Table of Contents
Advertisement
Parameter Descriptions
4.3 Parameters: 2-** Brakes
4.3.1 2-0* DC Brake
Use this parameter group to configure DC brake and DC
hold functions.
2-00 DC Hold/Motor Preheat Current
Range:
Function:
50 %
[0 -
Set holding current as a percentage of the rated
160 %]
motor current I
*
M,N
This parameter holds the motor function (holding
torque) or pre-heats the motor. This parameter is
active if [0] DC hold is selected in
parameter 1-72 Start Function, or if [1] DC hold/pre-
heat is selected in parameter 1-80 Function at
Stop.
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 %]
parameter 1-24 Motor Current. DC brake current is
*
applied on stop command, when speed is below
the limit set in parameter 2-04 DC Brake Cut In
Speed; when the DC brake inverse function is
active (parameters 5-1* Digital Inputs are set to [5]
DC-brake inverse); or via the serial port. See
parameter 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 brake current set in
*
parameter 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 brake current
parameter 2-01 DC Brake Current is to be active,
with a stop command.
MG06C602
Programming Guide
parameter 1-24 Motor Current.
Danfoss A/S © 7/2015 All rights reserved.
2-04 DC Brake Cut In Speed
Range:
Function:
NOTICE
This parameter is not active when
parameter 1-10 Motor Construction is set
to options that enable PM motor mode.
2-06 Parking Current
Range:
Function:
50 %
[ 0 - 1000 %] Set current as percentage of rated motor
*
current, parameter 1-24 Motor Current.
2-07 Parking Time
Range:
Function:
3 s
[0.1 - 60 s] Set the duration of the parking current set in
*
parameter 2-06 Parking Current, once activated.
4.3.2 2-1* Brake Energy Funct.
Parameter group for selecting dynamic braking parameters.
Only valid for frequency converters with brake chopper.
2-10 Brake Function
Option:
Function:
[0]
Off
No brake resistor is installed.
*
[1]
Resistor
A brake resistor is incorporated in the system for
brake
dissipation of surplus brake energy as heat.
Connecting a brake resistor allows a higher DC-
link voltage during braking (generating
operation). The brake resistor function is only
active in frequency converters with an integral
dynamic brake.
[2]
AC brake Improves braking without using a brake resistor.
This parameter controls an overmagnetisation of
the motor when running with a generatoric load.
This function can improve the OVC function.
Increasing the electrical losses in the motor
allows the OVC function to increase braking
torque without exceeding the voltage limit.
NOTICE
The AC brake is not as efficient as
dynamic braking with resistor.
AC brake is for VVC
and closed loop.
2-11 Brake Resistor (ohm)
Range:
Function:
Set the brake resistor value in Ω. This
Size
[ 0 -
related
65535
value is used for monitoring the power to
*
Ohm]
the brake resistor. Parameter 2-11 Brake
Resistor (ohm) is only active in frequency
+
mode in both open
37
4
4
Advertisement
Table of Contents
Need help?
Do you have a question about the VLT Automation Drive FC 360 and is the answer not in the manual?