Alarms, warnings
−166−
9 Inspection, troubleshooting and remedial actions
Alarm lists
Alarm
code
Alarm type Cause Remedial action
Reset by
the ALM-
RST input
Motor
excitation
*1
Excessive position
deviation
•
When the motor was in an excitation
state, the deviation between the
command position and actual
position at the motor output shaft
exceeded the value set in the
“Excessive position deviation alarm”
parameter.
•
A load is large or the acceleration/
deceleration time is too short.
•
Decrease the load.
•
Reconsider the operating
conditions such as the
acceleration/deceleration time.
Possible
Excitation
o
Overcurrent
Excessive current was own through
the driver due to ground fault, etc.
•
Check whether the wiring
between the driver and motor is
damaged.
•
If the alarm cannot be cleared
even when the power supply is
turn o and on again, contact
your nearest Oriental Motor sales
oce.
Not
possible
Overvoltage
•
The power supply voltage exceeded
approximately 120% of the rated
voltage.
•
A load exceeding the allowable
gravitational capacity of the motor
was driven or sudden starting/
stopping of a large inertia was
performed.
•
Check the voltage of the main
power supply.
•
If the alarm is generated during
operation, decrease a load
or increase the acceleration/
deceleration time.
•
Connect the regeneration resistor.
Undervoltage
The power supply voltage dropped
below approximately 60% of the rated
voltage.
•
Check the voltage of the main
power supply.
•
Check the wiring of the power
supply cable.
Possible
Sensor error
The encoder line of the motor was
disconnected.
Or the encoder connector was come
o.
Check the connection between the
driver and the motor.
Not
possible
Main circuit output
error
*2
The power line of the motor was
disconnected.
Or the motor power connector was
come o.
Check the connection between the
driver and the motor.
Overload
•
A load exceeding the rated torque
was applied to the motor for
approximately ve seconds or more.
•
The motor was started in a state
where the motor temperature was
low.
•
Decrease the load.
•
Reconsider the operating
conditions such as the
acceleration/deceleration time.
Possible
Overspeed
The rotation speed of the motor
output shaft exceeded approximately
5200 r/min.
•
Decrease the load.
•
Reconsider the operating
conditions such as the
acceleration/deceleration time.
EEPROM error
•
Stored data was damaged.
•
Data became no longer writable or
readable.
•
Initialize all parameters.
•
If the alarm cannot be cleared
even when the power supply is
turn o and on again, contact
your nearest Oriental Motor sales
oce.
Not
possible
Initial sensor error
The encoder line of the motor was
disconnected before the main power
supply was turned on. Or the encoder
connector was come o.
Check the connection between the
driver and the motor.
*1
When an alarm generates, the motor operates as follows.
Excitation o: When an alarm is generated, the motor current will be cut o and the motor will lose its holding torque. In the case of
the electromagnetic brake motor, the electromagnetic brake automatically holds the position.
Excitation on: Even when an alarm is generated, the motor current will not be cut o and the motor excitation state will be continued.
*2
This alarm is not generated when the torque limiting value is set to less than 250%.
To Next Page
Loading...
Need help?
General
