The zero current detection level setting should not be too high, and the
zero current detection time setting should not be too long. Otherwise, the
detection signal may not be output when torque is not generated at a low
To prevent the machine and equipment from resulting in hazardous
conditions by use of the zero current detection signal, install a safety
backup such as an emergency brake.
4.2.40 Stall prevention function and current limit function (Pr. 156)
Pr. 156 " stall prevention operation
You can make a setting to disable stall prevention caused by overcurrent, make a
setting to disable the fast-response current limit (which limits the current to prevent the
inverter from resulting in an overcurrent trip if an excessive current occurs due to
sudden load variation or ON-OFF, etc. in the output side of the running inverter), and
set the OL signal output delay.
0 to 31, 100
Pr. 22 "stall prevention operation level"
Pr. 23 "stall prevention operation level
at double speed"
Pr. 47 "second stall prevention
Pr. 48 "second stall prevention