Danfoss VT2800 Series User Manual

VLT
®
2800 Series
203 Reference range
(REFERENCE RANGE)
Value:
✭Min. reference - M ax 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 Configurat ion
a selection has been ma de of Speed regulation,
closed loop. You should select Min ref. - Max. ref.
[0], if Process regulat ion, 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
possiblevalueofthetotalofallreferences. Ifin
parameter 100 Configuration, Speed regulation,
closed loop [1] o r 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 follow ing 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 a ssumed by the sum of all references.
If Closed loop [1]/[3] is selected in parameter 100
Configuration the maximum reference cannot exceed
the va lue in parameter 415 Maximum feedback.
Ma ximum reference is ignored if the loc al
reference is active.
The reference unit can be defined from
the following table:
Par. 100 Configuration Unit
Open loop [0] Hz
Speedreg,closedloop[1] rpm
Process reg, closed loop [3] Par. 416
Description of choice:
Ma ximum reference is set, if the speed of the
motor is to be max. the set value, regardless
of the whether the re sulting 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 accelerat ion/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

Danfoss VT2800 Series Specifications

General

Brand	Danfoss
Model	VT2800 Series
Category	Controller
Language	English