98
SPECIFICATIONS
Fin overheat
If the heatsink overheats, the temperature
sensor is actuated to stop the inverter
output.
(E.FIN)
H/Sink O/Temp
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Instantaneous
power failure
If a power failure occurs for longer than
15ms (this also applies to inverter input
shut-off), the instantaneous power failure
protective function is activated to trip the
inverter in order to prevent the control circuit
from malfunctioning. If a power failure
persists for longer than 100ms, the fault
output is not provided, and the inverter
restarts if the start signal is ON upon power
restoration. (The inverter continues
operating if an instantaneous power failure
is within 15ms.) In some operating status
(load magnitude, acceleration/deceleration
time setting, etc.), overcurrent or other
protection may be activated upon power
restoration.
(E.IPF)
Inst. Pwr. Loss
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Undervoltage
If the power supply voltage of the inverter
decreases, the control circuit will not
perform normal functions. In addition, the
motor torque will be insufficient and/or heat
generation will increase. To prevent this, if
the power supply voltage decreases below
approx. 150VAC (approx. 300V for the 400V
class or less), this function stops the inverter
output.
When a jumper is not connected across P/+
and P1, the undervoltage protective function
is activated.
(E.UVT)
Under Voltage
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Ph
a
se
lo
ss
Input
This fault is output when function valid
setting ( = 1) is set in [
Pr. 872 Input phase loss
protection selection
] and one phase of the
three phase power input is lost.
This fault is also output when phase-to-
phase voltage of the three-phase power
input becomes unbalanced by large in
.
(E.ILF)
Fault 14
Input
phase
loss
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Output
Because [
Pr.251 Output phase failure
protection selection
] is set valid (=1), this
function stops the inverter output if one of
the three phases (U, V, W) on the inverter's
output side (load side) is lost.
(E.LF)
E.LF
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Stall prevention
If the output frequency has fallen to 0.5Hz
by stall prevention operation and remains
for 3s, the inverter trips. (OL appears while
stall prevention is being activated.)
For
, when speed control is performed
by Real sensorless vector control or vector
control, the inverter output is stopped if
frequency drops to the [
Pr. 865 Low speed
detection
] (initial value is 1.5Hz) setting by
torque limit operation and the output torque
exceeds [
Pr. 874 OLT level setting
] (initial
value is 150%) and remains for more than
3s.
(E.OLT)
Stll Prev STP
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Name
Description
Indication
Available Inverters
Operation
panel
Parameter unit
FR-PU04 FR-PU07
A700
F700
E700
D700
E700 D700
A700
Содержание FR-A700 Series
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