Mitsubishi Electric FR-A700 Technical Manual page 104

1.5.2 List of fault or alarm display
(1) Fault
common
Name
When the inverter output current reaches or
During
exceeds specific value (approximately
acceleration
220% of the rated current for
Constant
for , 230% for
F700
speed
of the rated current during acceleration/
deceleration or constant speed operation
During
(when the output frequency is within
deceleration
range of the set frequency), the protective
or stop
circuit is activated to stop the inverter
output.
If regenerative energy causes the inverter's
During
internal main circuit DC voltage to reach or
acceleration
exceed the specific value, the protective
circuit is activated to stop the inverter
Constant
output. The circuit may also be activated by
speed
a surge voltage produced in the power
supply system.
During
Definition of constant speed is when the
deceleration
output frequency is within
or stop
frequency.
If a current of 150% or larger (120% for
) of the rated output current flows and
F700
overcurrent trip does not occur in
A700 F700
activates to stop the inverter output in order
to protect the output transistors. (Overload
capacity 150% (
Resetting the inverter initializes the internal
Inverter
thermal integrated data.
For
E700 D700
output transistor element exceeds the
protection level under the condition that a
current not less than the rated inverter
current flows and overcurrent trip does not
occur (200% or less), the electronic thermal
relay activates to stop the inverter output.
(Overload capacity 150% 60s, 200% 0.5s)
The electronic thermal relay function built in
the inverter detects motor overheat due to
overload or reduced cooling capability
during constant-speed operation. If the
internal thermal integrated data reaches
100% of the value set in [Pr. 9 Electronic
thermal O/L relay], the protective circuit is
Motor activated to stop the inverter output. When
running a special motor such as a multi-pole
motor or multiple motors, provide a thermal
relay on the inverter output side since such
motor(s) cannot be protected by the
electronic thermal relay function.
Resetting the inverter initializes the internal
thermal integrated data.
common
( common)
Description
, 170%
A700
, 200% for )
E700 D700
2Hz
2Hz of the set
, the electronic thermal relay
is 120%) 60s)
F700
, if the temperature of the
Indication
Operation Parameter unit
panel FR-PU04 FR-PU07
OC During Acc
(E.OC1)
Stedy Spd OC
(E.OC2)
OC During Dec
(E.OC3)
OV During Acc
(E.OV1)
Stedy Spd OV
(E.OV2)
OV During Dec
(E.OV3)
Inv. Overload
(E.THT)
Motor Ovrload
(E.THM)
97
SPECIFICATIONS
Available Inverters
A700 F700 E700 D700
1