Parameters: 2-** Main Menu - Brakes - Danfoss VLT FC 102 Programming Manual

Parameter Descriptions
y-axis: I /I x 100 [%]
m m,n
Parameter 1-98 ATEX ETR interpol.
points freq.
[0]=5 Hz
3 3
[1]=15 Hz
[2]=25 Hz
[3]=50 Hz
Table 3.10 Interpolation Points
All operating points underneath the curve are allowed
continuously. Above the line, however, these are only
allowed for a limited time calculated as a function of the
overload. If a machine current is greater than 1.5 times the
rated current, shutdown is immediate.
1-99 ATEX ETR interpol points current
Only visible if parameter 1-90 Motor Thermal Protection is set to
[20] or [21].
Range:
Size
related
*
Use the 4 current points [A] from the motor nameplate.
Calculate the values as percentage of nominal motor
current, I /I
m m,n
Together with parameter 1-98 ATEX ETR interpol. points freq.,
these constitute a table (f [Hz],I [%]).
NOTICE
All frequency/current limit points from the motor
nameplate or motor datasheet must be programmed.

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:
50 %
*
70
Parameter 1-99 ATEX ETR
interpol points current
[0]=40%
[1]=80%
[2]=100%
[3]=100%
Function:
[0 - 100 %] Definition of thermal limitation
curve. For example, see
parameter 1-98 ATEX ETR interpol.
points freq.
x 100 [%], and enter into this array.
Function:
NOTICE
[ 0 - 160 %]
Parameter 2-00 DC Hold/
Preheat Current has no effect
when parameter 1-10 Motor
Construction=[1] PM, non-
salient SPM.
Danfoss A/S © 10/2019 All rights reserved.
®
VLT HVAC Drive FC 102
2-00 DC Hold/Preheat Current
Range:
2-01 DC Brake Current
Range:
50 %
*
Function:
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 set in
M,N
parameter 1-24 Motor Current. 100%
DC hold current corresponds to I
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.
Function:
NOTICE
[ 0 - 1000 %]
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 , see
M,N
parameter 1-24 Motor Current. 100%
DC brake 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.
.
M,N
M0010001