DIR_a123 — Loss Motor Control

Full alert identifier: DIR_a123_lossMotorControl

Alert description

Drive Inverter Warning: Loss of motor control

Unable to produce torque/power from drive unit

Motors are not responding to DI commands

Motors respond to DI commands

These diagnostic fields are associated with DIR_a123. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
Bad Current `DIR_a123_badCurrent`	A
Bad Flux `DIR_a123_badFlux`	Wb
Bus Voltage `DIR_a123_busVoltage`	V
Loss Reason `DIR_a123_lossReason` 1 NO FLUX UP 2 HIGH VAR FLUX 3 HIGH VAR CURR 4 HIGH FLUX DISTURBANCE	—
Loss Request `DIR_a123_lossRequest`	kW
Motor RPM `DIR_a123_motorRPM`	RPM
Variance D `DIR_a123_varianceD`	A
Variance Q `DIR_a123_varianceQ`	A

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DIR_a123.