Siemens MICROMASTER 420, Operating Instructions Manual

Page: 79 / 190

Issue 07/04 3 Functions
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
79
f
Linear V/f
OFF
ON
t
t

f

P1310 active
t 0
1
Validity range
Vmax
Vn
(P0304)
V
ConBoost,100
0
fn
(P0310)
f max
(P1082)
V
f
Boost,end
(P1316)
Boost
Ou
tpu
t v
olt
ag
e
actual V
No
rm
al
V/
f
(P
13
00
=
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.
P1312 =...
Starting boost (entered in %)
Voltage boost when starting (after an ON command) when using the linear or square-law
V/f characteristic as a % relative to P0305 (rated motor current) or P0350 (stator
resistance). The voltage boost remains active until
1)
the setpoint is reached for the first time and
2) the setpoint is reduced to a value that is less than the instantaneous ramp-function
generator output.
P1320 =...
Programmable V/f freq.
coord. 1
Sets V/f coordinates
(P1320/1321 to P1324/1325) to
define V/f characteristic.
P1321 =...
Programmable. V/f volt.
coord. 1
P1322 =...
Programmable V/f freq.
coord. 2
P1323 =...
Programmable V/f volt.
coord. 2
P1324 =...
Programmable U/f Freq.
coord. 3
P1325 =...
Programmable V/f volt.
coord. 3
] P0304[V
100[%]
r0395[%]
100[%]
P1310[%]
P1310[V]
⋅ ⋅ =
V
P1325
f1
P1320
f
max
P1082
V
max
r0071
V
n
P0304
P1323
P1321
P1310
f0
0 Hz
f2
P1322
f3
P1324
f
n
P0310
f
V
max
= f(V
dc
, M
max
)
P1335 =...
Slip compensation (entered in %)
Dynamically adjusts output frequency of inverter so that motor speed is kept constant
independent of motor load.
P1338 =...
Resonance damping gain V/f
Defines resonance damping gain for V/f.
0.0 %
0.0 %
0.0 %
0.0 Hz
0.0 Hz
0.0 Hz
0.0 Hz
0.0 Hz
0.0 Hz
0.00