Lenze E82xVxxxKxxxxx - Manual (Page 279)

Function library
Behaviour in the event of mains switching, mains failure or controller inhibit
Controlled deceleration after mains failure/mains disconnection
10
l
279 EDS82EV903 EN 3.0
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0988
* DC−bus voltage
threshold for
DC−bus voltage
control 0 0
= changeover of
the parameter set
via DC−bus
voltage
deactivated {1 %} 200 l It is always changed over
between PAR1 and PAR2
l Changeover of the parameter
set via terminal, bus or PC is
not possible if C988 > 0!
^ 278
^ 294
Adjustment
Parameter Code Setting parameter set 1
(active in case of mains failure) Setting parameter set 2
(active during normal operation)
Switching threshold C0988 Set C0988 to approx. 10 % undervoltage:
AC 230 V ð C0988 = 75 ... 85 %
AC 400 V ð C0988 = 75 ... 85 %
AC 460 V ð C0988 = 75 ... 98 %
Terminal configuration C0410 Link C0410/4 (DCTRL1−QSP) to a digital
input (X3/E1 ... X3/E6). Set the terminal configuration for
normal operation.
Quick stop (QSP) active during
normal operation
Invert this input via C0411.
(Lenze setting = LOW−active) The digital input linked to DCTRL1−QSP
in parameter set 1 must also be linked
to DCTRL1−QSP (not inverted).
Interconnect the digital input.
No quick stop (QSP) during
normal operation
Do not interconnect this input. The digital input linked to DCTRL1−QSP
in parameter set 1 must not be used.
Deceleration time for quick stop
(QSP) C0105 Without external brake resistor
Select a value which ensures a
controlled deceleration of the motor to
a standstill after mains disconnection:
1. Set the same value as in parameter
set 2.
2. Switch off mains voltage.
– Parameter set 1 is activated.
– Observe whether the controller
reports an "Overvoltage OU"
during the controlled deceleration.
3. Repeat the controlled deceleration
and reduce C0105 until the
controller reports an "OU" in the
process.
4. Increase this value by approx. 20 %
as a final setting.
Set the deceleration time for QSP
required for the application.
With external brake resistor
Select an external brake resistor with
sufficient dimensioning.
1. Set C0105 as in parameter set 2.
2. Reduce C0105 until the desired
deceleration time is reached after
mains disconnection.