Lenze DDS Function library 9300 Servo Instrukcja Użytkownika Pobierz pdf (Strona 14)

Function block library Lenze9300Servo.lib

Special functions

2.1.1 Holding brake (L_BRK)

2−4

Lenze9300Servo.lib EN 1.1

2.1.1.3 Set controller inhibit

The controller inhhibit can, for instance, be set in the event of a fault (LU, OU).

wRelease

Time

DCTRL_bCInh_b

MCTRL_nNAct_a

bOut_b

|nNx_a|

bQSP_b

MCTRL_MAct_a

MCTRL_MAct_a = nMSet

BMStore_b

Abb. 2−4 Operate brake by controller inhibit

Functional sequence

1. By setting the controller inhibit (DCTRL_bCInh_b = TRUE) bOut_b switches immediately =

TRUE.

– The drive is then braked by its mechanical brake.

2. If the controller inhibit (DCTRL_bCInh_b = FALSE) before the actual speed falls below the

threshold at nNx_a, then bOut_b = FALSE, immediately.

– The drive synchronizes itself to the momentary speed and follows its setpoint.

– If the value falls below the threshold, the drive starts.

(^ 2−3)

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Lenze DDS Function library 9300 Servo Instrukcja Użytkownika Strona 14