Vacon apfiff09 marine, Applications Manual, Page: 155 / 310

154
• VACON®
apfiff09 marine
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
7.5.1.1 Brake Control
The mechanical brake control has two parts that need to be synchronically controlled. The first part
is the
mechanical brake release and the second is the speed reference release . Whole brake control
logic is explained in chapter 6.15 Brake Control.
Conditions to open the brake:
RS
SET
RESET
AND
IN 1
IN 2
IN 3 Running
Flux Ready
SEL
G
IN 0
IN 1
CL Control
GE
IN 1
IN 2
ABS
IN FreqRampOut
P BrakeOffFrqLimOL
P BrakeOffFrqLimCL
OR
IN 1
IN 2
IN 3
LT
IN 1
IN 2
R Motor Current
P BrakeOnOffCurLim
Running
NOT
IN
OR
IN 1
IN 2
IN 3
AND
IN 1
IN 2
IN 3
Running
NOT
IN
Fault Active
AND
IN 1
IN 2
IN 3
Run Request
NOT
IN
ABS
IN FreqRampOut
SEL
G
IN 0
IN 1
Reverse Direction
LE
IN 1
IN 2 P BrakeOnF
P BrakeOnFreqLim -
AND
IN 1
IN 2
IN 3
Run Request
NOT
IN
FreqRampOut
EQ
IN 1
IN 2
0
PreBrakeOpenCommand
The final brake open command: It is possible that in a Master/Follower system the master drive
opens the brake. Also an overriding system may do this without any control from the drive using
AucControlWord1.B7. During identification run the brake will not open.
ExtBrakeCtrl
ExtBrakeCtrl,Inv
NOT
IN
AuxControlWord 1.B7
NOT
IN Identification Run
MasterBrakeOpenCommand
AND
IN 1
IN 2
OR
IN 1
IN 2
OR
IN 1
IN 2
PreBrakeOpenCommand
Relay state when control unit is not powered
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