Lenze 8200 Frequency inverters - Manual (Page 157)

Configuration
8200SHB0199 7-20
820X
821X
822X
824X V/f-characteristic control with V
min
boost
Select the classical V/f-control with constant V
min
boost to operate the following drives:
- Multi-motor applications (several motors connected to one controller)
- Three-phase AC reluctance motors
- Three-phase sliding rotor motors
- Operation with special motors with assigned frequency-voltage characteristic
- Positioning and infeed drives with high dynamic response
- Hoists
C014 = -2-
Linear characteristic C014 = -3-
Square characteristic
(e.g. for pumps, fans)
1 0 0 %
0
0 1
f d
f d r
m i n
0
0 1
f d
f d r
m i n
1 0 0 %
V
V
V o u t V o u t
821X
822X
824X Motor-current control
Compared with the V/f-characteristic control the motor-current control offers considerably higher
torque and reduced current consumption during idle running. Select the motor-current control for
operation with the following drives:
- Single drives with extremely variable loads
- Single drives with heavy start conditions
- Multi-motor applications with the same motors and the same load distribution
- Sensorless speed control of standard three-phase AC motors together with slip compensation
(C021)
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