ABB ACS880-x04, Firmware Manual, Page: 208 / 604

208 Parameters
DI6 Digital input DI6 ( 10.02 DI delayed status , bit 5). 8
DIO1 Digital input/output DIO1 ( 11.02 DIO delayed status , bit 0). 11
DIO2 Digital input/output DIO2 ( 11.02 DIO delayed status , bit 1). 12
Other [bit] Source selection (see Terms and abbreviations on page 114 ). -
21.06 Zero speed limit Defines the zero speed limit. The motor is stopped along a
speed ramp (when ramped stop is selected) until the defined
zero speed limit is reached. After the zero speed delay, the
motor coasts to a stop.
Note: If you use a value below the default, make sure the
drive is able to stop.
30.00 rpm
0.00 … 30000.00
rpm Zero speed limit. See par.
46.01
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 Def / FbEq16
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