Accel/Decel - ABB ACS355 User Manual

All parameters
No. Name/Value
2112 ZERO SPEED
DELAY
0.0 = NOT SEL
0.0...60.0 s

22 ACCEL/DECEL

2201 ACC/DEC 1/2
SEL
NOT SEL
DI1
DI2
DI3
DI4
DI5
Description
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
accurately the rotor position.
No Zero speed delay
Speed
Speed controller
switched off: Motor
coasts to stop.
Zero speed
No Zero speed delay
The drive receives a stop command and decelerates along
a ramp. When the motor actual speed falls below an internal
limit (called Zero speed), the speed controller is switched
off. The inverter modulation is stopped and the motor coasts
to standstill.
With Zero speed delay
The drive receives a stop command and decelerates along
a ramp. When the actual motor speed falls below an internal
limit (called Zero speed), the zero speed delay function
activates. During the delay the functions keeps the speed
controller live: The inverter modulates, motor is magnetized
and the drive is ready for a quick restart.
Delay time. If parameter value is set to zero, Zero speed
delay function is disabled.
Acceleration and deceleration times
Defines the source from which the drive reads the signal
that selects between the two ramp pairs,
acceleration/deceleration pair 1 and 2.
Ramp pair 1 is defined by parameters 2202...2204.
Ramp pair 2 is defined by parameters 2205...2207.
Ramp pair 1 is used.
Digital input DI1. 1 = ramp pair 2, 0 = ramp pair 1.
See selection DI1.
See selection DI1.
See selection DI1.
See selection DI1.
Actual signals and parameters 223
With Zero speed delay
Speed
Speed controller
remains live. Motor is
decelerated to true 0
speed.
Zero speed
t
Delay
Def/FbEq
0.0 =
NOT SEL
t
1 = 0.1 s
DI5
0
1
2
3
4
5