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PROGRAMMING
INSTRUCTIONS
SINUS PENTA
339/452
38.
DC
BRAKING
MENU
3 8.1.
Overview
When the IFD or VTC control algorithm are used, DC current can be injected into the motor to stop it. DC current may
be automatically injected at stop and/or at start; DC current injection may also be controlled by the terminal board. All
relevant parameters are included in the DC BRAKING MENU. The intensity of the DC current injected is expressed as a
percentage of the rated current of the active motor.
38.1.1.
DC
B
RA K ING A T
S
T ART A ND
N
O N
-
CONDE NSING
F
UNCTIO N
To activate DC braking at start, set
C216
to [YES]. Braking occurs after sending a
START
command, with a speed
reference other than zero, before the acceleration ramp. A
START
command may be one of the following:
RUN
command or
REV
command sent via terminal board;
START
command from keypad, etc., depending on the preset
control mode. DC braking level and duration are set in the following parameters:
C220
Expressed as a percentage of the rated current of the controlled motor.
C218
Expressed in seconds.
Figure 51: DCB Hold and DCB at Start.
Output speed, holding and DC braking current when the DCB Hold and DCB at Start functions are active.