J. T. Eaton Liquid-Cooled Drives LCX9000 - Manual (Page 112)

LCX9000 Liquid-Cooled Drives User Manual
A-2 For more information visit: www.EatonElectrical.com MN04005001E
January 2007
Table A-1: Fault Codes (Continued)
ᕃ Programmable.
ᕄ “A” faults only
Fault
Code Fault
Possible Cause Solution
9 Undervoltage ᕃ DC-link voltage is under the voltage
limits defined in Table 1-4.
• most probable cause: too low a
supply voltage
• drive internal fault
In case of temporary supply voltage
break, reset the fault and restart the
drive. Check the supply voltage. If it
is adequate, an internal failure has
occurred.
Contact your Cutler-Hammer
distributor.
10 Input line
supervision
ᕃ
Input line phase is missing. Check supply voltage and cable.
11 Output phase
supervision
ᕃ
Current measurement has detected
that there is no current in one motor
phase. Check motor cable and motor.
12 Brake chopper
supervision
• no brake resistor installed
• brake resistor is broken
• brake chopper failure
Check brake resistor.
If the resistor is ok, the chopper is
faulty. Contact your Cutler-Hammer
distributor.
13 Drive
undertemperature Heatsink temperature is under 14°F
(-10°C)
14 Drive
overtemperature
• Heatsink temperature is over
158°F (70°C). Overtemperature
warning is issued when the
heatsink temperature exceeds
149°F (65°C).
• Circuit board temperature is over
185°F (85°C). Overtemperature
warning is issued when the board
temperature exceeds 158°F (70°C).
Check that values for I
th
(Page 1-6)
are not exceeded.
Check the correct coolant flow and
temperature. Also check the
circulation for possible leaks.
Check the ambient temperature.
Make sure that the switching
frequency is not too high in relation
to ambient temperature and motor
load.
Circulation of air in the drive is
blocked. The cooling fans are
defective.
15 Motor stalled ᕃ Motor stall protection has tripped. Check motor.
16 Motor
overtemperature
ᕃ
• motor overheating has been
detected by drive motor
temperature model
• motor is overloaded
Decrease the motor load.
If no motor overload exists, check the
temperature model parameters.
17 Motor underload ᕃ Motor underload protection has
tripped.
22 EEPROM
checksum fault
ᕄ
Parameter save fault
• faulty operation
• component failure
24 Counter fault Values displayed on counters are
incorrect.
25 Microprocessor
watchdog fault • faulty operation
• component failure Reset the fault and restart.
Should the fault re-occur, contact
your Cutler-Hammer distributor.
26 Start-up
prevented Start-up of the drive has been
prevented. Cancel prevention of start-up.