GA500 troubleshooting answers
6 questions with answers cited from the manufacturer manuals.
- 0GA500 oH Heatsink Overheat: what to check first?
The GA500 oH fault indicates the heatsink temperature has exceeded the level set in L8-02. This often points to high ambient temperatures, insufficient cooling, or a heavy load. The drive will stop as configured by L8-03…
- 0Yaskawa GA500 oL1 after running a while, output current above FLA: what to check?
The oL1 fault on a Yaskawa GA500 drive indicates a motor overload, meaning the drive's electronic thermal motor protection has tripped. This fault can only be reset once the motor overload level (U4-16) is below 100. Com…
- 0Yaskawa GA500 trips GF at startup, what to check first?
A Yaskawa GA500 Ground Fault (GF) indicates a current short to ground on the output side of the drive, exceeding 50% of the drive's rated current. This fault can be triggered by damaged motor insulation, a shorted motor …
- 0GA500 Uv1 fault on a conveyor, what to check first?
A Uv1 fault on a Yaskawa GA500 drive indicates a DC Bus Undervoltage, meaning the DC bus voltage dropped below the level set in L2-05 while the drive was operating. This typically occurs when the input power supply is un…
- 0GA500 trips ov fault during deceleration, what to check?
An 'ov' overvoltage fault on a Yaskawa GA500 drive indicates the DC bus voltage exceeded its detection level, typically 410V for 200V class or 820V for 400V class drives. This often occurs during deceleration due to rege…
- 0Yaskawa GA500 trips oC instantly at start, even unloaded: what to check?
An oC fault on a Yaskawa GA500 drive indicates that the output current exceeded the specified overcurrent detection level. An instant trip at start, especially when unloaded, strongly suggests an issue with the motor cab…