Siemens 440 16 V/f control, Continuous boost entered in %, Acceleration boost entered in %

50.00 %

6 Commissioning Issue 10/06

6.4.16V/f control

P1300 =...

P1310 =...

P1311 =...

Control mode 0

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.

0V/f with linear

1V/f with FCC

2V/f with parabolic characteristic

3V/f with programmable characteristic (→ P1320 – P1325)

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.

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 %) 0.0 %

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.

	V	Boost-Spannung								Gültigkeitsbereich
	Vmax
	Vn							g	ON
	(P0304)						n		OFF	t
		V istBoost					u
							n
							n
						a			⏐f⏐
					s
						p
				s
				g			l
				n
V				a			a	)
	AccBoost,100		g
		s				rm 0
		u				o	=
		A			n					t
				/		0
				f		0
				U		3			P1311 aktiv
					1
VAccBoost,50				(P
									1	t
									0
	0								f
		fBoost,end						fn	fmax
		(P1316)						(P0310)	(P1082)

48	MICROMASTER 440
	Operating Instructions (Compact)