Omron OMNUC W R88A-NCW152-DRT, Руководство пользователя

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9 Troubleshooting
9-44
9
9.4 Error Diagnosis Due To Operating Status
Refer to the tables below to identify the cause of a problem which causes no alarm display and
take the remedy described.
Turn OFF the servo system power supply before commencing the shaded procedures.
Table 9.3 Troubleshooting Table with No Alarm Display
Symptom Cause Inspection Remedy
Servomotor does not start.
Power not connected Check voltage between
power supply terminals. Correct the power circuit.
Loose connection Check terminals of connec-
tors (CN1, CN2, CN4, and
CN6). Tighten any loose parts.
Connectors (CN1, CN4, and CN6)
external wiring incorrect Check connectors (CN1,
CN4, and CN6) external
wiring. Refer to connection diagram
and correct wiring.
Servomotor or encoder wiring dis-
connected
−
Reconnect wiring.
Overloaded. Run under no load. Reduce load or replace with
larger capacity Servomotor.
Encoder type differs from parameter
setting. Check the type of encoder
being used. Set parameter Pn002.2 to the
encoder type being used.
POT and NOT inputs are turned OFF. Refer to 8.3 . Turn POT and NOT input sig-
nals ON.
Software limit reached Refer to 5.3.3. Operate the Servomotor within
software limits.
Servomotor does not run. Move commands have not been sent. Check using DeviceNet
communications or the
DeviceNet monitor. Send the move commands.
Servo ON Command has not been
sent. Send Servo ON Command.
Servomotor moves instanta-
neously, then stops.
Servomotor or encoder wiring incor-
rect.
−
Refer to chapter 4
Connec-
tors and correct wiring.
Servomotor speed unstable Wiring connection to Servomotor is
defective. Check connection of
phase-U, -V, and -W power
lines and encoder connec-
tors. Tighten any loose terminals or
connectors.
Servomotor vibrates at ap-
proximately 200 to 400 Hz.
Speed loop gain value is too high.
−
Reduce Speed Loop Gain
(Pn100) preset value.
High rotation speed over-
shoot on starting and stop-
ping
Speed loop gain value is too high.
−
Reduce Speed Loop Gain
(Pn100) preset value.
Increase Speed Loop Integra-
tion Constant (Pn101).
Speed loop gain value too low com-
pared to position loop gain value.
−
Increase Speed Loop Gain
(Pn100) preset value.
Reduce Speed Loop Integra-
tion Constant (Pn101).
Servomotor overheated Ambient temperature is too high. Measure Servomotor ambi-
ent temperature. Reduce ambient temperature to
40
°
C max.
Servomotor surface is dirty. Visual check Clean dust and oil from motor
surface.
Overloaded Run under no load. Reduce load or replace with
larger capacity Servomotor.