YASKAWA SGMAH, User Manual, Page: 462 / 488

Sigma II User’s Manual Appendix B: List of Parameters
B - 26
*1 Whether it is resettable after the cause of the alarm condition is removed, or whether
power cycling is necessary in order to reset the device.
A. b3 × × × × Current
detection error
For 1kW or smaller
models. Amplifier
stays in BB for 500ms
after servo ON signal
input and brake
release with the servo
in a ready state.
resettable Check the
wiring in motor
power line.
Replace the
servo
amplifier.
A.F5 × × × Motor
disconnection
alarm
The detected torque
is 10% or less, but the
commanded torque
reference is 90% or
more for 10ms. This
alarm is not activated
in cases of BB due to
hardware issues. In
those cases, an A.F6
or A.b3 is generated
instead.
resettable Check the
wiring in motor
power line.
Replace the
servo
amplifier.
Warning List
Warning
Warning Code Output
Warning
Name
Warning Occurring Cause Solution
ALO1 ALO2 ALO3
A.90 × × × Excessive
Position Error
Warning
Position error exceeds
Pn51E.
If a position error
is within Pn51E, it
automatically
reset.
Alarm list
Alarm
Alarm Code Output Servo
Alarm
Output
Alarm Name
Alarm Occurrence
Cause
Alarm
Reset
*1
Solution
ALO1 ALO2 ALO3