Actual signals and parameters 223
2112 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
accurately the rotor position.
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.
0.0 =
NOT SEL
0.0 = NOT SEL
0.0…60.0 s
Delay time. If parameter value is set to zero, Zero speed
delay function is disabled.
1 = 0.1 s
22 ACCEL/DECEL Acceleration and deceleration times
2201 ACC/DEC 1/2
SEL
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.
DI5
NOT SEL Ramp pair 1 is used. 0
DI1 Digital input DI1. 1 = ramp pair 2, 0 = ramp pair 1. 1
DI2 See selection DI1.2
DI3 See selection DI1.3
DI4 See selection DI1.4
DI5 See selection DI1.5
All parameters
No. Name/Value Description Def/FbEq
t t
Speed controller
switched off: Motor
coasts to stop.
Speed controller
remains live. Motor is
decelerated to true 0
speed.
No Zero speed delay With Zero speed delay
Speed Speed
Delay
Zero speedZero speed
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