5093 Rating ID Mismatch Fault in ABB ACS560 Drive

5093 Rating ID Mismatch in the ABB ACS560 Drive indicates that the drive hardware does not match the rating information stored in the internal memory or memory unit. During startup, the drive compares the installed power hardware with the stored Rating ID. If the information does not match, the drive generates Fault 5093 and prevents normal operation to avoid incorrect control of the power electronics.

This fault generally indicates a problem with the hardware identification, firmware, memory data, or internal control hardware, rather than a fault with the motor or external wiring.

Possible Causes

• Firmware update completed incorrectly.
• Hardware information stored in memory does not match the installed drive.
• Corrupted memory data.
• Internal memory unit failure.
• Control board replacement without updating memory.
• Power unit replacement causing hardware mismatch.
• Incompatible firmware version.
• Corrupted hardware identification data.
• Failed firmware upgrade.
• Internal EEPROM or flash memory corruption.
• Defective control board.
• Defective memory circuit.
• Interrupted firmware update.
• Internal hardware failure.
• Aging electronic components.

Solutions

• Cycle power to the drive.
• Repeat the power cycle if the fault remains.
• Reset the drive and verify whether the fault clears.
• Verify that the firmware update completed successfully.
• Check that the installed firmware is compatible with the drive hardware.
• Inspect the control board for signs of damage.
• Verify that the hardware configuration matches the drive model.
• Restore the correct firmware if necessary.
• Reload the drive parameters if applicable.
• Replace the defective control board if required.
• Repair the drive if the hardware identification circuit has failed.
• Replace the drive if the fault cannot be corrected.
• Contact ABB technical support for hardware diagnostics.

Additional Information

The ABB ACS560 stores a Rating ID, which identifies the installed power hardware and its electrical ratings. During startup, the control unit compares the stored Rating ID with the actual hardware installed in the drive.

If the comparison fails, the drive generates Fault 5093 Rating ID Mismatch and blocks operation.

According to ABB, this fault may occur, for example:

• After a firmware update.
• If the firmware update was interrupted.
• When hardware identification information becomes corrupted.
• After replacement of internal hardware without updating the stored configuration.

In many cases, cycling the drive power once or twice allows the hardware identification process to complete successfully and clears the fault.

If repeated power cycling does not resolve the fault, the problem is generally caused by an internal hardware or memory failure, requiring repair or replacement of the drive.

Unlike motor or power faults, Fault 5093 is an internal hardware identification fault.

Common Symptoms

• Drive displays Fault 5093 Rating ID Mismatch.
• Fault appears immediately after power-up.
• Fault occurs after a firmware update.
• Drive will not start.
• Startup is inhibited.
• Fault remains after reset.
• Repeated power cycling may temporarily clear the fault.
• Drive cannot complete initialization.
• Parameter access may be limited.
• Normal operation is prevented.

Recommended Troubleshooting Sequence

1. Cycle power to the drive.
2. Repeat the power cycle if necessary.
3. Reset the fault.
4. Verify whether the fault clears.
5. Check if the fault appeared after a firmware update.
6. Verify the firmware version is correct.
7. Inspect the control board for hardware damage.
8. Confirm the drive hardware matches the installed firmware.
9. Reload firmware if recommended by ABB.
10. Restore drive parameters if applicable.
11. Test normal startup.
12. Repair or replace the drive if the fault persists.
13. Contact ABB technical support for further diagnosis.

Rating ID Mismatch Check Table

Check Point	Action
Power cycle	Restart the drive
Second power cycle	Repeat if required
Fault reset	Verify whether the fault clears
Firmware	Check successful installation and compatibility
Hardware identification	Verify correct hardware configuration
Control board	Inspect for damage
Memory data	Check for corruption if applicable
Drive startup	Verify successful initialization
Drive repair	Repair if hardware identification has failed
Drive replacement	Replace if fault cannot be corrected
ABB technical support	Contact if the fault remains after inspection

Preventive Maintenance Tips

• Use only ABB-approved firmware for the ACS560.
• Do not interrupt firmware updates.
• Verify firmware compatibility before updating the drive.
• Maintain a stable power supply during firmware upgrades.
• Back up drive parameters before performing firmware updates.
• Perform a controlled power cycle after firmware installation.
• Avoid replacing internal hardware with incompatible components.
• Inspect the control board periodically for signs of damage or aging.
• Record recurring Rating ID Mismatch faults to assist long-term diagnostics.
• Repair hardware faults promptly to prevent repeated startup failures.

Proper verification of the firmware installation, hardware identification, and control board condition, along with performing the recommended power cycling procedure after firmware updates, will help prevent recurring 5093 Rating ID Mismatch faults in ABB ACS560 drives, ensuring reliable startup, accurate hardware recognition, and dependable long-term operation of the drive system.