January 2012 6.14 Synchronized Axes (Option 24) 785
There are two possibilities for starting the brake test. In both cases the
function described above is used to test the brakes of synchronized axes
simultaneously:
Automatic brake test:
The brake test takes place automatically during the power-up test of the
control, as soon as all servo drives of the respective synchronized axis have
been switched on.
Brake test via PLC module:
The brake test can be activated axis-specifically by the PLC program with
PLC module 9143. The slave drives of a synchronized axis are tested
simultaneously with the master. As a prerequisite for the brake test of a
synchronized axis, all servo drives of the axis must be switched on and the
brakes must be open.
Alternative behavior:
Testing the brakes of a synchronized axis successively
Additionally, you can activate a changed brake test sequence with
MP_autoBrakeTest. The setting MP_autoBrakeTest = with Master causes
the brake test to be performed together with the master axis. If
MP_autoBrakeTest = off, the servo drives of a synchronized axis are tested
successively rather than simultaneously. As a result, the brake test is
performed individually for all servo drives of a synchronized axis.
All brakes and servo drives of the synchronized axis are tested successively,
one after the other, at the specified test current. For the brakes and servo
drives that are not part of the momentary test, but are configured as
connected to the servo drive to be tested, the current is set during the test so
that the servo drive is not moved. The brakes of these servo drives must be
open for this purpose. This way, each time only the brake of an individual servo
drive is tested, without the other servo drives or brakes of the synchronized
axis having an effect on the test.
To be able to use this brake test sequence, the individual brakes of the
synchronized axis must not be combined. It must be possible to control the
brakes individually.
Settings in the configuration editor MP number
Axes
ParameterSets
[Key name of the parameter set]
CfgAxisCoupling
autoBrakeTest 402316
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