Denso RC8 - Page 30

26
No.
Symptom
Possible cause
Items checked
Remedy
Motor failure
Try to use another electric
gripper.
If it properly worked, replace
electric gripper.
4
Since the fingers
made a bump at
stroke end while
returning to their
original positions, the
machine stops due to
occurrence of alarm.
Inconsistent settings
Check the actuator type and
gripper model displayed in
electric gripper screen.
Initialize the parameters with the
electric gripper screen.
Incorrect parameter
settings or failure
Check the parameters with
electric gripper screen.
Initialize parameters with the
electric gripper screen.
5
Misalignment of
original position
occurs.
Damaged ball screws
( FS/FT type)
Check the ball screws.
Replace the ball screw.
Connection failure of
pulley
( FS/FT type)
Check the fixing parts.
Tighten for loose fixing.
Some teeth of belt are
missing. ( FS/FT type)
Movement speed was
increased too much.
Check how much the belt is
bent.
Modify the parameters.
Adjust the belt.
Malfunction caused by
noise.
・
Check the ground terminal
on electric gripper control
board is utilized for ground.
See “Electric gripper
connection cable FG
connection”, “Power supply
connection”.
・Check for the connection
with cable connectors.
・Check if there are a
welding machine, electric
discharge machine, etc.
near the controller.
・Check if the relay which
turns on/off a huge motor
exists near electric gripper
control board.
・
Keep controller as far away
from noise source as possible.
・Consider installation of a noise
filter and insulated transformer.
・Attach a noise killer to relay
contact.
・Keep the motor and encoder
cable away from the power
cable.
6
Electric gripper
speed is too fast or
too slow.
Incorrect the parameter
setting values.
Check the actuator type and
gripper model displayed in
electric gripper display.
Initialize the parameters with
electric gripper display.
Change the speed
setting.
Check speed parameter
Modify parameters.
7
Impossible to move
to the electric gripper
screen
License registration has
not been done yet.
Confirm whether the license
registration has completed
Register the license. If the
license is not provided, please
contact to Denso Wave.
8
Impossible to
operate the electric
gripper screen
The electric gripper
control board does not
correspond to the
specified electric gripper
number.
Confirm whether the electric
gripper control board
corresponds to the specified
gripper number and whether
they connect properly.
Connect appropriate electric
gripper control board which
corresponds to the specified
gripper number.
The electric gripper is
not activated
Confirm whether the electric
gripper is activated
Activate the electric gripper of
the specified gripper number.
For the electric gripper activation
process, see “Operation guide”.
9
When execute the
electric gripper
command, the error
“Invalid index” is
issued
The electric gripper
control board does not
correspond to the
specified electric gripper
number.
Confirm whether the electric
gripper control board
corresponds to the specified
gripper number and whether
they connect properly.
Connect appropriate electric
gripper control board which
corresponds to the specified
gripper number.
The electric gripper of
the specified gripper
number is not activated
Confirm whether the electric
gripper of the specified
gripper number is activated
Activate the electric gripper of
the specified gripper number.
For the electric gripper activation
process, see “Operation guide”.
License registration has
not been done yet.
Confirm whether license
registration has completed
Register the license. If the
license is not provided, please
contact to Denso Wave.