Parameters: 2-** Brakes - Danfoss VLT AutomationDrive FC 301 Programming Manual

Parameter Descriptions

3.4 Parameters: 2-** Brakes

3.4.1 2-0* DC brakes
Parameter group for configuring the DC brake and DC hold
3 3 functions.
2-00 DC Hold Current
Range:
50 [ 0 -
% 160 %]
*
2-01 DC Brake Current
Range:
50 [ 0 -
% 1000 %
*
]
2-02 DC Braking Time
Range:
10 s [0 - 60 s] Set the duration of the DC brake current set in
*
64
Function:
NOTICE
The maximum value depends on the rated
motor current.
Avoid 100% current for too long. It may
damage the motor.
Low values of DC hold produce larger than
expected currents with larger motor power
sizes. This error increases as the motor
power increases.
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 .
M,N
This parameter holds the motor function (holding
torque) or pre-heats the motor.
This parameter is active if DC hold is selected in
parameter 1-72 Start Function [0] or
parameter 1-80 Function at Stop [1].
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 current as a percentage of the
rated motor current I , see parameter 1-24 Motor
M,N
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]; 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.
Function:
parameter 2-01 DC Brake Current, once
activated.
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®
VLT AutomationDrive FC 301/302
2-03 DC Brake Cut In Speed [RPM]
Range:
Size related
2-04 DC Brake Cut In Speed [Hz]
Range:
Size
related
*
2-05 Maximum Reference
Range:
Size
related
*
2-06 Parking Current
Range:
50 %
*
1000 %]
2-07 Parking Time
Range:
3 s [0.1 - 60 s] Set the duration of the parking current set in
*
3.4.2 2-1* Brake Energy Funct.
Parameter group for selecting dynamic brake parameters.
Only valid for frequency converters with brake chopper.
2-10 Brake Function
Option:
[0] Off
Function:
[ 0 - par. Set the DC brake cut-in speed for
*
4-13 RPM] activation of the DC brake current
set in parameter 2-01 DC Brake
Current, upon a stop command.
Function:
NOTICE
[ 0 - par.
4-14 Hz]
Parameter 2-04 DC Brake Cut In
Speed [Hz] is not effective when
parameter 1-10 Motor Construction
= [1] PM, non-salient SPM.
Set the DC brake cut-in speed for
activation of the DC brake current set in
parameter 2-01 DC Brake Current after a
stop command.
Function:
[ par. 3-02 - This is an access parameter to
999999.999 parameter 3-03 Maximum Reference
ReferenceFeed- for legacy products. The maximum
backUnit] reference is the highest value
obtainable by summing all
references. The maximum reference
unit matches the option selected in
parameter 1-00 Configuration Mode
and the unit in
parameter 3-01 Reference/Feedback
Unit.
Function:
[ 0 - Set current as percentage of rated motor
current, parameter 1-24 Motor Current. Is
used when enabled in parameter 1-70 PM
Start Mode.
Function:
parameter 2-06 Parking Current, once activated.
Function:
No brake resistor is installed.
MG33ML02