Diagnosing And Resetting Faults; Fault And Power Loss Occur At The Same Time; Fault Occurs Without Power Loss; Fault Reset Procedure - YASKAWA GA500 Maintenance & Troubleshooting

2.9

Diagnosing and Resetting Faults

When a fault occurs and the drive stops, do the procedures in this section to remove the cause of the fault, then re-
energize the drive.
◆

Fault and Power Loss Occur at the Same Time

WARNING! Crush Hazard. Wear eye protection when you do work on the drive. If you do not use correct safety equipment, it can
cause serious injury or death.
WARNING! Electrical Shock Hazard. After the drive blows a fuse or trips a GFCI, do not immediately energize the drive or operate
peripheral devices. Wait for the time specified on the warning label at a minimum and make sure that all indicators are OFF. Then
check the wiring and peripheral device ratings to find the cause of the problem. If you do not know the cause of the problem, contact
Yaskawa before you energize the drive or peripheral devices. If you do not fix the problem before you operate the drive or peripheral
devices, it can cause serious injury or death.
1.
Supply power to the control circuit from the external 24 V input.
2.
Use monitor parameters U2-xx [Fault Trace] to show the fault code and data about the operating status of the
drive immediately before the fault occurred.
3.
Use the information in the Troubleshooting tables to remove the fault.
Note:
1. To find the faults that were triggered, check the fault history in U2-02 [Previous Fault]. To find information about drive status (such as
frequency, current, and voltage) when the faults were triggered, check U2-03 to U2-20.
2. If the fault display stays after you re-energize the drive, remove the cause of the fault and reset.
◆

Fault Occurs Without Power Loss

1.
Examine the fault code shown on the keypad.
2.
Use the information in the Troubleshooting tables to remove the fault.
3.
Do a fault reset.
◆

Fault Reset Procedure

If a fault occurs, you must remove the cause of the fault and re-energize the drive.
methods to reset the drive after a fault.
Methods
Method 1
While the keypad is showing the fault or alarm code, push
Switch ON the MFDI terminal set to H1-xx = 14 [MFDI Function Select = Fault Reset].
Method 2
1.
2.
Method 3
YASKAWA TOEPYAIGA5001A GA500 DRIVE MAINTENANCE & TROUBLESHOOTING
Table 2.3 Fault Reset Methods
Note:
The default setting for H1-04 [Terminal S4 Function Selection] is 14 [Fault Reset].
De-energize the drive main circuit power supply.
Energize the drive again after the keypad display goes out.

2.9 Diagnosing and Resetting Faults

Table 2.3 lists the different
Description
on the keypad.
2
81