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Over Voltage Latch
Displayed when internal DC circuit voltage
exceeds the specified value.
Low Voltage Level
Displayed when internal DC circuit voltage is less
than the specified value.
Low Voltage2 Latch
Displayed when internal DC circuit voltage is less
than the specified value during inverter operation.
Ground Trip Latch
Displayed when a ground fault trip occurs on the
output side of the inverter and causes the current
to exceed the specified value. The specified value
varies depending on inverter capacity.
E-Thermal Latch
Displayed based on inverse time-limit thermal
characteristics to prevent motor overheating.
Operates when PRT-40 is set to a value other than
‘0’.
Out Phase Open Latch
Displayed when a 3-phase inverter output has one
or more phases in an open circuit condition.
Operates when bit 1 of PRT-05 is set to ‘1’.
In Phase Open Latch
Displayed when a 3-phase inverter input has one
or more phases in an open circuit condition.
Operates only when bit 2 of PRT-05 is set to ‘1’.
Inverter OLT Latch
Displayed when the inverter has been protected
from overload and resultant overheating, based on
inverse time-limit thermal characteristics. Allowable
overload rates for the inverter are 150% for 1 min
and 200% for 0.5 sec. 200% 0.5 sec might differ
according to the inverter capacity.
No Motor Trip Latch
Displayed when the motor is not connected during
inverter operation. Operates when PRT-31 is set to
‘1’.
Safety Opt Err Latch
During an emergency, a safety feature to shut off
the inverter output operation will occur.
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