8. TROUBLESHOOTING
8 - 78
Frequency of the pulse train
command is too high.
Check the pulse train
command
frequency is within the range
of specifications.
It is 500 kpulses/s or less for
the open-collector type. It is 4
Mpulses/s or less for the
differential line driver type.
Review the pulse train command
frequency. Select a filter
according to the pulse train
command frequency from
"Command input pulse train filter
selection" in [Pr. PA13].
A cable for command is too
long.
Check the ripple of the
command
frequency with oscilloscope.
Shorten the wiring length. Cable
length must be 10 m or shorter for
differential line driver output and 2
m or shorter for open-collector
output.
SON (Servo-on) turned off
during operation.
Check if SON (Servo-on) is off
during operation using status
display or setup software (MR
Configurator2
TM
).
Review the wiring and sequence
not to turn off SON (Servo-on)
during operation.
LSP ( Forward rotation
stroke end) or LSN
( Reverse rotation stroke
end) is turned off. ([AL.99]
occurred.)
Check that the operating
range does not exceed the
stroke end.
The command position does
not match the current
position.
Operating range or stroke end
positionPlease Confirm.
CR (Clear) or RES (Reset)
turned on during operation.
Check if CR (Clear) or RES
(Reset) is on during operation
using status display or setup
software (MR
Configurator2
TM
).
Review the wiring and sequence
not to turn on CR (Clear) or RES
(Reset) during operation.
The setting of point tables and
start timing is incorrect.
Check if a time period from
after switching timing of point
table setting value and point
table No.until a start timing is
3 ms or more.
Review the point table setting.
Review the start timing.
An input signal to the MR-D01
extension IO unit is incorrect.
Check the selection of the
point table No. selection 1 to
point table No. selection 8 and
check the wiring.
Check the input signal switch to
the MR-D01 extension IO unit and
check the wiring.
The program, start timing, etc.
are incorrect.
Check if a time period from
after switching timing of BCD
input program and point table
No. until a start timing is 3 ms
or more, etc.
Review the controller programs.
The setting of MR-DS60 digital
switch is incorrect.
Check the [Pr. Po10] setting.
Review the [Pr. Po10] setting.
The wiring between MR-DS60
digital switch and MR-D01
extension IO unit is incorrect.
Check the wiring between
MRDS60 digital switch and
MR-D01 extension IO unit.
Review the wiring between MRDS60
digital switch and MR-D01
extension IO unit.
Wiring of the MR-HDP01
manual pulse generator or
setting of "manual pulse
generator multiplication" ([Pr.
PT03], TP0 (manual pulse
generator multiplication 1),
TP1 (manual pulse generator
multiplication 2)) is incorrect.
The input value from the
MRHDP01 manual pulse
generator and the command
position do not match.
Review the wiring.
Set the multiplication setting correctly.
A mechanical slip occurred. Or
the backlash of the machine
part is large.
Check if there is a slip or
backlash on the machine part.
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