Category: Faults & Alarm

Facing the ABB ACS880 Fault 9081? This “External Fault 1” means a safety device or PLC has signaled a stop. Learn how to trace the source using parameters 31.01 and 31.02. The ABB ACS880 drive is designed to be the “heart” of your machine, but it often needs to listen to the “brain” (the PLC)Read more ⟶

Troubleshooting the ABB ACS480 Fault 3381? Learn how to identify and fix “Output Phase Loss” by checking motor connections, cabling, and internal settings. If you are working with an ABB ACS480 versatile drive and your process stops with Fault 3381, the drive has detected a break in the electrical circuit between its output terminals andRead more ⟶

Getting Alarm 13 (A13) on your Danfoss VLT drive? Learn the common causes of overcurrent, how to perform a mechanical check, and steps to verify motor compatibility. If your Danfoss VLT drive (such as the FC-102, FC-202, or FC-302) has suddenly stopped and the display is flashing Alarm 13, you are dealing with a criticalRead more ⟶

Facing F0021 on your ABB ACS550? Learn what the Current Measure Fault means, how to troubleshoot internal hardware, and when to call for a repair. If your ABB ACS550 drive has suddenly tripped with Fault F0021, it can be a bit more stressful than a standard trip. This code stands for Current Measure Fault, andRead more ⟶

Getting the A2021 alarm on your ABB ACH550 HVAC drive? Learn how to fix the “Start Enable 1 Missing” error, configure parameter 1608, and check your safety interlocks. If you are maintaining an HVAC system and your ABB ACH550 drive refuses to start, displaying Alarm A2021: Start Enable 1 Missing, you aren’t necessarily looking atRead more ⟶

Facinf the ABB ACS560 fault 2310? This alarm signals an overcurrent condition. Learn how to diagnose motor shorts, check mechanical jams, and optimize your VFD settings. In the ABB ACS560 drive, Warning 2310 is a clear signal that the drive is sensing an Overcurrent condition. This means the motor is drawing more current than theRead more ⟶

Siemens SINAMICS G120 showing Fault F30055? Learn how to troubleshoot braking chopper overcurrent, check for resistor short circuits, and verify sizing. If your Siemens SINAMICS G120 drive trips with Fault F30055, it has detected a dangerous current spike within its internal braking circuit. The braking chopper is the component responsible for “dumping” excess energy fromRead more ⟶

Facing Fault 5091 on your ABB ACS580? This guide explains why the Safe Torque Off (STO) circuit triggers, how to check your wiring, and how to configure parameter 31.22. If you are working with an ABB ACS580 drive and the control panel suddenly displays Fault 5091, the first thing to know is that your driveRead more ⟶

Is your INVT drive flashing the OL2 fault? Learn the difference between motor and inverter overload, and follow our step-by-step guide to fixing acceleration, voltage, and sizing issues. If you are using an INVT Variable Frequency Drive (such as the Goodrive GD20 or GD200A series) and the display trips with OL2, the drive is sendingRead more ⟶

Facing the oFC00 error on your Yaskawa drive? This indicates an option card incompatibility in port CN5-C. Learn how to verify compatibility, check card seating, and resolve the error. If your Yaskawa drive suddenly displays the oFC00 error, the drive has detected a hardware mismatch. Specifically, this error indicates an Option Card Connection Error occurringRead more ⟶