Omron R88D-KN20F-ECT-R User Manual

12-26
12-4 Troubleshooting
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
12
Troubleshooting and Maintenance
The servo locks but the
Servomotor does not
rotate.
The host controller does not
give a command.
For a position command,
check to see if the speed and
position are set to 0.
Enter position and speed
data. Start the
Servomotor.
It is hard to determine if the
Servomotor is rotating
Check to see it the speed
command given by the host
controller is too small.
Check the speed
command from the host
controller.
The holding brake is
operating.
Check the brake interlock
output (BKIR) signal and the
+24 VDC power supply.
Check to see if the
holding brake on a
Servomotor with brake is
released when the servo
is locked.
The torque limits set in the
Positive torque limit value
(60E0 hex) and the Negative
torque limit value (60E1 hex)
are too small.
Check to see if the torque
limits in objects 60E0 hex and
60E1 hex are set to a value
close to 0.
Set the maximum torque
to be used for each of
these objects.
The Servo Drive has broken
down.
− Replace the Servo Drive.
The Forward or Reverse
Drive Prohibition Input (POT
or NOT) is OFF.
Check the ON/OFF state of
the POT and NOT signals
from the CX-Drive.
• Turn ON the POT and
NOT signals.
• Disable them in the
settings when the POT
and NOT signals are
not used.
The control mode does not
conform to the command.
Check the set value of the
Control Mode Selection (3001
hex).
Set the control mode
according to the
command.
The Servomotor power
cable is wired incorrectly.
Check the wiring. Wire correctly.
The encoder cable is wired
incorrectly.
Power is not supplied. Check the power supply and
the 7-segment display.
Turn ON the power.
Check the voltage between
the power terminals.
Wire the power-ON
circuit correctly.
The Servo Drive has broken
down.
− Replace the Servo Drive.
The Servomotor operates
momentarily, but then it
does not operate after
that.
The position commands
given are too little.
Check the position data and
the electronic gear ratio at the
host controller.
Set the correct data.
The Servomotor power
cable is wired incorrectly.
Check the wiring of the
Servomotor power cable's
phases U, V, and W.
Wire correctly.
The encoder cable is wired
incorrectly.
Check the encoder cable's
wiring.
Wire correctly.
The Servomotor rotates
without a command.
There are inputs of small
values in speed control
mode.
Check if there is an input in
speed control mode.
Set the speed command
to 0. Alternatively,
change the mode to
position control mode.
The Servo Drive has broken
down.
− Replace the Servo Drive.
Symptom Probable cause Items to check Measures

Omron R88D-KN20F-ECT-R Specifications

General

Brand	Omron
Model	R88D-KN20F-ECT-R
Category	Servo Drives
Language	English