Main Menu - Brakes - Group - Danfoss VLT HVAC Basic Drive FC 101 Programming Manual

Parameters

3.3 Main Menu - Brakes - Group 2

2-00 DC Hold/Motor Preheat Current
Range: Function:
50 % [0 - Set holding current as a percentage of the rated
*
160 %] motor current IM,N 1-24 Motor Current. 2-00 DC
Hold/Motor Preheat Current holds the motor
function (holding torque) or pre-heats the motor.
This parameter is active if DC hold is selected in
1-72 Start Function [0] or 1-80 Function at Stop [1].
NOTICE
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 - Set current as % of rated motor current,
*
150 %] 1-24 Motor Current. DC brake current is applied
on stop command, when speed is below the
limit set in 2-04 DC Brake Cut In Speed; when the
DC Brake Inverse function is active; or via the
serial port. See 2-02 DC Braking Time for duration.
NOTICE
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 s [0 - 60 s] Set the duration of the DC braking current set
*
in 2-01 DC Brake Current, once activated.
2-04 DC Brake Cut In Speed
Range: Function:
0 Hz [ 0 - This parameter is for setting the DC brake cut
*
400 Hz] in speed at which the DC braking current
2-01 DC Brake Current is to be active, in
connection with a stop command.
NOTICE
2-01, 2-02 and 2-04 will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
®
VLT HVAC Basic Drive FC 101 Programming Guide
2-06 Parking Current
Range:
100 %
*
2-07 Parking Time
Range:
3 s [0.1 -
*
60 s]
3.3.1 2-1* Brake Energy Function
Parameter group for selecting dynamic braking parameters.
2-10 Brake Function
Option:
[0]
*
[2]
2-16 AC Brake, Max current
Range:
100 %
*
2-17 Over-voltage Control
Option:
[0] Disabled No OVC required.
[2] Enabled Activates OVC.
*
NOTICE
The ramp time is automatically adjusted to
avoid tripping of the frequency converter.
MG18B302 - Rev. 2013-09-02
Function:
[0 - Set current as percentage of rated motor
150 %] current, 1-24 Motor Current. Active in
connection with 1-73 Flying Start. The parking
current is active during the time period set in
2-07 Parking Time.
NOTICE
2-06 Parking Current is only active when
PM motor construction is selected in
1-10 Motor Construction
Function:
Set the duration of the parking current time set
in 2-06 Parking Current. Active in connection with
1-73 Flying Start.
NOTICE
2-07 Parking Time is only active when PM
motor construction is selected in
1-10 Motor Construction
Function:
Off No brake resistor installed.
AC brake AC brake is active.
Function:
[ 0 - 150 %] Enter the maximum permissible current
when using AC brake to avoid
overheating of motor windings.
Function:
Select whether to enable OVC, which reduces the
risk of drive trip due to over voltage on the DC
link caused by generative power from load.
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