Current Control (Torque Control) - KEB COMBIVERT F5 MULTI Applications Manual

Functional Desription
Restrictions for controlled
operation
6.6.9 Current Control
(Torque Control)
KP current (dS.0)
KI current (dS.1)
No load voltage (dr.21)
DSM - EMK voltage constant
Chapter Section Page
6 6 12
The controlled operation is suited only as emergency operation for set-up or in
case of a faulty encoder.
Inverter operates according to adjusted current/frequency charancteristic (Chapt.
6.5).
Increased oscillating torque compared to controlled operation.
ru. 9 continues to indicate the actual speed measured by encoder 1.
Actual torque is internally set to zero, i.e. ru.12 always display the value 0. If
outputs are programmed to torque-dependent switching or if a torque signal is
given out over an analog output then the outputs behave like they do at actual
torque = 0.
dr.1 and dr.5 serve for the calculation of the pole pair number, for that reason they
must be adjusted correctly even in controlled operation.
All torque limits are without effect.
Speed and flux controller are not active.
No reference point run possible.
The current control consists of two standard PI-controllers.
ï Active current controller (torque controller) with
speed-dependent precontrol
ï Magnetizing current controller
The basic setting of the controller is done automatically through the motor adaption
Fr.10 (see Chapter 6.6.3).
If in the individual case a fine adjustment should be necessary the proportional
gain factor can be adjusted with dS.0. The integral factor is adjusted with dS.1. The
values apply for the active current controller as well as for the magnetizing controller.
The precontrol of the active current controller can be changed with dr.21 at F5-M
and with dr.26 at F5-S.
(dr.26)
Date Name: Basis
12.05.04 KEB COMBIVERT F5-M / S
Motor Data and Controller
© KEB Antriebstechnik, 2002
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