Danfoss VLT AutomationDrive FC 300 Programming Guide

3.4 Parameters: Brakes
3.4.1 2-** Brakes
Parameter group for setting brake features in the frequency converter.
3.4.2 2-0* DC-Brakes
Parameter group for configuring the DC brake and DC hold functions.
2-00 DC Hold Current
Range: Function:
50 %* [Application dependant] Enter a value for holding current as a percentage of the rated motor current I
M,N
set in
par. 1-24
Motor Current . 100% DC holding 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 par. 1-72 Start Function [0] or par. 1-80 Function
at Stop
[1].
NB!
The maximum value depends on the rated motor current.
NB!
Avoid 100 % current for too long. It may damage the motor.
Low values of DC hold will produce larger than expected currents with larger motor power sizes. This error will increase as the motor
power increases.
2-01 DC Brake Current
Range: Function:
50 %* [Application dependant] Enter a value for current as a percentage of the rated motor current I
M,N
, see par. 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
par. 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 par. 2-02
DC
Braking Time
.
NB!
The maximum value depends on the rated motor current.
NB!
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 par. 2-01 DC Brake Current , once activated.
2-03 DC Brake Cut In Speed [RPM]
Range: Function:
Application
dependent*
[Application dependant] Set the DC brake cut-in speed for activation of the DC braking current set in par. 2-01 DC Brake
Current
, upon a stop command.
2-04 DC Brake Cut In Speed [Hz]
Range: Function:
Application
dependent*
[Application dependant] Set the DC brake cut-in speed for activation of the DC braking current set in par. 2-01 DC Brake
Current
, upon a stop command.
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark 65
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English