Issue 10/06 3 Functions
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
111
3.5.7.16 V/f control
P1300 =...
Control mode
The control type is selected using this parameter. For the "V/f characteristic" control type,
the ratio between the frequency inverter output voltage and the frequency inverter output
frequency is defined.
0 V/f with linear
1 V/f with FCC
2 V/f with parabolic characteristic
3 V/f with programmable characteristic (
→ P1320 – P1325)
P1310 =...
Continuous boost (entered in %)
Voltage boost as a % relative to P0305 (rated motor current) and P0350 (stator resistance).
P1310 is valid for all V/f versions (refer to P1300). At low output frequencies, the effective
resistance values of the winding can no longer be neglected in order to maintain the motor
flux.
f
Linear V/f
OFF
ON
t
t
⏐f⏐
P1310 active
t0
1
Validity range
Vmax
Vn
(P0304)
V
ConBoost,100
0
fn
(P0310)
f max
(P1082)
V
f
Boost,end
(P1316)
Boost
O
u
t
p
u
t
v
o
l
t
a
g
e
actual V
N
o
r
m
a
l
V
/
f
(
P
1
3
0
0
=
0
)
V
ConBoost,50
Boost voltage
P1311 =...
Acceleration boost (entered in %)
Voltage boost for accelerating/braking as a % relative to P0305 and P0350. P1311 only
results in a voltage boost when ramping-up/ramp-down and generates an additional torque
for accelerating/braking. Contrary to parameter P1312, that is only active for the 1
st
acceleration operation after the ON command, P1311 is effective each time that the drive
accelerates or brakes.
Vmax
Vn
(P0304)
V
AccBoost,100
0
fn
(P0310)
fmax
(P1082)
f
V
f
Boost,end
(P1316)
V
AccBoost,50
Boost
U
/
f
n
o
r
m
a
l
(
P
1
3
0
0
=
0
)
V ist
A
u
s
g
a
n
g
s
s
p
a
n
n
u
n
g
OFF
ON
t
t
⏐f⏐
P1311 aktiv
t0
1
Boost-Spannung Gültigkeitsbereich
0
50.00 %
0.0 %
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