ABB ACS180 - Page 155

Parameters 155
21.07 Zero speed delay Defines the delay for the zero speed delay function. The
function is useful in applications where a smooth and
quick restarting is essential. During the delay, the drive
knows the rotor position accurately.
0 ms
Without zero speed delay
:
The drive receives a stop command and decelerates
along a ramp. When actual motor speed falls below the
value of parameter 21.06 Zero speed limit, inverter
modulation is stopped and the motor coasts to a standstill.
With zero speed delay
:
The drive receives a stop command and decelerates
along a ramp. When actual motor speed falls below the
value of parameter 21.06 Zero speed limit, the zero speed
delay function activates. During the delay the function
keeps the speed controller live: the inverter modulates,
motor is magnetized and the drive is ready for a quick
restart. Zero speed delay can be used e.g. with the
jogging function.
0…30000 ms Zero speed delay. 1 = 1 ms
No. Name/Value Description Default
FbEq 16
Speed controller switched off
Motor coasts to a stop.
21.06 Zero speed limit
Speed
Time
Speed controller remains
active. Motor is decelerated to
true zero speed.
21.06 Zero speed limit
Speed
Time
Delay
ACS180 FW.book Page 155 Tuesday, March 9, 2021 2:25 PM