Danfoss VLT 2050 User Manual

MG.20.B6.02 – VLT is a registered Danfoss trademark
VLT
®
2000 Series
68
Description:
By means of terminal 29 you can switch between the
other references (terminal 29 = 0 V) and the sum of
the other/digital references (terminal 29 = 24 V).
You must select Digital reference select in parameter
402 and 403 to select one of the digital references:
18/27 19 Terminal
0 0 Digital reference 1
1 0 Digital reference 2
0 1 Digital reference 3
1 1 Digital reference 4
209 Current limit (CURRENT LIMIT)
Value:
0.3 - I
VLT,MAX
Function:
Using this parameter you can set the maximum allow-
able output current of the VLT frequency converter.
If the current limit is exceeded the output frequency is
reduced until the current falls to the current limit. The
output frequency does not increase to the set refe-
rence value until the current has fallen to below the
current limit.
Description:
The factory setting corresponds to a load which is
160% (VLT 2030 1/3 x 208-240 V:140%) of the rated
output current. If you want to use the current limit as
motor protection you must record the rated motor
current.
Using parameter 310 you can record how long you
want the frequency converter to operate at current li-
mit before tripping out.
The load range of 100-160% is only for intermittent
operation and therefore the unit can only give an
output of 160% ((VLT 2030 1/3 x 208-240 V: 140%)
for 60 seconds.
Operation time is extended at decreasing load and is
unlimited at 100%.
Description of parameters
204 Digital reference type (DIG. REF. TYPE)
Value:
✭ Sum (SUM) [0]
Relative (RELATIVE) [1]
Function:
The digital references are generated internally in the
unit and presented as a percentage of the difference
between the f
MAX
and f
MIN
selected in parameters 201
and 202, added to f
MIN
.
Description:
If Sum is selected, one of the digital references
(parameters 205-208) is added as a percentage of
the difference between f
MAX
and f
MIN
with the other
references. If Relative is selected, one of the digital
references (parameters 205-208) is added as a
percentage of the sum of the other references.
205 Digital reference 1 (DIG. REF. 1)
Value:
−100.00% - +100.00% ✭ 0
206 Digital reference 2 (DIG. REF. 2)
Value:
−100.00% - +100.00% ✭ 0
207 Digital reference 3 (DIG. REF. 3)
Value:
−100.00% - +100.00% ✭ 0
208 Digital reference 4 (DIG. REF. 4)
Value:
−100.00% - +100.00% ✭ 0
Function:
The digital speed references are generated internally
in the unit and presented as a percentage of the f
MAX
value. The percentage value is added to any analogue
reference from terminals 53 and 60.
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✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.
If the switching frequency is higher than 4.5 kHz
this period will be shorter.
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Danfoss VLT 2050 Specifications

General

Brand	Danfoss
Model	VLT 2050
Category	Inverter
Language	English