Danfoss VLT HVAC Drive FC 102, Programming Manual, Page: 56 / 250

3.4 Parameters: 2-** Main Menu - Brakes
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
%]
NOTICE
Parameter 2-00 DC Hold/Preheat Current has
no effect when parameter 1-10 Motor
Construction = [1] PM, non-salient SPM .
NOTICE
The maximum value depends on the rated
motor current.
Avoid 100% current for too long. It may
damage the motor.
Enter a value for holding current as a percentage
of the rated motor current I
M,N
set in
parameter 1-24 Motor Current . 100% DC hold
current corresponds to I
M,N
.
This parameter holds the motor (holding torque)
or preheats the motor.
This parameter is active if
[1] DC hold/Motor
Preheat is selected in parameter 1-80 Function at
Stop .
2-01 DC Brake Current
Range: Function:
50
%
*
[ 0 -
1000
%]
NOTICE
The maximum value depends on the rated
motor current. Avoid 100 % current for too
long. It may damage the motor.
Enter a value for current as a percentage of the
rated motor current I
M,N
, see parameter 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
•
Parameter 2-03 DC Brake Cut In Speed
[RPM]
.
•
Parameter 2-04 DC Brake Cut In Speed
[Hz]
; 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
parameter 2-02 DC Braking Time .
2-02 DC Braking Time
Range: Function:
10 s
*
[0 - 60 s] Set the duration of the DC brake current set in
parameter 2-01 DC Brake Current , once
activated.
2-03 DC Brake Cut In Speed [RPM]
Range: Function:
Size
related
*
[ 0 - 0
RPM]
NOTICE
Parameter 2-03 DC Brake Cut In Speed
[RPM]
has no effect when
parameter 1-10 Motor
Construction
=[1] PM, non-salient
SPM.
Set the DC brake cut-in speed for
activation of the DC braking current set in
parameter 2-01 DC Brake Current
, upon a
stop command.
When parameter 1-10 Motor Construction is
set to [1] PM non-salient SPM , this value is
limited to 0 rpm (OFF)
2-04 DC Brake Cut In Speed [Hz]
Range: Function:
Size
related
*
[ 0 -
0.0 Hz]
NOTICE
Parameter 2-04 DC Brake Cut In Speed
[Hz]
has no effect when
parameter 1-10 Motor
Construction
=[1] PM, non-salient
SPM.
This parameter is for setting the DC brake
cut-in speed at which the DC braking
current (
parameter 2-01 DC Brake Current ) is
to be active in connection with a stop
command.
2-06 Parking Current
Range: Function:
50
%
*
[ 0 -
1000 %]
NOTICE
Parameter 2-06 Parking Current and
parameter 2-07 Parking Time : Only active
if PM motor construction is selected in
parameter 1-10 Motor Construction .
Set current as percentage of rated motor
current,
parameter 1-24 Motor Current . Active in
connection with parameter 1-73 Flying Start . The
parking current is active during the time period
set in
parameter 2-07 Parking Time .
Parameter Descriptions
VLT
®
HVAC Drive FC 102
54 Danfoss A/S © 03/2015 All rights reserved. MG11CE02
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