180 Rockwell Automation Publication 2094-UM001J-EN-P - March 2017
Chapter 7 Troubleshooting the Kinetix 6000 Drive System
DriveHardFault
(NV Mem Init)
E70 Nonvolatile memory corrupted.
Coast/Disable (open 
contactor enable relay)
No
DriveHardFault
(Memory Init)
E71 RAM or nonvolatile memory validation failure.
Coast/Disable (open 
contactor enable relay)
No
DriveOvertempFault
(Drive Overtemp)
E72
Inverter temperature limit exceeded.
Firmware I
2
t protection does not generate a fault, rather it dynamically folds back 
current when 110% of drive rating is reached. Setting the Drive Thermal fault 
action to Status Only or Stop Motion bypasses the foldback behavior and allows the 
fault to occur.
N/A
Yes
Drive Thermal
Communicate
(Backplane Comm)
E73 Power rail backplane CAN communication failed. Decel/Disable No
DriveOvercurrentFault
(Bus OverCurrent)
E74 The converter has exceeded its converter rating.
Coast/Disable (open 
contactor enable relay)
No
DriveOvervoltageFault
(Shunt Time Out)
E75
The IAM/AM module or shunt module has exceeded its shunt resistor continuous 
rating. SHUTDOWN for IAM module, DISABLE for AM module. IAM module provides 
fault handling for shunt module.
Coast/Disable (open 
contactor enable relay)
No
DriveHardFault
(Can Init)
E76 Either DPI or backplane CAN initialization failure.
Coast/Disable (open 
contactor enable relay)
No
DriveHardFault
(Module Mismatch)
E77
Generated by IAM module if the power rating of an AM module on the same power 
rail does not match with IAM module input power rating.
Coast/Disable (open 
contactor enable relay)
No
DriveHardFault
Sercos Init
E78 Control hardware fault detected.
Coast/Disable (open 
contactor enable relay)
No
DriveOvervoltageFault
(Shunt Module Flt)
E79
Power rail mounted shunt module fault. Displayed on IAM module seven-segment 
fault status indicator.
Coast/Disable (open 
contactor enable relay)
No
HardwareFault
(CPLD Flt)
E80 Control hardware fault detected.
Coast/Disable (open 
contactor enable relay)
No
HardwareFault
(Common Bus Flt)
E81 Common-bus follower IAM module detected AC input power being applied.
Coast/Disable (open 
contactor enable relay)
No
HardwareFault
(Precharge Timeout Flt)
E90 Precharge resistor power exceeds the resistor rating.
Coast/Disable (open 
contactor enable relay)
No
IPIMFault
(IPIM Module Flt)
E95 A fault has occurred in one or more IPIM modules on the power rail. 
Coast/Disable (open 
contactor enable relay)
No
(1) The Logix5000 Motor Thermal Fault Action is tied to the motor thermostat fault. If this is set to Shutdown or Disable (in controller), the drive folds back the current when the I
2
T calculation indicates 
that the motor temperature has exceeded 10% of its rated temperature. If it is set to Stop Motion or Status Only, the drive does not fold back the current. The I
2
T calculation never generates a fault.
(2) The Logix5000 Drive Thermal Fault Action is tied to the drive thermostat fault. The drive always folds back the current when the I
2
T calculation indicates that the drive has exceeded 110% of its rating. 
The I
2
T calculation never generates a fault.
Table 113 - Logix5000/Drive Fault Behavior (continued)
Logix5000 Fault Message
(HIM Message)
Error
Code
Description
Drive Fault Action/
Attribute
Logix Designer 
Programmable 
Fault Action?