IAI EC-R6, Instruction Manual

Page: 272 / 348

7.4 Troubleshooting by alarm groups
7-11
7. T
roubleshooting
Alarm group A: Overload alarm
Moving parts of ELECYLINDER stopped abnormally while moving to the target position.
No. Cause Countermeasure
1 Operation may not be possible due to contact with
or snagging on external obstacles.
Remove any external obstacles or other external loads.
2 The ELECYLINDER may be being used under conditions
exceeding the specifications described in the catalog.
Check the specification values such as payload,
acceleration/deceleration and speed, and adjust them
appropriately.
3 Causes may include foreign matter, brake failure or motor
failure.
Visually check for the depletion of grease on the ball
screw/guide inside the ELECYLINDER, intrusion of foreign
matter, etc.
If this is the case, clean the inside of the ELECYLINDER
and replenish the grease.
Remove the motor and check the sliding movement of the
ELECYLINDER body.
If there is no abnormality in the sliding motion, there is a
possibility of motor or brake failure.
Replacement of the motor is recommended.
4 The base may have been distorted when mounting the
ELECYLINDER, increasing the sliding resistance of the
guide.
The ELECYLINDER mounting surface should be a
machined surface or a plane with similar accuracy, with
flatness within 0.05mm/m.
Refer to the recommended tightening torque of the bolts for
base fixing in "2.3/2.4 Installation method".
5 The peak power capacity of the 24V power supply is less
than 4.2A.
Use a power supply with peak current of 4.2 A or higher (per
axis).
6 If the diameter of the power wire is less than AWG18 (thin),
the peak current may not flow due to increased resistance
value or contact failure at the connection terminal.
Make sure that the wiring for power supply use is AWG18
and that there is no looseness, contact failure,
disconnection or the like at the connection
terminal/connector etc.
7 The deceleration distance was insufficient and the
calculation result of the arrival position exceeded the
operation range of the ELECYLINDER due to the "next
movement command" being issued too soon during
operation with "Smooth accel/decel setting" enabled.
Adjust the timing of the "next movement command" so that
the command will be given after the first movement is
completed.
8 24V power was turned ON while the moving parts of the
ELECYLINDER were immobilized or pressed against the
mechanical stopper.
Resolve the state of immobilization.
If the unit is pressed against the mechanical stopper, move
it at least 5mm away, then turn on the power again.