5-2
oV-C
Excessive Voltage
during operation/
deceleration
1.Deceleration time setting
too short or excessive load
inertia
2.Power voltage varies widely
(fluctuates)
1.Set a longer deceleration
time
2.Consider use of a brake
resistor and/or brake module
3.Consider use of a reactor at
the power input side
PF
Input phase Loss
Abnormal fluctuations in the
main circuit voltage
1.Check the main circuit
power supply wiring.
2.Check the power supply
voltage
Faults which can be recovered manually but not automatically
Display content
Cause
Corrective
action
oC
Over-current
during stop
Detection circuit malfunction
Consult with the supplier
oL1
Motor overload
loading too large
Consider increasing the Motor
capacity
oL2
Inverter overload
Excessive Load
Consider increasing the
inverter capacity
LV-C
Voltage too low
during operation
1.Power voltage too low
2.Power voltage varies widely
(fluctuates)
1.Improve power quality
2.Consider adding a reactor at
the power input side
5.1.2 Keypad Operation Error Instruction
Display content
Cause
Corrective
action
LoC
1.Parameter
already locked
2.Motor direction
locked
3.Parameter
password (13-07)
enabled
1.Attempt to modify
frequency parameter while
13-06>0.
2.Attempt to reverse
direction when 11- 00=1
。
3.Parameter (13 - 07)
enabled, set the correct
password will show LOC.
1.Adjust 13-06
2.Adjust 11-00
Err1
Keypad
operation
error
1.Press
▲
or
▼
while
00-05/00-06>0 or running
at preset speed.
2.Attempt to modify the
Parameter.Can not be
modified during operation
(refer to the parameter
list)
1.The
▲
or
▼
is available for
modifying the parameter
only when 00-05/00-06=0
2.Modify the parameter in
STOP mode.
Err2
Parameter setting
error
1.00-13 is within the range
of (11-08 ±11-11) or
(11-09 ±11-11) or (11-10
±11-11)
2.00- 12
≦
00-13
1. Modify 11-08~11-10 or
11-11
Set 00-12>00-13
Err5
Modification of
parameter is not
available in
communication
1.Control command sent
during communication.
2.Attempt to modify the
function 09-02~ 09-05
during communication
1.Issue enable command
before communication
2.Set parameters 09-02~
09-05 function before
communication
