Omron OMNUC W Series User Manual page 361

Troubleshooting
Computer Monitor Software
S Install and use the OMNUC W-series Servo Driver Computer Monitor Software (for Windows 95).
The following three items are required: An IBM PC/AT or compatible with Windows 95, the Com-
puter Monitor Software, and Connecting Cable (R88A-CCW002Pj).
S Refer to the Computer Monitor Software for operation details.
5-1-2 Precautions
When checking and verifying I/O after trouble has occurred, the Servo Driver may sud-
denly start to operate or suddenly stop, so take precautions. Also, do not attempt opera-
tions not specified in this manual.
H Precautions
• Disconnect any cables before checking if they have burned out. Even if you have checked the conduc-
tion of the wiring, there is a risk of conduction due to the return circuit.
• If the encoder signal is lost, the Servomotor may run away, or an error may be generated. Make sure
the Servomotor is disconnected from the mechanical system before checking the encoder signal.
• When measuring the encoder output, measure using the ground (CN1-1 pin) as standard. If measur-
ing using an oscilloscope, measure using the differential between CH1 and CH2 to reduce interfer-
ence from noise.
• When performing tests, first check that there are no personnel inside the machine facilities, and that
the facilities will not be damaged even if the Servomotor runs away. Also, check that even if the Servo-
motor runs away, you can immediately stop the machine using an emergency stop before performing
the tests.
5-1-3 Replacing the Servomotor and Servo Driver
Perform the following procedure to replace the Servomotor or Servo Driver.
H Replacing the Servomotor
1. Replace the Servomotor.
2. Perform origin teaching (if using position control).
S When replacing the Servomotor, the Servomotor's specific origin position (Z-phase) may slip, so
be sure to perform origin teaching.
S Refer to the manual for the position controller you use for how to perform origin teaching.
3. Set up the absolute encoder (ABS).
S If using a Servomotor with an absolute encoder, when replacing the Servomotor, the absolute data
in the absolute encoder will be cleared, so you need to set up the data again. Also, the rotation limit
data will be different from before you replaced the Servomotor, so initialize the Motion Control Unit
settings.
Note Refer to 4-2-2 Absolute Encoder Setup and Battery Changes for details.
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Chapter 5
5-3