Danfoss VLT AutomationDrive FC 302 Design Guide

FC 300 Design Guide
How to Program
" Parameters: Brakes
" 2-0* DC Brake
2-00 DC Hold Current
Range:
0 - 100%
*
50 %
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. 1-8 0.
Set the Holding current as a percentage value in
relation to the rated motor current I
M,N
(par. 1-24).
100% DC holding current corresponds to I
M,N
.
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%
*
50%
Function:
Applies DC brake current on a stop command.
Activate the function by reaching the set speed
in p ar. 2-03, by activating the DC Brake Inverse
function on one of digital inputs, or v ia the serial
communication port. The braking current is
active during the tim e period s et in par. 2-02.
Set the current as a percentage value of the
rated motor current I
M,N
(par. 1-24). 100 % DC
braking current corresponds to I
M,N
.
NOTE
The maximum value depends on the
rated motor current.
Avoid 100 % current for too long. It
can damage the motor.
2-02 DC Braking Time
Range:
0.0 - 60.0 s.
*
10.0s.
Function:
Sets the active DC braking time for the DC
braking current (par. 2-01).
2-03 DC Brake Cut-In Speed
Range:
0-par. 4-13RPM
*
0RPM
Function:
Sets the active brake cut-in speed for the
DC braking current (par. 2-01) in conne ction
with a stop command.
" 2-1* Brake Energy Funct.
2-10 Brake Function
Option:
*
Off [0]
Resistor brake [1]
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
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 Re sistor brake [1] if a brake resistor
is part of the system.
2-11 Brake Resistor (ohm)
Option:
Ohm Dependsonunitsize.
Function:
This parameter is only active in adjustable frequency
drives w ith an integral dynamic brake.
Set the brake resistor value in ohm. This value
is us ed 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
*
kW
*
default setting ()display text []value for use in communication via serial communication port
151
MG.33.B
3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English