7 Troubleshooting ‹ General Fault and Alarms Faults and alarms indicate problems in the drive or in the machine. An alarm is indicated by a code on the data display and the flashing ALM LED. The drive output is not necessarily switched off. A fault is indicated by a code on the data display and the ALM LED is on. The drive output is always switched off immediately and the motor coast to stop. To remove an alarm or reset a fault, trace the cause, remove it and reset the drive by pushing the Reset key on the operator or cycling the power supply. This lists up the most important alarms and faults only. Please refer to the instruction manual for a complete list.
24 I80E-EN J1000 Quick Start Guide 7 Troubleshooting isplay ALM FLT Cause Block The software base block function is assigned to one of the digital inputs and the input is off. The drive does not accept Run commands. l Circuit ult There is a problem in the drive’s control circuit. to t Reset Fault reset was input when a run command was active. tion al Fault An external fault was tripped by the upper controller via an option unit. al Fault A forward and reverse command were input simultaneously for longer than 500 ms. This alarm stops a running motor. al Faults to • An external fault was triggered by an external device via one of the digital inputs S1 to S5.
• The digital inputs are set up incorrectly. t Phase oss • Output cable is disconnected or the motor winding is damaged. • Loose wires at the drive output. • Motor is too small (less than 5% of drive current). urrent • Short circuit or ground fault on the drive output side • The load is too heavy. • The accel./decel. times are too short. • Wrong motor data or V/f pattern settings. • A magnetic contactor was switched at the output.