8-3
8-2 Troubleshooting of Alarm and Warning
Fault Status Digital Output
Alarm
Code
Alarm Name
and Description
Corrective Actions
Reset
Method
CN1-25
BB/A3
CN1-24
ST/A2
CN1-23
PC/A1
CN1-22
LM/A0
00
Normal
— —
If there is no Alarm, CN1-22~CN1-25
operates in accordance with default
function. Please refer to 2-2-1.
Under-voltage
01
The main circuit
voltage is below its
minimum specified
value. (190Vac)
Use multi-meter to check
whether the input voltage is
within the specified limit. If it can
not be solved, there may be
failure inside the Drive.
Turn
ALRS(DI)
ON
1 1 1 0
Over-voltage
(Regeneration error)
02
1. The main circuit
voltage is exceeded
maximum allowable
value. (410V)
2. Regeneration
voltage is too high.
1. Use multi-meter to check
whether the input voltage is
within the specified limit.
2. Check the Parameter Cn012
if it is setting correctly.
3. If this alarm appears during
operation.
Extend ac/deceleration time
or reduce load ratio in the
permitted range. Otherwise,
an external regeneration
resistor is needed.
(Please contact your supplier
for assistance.)
Turn
ALRS(DI)
ON
1 1 0 1
Motor Over-load
03
The drive has
exceeded its rated load
during continuous
operation. When the
loading is equal to 2
times of rated loading,
alarm occurs within
10sec.
1. Check connection for Motor
terminal s (U,V,W) and
Encoder.
2. Adjust the Drive gain, If gain
is not correctly adjusted, it
would cause motor vibration
and large current will lead to
motor over load.
3. Extend acc/deceleration time
or reduce load ratio in the
permitted range.
Turn
ALRS(DI)
ON
1 1 0 0
Drive Over-current
04
Drive main circuit Over
current or Transistor
error.
1. Check connection of the
motor cable (U,V,W) and
encoder.
Check power cable
connection. Refer to the
diagram in Chapter 2.
2. Turn off the power, and turn
on again after 30 min. If the
alarm still exists, there may
be power module
malfunction or noise consider
the drive for test and repair.
Reset
Power
Supply
1 0 1 1
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