Yaskawa MP940 Reference Manual - Manual (Page 334)

System Errors MotionSuite™ MP940 Machine Controller Reference Manual
9-6
Processing Flow at System Error Generation
The following shows the troubleshooting flow at system error generation.
• For the LED display patterns, see “Content of LED Display” in the
“LED Error List”.
Classification of error
content by LED
display pattern
Classification = Warning
" RDY" + " RUN" + " ALM" Lit
Classification = Fatal Error
Hardware Fault/Watchdog
timeout " ALM" LED ON only
Turn RUN switch (DPSWCH
2) OFF and re-feed power
On-line stop mode
" RDY" light ON only
Check content of
SW00050
User Program Error
10.2.3 See " Process
Flow at User Program
Error" , and verify the
error location
Hardware
Fault
(1) Program memory not
initialized.
(2) Scan time setting error
Battery Alarm
Battery
Replacement
CPU Error Status (SW00041)
Contnet Check
(1) Operation error (SB000418)
See 10.2.4 " User Operation
Error Status"
(2) I/O Error (SB000419)
See 10.2.4 " System I/O Error
Status"
(3) Interrupt Error (SB00041A)
Hardware Fault
YES
NO
NO
YES
YES
User program
error
Other
YES
Watchdog Timeout
YES
NO
NO
START
YES
NO
" RDY" + " ALM"
Servo Amplifier
LED display =
" A9F"
NO
MP940 Module Errors
SB00041B LIO
SB00041C SVA
SB00041D CNTR
SB00041E M-LINK
SB00041F CERF
YES
Warning