Lust CDA3000 - 67 BR-DC Braking

Application Manual CDA3000
5-117
5 Software functions
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A
DE
EN
FR
5.5.8 _67 BR-DC
braking
IDC =Output direct current of CDA3000
Figure 5.42 DC braking with demagnetization time BRTOF and braking time
BRTMX
For demagnetization purposes no current is applied to the motor in the
timeBRTOF,sothefieldinthemotorcanbesafelyremoved.Thenforthe
time BRDCT the direct current BRDCC is injected into the motor and the
motor is braked without energy feedback into the inverter module. The
motor converts the braking energy directly into heat.
Note: If too short a demagnetization time is chosen, the residual
magnetization of the motor may result in error shutdowns in
the inverter module.
Function Effect
• Feed of a direct current into
the motor, causing it to
brake.
• No braking resistor is
required to stop motors.
0
f [Hz]
I
DC
[A]
0
BRDCC
0
1
Start
t
t
t
BRTOF
BRTMX