Danfoss VLT 5000 Series Operating Instructions

VLT
®
5000 Series
Programming
of the rated output current I
VLT.N
is effected from
a switching frequency of 4.5 kHz.
SelectSFAVM if the option of using a switching
frequency up to 5/10 kHz is required. Derating
of the rated output current I
VLT.N
is effected from
a switching frequency of 3.0 kHz.
447 Torque, speed feedback Torque
compensation
(TOR-SF COMP.)
Value:
-100 - 100%
✭ 0%
Function:
This parameter is only used if Torque control,
speed feedback [5] has been selected in parameter
100. Torque compensation is used in connection
with calibration of the frequency converter. By
adjusting parameter 447, Torque compensation,
the output torque can be calibrated.
See section Setting of parameters, torque
regulation, speed feedback.
Description of choice:
Set the required value.
448 Torque, speed feedback Gear ratio
with encoder
(TOR-SF GEARRATIO)
Value:
0.001 - 100.000
✭ 1.000
Function:
This parameter is only used if Torque control, speed
feedback [5] has been selected in parameter 100. If an
encoder has been fitted to the gearshaft, a gear ratio
must be set - otherwise the frequency converter will not
be able to calculate the output frequency correctly.
For a gear ratio of 1:10 (gearing down of motor
rpm), set the parameter value to 10.
If the encoder has been fitted directly on the motor
shaft, set the gear ratio to 1.00.
Description of choice:
Set the required value.
449 Torque, speed feedback Friction loss
(TOR-SF FRIC. LOSS)
Value:
0.00 - 50.00% of rated motor torque
✭ 0.00%
Function:
This parameter is only used if Torque control, speed
feedback [5] has been selected in parameter 100.
Set the friction loss as a fixed percentage loss of rated
torque. In motor operation, the friction loss will be
added to the torque, while in generating operation
it will be deducted from the torque.
See section Setting of parameters, torque
regulation, speed feedback.
Description of choice:
Set the required value.
450 Mains voltage at mains fault
(MAINS FAIL VOLT.)
Value:
180-240 V for 200-240 V units
✭ 180
342-500 V for 380-500 V units
✭ 342
473-600 V for 525-600 V units
✭ 495
473-690 V for 525-690 V units
✭ 495
Function:
Set the voltage level at which parameter 407 Mains
fault is to be activated. The voltage level for activating
the mains fault functions must be lower than the rated
mains voltage supplied to the frequency converter.
As a rule of thumb, parameter 450 can be set to
10% below the rated mains voltage.
Description of choice:
Set the level for activating mains fault functions.
NB!:
If this value is set at too high a level, the mains
fault function set in parameter 407 can be
activated, even if the mains voltage is present.
453 Speed closed loop gear ratio
(SPEED GEARRATIO)
Value:
0.01 - 100.00
✭ 1.00
Function:
This parameter is only used if Speed control, closed loop
[1] has been selected in parameter 100 Configuration.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A9.02 - VLT is a registered Danfoss trademark
149

Danfoss VLT 5000 Series Specifications

General

Brand	Danfoss
Model	VLT 5000 Series
Category	DC Drives
Language	English