Lenze I95AE240F User Manual

13.6.5.7 Imax controller
Dening the behaviour at the current limit (Imax controller)
The maximum output current or the current limit is dened by the 0x6073 "ma
x. current"
parameter. In case of the V/f characterisc control, an Imax controller is implemented for
complying with this limit. If the motor current exceeds the set maximum current, the Imax
controller is acvated.
•
The Ima
x controller changes the rotang eld frequency so that the motor current does
not e
xceed the current limit. In motor mode, the frequency is reduced and in generator
mode it is increased.
•
The gain and reset me of the Imax controller can be parameterised.
Opmising the Imax controller
The automac calculaon serves to determine starng parameters of the Imax controller
which are sucient for many applicaons. Thus, an opmisaon is not required for most of
the applicaons.
The automac calculaon is made via the parameter 0x2822:019 = 1.
The parameters of the Imax controller must be adapted if
•
a po
wer control is implemented with great moments of inera.
Recommendaon:
Step 1: increase reset me in 40x2B08:002
St
ep 2: reduce gain in 40x2B08:001
•
vibraons occur with V/f characterisc control during the operaon of the Imax controller.
Recommendaon:
Step 1: increase reset me in 40x2B08:002
St
ep 2: reduce gain in 40x2B08:001
•
overcurrent errors occur due to load impulses or too high acceleraon/deceleraon
ramps.
Recommendaon:
Step 1: reduce reset me in 40x2B08:001
St
ep 2: increase gain in 40x2B08:002
Parameter
Address Name / seng range / [default seng] Info
0x2B08:001 V/f Imax controller: Gain
0.000 ... [0.001] ... 1000.000
Hz/A
Gain factor Vp of the Imax controller.
0x2B08:002 V/f Imax controller: Reset me
1.0 ... [100.0] ... 2000.0 ms
Reset me Ti of the Imax controller.
13.6.5.8 Flying restart controller
P
arameter
Address Name / seng range / [default seng] Info
0x2BA1 Flying restart circuit
0 ... [15] ... 100 %
Conguring the motor control
Opons for opmising the control loops
Mot
or control sengs
248

Lenze I95AE240F Specifications

General

Brand	Lenze
Model	I95AE240F
Category	Inverter
Language	English