232 Actual signals and parameters
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…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
.
Ramp pair 2 is defined by parameters
.
NOT SEL
Ramp pair 1 is used.
0
DI1
Digital input DI1. 1 = ramp pair 2, 0 = ramp pair 1.
1
DI2
See selection
2
DI3
See selection
3
DI4
See selection
4
DI5
See selection
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 speed
Zero speed
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...