Section 1
General Information
5-6 Troubleshooting
MN1230
Table 5-5 Troubleshooting
INDICATION
POSSIBLE CAUSE
CORRECTIVE ACTION
No Display
Lack of input voltage.
Check input power for proper voltage.
Loose connections.
Check input power termination.
Verify connection of operator keypad.
Adjust display contrast.
See Adjust Display Contrast in Sec. 5.
Auto Tune
Resolver Test failed
Resolver miswired.
Correct wiring problems.
Check resolver speed.
Check the number of motor poles.
Excessive noise on resolver lines.
Check resolver connections.
Separate resolver leads from power wiring.
Cross resolver wires and power leads at 90
°
angles.
Current Sense FLT
Open circuit between control board
and current sensor.
Check connections between control board and current sensor.
Defective current sensor.
Replace current sensor.
DC Bus High
Excessive DB power.
Increase the DECEL time.
Add optional DB resistor.
DB resistor wiring problem.
Check DB resistor wiring.
Input voltage too high.
Verify proper AC line voltage.
Use step down transformer if needed.
Use line reactor to minimize spikes.
DC Bus Low
Input voltage too low.
Disconnect DB resistor and repeat operation.
Verify proper AC line voltage.
Use step up transformer if needed.
Check power line disturbances (sags caused by start up of
other equipment).
Monitor power line fluctuations with date and time imprint
to isolate power problem.
Summary of Contents for 29M
Page 1: ...Series 29M Servo Control Installation Operating Manual 1 98 MN1230 AC SERVO DRIVE...
Page 5: ...Section 1 General Information iv Table of Contents MN1230...
Page 7: ...Section 1 General Information 1 2 Receiving Inspection MN1230...
Page 45: ...Section 1 General Information 3 34 Installation MN1230...
Page 94: ...Section 1 General Information Specifications and Product Data 7 7 MN1230 Dimensions...
Page 102: ...Appendix B Appendix B 1 MN1230...