1 behaviour in case of pulse inhibit, 11 basic drive functions – Lenze 9400 User Manual
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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 "
" or as a response to a fault and also in case of a controller inhibit and pulse
inhibit.
Behaviour in case of pulse inhibit
• 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
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
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
= "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
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!