Dc Braking Current; Min. Speed For Activating Function At Stop; Dc Holding Current; Dc Braking Time - Danfoss VLT 5000 FLUX Operating Instructions Manual

Function:
Selecting the function of the frequency converter after
a stop command or when the frequency has been
ramped down to the settings of parameter 123.
Description of choice:
Select Coasting [0] The frequency converter is
to leave the motor in free mode.
Select DC hold [1] DC holding current set in
parameter 124 is to be activated.
Select Motor check [2] The frequency converter is
to check if a motor has been connected.
Select Pre-magnetizing [3]. The magnetic field
is built up in the motor while it remains stopped.
This ensures that the motor can produce torque
as quickly as possible on starting.

123 Min. speed for activating function at stop

(MIN.F. FUNC.STOP)
Value:
0 - 600 rpm
Function:
This parameter sets the speed at which the function
selected in parameter 122 is to be activated.
Description of choice:
Enter the desired speed.

124 DC holding current

(DC-HOLD CURRENT)
Value:
0 - 100%
Function:
DC holding current is used to uphold the motor function
(holding torque) or to pre-heatthe motor.
NB!:
The maximum value depends on the
rated motor current.
Description of choice:
This parameter can only be used if DC hold [1] has
been selected in parameter 121 or 122. Set Holding
current as a percentage value in relation to the rated
motor current I set in parameter 105.
M,N
100% DC holding current corresponds to I
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.55.A6.02 - VLT is a registered Danfoss trademark

125 DC braking current

(DC BRAKE CURRENT)
Value:
0 - 160%
Function:
Setting the DC brake current when a stop command is
applied. The function is activated when the set speed
in parameter 127 has been reached, or the DC Brake
Inverse is active on terminal 27 and parameter 304, or
via the serial communication port. The braking current
is active during the time period set in parameter 126.
NB!:
The maximum value depends on the
rated motor current.
0 rpm
Description of choice:
To be set as a percentage value of the rated motor
current I
M,N
100% DC braking current corresponds to I

126 DC braking time

(DC BRAKING TIME)
50 %
Value:
0.0 (OFF) - 60.0 sec.
Function:
Setting the DC braking time for which the DC braking
current (parameter 125) is active.
Description of choice:
Set the DC braking time.
M,N.
®
VLT 5000 FLUX
Warning: 100 % current for too long
may damage the motor.
set in parameter 105.
Warning: 100 % current for too long
may damage the motor.
50 %
.
M,N
10.0 sec.
73