Yaskawa DSD 406 - Manual (Page 79)

4 Maintenance
75 Troubleshooting Guide
3/21/96
Fault/Error Possible Causes &
Code
Fault/Error Name
Corrective Actions
Table 3. Troubleshooting Guide – Continued
924
925
926
Field Current Setting Error
Field Sense Resistor Fault
PCU Watchdog Timeout Fault
Setting for Rated Field Current is not
within a range based on the version of Field
Interface PCB present in the power cube.
See “Field Interface PCB Ratings”/
Maintenance Parts List. Also see the
possible causes for F925.
➊
Check setting and adjust as required.
1. Connector J13 is out of place.
2. Faulty Field Interface PCB.
3. Faulty DSD Drive Control PCB.
➊
Verify J13 is in proper location.
❷
Replace Field Interface PCB.
❸
Replace Drive main PCB.
See “Replacing DSD Drive Control
PCB”/Maintenance Section.
1. Problem with either hardware or
software on the DSD Drive Control
PCB.
2. Ambient noise near the drive's main
PCB.
➊
Electromagnetic noise near the drive's
main PCB may be the cause. Record the
situations during which this fault
occurred. Eliminate noise.
❷
Contact MagneTek for assistance.