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Menu 12
Commander SK Advanced User Guide 161
Issue Number: 9 www.controltechniques.com
10.13.1 Brake control function
The brake control function can be used to control an electro-mechanical brake via the drive digital I/O.
This parameter should be used as a source for a digital output to control an electro-mechanical brake. This parameter is one to release the brake and
zero to apply the brake. Digital I/O can be automatically configured to use this parameter as a source (see Pr 12.41).
Action will only occur if the drive is inactive. If the drive is active the parameter will return to its pre altered value on exit from edit mode or drive reset.
0diS
The brake controller is disabled and no other drive parameters are affected by the brake controller. When this parameter is changed from a non-zero
value to zero Pr 2.03 is set to zero.
1rEL
The brake controller is enabled with I/O set up to control the brake via the relay output. Drive ok is re-routed to digital I/O.
2 d IO
The brake controller is enabled with I/O set up to control the brake via digital I/O.
3 USEr
The brake controller is enabled, but no parameters are set to select the brake output.
The following table shows the automatic parameter changes that occur to set up digital I/O and the relay output after exit from edit mode or drive reset
when Pr 12.41 has been changed.
The brake control functions are provided to allow well co-ordinated operation of an external brake with the drive. While both hardware and
software are designed to high standards of quality and robustness, they are not intended for use as safety functions, i.e. where a fault or
failure would result in a risk of injury. In any application where the incorrect operation of the brake release mechanism could result in injury,
independent protection devices of proven integrity must also be incorporated.
12.40 Brake release indicator
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range OFF(0) or On(1)
Update rate 21 ms
12.41 Brake controller enable {12}
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111
Range diS(0), rEL(1), d IO(2), USEr(3)
Default diS(0)
Update rate Actioned on exit of edit mode or drive reset
Old value of
Pr 12.41
New value of
Pr 12.41
Pr 8.11 Pr 8.21 Pr 8.31 Pr 8.17 Pr 8.27 Pr 8.41
Any 1
Drive ok output Brake release output
3
OFF Pr 10.01 1OFFPr 12.40
Not 1 2
Brake release output
8
OFF Pr 12.40 1 No change No change
12
Brake release output Drive ok output
8
OFF Pr 12.40 1OFFPr 10.01
10 or 3
Zero speed output Drive ok output
0
OFF Pr 10.03 1OFFPr 10.01
20 or 3
Zero speed output
0
OFF Pr 10.03 1 No change No change
Ensure that the brake controller is setup correctly before the electro-mechanical brake circuit is connected to the drive. Disconnect the
electro-mechanical brake circuit before a default is performed.
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