Compensation of moment of inertia dv/dt injection

Description

Value range [Unit] Steps

No. indices Factory setting Type

See Change (Access / Status)

10.30 Compensation of moment of inertia (dv/dt injection)

(see also Section 8, Sheet G153 of Operating Instructions 6RX1700-0AD**)

	P540	Acceleration time
	FDS	The acceleration time is the time that would be needed to accelerate the
	FDS	drive from 0% to 100% of maximum speed (with no friction) at 100%

	(G153)	converter rated DC current (armature) and 100% rated motor field current
	(G153)	(i.e. 100% flux). It is a measure of the moment of inertia on the motor shaft.

		This parameter is set automatically during the optimization run for friction
		and moment of inertia compensation (P051=28).

	P541	P gain of acceleration
	FDS	Proportional gain for "SAD-dependent acceleration" function (see also
	(G153)	parameter P543)

	P542	Time difference for dy/dt of ramp-function generator
	FDS	Ramp-function generator:
	FDS	Setting of dt for the output of dy/dt at a connector, i.e. at K0191, the change

	(G136)	in the output quantity of the ramp-function generator (K0190) is output within
	(G136)	the period set in P542
		the period set in P542

Example: - The ramp-function generator is currently ramping up with a ramp-up time of P311=5s, i.e. a ramp-up operation from y=0% to y=100% takes 5s.

-A time difference dt of P542=2s is set.

-⇒ A dy/dt of 40% appears at connector K0191 since the dy within the set dt of 2 s equals (2s/5s)*100%..

	(see also parameter P330)

P543	Threshold for SAD-dependent acceleration
FDS	With respect to the SAD-dependent acceleration function, only the
FDS	component of the speed controller setpoint/actual value difference which

(G153)	has an absolute value in excess of the threshold set in this parameter is
(G153)	switched through (see also parameter P541).
	switched through (see also parameter P541).
	Output (value to be multiplied by P541)
	199.99%
	negative
	threshold	Input (setp./act. val. diff.)
	-200.00% (-P543)	Input (setp./act. val. diff.)
	positive	199.99%
	threshold
	(P543)
	-200.00%

P546	Filter time for compensation of moment of inertia
FDS
(G153)

0.00to 650.00

[s]

0.01s

0.00to 650.00

0.01to 300.00

[s]

0.01s

0.00to 100.00

[%]

0.01% of maximum speed

0 to 10000 [ms] 1ms

SIEMENS Energy & Automation	10-55
SIMOREG DC Master Base Drive Panel Operating Instructions