Programming; Parameters For Vlt ® Micro Drive Fc - Danfoss VLT Brake Resistor MCE 101 Design Manual

Programming

5 Programming
For descriptions of all available parameters, see the
product specific Programming Guide, www.danfoss.com/
BusinessAreas/DrivesSolutions/Documentations/VLT+Technical
+Documentation.htm.
5.1 Parameters for VLT
2-10 Brake Function
5 5
Option:
[0] Off
*
[1] Resistor
Brake
[2] AC Brake
2-11 Brake Resistor (Ohm)
Range:
5 Ω [5-5000 Ω]
*
2-14 Brake Voltage Reduce
Range:
0 V
*
18
Design Guide
®
Micro Drive FC 51
Function:
NOTICE
Resistor brake is only functional in
frequency converters with integrated
dynamic brake. An external resistor must
be connected.
Resistor Brake
The resistor brake limits voltage in the
intermediate circuit when the motor acts as
generator. Without brake resistor, the frequency
converter eventually trips.
The resistor brake consumes surplus energy
resulting from motor braking. A frequency
converter with brake, stops a motor faster than
without a brake, which is used in many
applications. Requires connection of external
brake resistor.
An alternative to the resistor brake is the AC
brake.
AC Brake
The AC brake consumes surplus energy by
creating power loss in the motor.
It is important to keep in mind that an increase
in power loss causes motor temperature to rise.
No brake function.
Resistor brake is active.
AC brake is active.
Function:
Set brake resistor value.
Function:
[ 0 - 0 V]
Danfoss A/S © Rev. 05/2014 All rights reserved.
5.2 Parameters for VLT
®
and VLT AQUA Drive FC 202
2-02 DC Braking Time
Range: Function:
10 s [0 - 60 s] Set the duration of the DC braking current set
*
in 2-01 DC Brake Current, once activated.
2-03 DC Brake Cut In Speed [RPM]
Range: Function:
Size [ 0 - 0 Set the DC brake cut-in speed to
related RPM] activate the DC braking current set in
*
2-01 DC Brake Current, upon a stop
command.
When 1-10 Motor Construction is set to
[1] PM non-salient SPM this value is
limited to 0 RPM (OFF)
NOTICE
Parameter 2-03 DC Brake Cut In Speed [RPM] does not
have effect when 1-10 Motor Construction=[1] PM, non-
salient SPM.
2-04 DC Brake Cut In Speed [Hz]
Range:
Size related [ 0 - 1000.0 Set the DC brake cut-in speed for
*
Hz] activation of the DC braking
current set in 2-01 DC Brake
Current, upon a stop command.
NOTICE
Parameter 2-04 DC Brake Cut In Speed [Hz] has no effect
when 1-10 Motor Construction[1] PM, non-salient SPM.
®
HVAC Drive FC 102
Function:
MG90O202