Rockwell Automation Allen-Bradley Kinetix 5700 - Logix 5000 Controller and Drive Module Behavior

264 Rockwell Automation Publication 2198-UM002L-EN-P - October 2021
Chapter 7 Troubleshoot the Kinetix 5700 Drive System
Logix 5000 Controller and
Drive Module Behavior
By using the Logix Designer application, you can configure how the
Kinetix 5700 system responds when a module fault/exception occurs.
The DC-bus power supplies and servo drives support fault actions for Ignore,
Alarm, Minor Fault, and Major Fault as defined in Table 136
. The drives also
support five configurable stopping actions as defined in Table 147
.
Input overcurrent or ground current fault on
non-Kinetix 5700 drives connected to the
regenerative bus supply as soon as DC-bus
regulation is enabled.
Single-axis inverters (catalog numbers 2198-S086-ERSx, 2198-
S130-ERSx, 2198-S160-ERSx) firmware 10.3 or later is required.
Update the single-axis inverter firmware (catalog numbers 2198-S086-ERSx,
2198-S130-ERSx, 2198-S160-ERSx).
Motor insulation breakdown. Replace the motor.
DC bus voltage remains low (<50V) after the
AC contactor closes and AC is present at the
input to the regenerative bus supply.
DC-bus short circuit. Find and resolve the DC-bus short circuit.
Inverter internal short circuit.
• Test regenerative bus supply with all inverters disconnected
• Replace the shorted inverter
Inverter ground jumpers installed. Remove inverter ground jumpers.
Actual DC bus voltage is not equal to the DC
voltage set point in the Logix Designer
application.
DC voltage set point too high. Set the DC-bus voltage set point to a value <747V or use automatic mode.
DC voltage set point too low.
Set the DC-bus voltage to a value > (input AC voltage rms • 1.414 • 1.05) or use
automatic mode.
Startup draws excessive current from the AC
input on DC-bus voltage regulation enable.
External bus capacitance entered incorrectly in the Logix
Designer application.
Enter the sum of all bus capacitance external to the regenerative bus supply
into the Logix Designer application. See Calculate System and External-bus
Capacitance on page 376 to calculate external bus capacitance.
Voltage rate limit set too high in the Logix Designer application. Reduce the bus voltage rate limit in the Logix Designer application.
Current oscillations at no load.
Loop Response Set the loop response to medium or low.
Filter Bandwidth Increase the filter bandwidth (if lower than 4x the voltage regulator bandwidth).
Notch Frequency.
Increase the notch frequency bandwidth (if lower than 4x the voltage regulator
bandwidth).
Source kVA.
Set the source kVA to the actual kVA rating of the AC input transformer or input
reactor.
AC current is limited to less than the peak
rating of the regenerative bus supply.
Source kVA set too low.
Current loop vector limit set too low. Set the current loop vector limit back to the default.
AC contactor won’t close.
Stuck in configuring.
Check for messages on quick view pane of the controller organizer in the Logix
Designer application.
Contactor enable unplugged. Plug in the contactor enable.
AC contactor coil failure. Replace contactor.
Table 135 - Regenerative Bus Supply Troubleshooting (Continued)
Condition Potential Cause Possible Resolution
The INIT FLT xxx faults are always generated after powerup, but before the
drive is enabled, so the stopping behavior does not apply.
NODE ALARM xxx faults do not apply because they do not trigger stopping
behavior.
For troubleshooting SAFE FLT fault codes, refer to Chapter 9
on page 291
(hardwired safety) or page 302
(integrated safety).
The iTRAK power supply cannot be configured by using the Studio 5000 Logix
Designer application, but the pre-configured faults are shown on page 268
.
Table 136 - Kinetix 5700 Module Exception Action Definitions
Exception Action Definition
Ignore
The drive module completely ignores the exception condition. For some exceptions that are
fundamental to the operation of the planner, Ignore is not an available option.
Alarm
The drive module sets the associated bit in the Motion Alarm Status word, but does not
otherwise affect axis behavior. Like Ignore, if the exception is so fundamental to the drive,
Alarm is not an available option. When an exception action is set to Alarm, the Alarm goes
away by itself when the exceptional condition has cleared.
Minor Fault
The drive module latches the exception condition, but the drive does not execute any
exception action.
Major Fault
The drive module latches the exception condition and executes the configured exception
action.