Oriental motor BLH Series - Generation Condition of Alarms; Alarm List

139
Alarms
16.3 Generation condition of alarms
Alarms shown in the table will be generated if the generation condition is satised.
Alarm code Alarm name Generation condition
22h Overvoltage The inverter voltage value exceeds 38 V.
25h Undervoltage The inverter voltage value falls below 18 V.
31h Overspeed The feedback speed exceeds 5200 r/min.
21h Main circuit overheat The internal temperature exceeds 85°C (185°F).
16.4 Alarm list
Alarm
code
Number of
times
PWR/ALM
LED blinks
Alarm name Cause Remedial action
Alarm
reset
20h 7 Overcurrent
•
Excessive current was own through
the driver due to ground fault, etc.
•
The motor, the cable, and the driver
output circuit were short-circuited.
•
The driver was malfunctioned due to
noise.
•
Turn o the power, and turn on the
power again after checking if the
product is not damaged. If the alarm
is still generated, the motor, the
cable, or the driver may be damaged.
Contact your nearest Oriental Motor
sales oce.
•
Reconsider wirings and the like, and
take measures to eliminate noise.
Not
possible
21h 9 Main circuit overheat
The internal temperature of the driver
exceeded 85°C (185°F).
•
Reconsider the ambient temperature.
•
Reconsider the ventilation condition.
•
Reconsider the operating condition.
Possible
22h 4 Overvoltage
•
The internal voltage of the driver
exceeded 38 VDC.
•
A large load inertia was stopped
abruptly.
•
Check the input voltage of the power
supply.
•
If the alarm is generated during
operation, decrease a load or increase
the deceleration time.
•
If the motor is rotated by external
force, reconsider how to use or
environment.
Possible
25h 5 Undervoltage
The internal voltage of the driver fell
below 18 VDC.
•
Check the input voltage of the power
supply.
•
Check the connection between the
driver and the power supply.
Possible
28h 3 Sensor error
•
The sensor line in the motor cable was
disconnected. Or the motor cable was
come o.
•
The driver failed to recognize the hall
signals due to noise.
•
The sensor of the motor is not operated
properly.
•
Check the connection between the
driver and the motor.
•
Reconsider wirings and the like, and
take measures to eliminate noise.
•
The motor may be damaged. Contact
your nearest Oriental Motor sales
oce.
Possible
30h 2 Overload
•
A load exceeding the rated torque was
applied to the motor for 10 seconds or
more.
*1
•
An operation was performed in a state
of connecting a motor and a driver
which combination was not allowed.
•
An operation was performed in a
state where the motor power line was
disconnected.
•
Decrease a load.
•
Reconsider operating conditions
such as the acceleration time and
deceleration time.
•
If the alarm is generated at a low
temperature, warm up.
•
Check if the motor and driver
combination is correct.
•
Check if the motor power line is
disconnected.
Possible
31h 6 Overspeed
The motor feedback speed was exceeded
5200 r/min.
•
Decrease a load.
•
Reconsider operating conditions
such as the acceleration time and
deceleration time.
•
If the motor is rotated by external
force, reconsider how to use or
environment.
Possible
*1
The time until the overload alarm is generated can be changed using the "Overload alarm detection time" parameter.