Siemens 420 manual Acceleration boost entered in %, Starting boost entered in %

0.0 %

0.0 %

0.0 %

Issue 07/04 3 Functions

P1311 =...

P1312 =...

V

Linear V/f

Boost voltage

Vmax

Validity range

Vn

g

e

ON

lt

(P0304)

a

v

t

o

OFF

t

u

p

t

 f

O

u

VConBoost,100

actual VBoost

f

)

V

a

/

0

t

m

l

=

r

0

P1310 active

o

0

N

3

1

VConBoost,50

P

1

(

t

0

0

fBoost,end

fn

f max

f

(P1316)

(P0310)

(P1082)

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 1st acceleration operation after the ON command, P1311 is effective each time that the drive accelerates or brakes.

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 =...

P1321 =...

P1322 =...

P1323 =...

P1324 =...

P1325 =...

Programmable V/f freq. 0.0 Hz coord. 1

Sets V/f coordinates (P1320/1321 to P1324/1325) to define V/f characteristic.

Programmable. V/f volt. 0.0 Hz coord. 1

Programmable V/f freq. 0.0 Hz coord. 2

Programmable V/f volt. 0.0 Hz coord. 2

Programmable U/f Freq. 0.0 Hz coord. 3

Programmable V/f volt. 0.0 Hz coord. 3

V
Vmax		Vmax = f(Vdc, Mmax)
r0071
Vn
P0304
P1325
P1323
P1321
P1310
f0		f1	f2			f3	fn	fmax	f
0 Hz	P1320		P1322		P1324		P0310	P1082
P1310[V] =		P1310[%] ⋅		r0395[%]		⋅ P0304[V]
		100[%]		100[%]

P1335 =...

P1338 =...

Slip compensation (entered in %)

Dynamically adjusts output frequency of inverter so that motor speed is kept constant independent of motor load.

Resonance damping gain V/f 0.00

Defines resonance damping gain for V/f.

MICROMASTER 420	Operating Instructions
6SE6400-5AA00-0BP0	79