Cause : EMERGENCY STOP comes when drive has received emergency stop command and ramps to stop according to ramp time defined by parameter 2208 EMERG DEC TIME.

The A2023 alarm code on your ABB ACS355 drive indicates an Emergency Stop situation. This means the drive has received a command to stop the motor immediately, likely due to a safety concern.

1. Check that it is safe to continue operation.
2. Return emergency stop push button to normal position.