Yaskawa DSD 406 - Manual (Page 66)

Fault/Error Possible Causes &
Code
Fault/Error Name
Corrective Actions
4 Maintenance
62 3/21/96
Application of 120 VAC control power
with 3 phase power off.
➊
Remove 120 VAC control power and
reapply after 3 phase power is present.
❷
New PCU EPROMs that allow control
power to be applied without 3 phase
present is available. Contact MagneTek.
Main PCB Hardware.
Invalid DCU Instruction.
➊
Unplug and reseat all cables and socketed
devices.
❷
Replace main drive PCB. See “Replacing
Drive Control PCB”/Maintenance Section.
❸
Electromagnetic noise near the drive’s
main PCB may be the cause. Record
the situations during which this fault
occurred. Eliminate noise.
Divide By Zero
➊
If this fault occurs a few times on power-
up, then it can be ignored if the drive is
operating properly. The purpose of this
fault is to assist in checking new code.
Disable this unnecessary fault by using
Function 801/See “Error Handling &
Reporting”/Operation Section. Remove
this fault from both the fault list and the
error list.
❷
If this error occurs at times other than at
power-up, or if the drive is not operating
properly, then the drive’s PAC code
should be reviewed. The fault producing
Block can be identified by accessing the
Error or Fault List.
Main PCB Hardware
➊
Unplug and reseat all cables and socketed
devices.
❷
Replace main drive PCB. See “Replacing
Drive Control PCB”/Maintenance Section.
❸
Electromagnetic noise near the drive’s
main PCB may be the cause. Record
the situations during which this fault
occurred. Eliminate noise.
Troubleshooting Guide
– – –
13
14
15
16
17
21
● Line Fuses Open
● Bad Instruction
● Exception Vector 10
● Exception Vector 11
● Privilege Violation
DCU Divide By Zero
● Watchdog Trip
Table 3. Troubleshooting Guide – Continued