6
6
6
15
KEB COMBIVERT F5-M / S
Name: Basis
12.05.04
Section
Page
Date
©
KEB Antriebstechnik, 2002
All Rights reserved
Chapter
Functional Desription
Motor Data and Controller
6.6.12 Torque Control
With the torque control it is regulated onto two controlled variables ñ torque and
speed. Parameter cS.0 must be adjusted to value Ñ5ì in order to activate the torque
control (see Chapter 6.6.8). The torque control is available only at switched off
Posi-/Synchronous module (PS.0 = 0). If the actual torque becomes larger in torque-
controlled operation than the setpoint speed, the automatic control switches
automatically into the speed-controlled operation.
Torque reference source (cS.15)
Parameter cS.15 determines the torque setpoint source. Following possibilities are
selectable:
Value Source
0
Analog adjustment via REF-input (see Chapt. 6.2)
1
Analog adjustment via AUX-input (see Chapt. 6.2)
2
Digital absolute (cS.19)
3
Digital precental (cS.18)
4
Motorpoti
5
External PID-output (technology controller)
6.6.12 Torque control at cS.0 = Ñ5ì
0
1
2
3
4
5
cS.15
cS.19
cS.16
ru.49
1
0
abs.
abs.
Speed control with
sign from ru.49
0...100 % REF
0...100 % AUX
100 % absolute
0...100 % percental (cS.18)
0...100 % Motorpoti
0...100 % ext. PID
1 -> 0 at n_ist > n_set
0 -> 1 if speed controller within the limitation
The absolute torque setpoint value is adjusted with cS.19. The value can be changed
by the torque setpoint source defined with cS.15 in accordance to the formula
specified below. cS.19 is limited to dr.15 (max. torque FI) and dr.33 (three-phase
a.c.motor max. torque) (dr.15 > dr.33 > cS.19).
The setpoint torque at the torque control (ru.49) is calculated as follows:
adjsuted percentage
ru.49 = M
= cS.19 x
100%
Absolute torque reference
(cS.19)
Reference torque (ru.49)
Torque acceleration time (cS.16)
With cS.16 the ramp time for the torque control is determined within the range of
0...60000 ms.
Torque reference setting %
(cS.18)
With cS.18 the percentage setpoint value with reference to cS.19 can be directly
preadjusted.
