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Function library

Function blocks

3.2.40 Mains failure control (MFAIL)

3−118

EDSVS9332S−EXT EN 2.0

Commissioning

The commissioning should be carried out with motors without load.

1. The drive can be started with a LOW−HIGH edge at X5/E5.

2. Set the acceleration time Tir:

– Set speed setpoint to 100%, operate controller with maximum speed.

– Inhibit controller via terminal X5/28 (you can also use any other controller inhibit source,

CINH) and measure deceleration time until standstill.

– Set approx. 1/10 of the deceleration time in C0982.

3. Setting the retrigger time

l In case of mains failure detection by detecting the DC bus voltage level:

– Set measured deceleration time from item 2. under C0983.

l In case of mains failure detection via an external system (e.g. supply module 934X):

– Under C0983, set the time in which the drive is to be continued to be braked in a controlled

way for short−term mains recovery.

4. Switch off supply voltage (mains or DC bus).

The oscilloscope should display the following characteristic:

t1 t2

Abschaltschwelle LU

Abschaltschwelle OU

Einschaltschwelle Bremseinheit

nsprechschwelle

CMP2-OUT

MFAIL-DC-SET

Fig. 3−103 Schematic representation with activated mains failure control (ideal characteristic)

t1 Mains failure

t2 Zero speed reached

1 2 ... 165 166 167 168 169 170 171 172 173 174 175 ... 263 264

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Lenze EVS9332xS Manual de usuario Pagina 170