Acceleration, deceleration, braking, stopping
10
Function library
10.7
10.7.2
L
10.7-4
EDS82EV903-1.0-11/2002
10.7.2 Quick stop
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: c).
Quick stop acts on
l the main setpoint (NSET1-N1, NSET1-N2).
l the additional setpoint (PCTRL1-NADD).
l 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 standst ill 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 a lso 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).
^ 10.7-4
C0019 Threshold for
automatic
DC-injection brake
(Auto DCB)
0.10 0.00
= not active
{0.02 Hz} 650.00 Holding time ð C0106
Deactivate the automatic DC injection brake
when the minimum frequency limit C0239
is active
^ 10.7-6
C0106 Holding time for
automatic
DC-injection brake
(Auto DCB)
0.50 0.00
= auto DCB not active
{0.01 s} 999.00
=
∞
Holding time, if DC-injection brake is
activated because the value falls below t he
setting under C0019.
^ 10.7-6
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