ABB ACS880 Firmware Manual page 206

206 Parameters
No. Name/Value
DI6
DIO1
DIO2
Other [bit]
21.06 Zero speed limit
0.00 ... 30000.00
rpm
21.07 Zero speed delay
0 ... 30000 ms
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Description
Digital input DI6 (10.02 DI delayed
Digital input/output DIO1 (11.02 DIO delayed
Digital input/output DIO2 (11.02 DIO delayed
Source selection (see Terms and abbreviations
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.
Zero speed limit.
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.
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
stopped and the motor coasts to a standstill.
Speed
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
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.
Speed
Delay
Zero speed delay.
status, bit 5).
status, bit 0).
status, bit 1).
on page 112). -
limit, inverter modulation is
Speed controller switched off:
Motor coasts to a stop.
21.06 Zero speed limit
Time
limit, the zero speed delay
Speed controller remains
active. Motor is decelerated to
true zero speed.
21.06 Zero speed limit
Time
Def/FbEq16
8
11
12
30.00 rpm
See par.
46.01
0 ms
1 = 1 ms