
-323-
9 Troubleshooting
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E740.3: Absolute encoder single-turn calculation error
Root Cause
Confirming Method
Solution
An internal fault occurs on the
encoder.
Check whether bit7 of H0B-28 is 1.
◆
Check whether the encoder
version (H00-04) is proper.
◆
Check whether encoder cables are
in proper condition.
◆
Replace the servo motor.
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E740.6: Encoder write error
Direct cause:
A write error occurs on the encoder.
Root Cause
Confirming Method
Solution
An error occurs during writing the
position offset after angle auto-
tuning.
-
Check whether the encoder cable
shield and the grounding cable are
connected properly.
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EB00.0: Position deviation too large
Direct cause:
The position deviation is larger than the value defined by 6065h in the position control mode.
Root Cause
Confirming Method
Solution
1. Power output (UVW) phase loss or
incorrect phase sequence occurs on
the servo drive.
Perform motor trial run without load
and check the cable connections.
Re-connect the cables according
to the correct wiring diagram or
replace the cables.
2. The servo drive UVW cables or the
encoder cables are disconnected.
Check the cable connections.
Re-connect the UVW cables. The
UVW phase sequence on the servo
drive side must be consistent with
that on the motor side. Replace
with new cables if necessary and
ensure the cables are connected
properly.
3. The motor rotor is locked due to
mechanical factors.
Check the RUN command and
motor speed (200B-01h) through
the software tool or the keypad:
RUN command in the position
control mode: 200B-0Eh
(Position reference counter)
RUN command in the speed control
mode: 200B-02h
(Speed reference)
RUN command in the torque control
mode: 200B-03h
(Internal torque reference)
Check whether the RUN command
in the corresponding mode is not 0
but the motor speed is 0.
Eliminate mechanical factors.
4. The servo drive gain is low.
Check the position loop gain and
speed loop gain of the servo drive.
1st gain: 2008-01h to 2008-03h
2nd gain: 2008-04h to 2008-06h
Adjust the gain manually or perform
gain auto-tuning.
Содержание SV660
Страница 178: ...177 6 Gain Tuning Figure 6 18 Example of the waveform...
Страница 359: ...358 10 Application Cases c Click OK d Click Yes...
Страница 360: ...359 10 Application Cases e Click OK f Click No...
Страница 362: ...361 10 Application Cases...
Страница 366: ...365 10 Application Cases 7 2 Controlling the servo operations through the PLC a Create a PLC program...
Страница 370: ...369 10 Application Cases b Add parameters to be monitored to monitor these parameters during PLC running...