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Flash
Times
Alarm
Contents
Conditions The Cause of Error Checking Point Corrective Measure
4 Over Load
The motor is
continuously
operated more
than 5second
under a load
exceeding
the max
torque
If send the command to move
into the distance beyond the
end of the structure
Checking the command of dis-
tance from host controller(PLC).
① Fix the command of distance
to reasonable value.
It does not operate normal-
ly, because its deformable
structure
Checking the assemble status
of the equipment.
(Unscrews, debris, and
deformation structures)
① Fix the assemble status of
the equipment.
It reaches end of
structure because S/W Limit
value is not set
Checking the S/W Limit value.
① Fix the S/W Limit value to
suit to the equipment.
It reached end of
structure because
sensor of H/W Limit is not
operated
Checking whether H/W Limit
sensor working correctly.
① Replace the H/W Limit ensor.
The load exceeding the Max
torque of motor
Checking whether motor has
enough torque by comparing to
load of instrument.
① Lower the speed of opera-
tion. (Step motor generate high-
er torque when speed is low)
② When ① is impossible,
replace the motor to higher
torque than load.
Motor does not operate
because motor is damaged
Checking whether motor is
damaged because motor
bearing damage. -> Pow-
er off the motor, and listening
to sound while rotate shaft of
motor by hand.
① If find any damage, replace
the motor.
The drive may have problem
① If Alarm keep blinking after
tried all of above, replace the
drive.
5
Over
Temperature
Inside
temperature of
drive exceeds
65℃
If the ambient temperature is
too high or the heating ele-
ment is near the drive
Checking the ambient tempera-
ture and make sure no heating
element near the drive.
① Lower the room ambient
temperature to under 25℃, and
do heat dissipation by fan when
the temperature of the case is
over 50℃
② Remove the heating element
from the drive.
Distance between drive is
below 50mm, so heat dissi-
pation is difficult
Make sure the distance between
drive is more than 50mm.
① Keeping the distance more
than 50mm between drive.
② If ① is impossible, do heat
dissipation by FAN.
The drive may have problem
③ If Alarm keep blinking after
tried all of above, replace the
drive.
6
Over Re-
generative
Voltage
Back-EMF of
motor
exceeds 40V
The acceleration and decel-
eration value is too small
Checking the Acceleration and
Deceleration conditions. (Differ-
ence depending on load and
speed)
① Change the condition of
Acceleration and Deceleration.
② Lower the operation speed of
motor relatively.
The drive may have problem
① If Alarm keep blinking after
tried all of above, replace the
drive.
7
Motor
Connect
Error
An error with
the connec-
tion between
the drive and
the motor
The motor may have problem
Checking the disconnection of
motor phase.
(A and/A, B and/B)
① Replace the motor.
If the motor cable between
motor and drive is damaged
Checking the connection of the
motor cable.
① Fix the error after check
connection status of motor
cable.
② Replace the extension cable
between motor and drive, if
there is problem.
The drive may have problem
① If Alarm keep blinking after
tried all of above, replace the
drive.
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