Omron R88D-GT series User Manual page 465

Symptom Probable cause
The torque command is
disabled.
The Servomotor
does not rotate
even if The CW Input and CCW
commands are Input are ON at the same
input from the time.
Controller.
Servo Drive is faulty.
The Servomotor The Servomotor Power
operates Cable is wired incorrectly.
momentarily, but
The Encoder Cable is wired
then it does not
incorrectly.
operate after that.
The command pulse input
The Servomotor
is incorrect.
rotates without a
command.
Servo Drive is faulty.
The Servomotor
rotates in the The CW input and CCW
opposite direction input connections are
from the reversed.
command.
Items to check
Check if the torque command input
procedure is correct.
Check the command pulse's wiring.
---
Check the wiring of the Servomotor
Power Cable's phases U, V, and W.
Check the Encoder Cable's wiring.
Check the command pulse type.
Check the command pulse's
voltage.
---
Check the Controller's command
pulse type and the Servo Drive's
command pulse type.
8-3 Troubleshooting
Countermeasures
Correctly set the torque
command.
• Input the pulse signal ei-
ther to the CW Input or
CCW Input to the pulse
signal.
• Always turn OFF the ter-
minal that is not being
input to.
Replace the Servo Drive.
Wire correctly.
Wire correctly.
Set the correct command
pulse input.
Connect a resistor that
matches the voltage.
Replace the Servo Drive.
Connect the CW pulse signal
to the CW Input and the
CCW pulse signal to the
CCW Input.
8-16
8