
Rockwell Automation Publication 2198-UM002E-EN-P - February 2018
217
Troubleshoot the Kinetix 5700 Drive System
Chapter 7
FLT S32 – BUS CAPACITOR
MODULE FAILURE
Bus Capacitor Module Failure
The digital input assigned to capacitor
module OK is asserted LOW.
• Check the digital input wiring
• Check the digital input assignments
• Replace the capacitor module, if necessary
Inverters
DC-bus PS
FLT S33 – BUS UNDERVOLT FL
Bus Undervoltage
Factory Limit Fault
DC Bus voltage level is below the factory
set limit.
• Verify voltage level of the incoming AC
• Monitor AC power source for glitches or line droop
• Install UPS on AC input
Inverters
iTRAK PS
FLT S34 – BUS UNDERVOLT UL
Bus Undervoltage
User Limit Fault
DC Bus voltage level is below the user set
limit as given by Bus Undervoltage User
Limit.
For iTRAK power supply, this refers to the
output (IDC) power busses.
• Verify voltage level of the incoming AC
• Monitor AC power source for glitches or line droop
• Install UPS on AC input
• Increase Bus Undervoltage UL attribute value
• Verify iTRAK power supply cable wiring
Inverters
iTRAK PS
FLT S35 – BUS OVERVOLT FL
Bus Overvoltage
Factory Limit Fault
DC Bus voltage level is above the factory
set limit.
For iTRAK power supply, this refers to the
input or output iTRAK power busses.
• Change the deceleration or motion profile of some or all of the
drives connected to the DC bus
• Unplug the shunt connector and measure the resistance of the
shunt
• Add an external shunt resistor or an active brake module
• Replace DC-bus power supply if shunt resistor is open
• Verify iTRAK power supply cable wiring
Inverters
DC-bus PS
iTRAK PS
FLT S37 – BUS POWER LOSS
(2)
Bus Power Loss Fault
The DC-bus voltage level is below the bus
power loss threshold for more than 50
ms.
• Verify voltage level of the incoming AC
• Increase the Power Loss Threshold Attribute
• Monitor AC power source for glitches or line droop
• Install UPS on AC input
Inverters
FLT S38 – FUSE BLOWN
nn
Bus Power Fuse Blown Fault
The internal DC-bus power fuse is blown.
The nn sub-code is defined as follows:
00: Non user-replaceable fuse
• Return drive for repair if fault continues
• Verify output power wiring (iTRAK power supply)
Inverters
iTRAK PS
The internal DC-bus power fuse is blown.
The nn sub-code is defined as follows:
01: User replaceable fuse (iTRAK power
supply only)
• Verify output power wiring
• Replace fuse
FLT S40 – BUS POWER SHARING
FAULT
Bus Power Sharing Fault
A power supply or RPS sharing DC-bus
power with this module (power supply or
drive) has requested that this module
stop consuming power from the DC-bus
• Check the fault condition on the DC-bus power supply
• Install UPS on AC input
Inverters
DC-bus PS
FLT S41 – MTR AQB STATE FL
Feedback Signal Noise FL
The number of illegal state transitions of
the motor AQB encoder feedback signals
has exceeded a factory limit.
• Verify the motor feedback wiring is not open/shorted/missing
• Use shielded cables, route feedback away from potential noise
sources
• Check system grounds, replace motor/encoder
Inverters
FLT S43 – FDBK LOSS FL
(3)
Feedback Signal Loss FL
The detected voltage levels of the A/B
channel signals from the feedback device
are below the Feedback Signal Loss
factory limit.
The associated fault/alarm sub-code
indicates which of the supported
feedback channels is reporting this fault/
alarm.
• Verify the motor feedback wiring is not open/shorted/missing
• Use shielded cables, route feedback away from potential noise
sources
• Check system grounds, replace motor/encoder.
Inverters
FLT S44 – FDBK LOSS UL
Feedback Signal Loss UL
Inverters
FLT S45 – FDBK COMM FL
(4)
Motor Feedback Data Loss
Factory Limit Fault
The number of consecutive missed or
corrupted serial data packets, or invalid
position feedback values from the
intelligent feedback device has exceeded
a factory set limit.
• Check motor feedback cable and connector
• Check motor power cable and feedback wire shields are secured
correctly
• Check motor frame is grounded correctly
• Consult Possible Solutions for FLT S47
Inverters
Motor Feedback Data Loss
User Limit Fault
The number of consecutive missed or
corrupted serial data packets from the
intelligent feedback device has exceeded
a user set limit.
Inverters
Table 95 - FLT S
xx
Fault Codes (continued)
Exception Code on Display
Exception Text
Problem
Possible Solutions
Module