Lenze DDS Function library Drive Manuel d'utilisateur télécharger pdf (Page 92)

2.7.5 Process controller (L_PCTRL)

Function library LenzeDrive.lib

Special functions

2−82

LenzeDrive.lib EN 1.7

2.7.5.2 Ramp generator

The setpoint at nSet_a is led via a ramp generator with a linear characteristic

(100 %  16384  n

max

(C0011)).

This means that setpoint jumps at the input can be converted into a ramp.

100%

RFG−OUT

[%]

+ t

100%

w2 * w1

+ t

100%

w2 * w1

Fig. 2−78 Acceleration and deceleration times of the ramp generator

w1 ,w2 Change of the main setpoint, depending on t

or t

RFG−OUT Output of the ramp generator

 The ramps can be adjusted separately for acceleration and deceleration:

– Acceleration time t

with dnTir

– Deceleration time t

with dnTif

 Using bInAct_b = TRUE sets the ramp generator immediately to 0.

2.7.5.3 Value range of the output signal

 In the factory setting, the process controller has bipolar operation (bBiUnipolar = 0).

– The output signal is limited to ±100 % (±16384).

 Using bBiUnipolar = 1 the process controller has unipolar operation.

– The output signal is limited to 0 ... +100 % (0 ... 16384).

2.7.5.4 Evaluation of the output signal

 The limitation is followed by an evaluation of the output signal by nInflu_a.

– The calculation is done according to the following formula:

nOut_a +

(Valuesafterthelimitation) @ nInflu_a

16384

2.7.5.5 Deactivation of the process controller

 bInAct_b = TRUE deactivates the process controller. This means that

– nOut_a is set = 0.

– the I−component is set = 0.

– the ramp generator is set = 0.

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 102 103

Commentaires sur ces manuels

Pas de commentaire

Lenze DDS Function library Drive Manuel d'utilisateur Page 92

Commentaires sur ces manuels

Produits connexes et manuels pour Matériel Lenze DDS Function library Drive