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AIRFREE SERIES
INSTRUCTION MANUAL
Code
Desc.
Mid-
E. oCxx
acceleration/mid-
deceleration/mid-
speed/over-current
fault
Notice: this fault is detected when the output current of the controller exceeds the overcurrent point.
Code
Desc.
Mid-
acceleration/mo
derate/mid-
E. oUxx
speed/stop/over
-voltage fault
Notice: this fault is detected when the bus voltage exceeds the overvoltage point. Three-phase input overvoltage point is 820 V,
single-phase input overvoltage point is 400 V.
-10-
Reason
Solution
Reducing load or replacing impulse load of large capacity
Overload
controller requires reducing load change frequency or
replacing larger capacity controller
Short circuit to the output
Check main circuit, eliminate short circuit
side of the controller
Motor damaged
Measure the resistance between the lines of the motor and
replace the motor immediately if conduction
Increase F01.22 [acceleration time 1] increase F01.23
Too short
[deceleration time 1] replace bulk control
acceleration/deceleration
time
Overvoltage suppression of
Decrease overvoltage gain F10.13[ overvoltage gain)
rising frequency may result
in accelerated overcurrent
fault
Overflow suppression of
Increase overcurrent suppression gain F10.02[ overcurrent
frequency reduction
suppression gain]
resulting in deceleration
over current fault
Controller output cable
Shorten output cable or add sinusoidal filter
exceeds allowable
maximum
Mis-operation caused by
Check the wiring of control circuit, main circuit and ground,
interference
remove interference source
Reason
Solution
High voltage
Reduce the supply voltage to a specified rang
Controller output or motor
Check main circuit wiring, eliminate short circuit
short circuit
Determine whether the acceleration stops. The fault
Too short
detection increases F01.22[ acceleration time 1] increases
acceleration/deceleration
F01.23[ deceleration time 1]
time
Overvoltage suppression of
Increase overvoltage suppression gain F10.13[ overvoltage
frequency rise may result in
suppression gain]
accelerated overvoltage
fault
Over-current suppression of
Decreasing overcurrent suppression gain F10.02[ overcurrent
frequency-lowering
suppression gain] and reducing load
overvoltage fault
Surge voltage mixed with
Add reactor to input side
input voltage
Improper setting of speed
Change of Speed Tracking Parameters (F07.25~F07.28)
tracking parameters
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