Siemens MICROMASTER 440 - Page 238

3 Functions Issue 10/06
MICROMASTER 440 Operating Instructions
238 6SE6400-5AW00-0BP0
Table 3-39 Voltage boost
Parameter Voltage boost Explanation
P1310 Constant
voltage boost
The voltage boost is effective over the complete
frequency range whereby the value continually
decreases at high frequencies.
Vmax
Vn
(P0304)
V
ContBoost,100
0
fn
(P0310)
f max
(P1082)
f
V
f
Boost,end
(P1316)
Boost
Linear V/f
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
ContBoost,50
P1311 Voltage boost when
accelerating- / braking
The voltage boost is only effective when accelerating
or braking.
Vmax
Vn
(P0304)
V
AccBoost,100
0
fn
(P0310)
fmax
(P1082)
f
V
f
Boost,end
(P1316)
V
AccBoost,50
Boost
Linear V/f
O
u
t
p
u
t
v
o
l
t
a
g
e
N
o
r
m
a
l
V
/
f
(
P
1
3
0
0
=
0
)
actual V
P1312 Voltage boost when starting The voltage boost is only effective when accelerating
for the first time (standstill)
Vmax
Vn
(P0304)
V
StartBoost,10
0
0
fn
(P0310)
fmax
(P1082)
f
V
f
Boost,end
(P1316)
V
StartBoost,50
Boost
Linear V/f
O
u
t
p
u
t
v
o
lt
a
g
e
N
o
r
m
a
l
V
/
f
(
P
1
3
0
0
=
0
)
actual V
NOTE
¾ Especially at low frequencies, the motor temperature is additionally increased
as a result of the voltage boost (the motor overheats) !
¾ The voltage value at 0 Hz is determined from the product of rated motor current
P0305, stator resistance P0350 and the appropriate parameters P1310 – P
1312.