Lenze 8200 Frequency inverters - Manual (Page 109)

Commissioning
8200SHB0199 5-4
5.3.2 Setting of acceleration and deceleration times (T
ir
, T
if
)
Code Name Possible settings IMPORTANT
Lenze Choice Info
C012 Acceleration time Variant “Standard”
820X 5.00 0.00 {0.05 s} 999.00 T
ir
821X/822X/
824X
5.00 0.00 {0.02 s} 999.00
C013 Deceleration time Variant “Standard”
820X 5.00 0.00 {0.05 s} 999.00 T
ir
821X/822X/
824X
5.00 0.00 {0.02 s} 999.00
C012 Acceleration time 5.00 0.00 {0.02 s} 1300.00 T
ir
Variant “HVAC”
C013 Deceleration time 5.00 0.00 {0.02 s} 1300.00 T
if
Variant “HVAC”
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
Å I
G
7
LI
 W
LI
ô
I
GPD[
I
G
Å I
G
Important Under unfavourable operating conditions, too short acceleration and deceleration times can lead to
the deactivation of the controller under overload with the indication of TRIP OC5. In these cases, the
acceleration and deceleration times should be set such that the drive can follow the speed profile
without reaching I
max
of the controller.
f /Hz
d
f
dmax
d2
f
fd1
0
tir tif
Tir Tif
t
FIG 5-1 Acceleration and deceleration times
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