Omron R88M-W60010T User Manual page 369

Troubleshooting
5-3-3 Troubleshooting by Means of Operating Status
Symptom
The Servomotor The control power supply
does not start. is not ON.
The main circuit power
supply is not ON.
The I/O (CN1) wiring is
faulty or disconnected.
The Servomotor or
encoder wiring is
detached.
There is an overload.
Speed and position com-
mands are not being input.
The input signal selections
(Pn50A to Pn50D) are set
incorrectly.
The type of encoder being
used is different from the
parameter setting.
The Servo-ON (SV-ON)
command is not being
sent.
The sensor ON
(SENS_ON) command is
not being sent.
The forward drive prohibit
(POT) and reverse drive
prohibit (NOT) input sig-
nals are remaining OFF.
Servo Driver is defective.
The Servomotor Servomotor wiring is faulty. • Check the Servomotor wir-
operates momen-
tarily but then
Encoder wiring is faulty.
stops.
Servomotor rota- Wiring connections to the
tion is unstable. Servomotor are faulty.
Servomotor Servo Driver is defective.
rotates without any
commands.
Probable cause
• Check the voltage between
• Check the voltage between
• Check the condition and
• Checking the wiring.
• Operate without an over-
• Check the input pins.
• Check the settings for the
• Is it an incremental or an
• Check the host device com-
• Check the host device com-
• Check the POT and NOT
• The Servo Driver board is
• Check the encoder wiring.
• Connections are unstable
• Servo Driver board is
Items to check
the control power supply
terminals.
the main circuit power sup-
ply terminals.
wiring of the CN1 connec-
tor.
load.
input signal selections
(Pn50A to Pn50D).
absolute encoder?
mands.
mands.
input signals.
defective.
ing.
at power line (phase U, V,
W) or encoder connectors.
defective.
Chapter 5
Countermeasures
• Correct the control power
supply ON circuit.
• Correct the main circuit
power supply ON circuit.
• Correct the CN1 wiring.
• Connect the wiring.
• Either lighten the load or
change to a Servomotor
with greater capacity.
• Correct the speed and
position inputs.
• Correct Check the settings
for the input signal selec-
tions (Pn50A to Pn50D).
• Match the setting in
Pn002.2 to the type of
encoder that is being used.
• Specify the Servo-ON (SV-
ON) command.
• Send commands to the
Servo Driver in the correct
sequence.
• Turn ON the POT and NOT
input signals.
• Replace the Servo Driver.
• Correct the Servomotor
wiring.
• Correct the encoder wiring.
• Tighten any looseness at
the processing terminals
and connectors.
• Replace the Servo Driver.
5-37