Omron SYSDRIVE 3G3SV-B2002-E User Manual page 63

Protection function
Low-voltage protection
(main circuit voltage in-
sufficient)
Overtorque detection
Stall pre- During ac-
vention (Ac- celeration
cel/decel is
accom-
plished with
maximum
capacity of
the inverter the inverter
During nor-
without trip-
mal opera-
ping on
tion
overcurrent
or overvol-
tage.)
During de-
celeration
Simultaneous normal and
reverse rotation com-
mands
External base block sig-
nal input (main circuit
transistor instantaneous
shut-off)
Error causes
Input voltage drop
Motor current exceeded the set value
because of machine fault or overload.
Insufficient power for accel/decel
Overload
Phase loss
Operation sequence error
3-wire/2-wire selection error
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Section 2-12
Action to be taken
Check the main circuit DC voltage in
Un-xx. If the voltage is low, adjust the
input voltage.
Check the driven machine and correct
the cause of the fault or set to a higher
value.
Set proper accel/decel time for smooth
operation.
For stall prevention during normal op-
eration lighten the load or increase in-
verter capacity.
Recheck the control sequence.
Recheck constant settings (No. 32 and
No. 33).
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