Fastech S-SERVOII Operating Manual page 55

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