YASKAWA SGDB-15VN User Manual page 278

Alarm Code
(Alarm/warning History)
"C5" At the SENS-ON or CONFIG
command transfer
Initial pulse error
"00" Lit in several seconds after
power ON
Absolute encoder data
error
"02" Lit at power ON
Broken user constant
"94" Lit at power ON
User constant setting
warning
"95,,
At command transfer
Command warning
At the SV—ON command
transfer
At the synchronous command
(SYNC_SET) transfer
"7A" Lit during operation
Heat sink overheated
At control power supply turn
ON
"E5" At command transfer
Synchronization error
At control power supply turn
"96", "E6"
ON
Communications error
At control power supply turn
"BE"
ON
Hardware error
At main circuit power supply
turn ON
At main circuit power supply
turn OFF
Status When Lit
Incorrect encoder type setting
Faulty encoder
Faulty control board (1PWB)
• Absolute encoder malfunctioned. Turn power back ON.
• Absolute encoder wiring incor-
rect.
Circuit board (1PWB) defective.
An user constant was set out of range
via MECHATROLINK communica-
tion or the setting order was incor-
rect.
The CONNECT command has not
been transferred.
The CONNECT or SENS—ON
command has not been transferred.
Main power supply not turn ON.
Communication phase 3 has not been
reached.
SERVOPACK ambient temperature
exceeds 55°C.
Poor heat sink air circulation.
Fan stopped.
Driving above the rated load.
Control board (1PWB) defective.
WDT data does not match.
Faulty contact between cable and
connector .
Malfunction due to noise
Control board (1PWB) defective.
Rectifier diode malfunctioned.
Fuse blown.
Rush current limit resistor blown.
Regenerative transistor
malfunctioned.
Regenerative transistor and regenera-
tive resistor malfunctioned.
Control board (1PWB) defective.
12 -9
Cause
Reset the encoder type
Replace the encoder.
Replace the SERVOPACK.
Follow the absolute encoder
setup procedures.
Check and correct absolute
encoder wiring.
Replace SERVOPACK.
Set the correct setting and
review the exact setting order.
Transfer the CONNECT com-
mand.
Transfer the CONNECT or
SENS—ON command.
Turn ON the main power sup-
ply. (Check the sequence.)
Establish a sync by CON-
NECT command (normal,
synchronum) or the SYNC—
SET command.
Reduce SERVOPACK ambient
temperature to under 55°C.
Follow the mounting proce-
dures and stipulation for sur-
rounding space.
Replace SERVOPACK.
Reduce the load.
Replace SERVOPACK.
Update the WDT data at each
communication cycle.
Correct the connector wiring.
Take action to eliminate noise.
Replace SERVOPACK.
12.2 Troubleshooting
Remedy