy in operation, use the inverter on three-phase power.
[ 4 ]
pbf
Charger circuit fault (230 V series with 60 HP or above or 460 V series with 125 HP or above)
Possible Causes
Suggested Measures
The power supply is connected to
the main circuit power input
terminal L2.
Connect the power supply to L1 and L3.
[ 5 ]
lin
Input phase loss
Possible Causes
Suggested Measures
The input phase loss protection is
activated.
Disable the input phase loss protection by switching Bit 1 of H98 to "0." When switching
from the factory default of H98, modify the H98 data from 82 to 81 in decimal.
[ 6 ]
0h1
Heat sink overheat,
0h3
Inverter internal overheat, or
0lu
Inverter overload
Possible Causes
Suggested Measures
The inverter was running with load
exceeding the single-phase rating.
To run the inverter on single-phase power, it is necessary to derate the output to the lower
level than that on three-phase power.
Review the load conditions to run the inverter within the single-phase rating, or increase
the inverter capacity.
Summary of Contents for FRENIC-MEGA
Page 36: ...2 6 Unit inch mm Refer to Section 2 3 3 9...
Page 356: ...MEMO...