Baldor 22H series Installation & Operating Manual page 90

Section 1
General Information
INDICATION
Current Sense FLT Open circuit between control board
and current sensor or defective
current sensor.
DC Bus High Incorrect setting of converter bridge
parameter.
Decel rate too fast.
DC Bus Low Input voltage too low.
GND FLT Improper wiring.
High INIT CUR Incorrect phasing between input
power, filter assembly and line
reactors.
ID:No Feedback Control board is installed on wrong
power base.
INT Over-Temp Ambient temperature too high.
Drive overloaded.
Cooling fans or air path is clogged.
Invalid Base ID Control does not recognize
converter power base.
Logic Supply FLT Power supply malfunctioned.
Lost AB Phase Wire disconnected or phase lost.
Lost BC Phase Wire disconnected or phase lost.
Lost User Data Battery backed memory failure.
Low INIT Bus V Improper AC line voltage.
Memory Error EEPROM memory fault occurred.
P Reset Power was cycled before Bus
voltage reached 0VDC.
New Base ID Software parameters are not
initialized on newly installed
control board.
MN722
Table 5-3 Converter Section Troubleshooting
POSSIBLE CAUSE
Continued on next page.
CORRECTIVE ACTION
Check control wires between control board and current feedback sensor.
Check Bus Capacitance value of converter section parameters.
Increase Decel time parameter setting.
Monitor power line fluctuations with date and time imprint
to isolate power problem.
Check power line disturbances (sags caused by start up of
other equipment).
Use step up isolation transformer if needed.
Disconnect wiring between control and motor. Retry test.
If GND FLT is cleared, reconnect motor leads and retry the test.
Rewire as necessary.
Repair motor.
If GND FLT remains, contact Baldor.
Check connections for proper phasing as detailed in Section 3 of this
manual.
Change power base to one that has current feedback sensors.
Relocate control to a cooler area. Add cooling fans or air condition the
cabinet.
Verify proper sizing of control and motor. Correct loading of motor.
Clean fans and air path.
Ensure fans are operating.
Press "RESET" key on keypad. If fault remains, call Baldor.
Replace logic power supply.
Check for input power on all 3 phases.
Check wiring and correct errors in all output wiring and wiring between
individual components on EK type controls. Press "RESET" key on
keypad. If fault remains, call Baldor.
Check for input power on all 3 phases.
Check wiring and correct errors in all output wiring and wiring between
individual components on EK type controls. Press "RESET" key on
keypad. If fault remains, call Baldor.
Parameter data was erased. Disconnect power to control and
apply power (cycle power). Enter all parameters.
Cycle power. If problem persists, contact Baldor.
Check input AC voltage level.
Press "RESET" key on keypad. If fault remains, call Baldor.
Press "RESET" key on keypad.
Disconnect power and allow at least 5 minutes for
Bus capacitors to discharge before applying power.
If fault remains, call Baldor.
Press "RESET" key on keypad to clear the fault condition. Cycle power
(turn power OFF then ON). Refer to Section 4 and initialize new software.
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. If fault remains, call Baldor.
Troubleshooting 5-7