Alarm processing, Refer to, Si-t3 communications fault detection – Yaskawa 1000 Series Drive Option - MECHATROLINK-II Technical Manual User Manual
Page 31: Other faults

9 Troubleshooting
YASKAWA ELECTRIC
SIEP C730600 50A YASKAWA AC Drive-Option Card MECHATROLINK-II Technical Manual
31
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.
Table 22 Reception Failures in Each Phase
Table 23 Alarm Code (MECHATROLINK-II Response ALARM Value)
Table 24 Fault Types
Other Faults
The following table shows other faults that can be detected by the SI-T3. If a warning occurs, operation will follow the
previous command.
Table 25 Other fault detected by SI-T3
Communications Phase
Reception Failure
Transmission cycle
First
Second (Consecutive)
Fault
Phase 1
−
−
−
Phase 2
96
E6
E6
Phase 3
96
E6
E6
ALARM
Description
Fault Type
96
MECHATROLINK-II communications fault warning
Communications warning
E5
MECHATROLINK-II WDT Error
Communications alarm
E6
MECHATROLINK-II communications fault
Communications alarm
Fault
Description
Communications failure
Transmission LSI detected a data reception failure.
Transmission cycle fault
A timing fault of a synchronous frame in a transmission cycle was detected.
Watchdog timer error
A WDT count fault in a synchronous frame was detected.
ALARM
Description
Fault Type
Operation when Fault Occurs
94
Data setting warning
<1> If the ERR indicator is not lit or flashing, any commands that are received will be ignored.
Communications warning
Received commands are ignored.
95
Command warning
Communications warning
Received commands are ignored.
EC
WDC fault with drive
Communications alarm
Waits for power supply to be reset.
ED
Drive access permission fault
(Access not possible 10 consecutive times)
Communications alarm
Waits for power supply to be reset.
EE
Drive monitor timer over (1 s elapsed)
Communications alarm
Waits for power supply to be reset.
Received commands are ignored.