ABB ACSM1 Firmware Manual page 119

22.06 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
Speed
Speed controller
switched off: Motor
coasts to stop.
No Zero Speed Delay
The drive receives a stop command and decelerates along a ramp. When the motor actual speed falls
below the value of parameter
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 the value of parameter
During the delay the function keeps the speed controller live: the inverter modulates, motor is
magnetised and the drive is ready for a quick restart. Zero speed delay can be used, eg, with the
jogging function.
0...30000 ms
22.07 ABOVE SPEED LIM
Defines the supervision limit for the actual speed. See also parameter
0...30000 rpm
FW block: SPEED FEEDBACK
22.05 ZERO SPEED LIMIT
Time
22.06 ZERO SPEED DELAY
22.05 ZERO SPEED
22.05 ZERO SPEED
Zero speed delay.
FW block: SPEED FEEDBACK
Supervision limit for actual speed.
(see above)
With Zero Speed Delay
Speed
Speed controller remains live.
Motor is decelerated to true 0
speed.
LIMIT, the speed controller is switched off. The
LIMIT, the zero speed delay function activates.
(see above)
2.13 FBA MAIN
Parameters and firmware blocks
119
Time
SW, bit 10.