Drive trips on overcurrent, overvoltage, ground fault, or comms error.
1
DC bus overvoltage on decel
Rotary screw
CheckFault history: OV / DC bus high during stop.
FixExtend decel ramp; add brake resistor if regen is involved.
Sign in to rate whether this fix helped.
2
Motor overcurrent (OC)
Rotary screw
CheckCheck airend torque demand; verify discharge pressure setpoint.
FixLower setpoint or address mechanical bind; check inlet valve.
Sign in to rate whether this fix helped.
3
Ground fault on motor cable
criticalCheckMegger motor + cable (disconnect drive first to protect transistors).
FixRepair cable, dry windings, or replace motor.
SafetyNever megger with VSD connected — IGBTs will be destroyed.
Sign in to rate whether this fix helped.
4
Drive overheating
CheckHeatsink fan running? Ambient < drive max (often 40°C). Filters clean?
FixClean filters, repair fan, derate or relocate drive.
Sign in to rate whether this fix helped.
5
Comms loss with controller
CheckModbus/CAN cable continuity; termination resistors.
FixRe-terminate, add shielding, check ground loops.
Sign in to rate whether this fix helped.
6
Input phase loss
CheckDrive logs input phase loss; verify supply L1/L2/L3.
FixRestore supply phase, replace input fuses.
Sign in to rate whether this fix helped.
Did we solve your issue?
Sign in to share what resolved it and help others.
Safety
Lockout/tagout before opening enclosures. Verify zero energy. Bleed system pressure before opening any pneumatic connection.