202 Rockwell Automation Publication 2094-UM002G-EN-P - August 2016
Chapter 8 Troubleshoot the Kinetix 6200 and Kinetix 6500 Drive System
FLT S18…CONV OVERTEMP FL Converter Overtemperature Converter thermal switch tripped.
Excessive heat exists in the
power circuitry.
• Reduce acceleration rates.
• Reduce duty cycle (ON/OFF) of commanded
motion.
• Increase time permitted for motion.
• Use larger IAM power module.
• Check for clogged vents or defective fan.
• Make sure cooling is not restricted by
insufficient space around the unit.
FLT S20…CONV OVERLOAD FL Converter Thermal Protection
The thermal model for the converter
indicates that the temperature has
exceeded its rating.
Excessive current is being
drawn by the power circuitry.
• Reduce acceleration rates.
• Reduce duty cycle (ON/OFF) of commanded
motion.
• Increase time permitted for motion.
• Use larger IAM power module.
FLT S21…CONV OVERLOAD UL
(Kinetix 6500 drives only)
Converter Thermal Protection
The thermal model for the converter
indicates that the temperature has
exceeded a user-programmable limit.
FLT S22…AC POWER LOSS AC Power Loss
All three AC input phases are detected
as absent when an axis is enabled.
Axis was enabled when main
(three-phase) power was
removed.
Disable axis before removing power.
FLT S23…AC PHASE LOSS nn AC Phase Loss
Some, but not all AC input phases are
detected as absent. The nn sub-code is
defined as follows:
01: L1 is missing.
02: L2 is missing.
03: L3 is missing.
Faulty AC line control
equipment.
Check input AC voltage on all phases.
FLT S25…PRECHARGE FAILURE Pre-charge Failure
The converter pre-charge circuit
detected that the DC bus did not reach
an appropriate voltage level after
charging for a period of time.
Low AC input voltage. Check input AC voltage on all phases
Internal malfunction. Call your sales representative.
FLT S29…SHUNT OVERLOAD FL Shunt Thermal Protection
The thermal model for the shunt circuitry indicates that the temperature
has exceeded its rating.
• Use a properly sized shunt or modify duty
cycle of the application.
•System uses internal shunt and requires
external shunt for additional capacity.
FLT S30…SHUNT OVERLOAD UL
(Kinetix 6500 drives only)
Shunt Thermal Protection
The thermal model for the shunt circuitry indicates that the temperature
has exceeded a user-programmable limit.
FLT S31…SHUNT MODULE Shunt Module Fault
The shunt module in a multi-axis
system has a fault.
Over-temperature fault
indicator on Bulletin 2094
shunt module is steady red.
Refer to Temperature Fault Status Indicator on
page 212
.
Shunt-fault indicator on
Bulletin 2094 shunt module
is steady red.
Refer to Shunt Fault Status Indicator on
page 212
.
Bulletin 2094 shunt module
is missing from power rail.
Install missing module on power rail.
Fill empty slot with slot-filler module.
FLT S33…BUS UNDERVOLT FL Bus Undervoltage
With three-phase power present, the
DC bus voltage is below limits.
DC bus voltage fell below the
undervoltage limit while an axis on the
follower power rail was enabled.
DC bus voltage for 460V
system is below 275V.
• Verify voltage level of the incoming AC
power.
• Check AC power source for glitches or line
drop.
• Install an uninterruptible power supply
(UPS) on your AC input.
• Disable follower axis before removing
power.
FLT S34…BUS UNDERVOLT UL
(Kinetix 6500 drives only)
Bus Undervoltage
The DC bus voltage is measured below a
user limit when the DC bus was
expected to be charged.
FLT S35…BUS OVERVOLT FL Bus Overvoltage
The DC bus voltage is measured above a
factory limit.
Excessive regeneration of
power.
Change the deceleration or motion profile.
When the motor is driven by
an external mechanical
power source, it may
regenerate too much peak
energy through the drive
power supply. The system
faults to save itself from an
overload.
Use a larger system (motor and drive).
DC bus voltage for 460V
system is over 820V.
Install shunt module.
FLT S38…FUSE BLOWN Blown Fuse (Bus Loss)
A blown fuse was detected in the power
structure.
Blown fuse.
Call your Rockwell Automation sales
representative to return module for repair.
Table 87 - FLT Sxx Fault Codes (continued)
Four-character Display Message Logix Designer Fault Message Problem or Symptom Potential Cause Possible Resolution
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