Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010 L 449
8400 HighLine | Parameter setting & configuration
Basic drive functions (MCK)
Holding brake control
8.12.3 Process when brake is released
1. The controller inhibit is deactivated.
2. The magnetic field required for the holding torque is created in the motor (is already
available when a synchronous machine is used).
3. For brake release, the bBRKReleaseOut output is set to TRUE.
4. After the brake opening time has elapsed:
–The bBRKReleased output is set to TRUE.
– The drive synchronises to the already accelerated speed setpoint.
Related topics:
Torque precontrol during starting
( 451)
8.12.4 Process when brake is closed
1. The motor is decelerated by the "Quick stop" function or by "DC-injection braking",
either directly requested by the user or as response to an error.
2. If the speed setpoint and the actual speed have fallen below the lower speed threshold
or only the speed setpoint has fallen below the lower speed threshold and the actual
value monitoring time has expired:
–The bBRKReleaseOut output is set to FALSE for closing the brake.
– The elapse of the brake closing time starts.
3. After the brake closing time has elapsed:
–The bBRKReleased output is reset to FALSE.
– Controller inhibit is set.
8.12.5 Response to 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 under 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!
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