VLT
®
2800 Series
203 Reference range
(REFERENCE RANGE)
Value:
✭
Min. reference - Max reference (MIN - MAX)
[0]
-Max. reference - Max. reference
(-MAX - +MAX)
[1]
Function:
In this parameter you select whether the reference
signal must be positive or whether it can be both
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
(MIN.REFERENCE)
Value:
Par.
100
Config.
=
Open loop
[0].
-100,000.000 - par. 205 Ref
MAX
✭
0.000 Hz
Par. 100
Config.
=
Closed loop
[1]/[3].
-Par. 414
Minimum feedback
- par. 205
Ref
MAX
✭
0.000 rpm/par 416
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
Unit
Open loop [0]
Hz
Speed reg, closed loop [1]
rpm
Process reg, closed loop [3]
Par. 416
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.
205 Maximum reference, Ref
MAX
(MAX.REFERENCE)
Value:
Par.
100
Config.
=
Open loop
[0].
Par. 204
Ref
MIN
- 1000.000 Hz
✭
50.000 Hz
Par.
100
Config.
=
Closed loop
[1]/[3].
Par. 204 Ref
MIN
- Par. 415
Max. feedback
✭
50.000 rpm/par 416
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
Unit
Open loop [0]
Hz
Speed reg, closed loop [1]
rpm
Process reg, closed loop [3]
Par. 416
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)
[0]
Sin shaped (SIN SHAPED)
[1]
Sin
2
shaped (S-SHAPED 2)
[2]
Function:
You can choose between a linear, an S-shaped
and an S
2
ramp process.
Description of choice:
Select the required ramp type depending on the
required acceleration/deceleration process.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.28.E9.02 - VLT is a registered Danfoss trademark
80
