IAI Rcon

2.2 Failure Diagnostics
C2-3
ME0384-4A
Maintenance Section
Chapter 2 Troubleshooting
Situation
Possible cause
Confirmation/countermeasure
Unable to operate even
though teaching tool is
connected and gateway
unit motor and control
power are supplied.
(Stop switch is in
release status on the
teaching tool)
1) Stop due to the influence of circuits
throughout the facility.
2) Operation mode is AUTO, or is
MANU but in monitor mode.
3) Servo OFF status.
1) Supply 24 VDC to STOP- terminal of the
system I/O connector.
Warning
When using the process in 1), return to
the original status immediately after
adjustment. If operated as is, the
disabled stop could lead to a serious
accident.
2) Turn AUTO/MANU switch on the front
panel of the gateway unit to MANU, and
select teaching mode with the teaching
tool.
3) Turn the servo ON with the teaching tool.
Low positioning and velocity accuracy (incorrect operation)
Situation
Possible cause
Confirmation/countermeasure
Motion is completed in
the middle of home
return operation.
The standard IAI home return motion
specification is a positioning stop at
the home position after pushing
against the mechanical end and
reversing. When the load is
excessive or the unit encounters an
obstacle, it may determine that the
mechanical end has been reached,
without actually having done so.
1) Weight exceeding the rated load is
loaded.
2) The unit is striking an obstacle
while traveling.
3)
The guide has torsional stress due to
the securing method of the actuator
or uneven tightening of bolts.
4) The sliding resistance of the
actuator itself is excessive.
1) Reduce the load.
2) Remove the interfering object.
3) Try loosening the fixing bolt and check if
the slider part moves smoothly.
If it moves smoothly, check for distortion
of the mounting surface, etc., and
remount the unit according to the
mounting method shown in the actuator
instruction manual.
4) Contact IAI.
There is a shock when
starting or stopping.
Acceleration/deceleration setting is
too high.
Lower the acceleration/deceleration
setting.
Overshooting occurs
during decelerating stop.
Load inertia is excessive.
Deceleration setting is too high.
Lower the deceleration setting.
Positioning accuracy is
insufficient.
[Refer to Startup Section Chapter 6, 6.1 Parameter/Servo gain adjustment (page
B6-61)]
Uneven speed when traveling.
Unable to smoothly
accelerate/decelerate
(speed response is
insufficient).
Positioning completes but
positioning complete signal
PEND is not output.
Positioning start signal CSTR has not
been turned OFF.
CSTR signal must be turned OFF before
positioning complete, by turning OFF
PEND signal, etc., after traveling starts.