Lenze L-force HighLine C 8400 Series Reference Manual page 556

8400 HighLine C | Reference manual
Basic drive functions (MCK)
Holding brake control
8.12.5 Behaviour in case of pulse inhibit
Setting the pulse inhibit causes a load-controlled coasting of the motor until the pulse is
enabled again. In the enabled controller, the pulse can be inhibited e.g. due to a DC
overvoltage, DC undervoltage or the "Safe torque off" request.
The brake response to pulse inhibit can be parameterised under C02582.

Stop!
For parameterising the response to pulse inhibit in C02582, the energy
conditions of the machine should be evaluated first.
The energy stored in the machine can be considerably higher than the
permissible switching energy and thus lead to the destruction of the brake if
applied directly!
Activate brake immediately when pulse is inhibited
If bit 1 is set to "0" in
the pulse is inhibited to avoid damage to the mechanical components.
Especially in the case of hoist drives, immediate engagement of the brake is absolutely
necessary for safety reasons if the pulse inhibit function of the drive controller has been
activated!

Danger!
This behaviour is valid in (semi) automatic operation when the bMBrakeRelease
input is set to FALSE.
When the bMBrakeRelease input is set to TRUE (supervisor operation) in
automatic mode, the brake is not applied at pulse inhibit!
Only activate brake below threshold for brake activation
If bit 1 and bit 3 are set to "1" in C02582, the brake remains released until the lower speed
threshold is reached to avoid an excessive wear of the brake.
 The braking action only takes places due to the friction in the load mechanics.
 Only when the motor speed has reached the threshold for brake activation, the brake
will be closed. Thus, the function depends on the signal of the speed encoder.
During uncritical operation (horizontal loading condition), delayed brake application may
be required to protect the brake in case of high centrifugal masses.
In the case of vertical motion (Bit 3 = 0), this function is not active due to safety-related
reasons.
Related topics:
Functional settings
Switching thresholds
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C02582 (Lenze setting), the brake will be immediately applied when
( 547)
( 548)
L
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011