DIR_a244 — Mech Safe State Applied
Full alert identifier: DIR_a244_mechSafeStateApplied
Alert description
Alert for software trigger of mechanical safe state two-phase disconnect device.
Potential impact
The motor is permanently disabled.
Set condition
Software detects a shorted semiconductor switch. The alert log signals provide detailed trigger algorithm info.
Clear condition
Clears when low voltage (LV) power is removed from drive unit or a non-drive/drive cycle occurs
Signals to check
These diagnostic fields are associated with DIR_a244. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Desat High Side
DIR_
|
— |
Desat Low Side
DIR_
|
— |
Flyback Fault
DIR_
|
— |
Gate Drive IC Undervoltage
DIR_
|
— |
Ir Sensor V
DIR_
|
V |
Plausible Single Switch Short Only
DIR_
|
— |
Post Short Test Failed
DIR_
|
— |
Single Switch Short
DIR_
|
— |
Show 1 more field
| Signal | Unit |
|---|---|
Uds Self Test
DIR_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DIR_a244.