Lenze EVF9383 - Manual (Page 267)

Configuration
Function blocks
Internal motor control with vector control (MCTRL2)
8
8.2
8.2.7
l
8.2−51 EDSVF9383V EN 7.1−04/2012
199 %
M
100 %
80 %
n
N
2 n
N
3 n
N
n
0
1
2
9300vec153
Fig. 8.2−20 Torque characteristics when being evaluated with C0898
0 "Internal limit characteristic" when C0898 = 1 and MCTRL−HI−M−LIM = 199 %
Boost of the upper torque limit when MCTRL−HI−M−LIM = 199 % and
C0898 = 0
1 Torque characteristic when C0898 = 1 and MCTRL−HI−M−LIM = 80 %
2 Torque characteristic when C0898 = 0 and MCTRL−HI−M−LIM = 80 %
Evaluating torque limits using C0898
Code C0898 serves to evaluate the defined torque limits at the inputs
MCTRL−LO−M−LIM and MCTRL−HI−M−LIM using the function 1/f
act
. This serves
to reduce the torque.
Selection Code Description
Evaluation of the torque
limit in the field
weakening range C0898 = 0 Lenze setting
The input signals at MCTRL−LO−M−LIM and
MCTRL−HI−M−LIM are evaluated with 1/f
act
.
C0898 = 1 An "internal limit characteristic" which corresponds
to a maximum torque limit of ±199,99 % is evaluated
with 1/f
act
.
l The torque remains constant until the limit
characteristic is reached. This requires that the
controller provides a sufficient amount of current
and the motor is stable within the required speed
range.
l The input signals at MCTRL−LO−M−LIM and
MCTRL−HI−M−LIM are not evaluated with 1/f
act
.