Baldor 22H series Installation & Operating Manual page 95

Section 1
General Information
Table 5-4 Power Output Section Troubleshooting
INDICATION
New Base ID Software parameters are not
initialized on newly installed
control board.
No EXB Installed Incorrect programmed parameter.
Need expansion board.
Over Current FLT Current Limit parameter set lower
than drive rating.
ACCEL/DECEL time too short.
Encoder coupling slipping, broken
or misaligned.
Encoder bearing failure.
Excessive noise on encoder lines.
Electrical noise from external DC
coils.
Electrical noise from external AC
coils.
Excessive load.
Overload - 3 Sec Peak output current exceeded 3
FLT second rating.
Encoder coupling slipping, broken
or misaligned.
Encoder bearing failure.
Overload - 1 Min Peak output current exceeded 1
FLT minute rating.
Encoder coupling slipping, broken
or misaligned.
Encoder bearing failure.
Over Speed Motor exceeded 110% of MAX
Speed parameter value.
5-12 Troubleshooting
POSSIBLE CAUSE
Continued on next page.
CORRECTIVE ACTION
Press "RESET" key on keypad to clear the fault condition. Reset
parameter values to factory settings. Access diagnostics and compare
power base ID number to list in Table 5-5 to ensure a match. Re-enter the
Parameter Block Values you recorded in the User Settings at the end of
this manual. Autotune the control.
Change the Level 1 Input block, Command Select parameter and the Level
2 Process Control block, Process Feedback and Setpoint Source
parameters to a value that does not require an expansion board.
Install the correct expansion board for selected operating mode.
Increase the Level 2 Output Limits block, PK Current Limit parameter.
Do not exceed drive rating.
Increase the Level 1 ACCEL/DECEL Rate block ACCEL/DEC parameters.
Correct or replace encoder to motor coupling.
Replace and align encoder.
Check the position counter in the Diagnostic Information for
jittering which will confirm an encoder problem.
Check encoder connections.
Separate encoder leads from power wiring.
Use Baldor encoder cable.
Cross encoder wires and power leads at 90 .
Electrically isolate encoder from motor.
Install optional Isolated Encoder Feedback expansion board.
Install reverse biased diodes across all external DC relay coils as shown in
the Opto Output circuit examples of this manual. See Electrical Noise
Considerations in Section 5 of this manual.
Install RC snubbers on all external AC coils. See Electrical Noise
Considerations in Section 5 of this manual.
Reduce the motor load.
Verify proper sizing of control and motor.
Check the Level 2 Output Limits block PK Current Limit parameter.
Change the Level 2 Protection block Overload parameter from Trip to
Foldback.
Check motor for overloading.
Increase Level 1 ACCEL/DECEL Rate block ACCEL/DEC parameters.
Reduce motor load.
Verify proper sizing of control and motor.
Correct or replace encoder to motor coupling.
Replace and align encoder.
Verify proper motor data has been entered.
Check the Level 2 Output Limits block PK Current Limit parameter.
Change the Level 2 Protection block Overload parameter from Trip to
Foldback.
Check motor for overloading.
Increase Level 1 ACCEL/DECEL Rate block ACCEL/DEC parameters.
Reduce motor load.
Verify proper sizing of control and motor.
Correct or replace encoder to motor coupling.
Replace and align encoder.
Check the Level 2 Output Limits block Max Output Speed.
Increase the Level 1 Vector Control block Speed PROP Gain.
Continued
MN722