Lenze 9400 Manual de usuario descargar pdf (Pagina 540)

11 Basic drive functions

11.12 Brake control

540

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06

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• The brake is also activated automatically if a quick stop is activated in the drive, e.g. via the basic

function "Quick stop

" or as a response to a fault and also in case of a controller inhibit and pulse

inhibit. Behaviour in case of pulse inhibit

( 540)

• By setting the input BRK_bDisableStop to TRUE, an application of the brake at standstill or

during quick stop can be avoided; by this the drive remains position-controlled.

• After the brake has been activated automatically and the brake closing time has elapsed, the

controller inhibit is set automatically by the basic function "brake control".

• For the operation with a motor brake control module (mode 2) the desired polarity for

controlling the brake can be set in C02585

.

11.12.5.1 Behaviour in case of pulse inhibit

In case of pulse inhibit the brake is applied. This occurs according to the parameter setting in

C02582

either immediately (default setting) or delayed when the threshold set for brake activation

is fallen below, which can be selected to protect the brake if high centrifugal masses occur.

Activate the brake in any case

When C02582

= "0", the brake is immediately triggered to close to prevent the mechanics from

being damaged.

 Note!

Setting the pulse inhibit results causes the motor to coast down in a load-controlled

manner until pulse enable is carried out again.

Pulse inhibit can be set in the enabled controller, e.g. due to a DC overvoltage, DC

undervoltage or the "Safe torque off" request.

 Stop!

Before setting the parameters of C02582 it is important to assess the energy conditions

of the machine.

The amount of energy stored in the machine can exceed the permissible switching

energy of a motor holding brake at the time of pulse inhibit and can thus destroy the

brake when being applied!

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