FE FRENIC-Multi series, Instruction Manual

Page: 107 / 196

5-32
ue limiter and current limiter are very similar
activated concurrently, they may conflict each oth
The torq function each other. If both are
er and cause a hunting in the
st oncurrent ters.
F42
H68
tion
sy em. Avoid c activation of these limi
Control Mode Sele
Slip Compensa ction 1
1 (Operating conditions)
F42 specif od m
a f ntrol m
ies the control m e of the inverter to control a otor.
Dat or F42 Co ode
0 V/f co active ntrol with slip compensation
1 Dynamic torque vector control
2 V/f co ensation activ ntrol with slip comp e
3 V/f co e ntrol with optional PG interfac
4 Dynamic torque vector control with optional PG interface
„
V/ cont
In t er co e an e V/f
pattern spe ction c
„
Slip comp
App g o an i a rot otor
characteristics, decreasing th er’s slip compensation facility first
presumes e of th r t and raises the
outpu freque s r rot events the motor
fro cre ation d
That i , thi ffective eed
Th mp alue is f f
frequency) mpe and n for
braking).
H68 enable
s th cility accordi ing
co ns
f rol
trol, the invert
cified by fun
his con ntrols a motor by the voltag d frequency according to th
odes.
ensation
any load t lyin nduction motor causes ational slip due to the m
e motor rotation. The invert
e motor based on the moto
ate for the decrease in moto
the slip valu
ncy to compen
orque generated
ation. This pr t
m de asing the rot
e
ue to the slip.
s
e co
s facility is
ensation v
for improving the motor sp
specified by combination o
control accuracy.
unction codes P12 (Rated slip
, P09 (Slip co nsation gain for driving)) P11 (Slip compensation gai
s or disable
.
e slip compensation fa ng to the motor driv
nditio
Motor driving conditions Motor driving frequency zone
Data fo
H6
r
Accl/Decel Constant speed
Base frequency
or below
Above the base
frequency
8
Enable Enable Enable Enable 0
Disable Enable 1 Enable Enable
2 Enable Enable Enable Disable
3 Disable Enable Enable Disable
„
Dynamic torque vector control
To get t
applied
Selectin
he motor torque for the load
a
g slip compensation
sponse against external disturbances and
„
PG sp
This co
It uses t
trol the motor speed with
high accuracy.
maximal torque out of a motor, this control calculates the
nd uses it to optimize the voltage and current vector output.
this control automatically enables the auto torque boost and
function and disables auto energy saving operation. Using the PG feedback speed control at
same time, however, also disables the slip compensation function.
This control is effective for improving the system re
the motor speed control accuracy.
eed feedback control (PG interface)
rol is made available by mounting an optional pulse generator (PG) interface card.
he speed feedback from the PG on the motor shaft to con
nt