B-## Brakes - GE AF-650 GP Programming Manual

Parameter Descriptions

3.21 B-## Brakes

Parameter group related to the brake features in the drive.
3.21.1 B-0# DC Brake
Parameters to configure the DC brake and DC hold
functions.
B-00 DC Hold Current
Range: Function:
NOTICE
50 [0 -
% 160 %]
*
The maximum value depends on the rated
motor current.
Avoid 100% current for too long. It may
damage the motor.
Low values of DC hold produce larger than
expected currents with larger motor power
sizes. This error increases as the motor
power increases.
Enter a value for holding current as a percentage
of the rated motor current I
parameter P-03 Motor Current. 100% DC hold
current corresponds to I
This parameter holds the motor function (holding
torque) or pre-heats the motor.
This parameter is active if DC hold is selected in
parameter F-25 Start Function [0] or
parameter H-80 Function at Stop [1].
B-01 DC Brake Current
Range: Function:
NOTICE
50 [0 -
% 1000 %
*
The maximum value depends on the rated
]
motor current.
Avoid 100% current for too long. It may
damage the motor.
Enter a value for current as a percentage of the
rated motor current I
Current. 100% DC brake current corresponds to
I .
M,N
DC brake current is applied on a stop command,
when the speed is lower than the limit set in
parameter B-03 DC Brake Cut In Speed [RPM]; when
the DC Brake Inverse function is active, or via the
serial communication port. The braking current is
active during the time period set in
parameter B-02 DC Braking Time.
DET-618D
AF-650 GP™ Programming Guide
set in
M,N
.
M,N
, see parameter P-03 Motor
M,N
02/2016 All rights reserved.
B-02 DC Braking Time
Range: Function:
10 s [0 - 60 s] Set the duration of the DC brake current set in
*
parameter B-01 DC Brake Current, once
activated.
B-03 DC Brake Cut In Speed [RPM]
Range: Function:
0 RPM [0 - par. F-17 Set the DC brake cut-in speed for
*
RPM] activation of the DC brake current set in
parameter B-01 DC Brake Current, upon a
stop command.
B-04 DC Brake Cut In Speed [Hz]
Range: Function:
0.0 Hz [0 - par. Set the DC brake cut-in speed for
*
F-15 Hz] activation of the DC braking current set
in parameter B-01 DC Brake Current, upon
a stop command.
B-05 Maximum Reference
Range:
par. F-53 Reference- [par. F-52 - 999999.999
FeedbackUnit ReferenceFeedbackUnit]
*
B-06 Parking Current
Range: Function:
50 % [0 - Set current as percentage of rated motor
*
1000 %] current, parameter P-03 Motor Current. Is
used when enabled in parameter F-20 PM
Start Mode.
B-07 Parking Time
Range: Function:
3 s [0.1 - 60 s] Set the duration of the parking current set in
*
parameter B-06 Parking Current, once activated.
3.21.2 B-1# Brake Energy Funct.
Parameters to configure the dynamic braking functions in
the drive. Note! This applies only to drives ordered with
the optional factory installed brake chopper option.
B-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 resistor brake function is only
active in frequency converters with an integral
dynamic brake.
3 3
Function:
145