FEC DSP1500 (SAN3) - Manual (Page 141)

enFORCE DSP1500 SAN Unit Operation Manual
PAGE 8－7 (Rev. 4)
Chapter 8: Troubleshooting
• Code A3_4 - CCW SENSOR POSITION ABNORMAL
The resolver count is out of the 1000 ~ 3000 range after performing a Home Position Search.
(See Section 7.2.3.2 for an explanation of Home Position Search)
Note: The press unit will still be able to operate with this abnormal but be warned that, if
using Distance Control press methods, the distance value may fluctuate.
CAUSE:
1. The motor was changed and not “tuned” or tuned incorrectly.
2. The RETURNED switch (CCW) has moved.
3. An offset value was entered in the “Resolver Position” System Parameter [00-09] that caused
the resolver count to become out of range.
4. If using a DPS or DPM series tool, the belt tension may need adjustment.
RECOVERY:
1. Perform a “tuning” procedure on the motor. (See Section 7.2.3.3)
2. Verify that the RETURNED switch (CCW) mounting screws are tight. If loose, tighten and
perform a “tuning” procedure on the motor.
3. Enter a value of zero into the “Resolver Position” System Parameter [00-09] and download to
the controller. Perform a Home Position Search and verify that the resolver count is between
1000 ~ 3000. If it is slightly out of range, an offset value may be entered in the “Resolver
Position” System Parameter [00-09]. (See Section 6.4.5.1 for an explanation of the “Resolver
Position” System Parameter [00-09])
4. Verify that the motor fixing bolts on the DPS or DPM tool are tight and the belt is at the
correct tension. (See Section 7.1.1.3)
• Code A3_5 - ORIGIN SEARCH TIMEOUT
The Home Position Search operation did not finish in the time specified in System Parameter
00-30. (See Section 7.2.3.2 for an explanation of Home Position Search)
RECOVERY:
1. Increase the Home Position Search Time Out specified in System Parameter 00-30.
(See Page 6-21)
2. Increase the Home Position Search Speed specified in System Parameter 00-31.
3. Verify that the Home Position Sensor setting specified in System Parameter 00-36 is set
correctly.