Parameters: Brakes - Danfoss FC 300 Design Manual

FC 300 Design Guide

Parameters: Brakes

2-** Brakes
Parameter group for setting brake features in the
frequency converter.
2-0* DC-Brakes
Parameter group for configuring the DC brake and
DC hold functions.
2-00 DC Hold Current
Value:
0 - 160%
Function:
Enter a value for holding current as a percentage
of the rated motor current I
Motor Current. 100% DC holding current corre-
sponds 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.
2-01 DC Brake Current
Value:
0 - 1000 %
Function:
Enter a value for current as a percentage of the
rated motor current I
M,N
rent. 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; when the DC Brake
Inverse function is active; or via the serial com-
munication port. The braking current is active dur-
ing the time period set in par. 2-02 DC Braking
Time.
factory setting
146
How to Programme
50 %
set in par. 1-24
M,N
50%
, see par. 1-24 Motor Cur-
() display text [] value for use in communication via serial communication port
MG.33.B7.02 - VLT is a registered Danfoss trademark
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
Value:
0.0 - 60.0 s.
Function:
Set the duration of the DC braking current set in
par. 2-01, once activated.
2-03 DC Brake Cut In Speed
Value:
0 - par. 4 -13
Function:
Set the DC brake cut-in speed for activation of the
DC braking current set in par. 2-01, upon a stop
command.
2-1* Brake Energy Funct.
Parameter group for selecting dynamic braking
parameters.
2-10 Brake Function
Value:
Off
Resistor brake
AC brake
Function:
Select Off [0] if no brake resistor is installed.
Select Resistor brake [1] if a brake resistor is in-
corporated in the system, for dissipation of sur-
plus brake energy as heat. Connecting a brake
resistor allows a higher DC link voltage during
braking (generating operation). The Resistor
brake function is only active in frequency convert-
ers with an integral dynamic brake.
10.0s.
0RPM
[0]
[1]
[2]