Lenze 8200 - Page 118

Commissioning
8200SHB01995-12
5.4.2.3 Optimise V/f-characteristic control with constant V
min
boost
(C014 = -2-/-3-)
Required codes
Code Name
Possible settings
IMPORTANT
C
o
d
e
N
a
m
e
Lenze Choice Info
I
M
P
O
R
T
A
N
T
C015
V/f-rated frequency Standard controllers
C
0
1
5
820X 50.00 30.0 {0.05 Hz} 960.00
821X/822X/
824X
50.00 7.50 {0.02 Hz} 960.00
C015 V/f-rated frequency 50.00 7.50 {0.02 Hz} 960.00 Variant “HVAC”
C016
V
min
setting
C
0
1
6
820X * 0.0 {0.2 %} 40.0 *depends on the unit
821X/822X/
824X
0.0 0.0 {0.2 %} 40.0
C021
Slip compensation Standard controllers
C
0
2
1
820X 0.0 0.0 {0.1 %} 12.0
821X/822X/
824X
0.0 0.0 {0.1 %} 20.0
C021 Slip compensation 0.0 -50.0 {0.1 %} 50.0 * depends on
t
h
e
u
n
i
t
Variant “HVAC”
C
0
2
1
S
l
i
p
c
o
m
p
e
n
s
a
t
i
o
n
0
.
0
-
5
0
.
0
{
0
.
1
%
}
5
0
.
0
*
d
e
p
e
n
d
s
o
n
the unit
V
a
r
i
a
n
t
“
H
V
A
C
”
C077* Gain I
max
controller 0.25 0.00 {0.01} 1.00
Variant “HVAC”
(
s
e
e
c
h
a
p
t
e
r
7
.
5
.
4
)
C078* Integral action time
I
max
controller
65 12 {1 ms} 9990
V
a
r
i
a
n
t
“
H
V
A
C
”
(see chapter 7.5.4)
Setting sequence
1.If necessary, select V/f
characteristic (C014).
2.Select V/f-rated frequency
(C015).
- The V/f-rated frequency determines the slope of the V/f characteristic and has considerable
influence on the current, torque and power performance of the motor.
- An internal mains voltage compensation compensates deviations in the mains during operation.
Therefore, they donot have to be considered for the setting of C015.
Adjustment
Calculate the frequency to be set under C015:
C015 [Hz] 
400 V
V
rmotor
[V]
ô f
dr
[Hz]
V
rmotor
Rated voltage to motor nameplate [V]
f
dr
Rated frequency to motor nameplate [Hz]
For standard motors with f
dr
= 50 Hz, the following settings result for C015:
Motor voltage
Motor connection C015
230/400 V Y 50 Hz
230/400 V D 87 Hz
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