ABB ACS850 series, Руководство пользователя

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166 Parameters
19.07 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.
Without 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
19.06 Zero speed limit , 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 the value of
parameter
19.06 Zero speed limit , the zero speed delay
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.
0 … 30000 ms Zero speed delay. 1 = 1 ms
19.08 Above speed lim Defines the supervision limit for the actual speed. See also
parameter
02.13 FBA main sw , bit 10.
0 … 30000 rpm Actual speed supervision limit. 1 = 1 rpm
No. Name/Value Description FbEq
Speed controller switched off:
Motor coasts to stop.
19.06 Zero speed limit
Speed
Time
Speed controller remains
active. Motor is decelerated to
true zero speed.
19.06 Zero speed limit
Speed
Time
Delay