9-1
9. Troubleshooting
9.
Troubleshooting
Symptom
Cause
Countermeasure
Related Page
Pulses cannot be
counted in higher-level
device
Power is not supplied
to the encoder head
Supply 5V DC power to the
linear encoder. Make sure
that there is no voltage drop
when the cable length is
extended.
4-2-2
Encoder Specifications
Interface is not
matched
Confirm that the interface to
receive signals is a line
receiver circuit complied
with EIA-422.
4-2-3
Output Specifications
Wrong Wiring
Check the pin assignments
and lay them out correctly.
7-1 Wiring
Cable connector is
disconnected
Check if the connection at
connectors are performed
properly.
7-1 Wiring
Cable line breakage
Check if there is any line
breakage on a cable.
Encoder head
malfunction
Consult with our IOT
Innovation Divisions if
replacement is necessary.
Scale malfunction
Consult with our IOT
Innovation Divisions if
replacement is necessary.
Pulse count
significantly differ to
travel distance
Scale Error
Check the entire stroke on
the scale surfaces with a
magnet viewer sold in
general.
If there is an error in
arrangement of magnets, it
is necessary to have a
replacement.
Noise
Check if there is any
influence of noise caused by
such as peripheral
servomotor, and take a
counteraction against noise
such as electrical isolation
and grounding if there is an
influence.
Gap error between
scale and encoder
head
Check if there is any
loosened or dropped screw
on the encoder head or
encoder holder.
Cable Error
Check if there is any line
breakage on a cable.
Contact error on
cable connector
Check if joint on connectors
are connected properly.
