Protective Operations; Fault Detection Processing - YASKAWA VS mini V7 User Manual

8

Protective Operations

8.1

Fault Detection Processing

Fault Type
Alarm
Inverter alarm
Communications alarm
Warning Inverter warning
Communications warning
Fault Type
Inverter alarm
Communications alarm
Inverter warning
Communications
warning
Note: The meanings of each symbol are as follows.
−: No change
→: Fault notification to Inverter
←: Fault notification from Inverter
Faults can be detected by two methods: Inverter fault detection and SI-T/V7 fault detection.
The SI-T/V7 is notified of Inverter faults by the internal interface, and the SI-T/V7 sends the
response data, ALARM or STATUS.
The SI-T/V7 notifies Inverter of SI-T/V7 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 depend-
ing on the type of fault.
Major fault that causes damage to the Inverter or machinery
Interference related to MECHATROLINK-II communications
Illegal operation or minor fault not posing any immediate danger
MECHATROLINK-II communications fault warning
SI-T/V7 Processing
MECHATROLINK Response LED2
ALARM STATUS
WARNG ALM
−
1
CODE
−
1
CODE
−
1
CODE
−
1
CODE
When consecutive alarms occur, the SI-T/V7 provides notification of the most recent alarm
with a MECHATROLINK response data. If warnings occur simultaneously, notification pri-
ority is given to the warning with the lowest warning code. If alarms and warnings are
mixed together, the SI-T/V7 gives notification priority to alarms.
The following table shows the response data when consecutive alarms or warnings occurs.
Description
Processing
Status
−
No special processing
Lit
Notification to Inverter
−
No special processing
−
No special processing
44
Location
Inverter
SI-T/V7
Inverter
SI-T/V7
Direction of Reset
Communications
←
Required
→
Required
←
←
Required
None Not required