Lenze DDS Function library 9300 Servo Manuel d'utilisateur télécharger pdf (Page 21)

Function block library Lenze9300Servo.lib

Special functions

2.1.2 Supply−failure control (L_MFAIL)

2−11

Lenze9300Servo.lib EN 1.1

Parameterization of the supply−failure control

The parameters to be set are strongly dependent on the motor used, the inertia of the driven machine

and the drive configuration (single drive, drive network, master−slave operation, etc.). This function

must therefore be adapted to the individual application in every case.

The following specifications refer to Chapter 2.1.2.1

Important settings prior to the initial commissioning:

Stop!

With internal voltage supply to the terminals, terminal X6/63 is used as a voltage source for external

potentiometers. In this case, measure across terminals +U

, −U

Note!

To perform the measurements, a new download that includes the changes must be made.

1. Measure the DC−bus voltage with an oscilloscope (channel 1)

– with a suitable voltage divider across the terminals +U

, −U

– by providing the DC bus voltage at terminal X6/62, for instance. To do this, connect the

system variable MCTRL_nDCVolt_a with the system variable AOUT2_nOut_a .

2. Measure the speed with an oscilloscope (channel 2)

– by supplying the speed on terminal X6/62, for instance, (standard setting). To do this,

connect the system variable MCTRL_nNAct_a with the system variable AOUT1_nOut_a .

3. Enter, in C0472/20 ( FCODE_nC0472_20_a ) the threshold for the supply−failure detection.

The entry depends on the setting in C0173 (adjsutment of the U

−threshold).

– Set the threshold approx. 50 V above the switch−off threshold LU

(example for C0173 = 0.1; C0472/20 = 48 % = 480 V).

Supply voltage range C0173 = Switch−off

threshold LU

Switch−on

threshold LU

Switch−off

threshold OU

Switch−on

threshold OU

< 400 V 0 285 V 430 V 770 V 755 V

400 V 1 285 V 430 V 770 V 755 V

400 V ... 460 V 2 328 V 473 V 770 V 755 V

480 V without brake chopper 3 342 V 487 V 770 V 755 V

Operation with brake chopper (up to

480 V)

4 342 V 487 V 800 V 785 V

4. Set the setpoint to which the DC bus voltage is to be controlled:

– Set the setpoint to approx. 700 V (C0472/18 = 70%).

Stop!

This setpoint must be below the threshold of any brake unit which may be connected.If a connected

brake unit is activated, the drive is braked with the maximum possible torque (I

max

). The desired

operating behaviour is lost.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29

Commentaires sur ces manuels

Pas de commentaire

Lenze DDS Function library 9300 Servo Manuel d'utilisateur Page 21

Commentaires sur ces manuels

Produits connexes et manuels pour Matériel Lenze DDS Function library 9300 Servo