User Manual
Chapter 7 - Parameters Description 101
P.302 DC braking freq
(DC Braking frequency)
It defines the frequency threshold, at which will be activated the DC braking at the STOP.
P.303 DC braking start
Defines the DC braking duration in seconds, at the START (RUN or Reverse).
The motor will be locked until this time is elapsed.
P.304 DC braking stop
Defines the DC braking duration in seconds, at the STOP (RUN or Reverse commands released).
N
OTE
!
a DC brake command can be carried out also via digital inputs (see chapter
INTERFACE
,
section
Digital inputs
). In this case a
DC brake
will be possible at every speed and independently
if the drive is in STOP or START condition (digital input as
DC brake
).
the injection of direct current remanin active for all the transition time of the DC Brake command.
a DC brake while the drive is controlled with a JOG command, can be obtained by the setting of
a digital input as
DC brake
.
a momentary disabling of the DC braking function, is possible via digital input (digital input as
DC brake en
).
Code
LCD display
[Code] & LCD select.
Default
MIN
MAX
Unit
Variation
IPA
P.300
DC braking level
0
0
100
% of I nom
449
P.301
DCB lev fac src
[0] Null
0
0
3
450
[1] Analog inp 1 (setting through I.200 I.204)
P.302
DC braking freq
0
0
500
Hz
0.1
451
P.303
DC braking start
0
0
60
sec
0.1
452
P.304
DC braking stop
0
0
60
sec
0.1
453
Autocapture function
The Autocapture function, allows to engage a motor already running.
An engaging of a motor already running, without the aid of this function, may cause the drive to trip in overvoltage (OV
alarm) or overcurrent (OC alarm) when the drive is started.
Enabling the function, the inverter frequency output will be forced to match the motor speed, according to the command
type selected in the Autocapture mode and the setting of the other regulation parameters of this function.
The main uses are:
case of pumps with flow present
restart after a fault alarm
engage of a motor running directly under the mains
P.320 Autocapture mode
P.320 = 0 Function disabled
P.320 = 1 1
st
RUN Only
The engaging of the motor is carried out only once, when the first valid RUN command is given after drive power
on.
P.320 = 2 Always
The engaging of the motor is carried out at every valid RUN command.
N
OTE
!
The function can be enabled also through the digital inputs (see chapter
INTERFACE
, section
Digital
inputs
).
In this case it will be possible to have a Autocapture at any time the command is applied (independent
by the setting of
P.320
).
