Danfoss VLT 5000 Series Operating Instructions

VLT
®
5000 Series
Programming
117 Resonance dampening
(RESONANCE DAMP.)
Value:
0 - 500 %
✭ 100 %
Function:
High-frequency resonance problems can be eliminated
by setting parameters 117 and 118.
Description of choice:
For less resonance oscillation, the value of
parameter 118 must be increased.
118 Resonance dampening time constant
(DAMP.TIME CONST.)
Value:
5-50ms
✭ 5ms
Function:
High-frequency resonance problems can be eliminated
by setting parameters 117 and 118.
Description of choice:
Choose the time constant that provides the
best dampening.
119 High starting torque
(HIGH START TORQ.)
Value:
0.0 - 0.5 sec.
✭ 0.0 sec.
Function:
In order to secure a high starting torque, approx.
2xI
VLT,N
for max. 0.5 sec. is allowed. However,
the current is limited by the protection limit of
the frequency converter (inverter).
Description of choice:
Set the necessary time in which a high starting
torque is desired.
120 Start delay (START DELAY)
Value:
0.0 - 10.0 sec.
✭ 0.0 sec.
Function:
This parameter enables a delay of the starting time.
The frequency converter begins with the start
function selected in parameter 121.
Description of choice:
Set the desired time until acceleration is to begin.
121 Start function (START FUNCTION)
Value:
DC hold in start delay time
(DC HOLD/DELAY TIME)
[0]
DC brake in start delay time
(DC BRAKE/DELAY TIME)
[1]
✭Coasting in start delay time
(COAST/DELAY TIME)
[2]
Start frequency/voltage clockwise.
(CLOCKWISE OPERATION)
[3]
Start frequency/voltage in reference direction
(HORIZONTAL OPERATION)
[4]
VVC
plus
clockwise
(VVC+ CLOCKWISE)
[5]
Function:
This is where the desired state during start delay
(parameter 120) is selected.
Description of choice:
Select DC hold in the start delay time [0] so as
to energize the motor with a DC holding current
(parameter 124) in the start delay time.
Select DC brake in the start delay time [1] so as
to energize the motor with a DC braking current
(parameter 125) in the start delay time.
Select Coasting in the start delay time [2] and the
motor will not be controlled by the frequency converter
during the start delay time (inverter off).
Start frequency/voltage clockwise [3] and VVC
plus
clockwise [5] is typically used in hoisting applications.
Start frequency/voltage in reference direction [4] is
used especially in applications with counterweight.
Select Start frequency/voltage clockwise [3] so as
to have the function described in parameter 130
and 131 in the start delay time.
The output frequency will equal the setting of the
start frequency in parameter 130, and the output
voltage will equal the setting of the start voltage in
parameter 131. Regardless of the value assumed
by the reference signal, the output frequency will
equal the setting of the start frequency in parameter
130 and the output voltage will correspond to the
setting of the start voltage in parameter 131.
This functionality is used typically in hoisting
applications.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A9.02 - VLT is a registered Danfoss trademark
109

Danfoss VLT 5000 Series Specifications

General

Brand	Danfoss
Model	VLT 5000 Series
Category	DC Drives
Language	English