Technical information

3.4 Main Menu - Brakes - Group 2
3.4.1 2-0* DC-Brakes
Parameter group for configuring the DC brake and DC
hold functions.
2-00 DC Hold/Preheat Current
Range: Function:
50 %* [ 0 -
160. %]
Enter a value for holding current as a
percentage of the rated motor current I
M,N
set
in 1-24 Motor Current. 100% DC holding
current corresponds to I
M,N
.
This parameter holds the motor (holding
torque) or pre-heats the motor.
This parameter is active if [1] DC hold/Preheat
is selected in 1-80 Function at Stop.
NOTE
2-00 DC Hold/Preheat Current will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
NOTE
The maximum value depends on the rated motor current.
Avoid 100 % current for too long. It may damage the
motor.
2-01 DC Brake Current
Range: Function:
50.0
%*
[ 0 -
1000. %]
Enter a value for current as a percentage of
the rated motor current I
M,N
, see 1-24 Motor
Current. 100% DC braking current corresponds
to I
M,N
.
DC brake current is applied on a stop
command, when the speed is lower than the
limit set in 2-03 DC Brake Cut In Speed [RPM];
when the DC Brake Inverse function is active;
or via the serial communication port. The
braking current is active during the time
period set in 2-02 DC Braking Time.
NOTE
The maximum value depends on the rated motor current.
Avoid 100 % current for too long. It may damage the
motor.
2-02 DC Braking Time
Range: Function:
10.0 s* [0.0 - 60.0 s] Set the duration of the DC braking
current set in 2-01 DC Brake Current, once
activated.
2-03 DC Brake Cut In Speed [RPM]
Range: Function:
Size related* [ 0 - 0.
RPM]
Set the DC brake cut-in speed for
activation of the DC braking current
set in 2-01 DC Brake Current, upon a
stop command.
When 1-10 Motor Construction is set to
[1] PM non salient SPM this value is
limited to 0 rpm (OFF)
NOTE
2-03 DC Brake Cut In Speed [RPM] will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
2-04 DC Brake Cut In Speed [Hz]
Range: Function:
Size related* [ 0.0 - 0.0
Hz]
This parameter is for setting the DC
brake cut in speed at which the DC
braking current (2-01 DC Brake
Current) is to be active, in connection
with a stop command.
NOTE
will not have effect when 1-10 Motor Construction = [1] PM,
non salient SPM.
2-06 Parking Current
Range: Function:
50 %* [ 0 - 1000.
%]
Set current as percentage of rated motor
current, 1-24 Motor Current. Active when
1-70 PM Start Mode is set to [1] Parking. The
parking current is active during the time
period set in 2-07 Parking Time.
2-07 Parking Time
Range: Function:
3.0 s* [0.1 - 60.0 s] Set the duration of the parking current
time set in 2-06 Parking Current. Active
when 1-70 PM Start Mode is set to [1]
Parking
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG11CD02 - VLT
®
is a registered Danfoss trademark 49
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