16-32 Brake Energy /s
Range:
Function:
0 kW
*
[0 - 10000 kW] View the brake power transmitted to an
external brake resistor, stated as an
instantaneous value.
16-33 Brake Energy /2 min
Range:
Function:
0 kW
*
[0 - 10000
kW]
View the brake power transmitted to an
external brake resistor. The mean power is
calculated on an average level based on
the selected time period within
2-13 Brake
Power Monitoring
.
30-81 Brake Resistor (ohm)
Range:
Function:
Size
related
*
[ 0.01 -
65535.00 Ohm]
Set the brake resistor value in
Ω
with 2 decimals. This value is used
for monitoring the power to the
brake resistor in
2-13 Brake Power
Monitoring
.
5.3 Parameters for VLT
®
AutomationDrive
FC 301/FC 302 and
®
Decentral Drive
FCD 302
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 related
*
[ 0 - 60000
RPM]
Set the DC brake cut-in speed for
activation of the DC braking
current set in
2-01 DC Brake
Current
, upon a stop command.
2-04 DC Brake Cut In Speed [Hz]
Range:
Function:
Size related
*
[ 0 - 1000.0
Hz]
Set the DC brake cut-in speed for
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
.
2-10 Brake Function
Option:
Function:
[0] Off
No brake resistor is installed.
[1] Resistor
brake
A brake resistor is incorporated in the system, for
dissipation of surplus 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 converters with an integral dynamic
brake.
[2] AC brake Is selected to improve 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
the braking torque without exceeding the over
voltage limit.
NOTICE
The AC brake is not as efficient as dynamic
braking with resistor.
AC brake is for VVC
+
mode in both open
and closed loop.
Programming
Design Guide
MG90O202
Danfoss A/S © Rev. 05/2014 All rights reserved.
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Содержание VLT Brake Resistor MCE 101
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