YASKAWA
SIEP C730600 86F MECHATROLINK-II Technical Manual
37
9
Troubleshooting
◆
Fault Detection Processing
Faults can be detected by two methods: Drive fault detection and SI-T3 fault detection.
The SI-T3 is notified of drive faults by the internal interface, and the SI-T3 sends the response data, ALARM or
STATUS.
The SI-T3 notifies drive of SI-T3 faults by the internal interface, and the faults are simultaneously sent the
response data, ALARM or STATUS.
The following four types of faults can be detected. The subsequent operation varies depending on the type of fault.
Table 9.1 Fault Type
Fault Type
Location
Description
Alarm
Drive alarm
Drive
Fault that causes damage to the drive or machinery
Communications alarm
SI-T3
Interference related to MECHATROLINK-II communications
Warning
Drive warning
Drive
Illegal operation or minor fault not posing any immediate danger
Communications warning
SI-T3
MECHATROLINK-II communications fault warning
Table 9.2 Fault Type and SI-T3 Processing
Fault Type
SI-T3 Processing
Direction of
Communica
tions
Reset
MECHATROLINK Response
LED
(ERR)
Processing
ALARM
STATUS
WARNG
ALM
Drive alarm
CODE
-
1
-
No special processing
←
Required
Communications alarm
-
1
ON
Notification to drive
←
Required
Drive warning
1
-
-
No special processing
←
Required
Communications warning
1
-
-
No special processing
None
Not required
*1
Refer to
Drive Fault Notification on page 38
for detail.
Note:
− : No change
←: Fault notification from Drive
When consecutive alarms occur, the SI-T3 provides notification of the most recent alarm with a
MECHATROLINK response data. If warnings occur simultaneously, notification priority is given to the warning
with the lowest warning code. If alarms and warnings are mixed together, the SI-T3 gives notification priority to
alarms.
The following table shows the response data when consecutive alarms or warnings occurs.
Table 9.3 Response Data for Consecutive Alarms and/or Warnings
Fault Detection
MECHATROLINK-II Response Data Contents
Previous Value
Most Recent Value
ALARM
STATUS
WARNG
ALM
Alarm
Alarm
Most recent alarm code
0
1
Alarm
Warning
Most recent alarm code
1
1
Warning
Alarm
Most recent alarm code
1
1
Warning
Warning
Warning with the smaller warning code
1
0
◆
Alarm Processing
■
SI-T3 Communications Fault Detection
The following tables show the communications faults detected by the SI-T3 and the conditions in which they can
be detected.
