Yaskawa DSD 406 - Manual (Page 69)

Fault/Error Possible Causes &
Code
Fault/Error Name
Corrective Actions
4 Maintenance
65 Troubleshooting Guide
3/21/96
Often caused by slipping nip or improper
data entry to the drive.
➊
Regulator settings need adjusting.
❷
Check all parameters and inputs against
application limits.
1. Thumbwheel switch connected directly
to drive contains an invalid digit
2. Selected bank of Thumbwheel switches
is not present.
➊
Check cables and connections.
❷
Check Bank Select jumper positions on
the Thumbwheel Selector Switch
Assemblies.
Hardware Failure in the Power Conversion
Unit
➊
Replace main drive PCB board. See
“Replacing Drive Control PCB”/
Maintenance Section.
Hardware or Software Failure/Improper
Addressing Attempted
➊
Unplug and reseat all cables and socketed
devices.
❷
Replace drive main PCB board. See
“Replacing Drive Control PCB”/
Maintenance Section.
104
110
111
113
220
221
222
223
224
232
240
241
242
243
244
252
Sign Error in Speed Regulator
Bad Thumbwheel Digit
Missing Thumbwheel Switch
● Missing PCU
● 68K ROM Bus Error
● 68K RAM Bus Error
● 68K NVRAM Bus Error
● 68K DPRAM Bus Error
● LAN Bus Error
● Unknown Bus Error
● 68K ROM Address Error
● 68K RAM Address Error
● 68K NVRAM Address Error
● 68K DPRAM Address Error
● LAN Address Error
● Unknown Address Error
Table 3. Troubleshooting Guide – Continued