Fantech VLT 2800 Series Instruction Manual page 52

positive and negative. The minimum limit may be a
negative value, unless in parameter 100 Configuration
a selection has been made of Speed regulation,
closed loop. You should select Min ref. - Max. ref.
[0], if Process regulation, closed loop [3] has been
selected in parameter 100 Configuration.
Description of choice:
Select the required range.
204 Minimum reference, Ref
(MIN.REFERENCE)
Value:
Par. 100 Config. = Open loop [0].
-100,000.000 - par. 205 Ref
Par. 100 Config. = Closed loop [1]/[3].
-Par. 414 Minimum feedback - par. 205 Ref
Function:
Minimum reference is an expression of the minimum
possible value of the total of all references. If in
parameter 100 Configuration, Speed regulation,
closed loop [1] or Process regulation, closed loop
[3] is selected, the minimum reference is limited by
parameter 414 Minimum feedback. Minimum reference
is ignored if the local reference is active.
The reference unit can be defined from the
following table:
Par. 100 Configuration
Open loop [0]
Speed reg, closed loop [1]
Process reg, closed loop [3]
Description of choice:
The minimum reference is preset if the motor
has to run at a minimum speed, regardless of
whether the resulting reference is 0.
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.28.A8.22 - VLT is a registered Danfoss trademark
MIN
0.000 Hz
MAX
MAX
0.000 rpm/par 416
Unit
Hz
rpm
Par. 416
VLT® 2800 Series
205 Maximum reference, Ref
(MAX.REFERENCE)
Value:
Par. 100 Config. = Open loop [0].
Par. 204 Ref - 1000.000 Hz
MIN
Par. 100 Config. = Closed loop [1]/[3].
Par. 204 Ref - Par. 415 Max. feedback
MIN
Function:
The maximum reference gives the highest value that
can be assumed by the sum of all references. If Closed
loop [1]/[3] is selected in parameter 100 Configuration
the maximum reference cannot exceed the value
in parameter 415 Maximum feedback.
Maximum reference is ignored if the local
reference is active.
The reference unit can be defined from the
following table:
Par. 100 Configuration
Open loop [0]
Speed reg, closed loop [1]
Process reg, closed loop [3]
Description of choice:
Maximum reference is set, if the speed of the
motor is to be max. the set value, regardless
of the whether the resulting reference is greater
than the maximum reference.
206 Ramp type
(RAMP TYPE)
Value:
Linear (LINEAR)
Sine shaped (S-SHAPED)
2
Sine shaped (S-SHAPED 2)
Function:
You can choose between a linear, a sine-shaped
2
and a sine -shaped ramp process.
Description of choice:
Select the required ramp type depending on
requirementsfor the acceleration/deceleration process.
MAX
50.000 Hz
50.000 rpm/par 416
Unit
Hz
rpm
Par. 416
[0]
[1]
[2]
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