Lenze i510 - Flying Restart Function

10.11 Flying restart funcon
This funcon makes it possible to restart a coasng motor on the y during operaon without
speed feedback. Synchronicity betw
een the inverter and the motor is coordinated so that the
transion to the rotang drive is eected without jerk at the me of connecon.
Precondions
•
The "Flying restart process" funcon is only suit
able for asynchronous motors.
•
The "Flying restart process" funcon is only used if selecon 2 is se
t as starng performance
in 0x2838:001 (PAR 203/001).
Details
The funcon works with a simple motor model requiring knowledge of the motor stator resist-
ance and the rated motor current. The inverter determines synchronicity by idenfying the
synchronous eld frequency. The "Flying restart process" is completed within approx.
0.5 ... 1.5 seconds. The duraon is inuenced by the start frequency 0x2BA1:001
(PAR 718/001). If the eld frequency is not known, a xed start frequency of 10 Hz (or -10 Hz
for systems rotang in the negave direcon) is recommended.
Parameter Name / value range / [default seng] Info
0x2BA1:001
(PAR 718/001)
Flying restart cir
cuit: Current
(Flying restart circuit: Flying restart current)
0 ... [30] ... 100 %
Current that is injected into the motor during the ying restart process
for the idencaon of the speed.
•
Reducing the current causes a reducon of the motor torque during
the ying restart process. A short-me starng acon or reversing of
the motor is prevented with low ying restart currents.
•
If the current is increased, this improves the robustness of the ying
restart funcon.
0x2BA1:002
(PAR 718/002)
Flying restart circuit: Start frequency
(Flying restart circuit: Start frequency)
-599.0 ... [20.0] ... 599.0 Hz
Restart frequency for ying restart process.
0x2BA1:003
(PAR 718/003)
Flying restart circuit: Restart me
(Flying restart circuit: Flying restart me)
1 ... [5911]* ... 60000 ms
•
Default seng depending on the size.
Restart me for ying restart process.
•
The duraon of the ying restart process can be inuenced by the set-
ting of the restart me.
•
A reducon of the restart me causes an accelerated ying restart
process and therefore a reduced ying restart duraon.
0x2BA1:008
(PAR 718/008)
Flying restart circuit: Flying restart frequency
(Flying restart circuit: Flying restart frequency)
•
Read only: x.x Hz
Addional funcons
Flying restart funcon
182
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