Function library
Acceleration, deceleration, braking, stopping
7−27
L
EDB82MV752 EN 5.2
7.5.2 Quick stop
Description
Quick stop decelerates the drive to standstill according to the deceleration time set under C0105,
as soon as the signal DCTRL1−QSP is activated.
If the output frequency falls below the threshold C0019, the automatic DC injection brake (DCB) is
activated. After the holding time (C0106) the controller sets pulse inhibit (display: ).
Quick stop acts on
the main setpoint (NSET1−N1, NSET1−N2).
the additional setpoint (PCTRL1−NADD).
the process controller setpoint 1 (PCTRL1−SET1) (only application I/O).
) Note!
The S−shaped ramp (C0182) has also an effect on quick stop! Therefore the real
deceleration time is longer than set under C0105.
Reduce the time setting under C0105 to reach the desired deceleration time for
quick stop.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0105 Deceleration time
quick stop (QSP)
5.00 0.00 {0.02 s} 1300.00 Quick stop (QSP) decelerates the drive
to standstill according to the ramp set
under C0105.
If the output frequency falls below the
threshold C0019, the DC−injection brake
(DCB) will be activated.
The S−shaped ramp (C0182) has also an
effect on quick stop!
– Reduce the time setting under C0105
to reach the desired deceleration
time for quick stop.
– The S−shaped ramp for the quick stop
can be switched off under C0311 (as
of software 3.1).
7−27
C0019 Operating threshold
− automatic DC
injection brake
(auto DCB)
0.10 0.00
= inactive
{0.02 Hz} 650.00 Hold time ð C0106
Deactivate automatic DC injection brake
(auto DBC):
at active lower frequency limitation
(C0239)
at operating mode C0014 = 5
7−30
C0106 Hold time for
automatic
DC−injection brake
(Auto DCB)
0.50 0.00
= auto DCB not active
{0.01 s} 999.00
=
Hold time, if DC−injection brake is activated
because the value falls below the setting
under C0019.
7−30
Activation
Via digital signal:
C0410/4 must be combined with digital signal source.
LOW level at the signal source activates quick stop
Level inversion with C0411 is possible
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