Lenze 8200 Frequency inverters - Manual (Page 153)

Configuration
8200SHB0199 7-16
7.5.2 Acceleration and deceleration times T
ir
, T
if
Code Name Possible settings IMPORTANT
Lenze Choice Info
C012 Acceleration time T
ir
820X 5.00 0.00 {0.05 s} 999.00
821X/822X/
824X
5.00 0.00 {0.02 s} 999.00
0.00 {0.02 s} 1300.00 HVAC only
C013 Deceleration time T
if
820X 5.00 0.00 {0.05 s} 999.00
821X/822X/
824X
5.00 0.00 {0.02 s} 999.00
0.00 {0.02 s} 1300.00 HVAC only
Function The acceleration and deceleration times determine the controller response after a setpoint change.
Adjustment - The acceleration and deceleration times refer to a change of the field frequency from 0 Hz to the
max. field frequency set under C011.
- Calculate the times T
ir
and T
if
, which must be set under C012 and C013.
- t
ir
and t
if
are the times desired for the change between f
d1
and f
d2
:
7
LU
W
LU
ô
I
GPD[
I
G
I
G
7
LI
W
LI
ô
I
GPD[
I
G
I
G
Important Under unfavourable operating conditions, too short acceleration and deceleration times can lead to
the deactivation of the controller with the indication of TRIP OC5. In these cases, the acceleration
and deceleration times should be short enough that the drive can follow the speed profile without
reaching I
max
of the controller.
Special features
820X The slope is adjustable between 0.095 Hz/s and 780 Hz/s.
f /Hz
d
f
dmax
d2
f
fd1
0
tir tif
Tir Tif
t
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