KEB COMBIVERT F5, Reference Manual, Page: 181 / 349

181
LC - Control Setting Parameters
The Control Mode determines whether the drive runs in open or closed-loop
operation and the type of pre-torque control.
Setting: Description: NUM
Open Loop V/Hz Open loop in Volts per Hertz operation
(induction motors only).
0
Open Loop
Vector Open loop operation , with sensorless motor
management (induction motors only); Slip
compensation and autoboost are active as
well as stationary hold at the end of run. This
setting is required when utilizing UPS Mode
Open Loop Easy Direction.
1
Closed Loop FOC Closed-loop operation with field oriented
control and internal pretorque, using
pretorque gains to eliminate rollback at brake
release without use of load weigher. Refer
to Section 5.12.2 for additional adjustment
information.
2
Closed Loop
Analog Pretorque Closed-loop operation with field oriented
control and an external pretorque input signal
via AN2+ and AN2- for use with analog load
weighing device.
3
Closed Loop
Digital Pretorque Closed-loop operation with field oriented
control and a digital pretorque value to
eliminate rollback.
The pretorque value will
depend on the US.04 Control Type. When
US.04 = Digital speed selection (0) Binary
speed selection (1) Absolute Analog Speed (2),
Bi-Polar Analog Speed(3), and Serial Binary
Speed DIN66019, Serv
.50 (6) a fixed pretorque
value is set with LC34 Digital Pretorque. Refer
to Section 6.8 for additional information on
LC34 Digital Pretorque. When US.04 = Serial
Speed DIN66019 Serv. 49 (4) , Serial Speed
DIN66019 Serv. 50 (5) the pretorque value
is set via FB.03 Field Bus Pretorque. Refer
to Section 6.15 for additional information on
FB.03 Field Bus Pretorque.
4
Closed Loop
Synth. Pretorque Closed-loop operation with field oriented
control and predictive synthetic pretorque,
using 90% of the calculated holding torque
from the previous run
to eliminate rollback
without use of load weigher. Refer to Section
5.12.5 for additional information.
5
Default = Closed Loop FOC (2)
6.8 LC - Control Setting Parameters
LC01
Control Mode