Parameters: Brakes - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide

Parameters: Brakes

"
2-0* DC Brake
"
2-00 DC Hold Current
Range:
0 - 100%
Function:
Holds the motor function (holding torque) or
preheats the motor. You cannot use this parameter
if DC hold [1] is selected in par. 1-72 or par. 1-80.
Set the Holding current as a percentage value in
relation to the rated motor current I
100% DC holding current corresponds to I
NOTE
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:
0 - 160 %
Function:
Applies DC brake current on a stop command.
Activate the function by reaching the set speed
in par. 2-03, by activating the DC Brake Inverse
function on one of digital inputs, or via the serial
communication port. The braking current is
active during the time period set in par. 2-02.
Set the current as a percentage value of the
rated motor current I
M,N
braking current corresponds to I
NOTE
The maximum value depends on the
rated motor current.
Avoid 100 % current for too long. It
can damage the motor.
* default setting ( )
How to Program
*
(par. 1-24).
M,N
.
M,N
*
(par. 1-24). 100% DC
.
M,N
display text [ ] value for use in communication via serial communication port
MG.33.B3.22 - VLT is a registered Danfoss trademark
2-02 DC Braking Time
Range:
0.0 - 60.0 s.
Function:
Sets the active DC braking time for the DC
50 %
braking current (par. 2-01).
2-03 DC Brake Cut-In Speed
Range:
0 - par. 4-13 RPM
Function:
Sets the active brake cut-in speed for the
DC braking current (par. 2-01) in connection
with a stop command.
2-1* Brake Energy Funct.
"
2-10 Brake Function
Option:
*
Off
Resistor brake
Function:
The default setting is Off [0].
Use Resistor brake [1] to program the adjustable
frequency drive for connecting a brake resistor.
Connecting a brake resistor allows a higher
50%
DC link voltage during braking (generating
operation). The Resistor brake [1] function
is only active in adjustable frequency drives
with an integral dynamic brake.
Select Resistor brake [1] if a brake resistor
is part of the system.
2-11 Brake Resistor (ohm)
Option:
Ohm
Function:
This parameter is only active in adjustable frequency
drives with an integral dynamic brake.
Set the brake resistor value in ohm. This value
is used for monitoring the power to the brake
resistor. Select this function in par. 2-13.
2-12 Brake Power Limit(kW)
Range:
0.001 - Variable Limit kW
*
10.0s.
*
0RPM
[0]
[1]
Dependsonunitsize.
*
kW
151