Example 1: Automatic Dc Braking When The Motor Is Started - Lenze i55AE125B Manual

11.4.1

Example 1: Automatic DC braking when the motor is started

In order that the DC braking is automatically active when the motor is started, the start
method "DC braking [1]" must be set in
The DC braking is carried out with the braking current set in
•
Only after the hold time
•
the setpoint.
Parameter
0x2631:001 (P400.01)
0x2631:002 (P400.02)
0x2631:004 (P400.04)
0x2838:001 (P203.01)
0x2860:001 (P201.01)
0x2911:001 (P450.01)
0x2B84:001 (P704.01)
0x2B84:002 (P704.02)
Input signals
Frequency setpoint selection
Trigger Function
Digital input 1 [11] Enable inverter
Digital input 2 [12] Run
Output signals
Output frequency
0x2DDD
Status signals
Running [50]
Stop active [53]
DC braking active [67]
The status signals can be assigned to digital outputs.
After the start command, the DC braking is active. Only after the hold time
①
the setpoint.
The motor is stopped with the stop method set in
②
If the inverter is disabled, the motor coasts.
③
0x2838:001 (P203.01).
0x2B84:002 (P704.02) has elapsed, the motor is accelerated to
Name
Enable inverter
Run
Reset fault
Start method
Frequency control: Default setpoint source
Frequency setpoint presets: Preset 1
Current
Automatic hold time
60 Hz
50 Hz
40 Hz
30 Hz
20 Hz
10 Hz
0 Hz
60 Hz
50 Hz
40 Hz
30 Hz
20 Hz
10 Hz
0 Hz
4Configuration of digital outputs
0x2838:003
Example 1: Automatic DC braking when the motor is started
0x2B84:001 (P704.01).
Setting for this example
Digital input 1 [11]
Digital input 2 [12]
Not connected [0]
DC braking [1]
Frequency preset 1 [11]
40 Hz
50 %
10 s
^ 603
0x2B84:002 (P704.02)
(P203.03). In the example: Stop with standard ramp.
Additional functions
DC braking
has elapsed, the motor is accelerated to
t
t
t
t
t
t
t
439